./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3 --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 6029375071a37af887817933cb6d522f173528f0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:23:34,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:23:34,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:23:34,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:23:34,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:23:34,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:23:34,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:23:34,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:23:34,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:23:34,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:23:34,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:23:34,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:23:34,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:23:34,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:23:34,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:23:34,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:23:34,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:23:34,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:23:34,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:23:34,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:23:34,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:23:34,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:23:34,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:23:34,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:23:34,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:23:34,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:23:34,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:23:34,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:23:34,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:23:34,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:23:34,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:23:34,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:23:34,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:23:34,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:23:34,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:23:34,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:23:34,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:23:34,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:23:34,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:23:34,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:23:34,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:23:34,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-15 20:23:34,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:23:34,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:23:34,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:23:34,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:23:34,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:23:34,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:23:34,405 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:23:34,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:23:34,405 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:23:34,405 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 20:23:34,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:23:34,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:23:34,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:23:34,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:23:34,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:23:34,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:23:34,408 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-15 20:23:34,408 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:23:34,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:23:34,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:23:34,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:23:34,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:23:34,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:23:34,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:23:34,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:23:34,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:23:34,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:23:34,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:23:34,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:23:34,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:23:34,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:23:34,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:23:34,413 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_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6029375071a37af887817933cb6d522f173528f0 [2021-10-15 20:23:34,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:23:34,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:23:34,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:23:34,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:23:34,740 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:23:34,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2021-10-15 20:23:34,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/data/4cce3c3f5/db5c93688cd74160a43869b02565ff59/FLAGbc7dffec9 [2021-10-15 20:23:35,296 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:23:35,297 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2021-10-15 20:23:35,319 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/data/4cce3c3f5/db5c93688cd74160a43869b02565ff59/FLAGbc7dffec9 [2021-10-15 20:23:35,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/data/4cce3c3f5/db5c93688cd74160a43869b02565ff59 [2021-10-15 20:23:35,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:23:35,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:23:35,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:23:35,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:23:35,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:23:35,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:35,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d180cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35, skipping insertion in model container [2021-10-15 20:23:35,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:35,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:23:35,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:23:35,867 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[423,436] [2021-10-15 20:23:35,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:23:35,919 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:23:35,931 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[423,436] [2021-10-15 20:23:35,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:23:35,974 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:23:35,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35 WrapperNode [2021-10-15 20:23:35,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:23:35,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:23:35,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:23:35,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:23:35,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:35,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:36,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:23:36,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:23:36,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:23:36,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:23:36,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:36,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:36,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:36,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:36,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:36,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:36,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:36,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:23:36,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:23:36,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:23:36,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:23:36,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (1/1) ... [2021-10-15 20:23:36,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:23:36,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:36,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:23:36,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:23:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:23:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:23:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:23:36,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:23:36,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:23:36,849 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-15 20:23:36,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:36 BoogieIcfgContainer [2021-10-15 20:23:36,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:23:36,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:23:36,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:23:36,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:23:36,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:23:35" (1/3) ... [2021-10-15 20:23:36,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32478cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:23:36, skipping insertion in model container [2021-10-15 20:23:36,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:35" (2/3) ... [2021-10-15 20:23:36,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32478cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:23:36, skipping insertion in model container [2021-10-15 20:23:36,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:36" (3/3) ... [2021-10-15 20:23:36,883 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2021-10-15 20:23:36,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:23:36,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-10-15 20:23:36,945 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:23:36,951 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, mConcurrency=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 [2021-10-15 20:23:36,952 INFO L340 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-10-15 20:23:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 104 states have (on average 1.8365384615384615) internal successors, (191), 138 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-15 20:23:36,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:36,977 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:36,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:36,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1807791520, now seen corresponding path program 1 times [2021-10-15 20:23:36,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:36,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437922384] [2021-10-15 20:23:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:36,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:37,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:37,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437922384] [2021-10-15 20:23:37,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437922384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:37,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:37,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:23:37,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112467200] [2021-10-15 20:23:37,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:23:37,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:23:37,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:23:37,162 INFO L87 Difference]: Start difference. First operand has 139 states, 104 states have (on average 1.8365384615384615) internal successors, (191), 138 states have internal predecessors, (191), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-15 20:23:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:37,192 INFO L93 Difference]: Finished difference Result 258 states and 354 transitions. [2021-10-15 20:23:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:23:37,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2021-10-15 20:23:37,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:37,202 INFO L225 Difference]: With dead ends: 258 [2021-10-15 20:23:37,203 INFO L226 Difference]: Without dead ends: 122 [2021-10-15 20:23:37,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:23:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-15 20:23:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-15 20:23:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 90 states have (on average 1.6444444444444444) internal successors, (148), 121 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2021-10-15 20:23:37,267 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 7 [2021-10-15 20:23:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:37,268 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2021-10-15 20:23:37,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-15 20:23:37,268 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2021-10-15 20:23:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-15 20:23:37,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:37,270 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:37,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:23:37,270 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:37,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:37,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1806850254, now seen corresponding path program 1 times [2021-10-15 20:23:37,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:37,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143068577] [2021-10-15 20:23:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:37,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:37,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:37,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143068577] [2021-10-15 20:23:37,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143068577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:37,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:37,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:23:37,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710254986] [2021-10-15 20:23:37,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:37,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:37,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:37,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:37,397 INFO L87 Difference]: Start difference. First operand 122 states and 148 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2021-10-15 20:23:37,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:37,601 INFO L93 Difference]: Finished difference Result 255 states and 313 transitions. [2021-10-15 20:23:37,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:37,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2021-10-15 20:23:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:37,614 INFO L225 Difference]: With dead ends: 255 [2021-10-15 20:23:37,614 INFO L226 Difference]: Without dead ends: 150 [2021-10-15 20:23:37,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-15 20:23:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2021-10-15 20:23:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 114 states have (on average 1.5263157894736843) internal successors, (174), 145 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 174 transitions. [2021-10-15 20:23:37,647 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 174 transitions. Word has length 7 [2021-10-15 20:23:37,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:37,648 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 174 transitions. [2021-10-15 20:23:37,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2021-10-15 20:23:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 174 transitions. [2021-10-15 20:23:37,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-15 20:23:37,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:37,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:37,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:23:37,650 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:37,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:37,651 INFO L82 PathProgramCache]: Analyzing trace with hash 641273941, now seen corresponding path program 1 times [2021-10-15 20:23:37,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:37,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59832137] [2021-10-15 20:23:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:37,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:37,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:37,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59832137] [2021-10-15 20:23:37,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59832137] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:37,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:37,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:37,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15468961] [2021-10-15 20:23:37,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:23:37,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:37,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:23:37,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:37,726 INFO L87 Difference]: Start difference. First operand 146 states and 174 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:37,896 INFO L93 Difference]: Finished difference Result 194 states and 226 transitions. [2021-10-15 20:23:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:37,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-10-15 20:23:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:37,900 INFO L225 Difference]: With dead ends: 194 [2021-10-15 20:23:37,900 INFO L226 Difference]: Without dead ends: 190 [2021-10-15 20:23:37,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:37,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-15 20:23:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 148. [2021-10-15 20:23:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 118 states have (on average 1.4915254237288136) internal successors, (176), 147 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2021-10-15 20:23:37,932 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 11 [2021-10-15 20:23:37,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:37,933 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2021-10-15 20:23:37,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:37,933 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2021-10-15 20:23:37,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-15 20:23:37,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:37,934 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:37,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:23:37,935 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:37,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1595344206, now seen corresponding path program 1 times [2021-10-15 20:23:37,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:37,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164964411] [2021-10-15 20:23:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:37,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:38,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:38,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164964411] [2021-10-15 20:23:38,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164964411] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:38,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:38,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:38,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809297323] [2021-10-15 20:23:38,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:23:38,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:38,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:23:38,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:38,042 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:38,221 INFO L93 Difference]: Finished difference Result 317 states and 375 transitions. [2021-10-15 20:23:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:38,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-15 20:23:38,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:38,226 INFO L225 Difference]: With dead ends: 317 [2021-10-15 20:23:38,226 INFO L226 Difference]: Without dead ends: 202 [2021-10-15 20:23:38,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:38,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-15 20:23:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 154. [2021-10-15 20:23:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 126 states have (on average 1.4603174603174602) internal successors, (184), 153 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) [2021-10-15 20:23:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2021-10-15 20:23:38,251 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 12 [2021-10-15 20:23:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:38,252 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2021-10-15 20:23:38,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:38,259 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2021-10-15 20:23:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-15 20:23:38,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:38,262 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:38,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 20:23:38,263 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:38,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash -2056836231, now seen corresponding path program 1 times [2021-10-15 20:23:38,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:38,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912324175] [2021-10-15 20:23:38,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:38,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:38,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:38,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912324175] [2021-10-15 20:23:38,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912324175] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:38,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:38,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:38,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258444940] [2021-10-15 20:23:38,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:23:38,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:38,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:23:38,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:38,354 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:38,475 INFO L93 Difference]: Finished difference Result 199 states and 234 transitions. [2021-10-15 20:23:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:38,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-15 20:23:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:38,478 INFO L225 Difference]: With dead ends: 199 [2021-10-15 20:23:38,478 INFO L226 Difference]: Without dead ends: 193 [2021-10-15 20:23:38,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:23:38,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-15 20:23:38,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 151. [2021-10-15 20:23:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 128 states have (on average 1.421875) internal successors, (182), 150 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 182 transitions. [2021-10-15 20:23:38,515 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 182 transitions. Word has length 13 [2021-10-15 20:23:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:38,515 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 182 transitions. [2021-10-15 20:23:38,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 182 transitions. [2021-10-15 20:23:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-15 20:23:38,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:38,519 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:38,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 20:23:38,519 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:38,520 INFO L82 PathProgramCache]: Analyzing trace with hash 465285246, now seen corresponding path program 1 times [2021-10-15 20:23:38,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:38,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946287294] [2021-10-15 20:23:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:38,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:38,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:38,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946287294] [2021-10-15 20:23:38,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946287294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:38,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944229349] [2021-10-15 20:23:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:38,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:38,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:38,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:38,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:23:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:38,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 20:23:38,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:38,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944229349] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:38,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 20:23:38,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-15 20:23:38,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178936038] [2021-10-15 20:23:38,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:23:38,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:38,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:23:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:23:38,848 INFO L87 Difference]: Start difference. First operand 151 states and 182 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:38,985 INFO L93 Difference]: Finished difference Result 230 states and 270 transitions. [2021-10-15 20:23:38,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:38,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-15 20:23:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:38,988 INFO L225 Difference]: With dead ends: 230 [2021-10-15 20:23:38,988 INFO L226 Difference]: Without dead ends: 226 [2021-10-15 20:23:38,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:23:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-15 20:23:38,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 144. [2021-10-15 20:23:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 143 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 175 transitions. [2021-10-15 20:23:38,998 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 175 transitions. Word has length 13 [2021-10-15 20:23:38,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:38,999 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 175 transitions. [2021-10-15 20:23:38,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:38,999 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 175 transitions. [2021-10-15 20:23:39,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-15 20:23:39,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:39,001 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:39,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:39,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:39,223 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:39,223 INFO L82 PathProgramCache]: Analyzing trace with hash 662586488, now seen corresponding path program 1 times [2021-10-15 20:23:39,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:39,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084867680] [2021-10-15 20:23:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:39,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:39,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:39,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084867680] [2021-10-15 20:23:39,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084867680] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:39,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:39,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:23:39,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702241363] [2021-10-15 20:23:39,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:39,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:39,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:39,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:39,257 INFO L87 Difference]: Start difference. First operand 144 states and 175 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:39,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:39,331 INFO L93 Difference]: Finished difference Result 186 states and 219 transitions. [2021-10-15 20:23:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:39,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-15 20:23:39,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:39,333 INFO L225 Difference]: With dead ends: 186 [2021-10-15 20:23:39,333 INFO L226 Difference]: Without dead ends: 182 [2021-10-15 20:23:39,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:39,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-15 20:23:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2021-10-15 20:23:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 120 states have (on average 1.3916666666666666) internal successors, (167), 135 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 167 transitions. [2021-10-15 20:23:39,341 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 167 transitions. Word has length 14 [2021-10-15 20:23:39,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:39,342 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 167 transitions. [2021-10-15 20:23:39,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:39,342 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 167 transitions. [2021-10-15 20:23:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-15 20:23:39,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:39,347 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:39,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 20:23:39,348 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:39,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:39,349 INFO L82 PathProgramCache]: Analyzing trace with hash -47207071, now seen corresponding path program 1 times [2021-10-15 20:23:39,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:39,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127246550] [2021-10-15 20:23:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:39,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:39,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:39,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127246550] [2021-10-15 20:23:39,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127246550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:39,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:39,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:39,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290942869] [2021-10-15 20:23:39,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:23:39,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:39,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:23:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:39,444 INFO L87 Difference]: Start difference. First operand 136 states and 167 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:39,535 INFO L93 Difference]: Finished difference Result 184 states and 218 transitions. [2021-10-15 20:23:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:39,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-15 20:23:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:39,538 INFO L225 Difference]: With dead ends: 184 [2021-10-15 20:23:39,539 INFO L226 Difference]: Without dead ends: 182 [2021-10-15 20:23:39,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:23:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-15 20:23:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 138. [2021-10-15 20:23:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 123 states have (on average 1.3739837398373984) internal successors, (169), 137 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 169 transitions. [2021-10-15 20:23:39,549 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 169 transitions. Word has length 15 [2021-10-15 20:23:39,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:39,550 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 169 transitions. [2021-10-15 20:23:39,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:39,550 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 169 transitions. [2021-10-15 20:23:39,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-15 20:23:39,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:39,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:39,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 20:23:39,553 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:39,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:39,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1172929667, now seen corresponding path program 1 times [2021-10-15 20:23:39,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:39,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713968633] [2021-10-15 20:23:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:39,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:39,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:39,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713968633] [2021-10-15 20:23:39,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713968633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:39,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:39,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:39,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897311918] [2021-10-15 20:23:39,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:23:39,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:23:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:39,652 INFO L87 Difference]: Start difference. First operand 138 states and 169 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-10-15 20:23:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:39,735 INFO L93 Difference]: Finished difference Result 182 states and 217 transitions. [2021-10-15 20:23:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:39,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) Word has length 16 [2021-10-15 20:23:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:39,737 INFO L225 Difference]: With dead ends: 182 [2021-10-15 20:23:39,737 INFO L226 Difference]: Without dead ends: 180 [2021-10-15 20:23:39,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:23:39,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-15 20:23:39,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 132. [2021-10-15 20:23:39,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 119 states have (on average 1.361344537815126) internal successors, (162), 131 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 162 transitions. [2021-10-15 20:23:39,750 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 162 transitions. Word has length 16 [2021-10-15 20:23:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:39,750 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 162 transitions. [2021-10-15 20:23:39,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-10-15 20:23:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 162 transitions. [2021-10-15 20:23:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-15 20:23:39,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:39,751 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:39,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 20:23:39,752 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:39,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1012839294, now seen corresponding path program 1 times [2021-10-15 20:23:39,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:39,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467856019] [2021-10-15 20:23:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:39,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-15 20:23:39,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:39,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467856019] [2021-10-15 20:23:39,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467856019] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:39,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:39,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:39,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561822705] [2021-10-15 20:23:39,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:23:39,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:39,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:23:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:39,818 INFO L87 Difference]: Start difference. First operand 132 states and 162 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-10-15 20:23:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:39,908 INFO L93 Difference]: Finished difference Result 214 states and 250 transitions. [2021-10-15 20:23:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:39,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) Word has length 17 [2021-10-15 20:23:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:39,910 INFO L225 Difference]: With dead ends: 214 [2021-10-15 20:23:39,911 INFO L226 Difference]: Without dead ends: 210 [2021-10-15 20:23:39,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-15 20:23:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 123. [2021-10-15 20:23:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 113 states have (on average 1.3539823008849559) internal successors, (153), 122 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 153 transitions. [2021-10-15 20:23:39,922 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 153 transitions. Word has length 17 [2021-10-15 20:23:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:39,922 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 153 transitions. [2021-10-15 20:23:39,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-10-15 20:23:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 153 transitions. [2021-10-15 20:23:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-15 20:23:39,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:39,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:39,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 20:23:39,924 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:39,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:39,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1503531701, now seen corresponding path program 1 times [2021-10-15 20:23:39,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:39,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480175266] [2021-10-15 20:23:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:39,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:39,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:39,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480175266] [2021-10-15 20:23:39,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480175266] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:39,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:39,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:39,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694568721] [2021-10-15 20:23:39,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:23:39,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:39,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:23:39,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:39,995 INFO L87 Difference]: Start difference. First operand 123 states and 153 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2021-10-15 20:23:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:40,074 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2021-10-15 20:23:40,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:40,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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 18 [2021-10-15 20:23:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:40,077 INFO L225 Difference]: With dead ends: 167 [2021-10-15 20:23:40,077 INFO L226 Difference]: Without dead ends: 165 [2021-10-15 20:23:40,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:23:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-15 20:23:40,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2021-10-15 20:23:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 110 states have (on average 1.3454545454545455) internal successors, (148), 117 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:40,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 148 transitions. [2021-10-15 20:23:40,087 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 148 transitions. Word has length 18 [2021-10-15 20:23:40,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:40,088 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 148 transitions. [2021-10-15 20:23:40,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2021-10-15 20:23:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 148 transitions. [2021-10-15 20:23:40,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-15 20:23:40,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:40,089 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:40,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 20:23:40,090 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:40,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:40,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1714169845, now seen corresponding path program 1 times [2021-10-15 20:23:40,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:40,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267615226] [2021-10-15 20:23:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:40,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:40,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:40,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267615226] [2021-10-15 20:23:40,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267615226] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:40,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:40,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:23:40,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554768800] [2021-10-15 20:23:40,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:23:40,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:40,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:23:40,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:40,148 INFO L87 Difference]: Start difference. First operand 118 states and 148 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2021-10-15 20:23:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:40,202 INFO L93 Difference]: Finished difference Result 185 states and 229 transitions. [2021-10-15 20:23:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:23:40,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-15 20:23:40,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:40,203 INFO L225 Difference]: With dead ends: 185 [2021-10-15 20:23:40,204 INFO L226 Difference]: Without dead ends: 110 [2021-10-15 20:23:40,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:23:40,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-15 20:23:40,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-15 20:23:40,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 102 states have (on average 1.3235294117647058) internal successors, (135), 109 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2021-10-15 20:23:40,212 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 20 [2021-10-15 20:23:40,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:40,213 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2021-10-15 20:23:40,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2021-10-15 20:23:40,213 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2021-10-15 20:23:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-15 20:23:40,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:40,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:40,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-15 20:23:40,214 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:40,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:40,215 INFO L82 PathProgramCache]: Analyzing trace with hash 120036563, now seen corresponding path program 1 times [2021-10-15 20:23:40,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:40,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088572073] [2021-10-15 20:23:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:40,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:40,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:40,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088572073] [2021-10-15 20:23:40,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088572073] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:40,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:40,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:23:40,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122717234] [2021-10-15 20:23:40,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:23:40,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:23:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:40,277 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:40,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:40,335 INFO L93 Difference]: Finished difference Result 200 states and 242 transitions. [2021-10-15 20:23:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:40,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-15 20:23:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:40,336 INFO L225 Difference]: With dead ends: 200 [2021-10-15 20:23:40,336 INFO L226 Difference]: Without dead ends: 106 [2021-10-15 20:23:40,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:23:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-15 20:23:40,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2021-10-15 20:23:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 94 states have (on average 1.297872340425532) internal successors, (122), 101 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2021-10-15 20:23:40,345 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 29 [2021-10-15 20:23:40,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:40,345 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2021-10-15 20:23:40,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2021-10-15 20:23:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-15 20:23:40,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:40,346 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:40,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-15 20:23:40,347 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:40,347 INFO L82 PathProgramCache]: Analyzing trace with hash -53723030, now seen corresponding path program 1 times [2021-10-15 20:23:40,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:40,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180845634] [2021-10-15 20:23:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:40,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:40,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:40,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180845634] [2021-10-15 20:23:40,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180845634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:40,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132400892] [2021-10-15 20:23:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:40,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:40,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:40,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:40,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 20:23:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:40,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 20:23:40,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:40,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132400892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:40,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:40,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-15 20:23:40,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926038954] [2021-10-15 20:23:40,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:23:40,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:23:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:23:40,572 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:40,667 INFO L93 Difference]: Finished difference Result 248 states and 290 transitions. [2021-10-15 20:23:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:23:40,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-15 20:23:40,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:40,669 INFO L225 Difference]: With dead ends: 248 [2021-10-15 20:23:40,670 INFO L226 Difference]: Without dead ends: 165 [2021-10-15 20:23:40,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:23:40,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-15 20:23:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 112. [2021-10-15 20:23:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 111 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2021-10-15 20:23:40,683 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 33 [2021-10-15 20:23:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:40,683 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2021-10-15 20:23:40,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2021-10-15 20:23:40,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-15 20:23:40,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:40,685 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:40,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:40,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-15 20:23:40,895 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:40,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1040699320, now seen corresponding path program 1 times [2021-10-15 20:23:40,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:40,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482329449] [2021-10-15 20:23:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:40,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:40,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:40,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482329449] [2021-10-15 20:23:40,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482329449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:40,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103646520] [2021-10-15 20:23:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:40,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:40,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:40,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:40,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 20:23:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:41,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-15 20:23:41,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-15 20:23:41,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103646520] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:41,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 20:23:41,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2021-10-15 20:23:41,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416205286] [2021-10-15 20:23:41,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:23:41,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:23:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-15 20:23:41,214 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:41,381 INFO L93 Difference]: Finished difference Result 212 states and 254 transitions. [2021-10-15 20:23:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:23:41,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-15 20:23:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:41,384 INFO L225 Difference]: With dead ends: 212 [2021-10-15 20:23:41,384 INFO L226 Difference]: Without dead ends: 95 [2021-10-15 20:23:41,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-10-15 20:23:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-15 20:23:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2021-10-15 20:23:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 1.2771084337349397) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:41,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2021-10-15 20:23:41,393 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 34 [2021-10-15 20:23:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:41,394 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2021-10-15 20:23:41,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2021-10-15 20:23:41,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-15 20:23:41,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:41,396 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:41,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:41,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-15 20:23:41,611 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:41,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:41,611 INFO L82 PathProgramCache]: Analyzing trace with hash 262910457, now seen corresponding path program 1 times [2021-10-15 20:23:41,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:41,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303768653] [2021-10-15 20:23:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:41,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:41,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:41,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303768653] [2021-10-15 20:23:41,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303768653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:41,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446626030] [2021-10-15 20:23:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:41,698 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:41,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:41,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:41,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-15 20:23:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:41,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-15 20:23:41,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-15 20:23:41,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446626030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:41,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 20:23:41,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-10-15 20:23:41,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190199100] [2021-10-15 20:23:41,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:23:41,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:41,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:23:41,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-15 20:23:41,933 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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) [2021-10-15 20:23:42,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:42,036 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-10-15 20:23:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:23:42,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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) Word has length 38 [2021-10-15 20:23:42,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:42,039 INFO L225 Difference]: With dead ends: 120 [2021-10-15 20:23:42,039 INFO L226 Difference]: Without dead ends: 95 [2021-10-15 20:23:42,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-15 20:23:42,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-15 20:23:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2021-10-15 20:23:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 90 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2021-10-15 20:23:42,048 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 38 [2021-10-15 20:23:42,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:42,049 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2021-10-15 20:23:42,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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) [2021-10-15 20:23:42,049 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2021-10-15 20:23:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-15 20:23:42,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:42,050 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:42,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:42,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:42,267 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:42,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1498651123, now seen corresponding path program 1 times [2021-10-15 20:23:42,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:42,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922161505] [2021-10-15 20:23:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:42,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:42,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:42,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922161505] [2021-10-15 20:23:42,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922161505] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:42,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040379230] [2021-10-15 20:23:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:42,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:42,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:42,363 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:42,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-15 20:23:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:42,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-15 20:23:42,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-15 20:23:42,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040379230] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:42,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 20:23:42,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2021-10-15 20:23:42,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048350843] [2021-10-15 20:23:42,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:23:42,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:42,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:23:42,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-15 20:23:42,671 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:42,851 INFO L93 Difference]: Finished difference Result 141 states and 160 transitions. [2021-10-15 20:23:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 20:23:42,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2021-10-15 20:23:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:42,853 INFO L225 Difference]: With dead ends: 141 [2021-10-15 20:23:42,853 INFO L226 Difference]: Without dead ends: 93 [2021-10-15 20:23:42,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 97.7ms TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-15 20:23:42,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-15 20:23:42,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-10-15 20:23:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 90 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2021-10-15 20:23:42,861 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 40 [2021-10-15 20:23:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:42,861 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2021-10-15 20:23:42,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2021-10-15 20:23:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-15 20:23:42,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:42,862 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:42,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:43,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-15 20:23:43,075 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:43,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1227759650, now seen corresponding path program 1 times [2021-10-15 20:23:43,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:43,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988278095] [2021-10-15 20:23:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:43,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:43,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:43,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988278095] [2021-10-15 20:23:43,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988278095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:43,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813326340] [2021-10-15 20:23:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:43,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:43,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:43,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:43,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-15 20:23:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:43,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 20:23:43,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-15 20:23:43,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813326340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:43,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 20:23:43,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-15 20:23:43,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059915136] [2021-10-15 20:23:43,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:23:43,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:43,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:23:43,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-15 20:23:43,410 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:43,521 INFO L93 Difference]: Finished difference Result 219 states and 239 transitions. [2021-10-15 20:23:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:23:43,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-15 20:23:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:43,523 INFO L225 Difference]: With dead ends: 219 [2021-10-15 20:23:43,523 INFO L226 Difference]: Without dead ends: 196 [2021-10-15 20:23:43,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-15 20:23:43,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-15 20:23:43,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 118. [2021-10-15 20:23:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 110 states have (on average 1.2272727272727273) internal successors, (135), 117 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2021-10-15 20:23:43,534 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 44 [2021-10-15 20:23:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:43,534 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2021-10-15 20:23:43,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:43,534 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2021-10-15 20:23:43,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-15 20:23:43,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:43,535 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:43,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:43,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-15 20:23:43,751 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:43,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1238971132, now seen corresponding path program 1 times [2021-10-15 20:23:43,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:43,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291065921] [2021-10-15 20:23:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:43,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:43,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:43,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291065921] [2021-10-15 20:23:43,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291065921] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:43,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921720613] [2021-10-15 20:23:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:43,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:43,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:43,817 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:43,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-15 20:23:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:43,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 20:23:43,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:44,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921720613] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:44,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:44,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-15 20:23:44,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310547712] [2021-10-15 20:23:44,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:23:44,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:44,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:23:44,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:23:44,225 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2021-10-15 20:23:44,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:44,341 INFO L93 Difference]: Finished difference Result 214 states and 245 transitions. [2021-10-15 20:23:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:23:44,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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 46 [2021-10-15 20:23:44,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:44,343 INFO L225 Difference]: With dead ends: 214 [2021-10-15 20:23:44,343 INFO L226 Difference]: Without dead ends: 120 [2021-10-15 20:23:44,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:23:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-15 20:23:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-10-15 20:23:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 110 states have (on average 1.2181818181818183) internal successors, (134), 117 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2021-10-15 20:23:44,353 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 46 [2021-10-15 20:23:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:44,353 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2021-10-15 20:23:44,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2021-10-15 20:23:44,354 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2021-10-15 20:23:44,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-15 20:23:44,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:44,354 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:44,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:44,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:44,555 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:44,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:44,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1279868005, now seen corresponding path program 1 times [2021-10-15 20:23:44,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:44,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628758947] [2021-10-15 20:23:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:44,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:44,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:44,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628758947] [2021-10-15 20:23:44,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628758947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:44,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419216500] [2021-10-15 20:23:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:44,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:44,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:44,635 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:44,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-15 20:23:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:44,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 20:23:44,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:44,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419216500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:44,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:44,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-15 20:23:44,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763342449] [2021-10-15 20:23:44,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:23:44,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:44,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:23:44,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:23:44,946 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:45,019 INFO L93 Difference]: Finished difference Result 261 states and 295 transitions. [2021-10-15 20:23:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:23:45,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-15 20:23:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:45,021 INFO L225 Difference]: With dead ends: 261 [2021-10-15 20:23:45,021 INFO L226 Difference]: Without dead ends: 170 [2021-10-15 20:23:45,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:23:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-15 20:23:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 123. [2021-10-15 20:23:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 115 states have (on average 1.2173913043478262) internal successors, (140), 122 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 140 transitions. [2021-10-15 20:23:45,051 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 140 transitions. Word has length 50 [2021-10-15 20:23:45,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:45,051 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 140 transitions. [2021-10-15 20:23:45,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:45,051 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 140 transitions. [2021-10-15 20:23:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-15 20:23:45,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:45,052 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:45,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:45,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:45,279 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:45,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1864699345, now seen corresponding path program 2 times [2021-10-15 20:23:45,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:45,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953577288] [2021-10-15 20:23:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:45,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:45,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:45,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953577288] [2021-10-15 20:23:45,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953577288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:45,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653999169] [2021-10-15 20:23:45,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:23:45,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:45,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:45,344 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:45,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-15 20:23:45,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-15 20:23:45,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:23:45,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 20:23:45,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-15 20:23:45,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653999169] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:45,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 20:23:45,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2021-10-15 20:23:45,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846794547] [2021-10-15 20:23:45,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:23:45,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:45,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:23:45,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-15 20:23:45,685 INFO L87 Difference]: Start difference. First operand 123 states and 140 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:45,780 INFO L93 Difference]: Finished difference Result 186 states and 204 transitions. [2021-10-15 20:23:45,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:23:45,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-15 20:23:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:45,782 INFO L225 Difference]: With dead ends: 186 [2021-10-15 20:23:45,782 INFO L226 Difference]: Without dead ends: 185 [2021-10-15 20:23:45,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 70.5ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-15 20:23:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-15 20:23:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2021-10-15 20:23:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 137 states have (on average 1.2116788321167884) internal successors, (166), 144 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 166 transitions. [2021-10-15 20:23:45,793 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 166 transitions. Word has length 51 [2021-10-15 20:23:45,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:45,794 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 166 transitions. [2021-10-15 20:23:45,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:45,794 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 166 transitions. [2021-10-15 20:23:45,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-15 20:23:45,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:45,795 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:45,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:46,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:46,019 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:46,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:46,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1557878557, now seen corresponding path program 1 times [2021-10-15 20:23:46,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:46,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196850930] [2021-10-15 20:23:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:46,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:46,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:46,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196850930] [2021-10-15 20:23:46,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196850930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:46,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849966003] [2021-10-15 20:23:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:46,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:46,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:46,083 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:46,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-15 20:23:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:46,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 20:23:46,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:46,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849966003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:46,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:46,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-15 20:23:46,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294013840] [2021-10-15 20:23:46,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:23:46,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:46,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:23:46,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:23:46,518 INFO L87 Difference]: Start difference. First operand 145 states and 166 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:46,651 INFO L93 Difference]: Finished difference Result 263 states and 302 transitions. [2021-10-15 20:23:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:23:46,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 51 [2021-10-15 20:23:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:46,653 INFO L225 Difference]: With dead ends: 263 [2021-10-15 20:23:46,653 INFO L226 Difference]: Without dead ends: 147 [2021-10-15 20:23:46,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:23:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-15 20:23:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2021-10-15 20:23:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 144 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 165 transitions. [2021-10-15 20:23:46,664 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 165 transitions. Word has length 51 [2021-10-15 20:23:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:46,665 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 165 transitions. [2021-10-15 20:23:46,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:46,665 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 165 transitions. [2021-10-15 20:23:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-15 20:23:46,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:46,666 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:46,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:46,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:46,895 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:46,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:46,895 INFO L82 PathProgramCache]: Analyzing trace with hash 846729722, now seen corresponding path program 1 times [2021-10-15 20:23:46,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:46,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247950816] [2021-10-15 20:23:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:46,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:46,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:46,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247950816] [2021-10-15 20:23:46,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247950816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:46,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216418521] [2021-10-15 20:23:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:46,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:46,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:46,947 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:46,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-15 20:23:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:47,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 20:23:47,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:47,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216418521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:47,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:47,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-15 20:23:47,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744659971] [2021-10-15 20:23:47,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:23:47,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:47,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:23:47,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-15 20:23:47,311 INFO L87 Difference]: Start difference. First operand 145 states and 165 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:47,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:47,387 INFO L93 Difference]: Finished difference Result 293 states and 332 transitions. [2021-10-15 20:23:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:23:47,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-15 20:23:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:47,389 INFO L225 Difference]: With dead ends: 293 [2021-10-15 20:23:47,389 INFO L226 Difference]: Without dead ends: 180 [2021-10-15 20:23:47,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-15 20:23:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-15 20:23:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 150. [2021-10-15 20:23:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 142 states have (on average 1.204225352112676) internal successors, (171), 149 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) [2021-10-15 20:23:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 171 transitions. [2021-10-15 20:23:47,400 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 171 transitions. Word has length 55 [2021-10-15 20:23:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:47,401 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 171 transitions. [2021-10-15 20:23:47,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 171 transitions. [2021-10-15 20:23:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-15 20:23:47,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:47,402 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:47,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:47,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:47,619 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:47,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash -979368296, now seen corresponding path program 2 times [2021-10-15 20:23:47,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:47,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658935768] [2021-10-15 20:23:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:47,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:47,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:47,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658935768] [2021-10-15 20:23:47,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658935768] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:47,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134773440] [2021-10-15 20:23:47,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:23:47,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:47,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:47,700 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:47,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-15 20:23:48,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-15 20:23:48,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:23:48,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-15 20:23:48,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-15 20:23:48,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134773440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:48,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 20:23:48,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-10-15 20:23:48,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208525744] [2021-10-15 20:23:48,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:23:48,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:48,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:23:48,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-15 20:23:48,269 INFO L87 Difference]: Start difference. First operand 150 states and 171 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:48,439 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2021-10-15 20:23:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:23:48,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-10-15 20:23:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:48,441 INFO L225 Difference]: With dead ends: 189 [2021-10-15 20:23:48,441 INFO L226 Difference]: Without dead ends: 188 [2021-10-15 20:23:48,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 142.2ms TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-10-15 20:23:48,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-15 20:23:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 147. [2021-10-15 20:23:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 139 states have (on average 1.2014388489208634) internal successors, (167), 146 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2021-10-15 20:23:48,452 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 167 transitions. Word has length 56 [2021-10-15 20:23:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:48,453 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 167 transitions. [2021-10-15 20:23:48,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 167 transitions. [2021-10-15 20:23:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-15 20:23:48,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:48,454 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:48,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:48,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:48,663 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:48,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:48,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1217155573, now seen corresponding path program 1 times [2021-10-15 20:23:48,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:48,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729914232] [2021-10-15 20:23:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:48,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:48,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:48,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729914232] [2021-10-15 20:23:48,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729914232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:48,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323665319] [2021-10-15 20:23:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:48,749 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:48,750 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:48,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-15 20:23:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:48,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-15 20:23:48,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-15 20:23:49,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323665319] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:49,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 20:23:49,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-10-15 20:23:49,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079261993] [2021-10-15 20:23:49,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:23:49,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:49,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:23:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-15 20:23:49,291 INFO L87 Difference]: Start difference. First operand 147 states and 167 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:49,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:49,547 INFO L93 Difference]: Finished difference Result 205 states and 226 transitions. [2021-10-15 20:23:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-15 20:23:49,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-15 20:23:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:49,549 INFO L225 Difference]: With dead ends: 205 [2021-10-15 20:23:49,549 INFO L226 Difference]: Without dead ends: 203 [2021-10-15 20:23:49,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 201.0ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-10-15 20:23:49,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-15 20:23:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2021-10-15 20:23:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 150 states have (on average 1.1866666666666668) internal successors, (178), 156 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:49,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 178 transitions. [2021-10-15 20:23:49,562 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 178 transitions. Word has length 57 [2021-10-15 20:23:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:49,562 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 178 transitions. [2021-10-15 20:23:49,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:49,563 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 178 transitions. [2021-10-15 20:23:49,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-15 20:23:49,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:49,566 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:49,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:49,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-15 20:23:49,795 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:49,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:49,795 INFO L82 PathProgramCache]: Analyzing trace with hash 922883270, now seen corresponding path program 1 times [2021-10-15 20:23:49,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:49,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625877317] [2021-10-15 20:23:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:49,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:49,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:49,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625877317] [2021-10-15 20:23:49,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625877317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:49,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138766316] [2021-10-15 20:23:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:49,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:49,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:49,895 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:49,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-15 20:23:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:50,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-15 20:23:50,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-15 20:23:50,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138766316] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:50,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 20:23:50,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-10-15 20:23:50,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605100570] [2021-10-15 20:23:50,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:23:50,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:50,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:23:50,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-15 20:23:50,474 INFO L87 Difference]: Start difference. First operand 157 states and 178 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:50,691 INFO L93 Difference]: Finished difference Result 202 states and 220 transitions. [2021-10-15 20:23:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-15 20:23:50,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-15 20:23:50,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:50,693 INFO L225 Difference]: With dead ends: 202 [2021-10-15 20:23:50,693 INFO L226 Difference]: Without dead ends: 201 [2021-10-15 20:23:50,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 202.9ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-10-15 20:23:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-15 20:23:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 158. [2021-10-15 20:23:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 151 states have (on average 1.185430463576159) internal successors, (179), 157 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 179 transitions. [2021-10-15 20:23:50,711 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 179 transitions. Word has length 58 [2021-10-15 20:23:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:50,711 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 179 transitions. [2021-10-15 20:23:50,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:50,712 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 179 transitions. [2021-10-15 20:23:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-15 20:23:50,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:50,717 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:50,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:50,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-15 20:23:50,943 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:50,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:50,943 INFO L82 PathProgramCache]: Analyzing trace with hash 195632942, now seen corresponding path program 1 times [2021-10-15 20:23:50,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:50,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043978698] [2021-10-15 20:23:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:50,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:51,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:51,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043978698] [2021-10-15 20:23:51,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043978698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:51,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068805851] [2021-10-15 20:23:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:51,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:51,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:51,044 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:51,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-15 20:23:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:51,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-15 20:23:51,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:51,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068805851] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:51,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:51,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-15 20:23:51,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530586346] [2021-10-15 20:23:51,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:23:51,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:51,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:23:51,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-15 20:23:51,582 INFO L87 Difference]: Start difference. First operand 158 states and 179 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:51,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:51,713 INFO L93 Difference]: Finished difference Result 284 states and 323 transitions. [2021-10-15 20:23:51,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:23:51,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-15 20:23:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:51,715 INFO L225 Difference]: With dead ends: 284 [2021-10-15 20:23:51,715 INFO L226 Difference]: Without dead ends: 160 [2021-10-15 20:23:51,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-15 20:23:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-15 20:23:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2021-10-15 20:23:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 151 states have (on average 1.1788079470198676) internal successors, (178), 157 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 178 transitions. [2021-10-15 20:23:51,726 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 178 transitions. Word has length 58 [2021-10-15 20:23:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:51,726 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 178 transitions. [2021-10-15 20:23:51,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 178 transitions. [2021-10-15 20:23:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-15 20:23:51,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:51,728 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:51,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:51,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-15 20:23:51,951 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:51,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:51,951 INFO L82 PathProgramCache]: Analyzing trace with hash -952804347, now seen corresponding path program 1 times [2021-10-15 20:23:51,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:51,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917945662] [2021-10-15 20:23:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:51,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:52,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:52,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917945662] [2021-10-15 20:23:52,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917945662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:52,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395094121] [2021-10-15 20:23:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:52,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:52,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:52,017 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:52,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-15 20:23:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:52,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 20:23:52,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:52,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395094121] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:52,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:52,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-15 20:23:52,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545433643] [2021-10-15 20:23:52,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-15 20:23:52,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:52,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-15 20:23:52,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-15 20:23:52,512 INFO L87 Difference]: Start difference. First operand 158 states and 178 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:52,619 INFO L93 Difference]: Finished difference Result 311 states and 350 transitions. [2021-10-15 20:23:52,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:23:52,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-15 20:23:52,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:52,624 INFO L225 Difference]: With dead ends: 311 [2021-10-15 20:23:52,624 INFO L226 Difference]: Without dead ends: 190 [2021-10-15 20:23:52,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-15 20:23:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-15 20:23:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 163. [2021-10-15 20:23:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 156 states have (on average 1.1794871794871795) internal successors, (184), 162 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) [2021-10-15 20:23:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 184 transitions. [2021-10-15 20:23:52,636 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 184 transitions. Word has length 62 [2021-10-15 20:23:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:52,636 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 184 transitions. [2021-10-15 20:23:52,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 184 transitions. [2021-10-15 20:23:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-15 20:23:52,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:52,638 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:52,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:52,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-15 20:23:52,859 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:52,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:52,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2018499545, now seen corresponding path program 2 times [2021-10-15 20:23:52,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:52,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629804064] [2021-10-15 20:23:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:52,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:52,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:52,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629804064] [2021-10-15 20:23:52,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629804064] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:52,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988789841] [2021-10-15 20:23:52,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:23:52,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:52,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:52,954 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:52,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-15 20:23:53,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 20:23:53,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:23:53,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-15 20:23:53,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:53,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988789841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:53,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:53,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-15 20:23:53,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116124379] [2021-10-15 20:23:53,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-15 20:23:53,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:53,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-15 20:23:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-15 20:23:53,721 INFO L87 Difference]: Start difference. First operand 163 states and 184 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 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) [2021-10-15 20:23:53,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:53,840 INFO L93 Difference]: Finished difference Result 289 states and 328 transitions. [2021-10-15 20:23:53,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:23:53,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-15 20:23:53,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:53,842 INFO L225 Difference]: With dead ends: 289 [2021-10-15 20:23:53,842 INFO L226 Difference]: Without dead ends: 165 [2021-10-15 20:23:53,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 70.7ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-15 20:23:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-15 20:23:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2021-10-15 20:23:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 156 states have (on average 1.1730769230769231) internal successors, (183), 162 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2021-10-15 20:23:53,858 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 63 [2021-10-15 20:23:53,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:53,859 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2021-10-15 20:23:53,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 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) [2021-10-15 20:23:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2021-10-15 20:23:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-15 20:23:53,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:53,860 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:53,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:54,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-15 20:23:54,065 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:54,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:54,065 INFO L82 PathProgramCache]: Analyzing trace with hash -746075344, now seen corresponding path program 2 times [2021-10-15 20:23:54,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:54,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397052692] [2021-10-15 20:23:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:54,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:54,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:54,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397052692] [2021-10-15 20:23:54,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397052692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:54,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226520576] [2021-10-15 20:23:54,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:23:54,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:54,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:54,164 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:54,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-15 20:23:54,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 20:23:54,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:23:54,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 20:23:54,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:54,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226520576] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:54,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:54,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-15 20:23:54,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914395302] [2021-10-15 20:23:54,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 20:23:54,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:54,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 20:23:54,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-15 20:23:54,714 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:54,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:54,803 INFO L93 Difference]: Finished difference Result 316 states and 355 transitions. [2021-10-15 20:23:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 20:23:54,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-15 20:23:54,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:54,805 INFO L225 Difference]: With dead ends: 316 [2021-10-15 20:23:54,805 INFO L226 Difference]: Without dead ends: 195 [2021-10-15 20:23:54,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 28.1ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-15 20:23:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-15 20:23:54,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 168. [2021-10-15 20:23:54,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 161 states have (on average 1.173913043478261) internal successors, (189), 167 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:54,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2021-10-15 20:23:54,819 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 67 [2021-10-15 20:23:54,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:54,820 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2021-10-15 20:23:54,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:54,820 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2021-10-15 20:23:54,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-15 20:23:54,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:54,822 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:54,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:55,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:55,027 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:55,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:55,027 INFO L82 PathProgramCache]: Analyzing trace with hash -162835954, now seen corresponding path program 3 times [2021-10-15 20:23:55,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:55,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831024495] [2021-10-15 20:23:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:55,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:55,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:55,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831024495] [2021-10-15 20:23:55,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831024495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:55,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491164691] [2021-10-15 20:23:55,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 20:23:55,131 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:55,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:55,132 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:55,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-15 20:23:55,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-15 20:23:55,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:23:55,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-15 20:23:55,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:56,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491164691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:56,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:56,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-15 20:23:56,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100209579] [2021-10-15 20:23:56,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 20:23:56,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:56,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 20:23:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-15 20:23:56,183 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:56,380 INFO L93 Difference]: Finished difference Result 294 states and 333 transitions. [2021-10-15 20:23:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 20:23:56,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-15 20:23:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:56,383 INFO L225 Difference]: With dead ends: 294 [2021-10-15 20:23:56,383 INFO L226 Difference]: Without dead ends: 170 [2021-10-15 20:23:56,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-15 20:23:56,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-15 20:23:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2021-10-15 20:23:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 161 states have (on average 1.1677018633540373) internal successors, (188), 167 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 188 transitions. [2021-10-15 20:23:56,394 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 188 transitions. Word has length 68 [2021-10-15 20:23:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:56,395 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 188 transitions. [2021-10-15 20:23:56,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 188 transitions. [2021-10-15 20:23:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-15 20:23:56,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:56,396 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:56,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:56,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:56,603 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:56,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:56,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1573068517, now seen corresponding path program 3 times [2021-10-15 20:23:56,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:56,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269697221] [2021-10-15 20:23:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:56,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:56,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:56,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269697221] [2021-10-15 20:23:56,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269697221] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:56,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275387972] [2021-10-15 20:23:56,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 20:23:56,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:56,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:56,681 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:56,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-15 20:23:58,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-15 20:23:58,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:23:58,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-15 20:23:58,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:58,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275387972] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:58,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:58,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-15 20:23:58,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926698345] [2021-10-15 20:23:58,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-15 20:23:58,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-15 20:23:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-15 20:23:58,301 INFO L87 Difference]: Start difference. First operand 168 states and 188 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:58,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:58,385 INFO L93 Difference]: Finished difference Result 321 states and 360 transitions. [2021-10-15 20:23:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 20:23:58,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-10-15 20:23:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:58,407 INFO L225 Difference]: With dead ends: 321 [2021-10-15 20:23:58,407 INFO L226 Difference]: Without dead ends: 200 [2021-10-15 20:23:58,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-15 20:23:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-15 20:23:58,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 173. [2021-10-15 20:23:58,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 166 states have (on average 1.1686746987951808) internal successors, (194), 172 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 194 transitions. [2021-10-15 20:23:58,419 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 194 transitions. Word has length 72 [2021-10-15 20:23:58,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:58,419 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 194 transitions. [2021-10-15 20:23:58,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 194 transitions. [2021-10-15 20:23:58,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-15 20:23:58,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:58,421 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:58,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:58,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:58,626 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:23:58,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:58,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1283820295, now seen corresponding path program 4 times [2021-10-15 20:23:58,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:58,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15174150] [2021-10-15 20:23:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:58,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:58,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:23:58,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15174150] [2021-10-15 20:23:58,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15174150] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:58,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515710156] [2021-10-15 20:23:58,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-15 20:23:58,754 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:23:58,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:58,755 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:23:58,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-15 20:23:59,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-15 20:23:59,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:23:59,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-15 20:23:59,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:59,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515710156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:23:59,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:23:59,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-15 20:23:59,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718558056] [2021-10-15 20:23:59,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-15 20:23:59,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:23:59,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-15 20:23:59,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-15 20:23:59,610 INFO L87 Difference]: Start difference. First operand 173 states and 194 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:59,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:23:59,764 INFO L93 Difference]: Finished difference Result 299 states and 338 transitions. [2021-10-15 20:23:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 20:23:59,767 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-10-15 20:23:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:23:59,768 INFO L225 Difference]: With dead ends: 299 [2021-10-15 20:23:59,768 INFO L226 Difference]: Without dead ends: 175 [2021-10-15 20:23:59,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-15 20:23:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-15 20:23:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2021-10-15 20:23:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 166 states have (on average 1.1626506024096386) internal successors, (193), 172 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 193 transitions. [2021-10-15 20:23:59,781 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 193 transitions. Word has length 73 [2021-10-15 20:23:59,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:23:59,782 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 193 transitions. [2021-10-15 20:23:59,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:23:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 193 transitions. [2021-10-15 20:23:59,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-15 20:23:59,783 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:23:59,783 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:23:59,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:00,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-15 20:24:00,007 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:00,008 INFO L82 PathProgramCache]: Analyzing trace with hash -679422896, now seen corresponding path program 4 times [2021-10-15 20:24:00,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:00,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479041706] [2021-10-15 20:24:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:00,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:00,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:00,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479041706] [2021-10-15 20:24:00,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479041706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:00,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622132963] [2021-10-15 20:24:00,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-15 20:24:00,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:00,099 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:00,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-15 20:24:00,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-15 20:24:00,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:00,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 20:24:00,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:00,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622132963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:00,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:00,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-15 20:24:00,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242893217] [2021-10-15 20:24:00,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 20:24:00,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:00,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 20:24:00,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-15 20:24:00,804 INFO L87 Difference]: Start difference. First operand 173 states and 193 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:00,903 INFO L93 Difference]: Finished difference Result 326 states and 365 transitions. [2021-10-15 20:24:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 20:24:00,904 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-15 20:24:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:00,905 INFO L225 Difference]: With dead ends: 326 [2021-10-15 20:24:00,905 INFO L226 Difference]: Without dead ends: 205 [2021-10-15 20:24:00,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-15 20:24:00,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-15 20:24:00,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 178. [2021-10-15 20:24:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 171 states have (on average 1.1637426900584795) internal successors, (199), 177 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:00,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2021-10-15 20:24:00,920 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 77 [2021-10-15 20:24:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:00,921 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2021-10-15 20:24:00,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:00,921 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2021-10-15 20:24:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-15 20:24:00,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:00,922 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:00,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:01,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-15 20:24:01,151 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:01,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1903389934, now seen corresponding path program 5 times [2021-10-15 20:24:01,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:01,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125867301] [2021-10-15 20:24:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:01,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:01,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:01,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125867301] [2021-10-15 20:24:01,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125867301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:01,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826386727] [2021-10-15 20:24:01,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-15 20:24:01,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:01,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:01,292 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:01,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-15 20:24:01,919 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-15 20:24:01,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:01,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-15 20:24:01,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:02,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826386727] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:02,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:02,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-15 20:24:02,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176457597] [2021-10-15 20:24:02,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 20:24:02,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:02,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 20:24:02,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-15 20:24:02,356 INFO L87 Difference]: Start difference. First operand 178 states and 199 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:02,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:02,527 INFO L93 Difference]: Finished difference Result 304 states and 343 transitions. [2021-10-15 20:24:02,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 20:24:02,527 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-15 20:24:02,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:02,529 INFO L225 Difference]: With dead ends: 304 [2021-10-15 20:24:02,529 INFO L226 Difference]: Without dead ends: 180 [2021-10-15 20:24:02,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 7 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-15 20:24:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-15 20:24:02,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2021-10-15 20:24:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 171 states have (on average 1.1578947368421053) internal successors, (198), 177 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2021-10-15 20:24:02,540 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 78 [2021-10-15 20:24:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:02,540 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2021-10-15 20:24:02,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2021-10-15 20:24:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-15 20:24:02,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:02,542 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:02,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:02,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-15 20:24:02,755 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:02,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:02,755 INFO L82 PathProgramCache]: Analyzing trace with hash 2141374917, now seen corresponding path program 5 times [2021-10-15 20:24:02,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:02,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843298115] [2021-10-15 20:24:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:02,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:02,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:02,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843298115] [2021-10-15 20:24:02,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843298115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:02,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134610312] [2021-10-15 20:24:02,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-15 20:24:02,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:02,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:02,865 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:02,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-15 20:24:03,459 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-15 20:24:03,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:03,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-15 20:24:03,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:03,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134610312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:03,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:03,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-15 20:24:03,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643536467] [2021-10-15 20:24:03,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-15 20:24:03,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:03,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-15 20:24:03,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-15 20:24:03,691 INFO L87 Difference]: Start difference. First operand 178 states and 198 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:03,791 INFO L93 Difference]: Finished difference Result 331 states and 370 transitions. [2021-10-15 20:24:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-15 20:24:03,792 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-10-15 20:24:03,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:03,794 INFO L225 Difference]: With dead ends: 331 [2021-10-15 20:24:03,794 INFO L226 Difference]: Without dead ends: 210 [2021-10-15 20:24:03,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-15 20:24:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-15 20:24:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 183. [2021-10-15 20:24:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 176 states have (on average 1.1590909090909092) internal successors, (204), 182 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 204 transitions. [2021-10-15 20:24:03,806 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 204 transitions. Word has length 82 [2021-10-15 20:24:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:03,807 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 204 transitions. [2021-10-15 20:24:03,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 204 transitions. [2021-10-15 20:24:03,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-15 20:24:03,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:03,808 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:03,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:04,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-15 20:24:04,023 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:04,023 INFO L82 PathProgramCache]: Analyzing trace with hash -846191079, now seen corresponding path program 6 times [2021-10-15 20:24:04,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:04,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431859065] [2021-10-15 20:24:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:04,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:04,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:04,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431859065] [2021-10-15 20:24:04,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431859065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:04,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783799326] [2021-10-15 20:24:04,219 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-15 20:24:04,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:04,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:04,219 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:04,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-15 20:24:06,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-15 20:24:06,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:06,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-15 20:24:06,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:06,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783799326] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:06,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:06,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-15 20:24:06,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894587922] [2021-10-15 20:24:06,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-15 20:24:06,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:06,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-15 20:24:06,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-15 20:24:06,707 INFO L87 Difference]: Start difference. First operand 183 states and 204 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:07,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:07,042 INFO L93 Difference]: Finished difference Result 309 states and 348 transitions. [2021-10-15 20:24:07,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-15 20:24:07,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-15 20:24:07,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:07,045 INFO L225 Difference]: With dead ends: 309 [2021-10-15 20:24:07,046 INFO L226 Difference]: Without dead ends: 185 [2021-10-15 20:24:07,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 162.8ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-15 20:24:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-15 20:24:07,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2021-10-15 20:24:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 176 states have (on average 1.1534090909090908) internal successors, (203), 182 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 203 transitions. [2021-10-15 20:24:07,062 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 203 transitions. Word has length 83 [2021-10-15 20:24:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:07,063 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 203 transitions. [2021-10-15 20:24:07,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 203 transitions. [2021-10-15 20:24:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-15 20:24:07,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:07,064 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:07,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:07,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:07,271 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:07,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:07,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1625754256, now seen corresponding path program 6 times [2021-10-15 20:24:07,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:07,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42043169] [2021-10-15 20:24:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:07,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:07,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:07,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42043169] [2021-10-15 20:24:07,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42043169] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:07,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123651645] [2021-10-15 20:24:07,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-15 20:24:07,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:07,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:07,399 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:07,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-15 20:24:08,039 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-10-15 20:24:08,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:08,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-15 20:24:08,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:08,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123651645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:08,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:08,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-15 20:24:08,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522562316] [2021-10-15 20:24:08,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-15 20:24:08,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:08,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-15 20:24:08,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-15 20:24:08,295 INFO L87 Difference]: Start difference. First operand 183 states and 203 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:08,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:08,398 INFO L93 Difference]: Finished difference Result 336 states and 375 transitions. [2021-10-15 20:24:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-15 20:24:08,399 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-10-15 20:24:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:08,403 INFO L225 Difference]: With dead ends: 336 [2021-10-15 20:24:08,403 INFO L226 Difference]: Without dead ends: 215 [2021-10-15 20:24:08,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-15 20:24:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-15 20:24:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 188. [2021-10-15 20:24:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 181 states have (on average 1.1546961325966851) internal successors, (209), 187 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 209 transitions. [2021-10-15 20:24:08,415 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 209 transitions. Word has length 87 [2021-10-15 20:24:08,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:08,416 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 209 transitions. [2021-10-15 20:24:08,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 209 transitions. [2021-10-15 20:24:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-15 20:24:08,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:08,417 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:08,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-15 20:24:08,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:08,623 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:08,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:08,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1663078450, now seen corresponding path program 7 times [2021-10-15 20:24:08,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:08,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936702575] [2021-10-15 20:24:08,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:08,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:08,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:08,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936702575] [2021-10-15 20:24:08,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936702575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:08,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72409369] [2021-10-15 20:24:08,790 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-15 20:24:08,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:08,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:08,795 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:08,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-15 20:24:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:09,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-15 20:24:09,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:09,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72409369] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:09,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:09,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-15 20:24:09,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437526132] [2021-10-15 20:24:09,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-15 20:24:09,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:09,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-15 20:24:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-15 20:24:09,894 INFO L87 Difference]: Start difference. First operand 188 states and 209 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:10,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:10,120 INFO L93 Difference]: Finished difference Result 314 states and 353 transitions. [2021-10-15 20:24:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-15 20:24:10,122 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-10-15 20:24:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:10,123 INFO L225 Difference]: With dead ends: 314 [2021-10-15 20:24:10,123 INFO L226 Difference]: Without dead ends: 190 [2021-10-15 20:24:10,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 178.8ms TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-15 20:24:10,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-15 20:24:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2021-10-15 20:24:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 181 states have (on average 1.149171270718232) internal successors, (208), 187 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 208 transitions. [2021-10-15 20:24:10,138 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 208 transitions. Word has length 88 [2021-10-15 20:24:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:10,139 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 208 transitions. [2021-10-15 20:24:10,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 208 transitions. [2021-10-15 20:24:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-15 20:24:10,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:10,140 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:10,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:10,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-15 20:24:10,367 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:10,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:10,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1033002149, now seen corresponding path program 7 times [2021-10-15 20:24:10,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:10,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919711084] [2021-10-15 20:24:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:10,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:10,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:10,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919711084] [2021-10-15 20:24:10,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919711084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:10,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003057514] [2021-10-15 20:24:10,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-15 20:24:10,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:10,497 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:10,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-15 20:24:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:11,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-15 20:24:11,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:11,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003057514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:11,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:11,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-15 20:24:11,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769036761] [2021-10-15 20:24:11,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-15 20:24:11,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-15 20:24:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-15 20:24:11,496 INFO L87 Difference]: Start difference. First operand 188 states and 208 transitions. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:11,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:11,591 INFO L93 Difference]: Finished difference Result 341 states and 380 transitions. [2021-10-15 20:24:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-15 20:24:11,602 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-10-15 20:24:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:11,604 INFO L225 Difference]: With dead ends: 341 [2021-10-15 20:24:11,604 INFO L226 Difference]: Without dead ends: 220 [2021-10-15 20:24:11,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 75.6ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-15 20:24:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-15 20:24:11,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 193. [2021-10-15 20:24:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 1.1505376344086022) internal successors, (214), 192 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 214 transitions. [2021-10-15 20:24:11,616 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 214 transitions. Word has length 92 [2021-10-15 20:24:11,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:11,616 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 214 transitions. [2021-10-15 20:24:11,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 214 transitions. [2021-10-15 20:24:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-15 20:24:11,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:11,618 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:11,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:11,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-15 20:24:11,836 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:11,836 INFO L82 PathProgramCache]: Analyzing trace with hash -846008519, now seen corresponding path program 8 times [2021-10-15 20:24:11,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:11,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411498510] [2021-10-15 20:24:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:11,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:12,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:12,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411498510] [2021-10-15 20:24:12,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411498510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:12,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531102234] [2021-10-15 20:24:12,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:24:12,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:12,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:12,015 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:12,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-15 20:24:12,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 20:24:12,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:12,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-15 20:24:12,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:13,380 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:13,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531102234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:13,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:13,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-15 20:24:13,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481603] [2021-10-15 20:24:13,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-15 20:24:13,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:13,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-15 20:24:13,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-15 20:24:13,383 INFO L87 Difference]: Start difference. First operand 193 states and 214 transitions. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:13,634 INFO L93 Difference]: Finished difference Result 319 states and 358 transitions. [2021-10-15 20:24:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-15 20:24:13,634 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-10-15 20:24:13,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:13,636 INFO L225 Difference]: With dead ends: 319 [2021-10-15 20:24:13,636 INFO L226 Difference]: Without dead ends: 195 [2021-10-15 20:24:13,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 199.4ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-15 20:24:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-15 20:24:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2021-10-15 20:24:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 1.1451612903225807) internal successors, (213), 192 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2021-10-15 20:24:13,648 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 93 [2021-10-15 20:24:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:13,648 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2021-10-15 20:24:13,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2021-10-15 20:24:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-15 20:24:13,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:13,649 INFO L512 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:13,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:13,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:13,856 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:13,856 INFO L82 PathProgramCache]: Analyzing trace with hash -531485040, now seen corresponding path program 8 times [2021-10-15 20:24:13,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:13,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647139186] [2021-10-15 20:24:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:13,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:13,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:13,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647139186] [2021-10-15 20:24:13,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647139186] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:13,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144853699] [2021-10-15 20:24:13,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:24:13,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:13,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:13,993 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:14,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-15 20:24:14,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 20:24:14,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:14,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-15 20:24:14,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:15,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144853699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:15,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:15,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-15 20:24:15,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912801908] [2021-10-15 20:24:15,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-15 20:24:15,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:15,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-15 20:24:15,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-15 20:24:15,065 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:15,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:15,185 INFO L93 Difference]: Finished difference Result 346 states and 385 transitions. [2021-10-15 20:24:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-15 20:24:15,186 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-10-15 20:24:15,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:15,187 INFO L225 Difference]: With dead ends: 346 [2021-10-15 20:24:15,187 INFO L226 Difference]: Without dead ends: 225 [2021-10-15 20:24:15,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-15 20:24:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-15 20:24:15,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 198. [2021-10-15 20:24:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 1.1465968586387434) internal successors, (219), 197 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:15,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 219 transitions. [2021-10-15 20:24:15,208 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 219 transitions. Word has length 97 [2021-10-15 20:24:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:15,209 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 219 transitions. [2021-10-15 20:24:15,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:15,209 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 219 transitions. [2021-10-15 20:24:15,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-15 20:24:15,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:15,211 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:15,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:15,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-15 20:24:15,417 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:15,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2100471122, now seen corresponding path program 9 times [2021-10-15 20:24:15,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:15,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570593283] [2021-10-15 20:24:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:15,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:15,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:15,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570593283] [2021-10-15 20:24:15,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570593283] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:15,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045891566] [2021-10-15 20:24:15,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 20:24:15,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:15,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:15,629 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:15,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-15 20:24:17,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-15 20:24:17,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:17,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-15 20:24:17,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:17,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045891566] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:17,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:17,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-15 20:24:17,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045266139] [2021-10-15 20:24:17,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-15 20:24:17,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:17,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-15 20:24:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-15 20:24:17,661 INFO L87 Difference]: Start difference. First operand 198 states and 219 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:17,928 INFO L93 Difference]: Finished difference Result 324 states and 363 transitions. [2021-10-15 20:24:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-15 20:24:17,929 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-10-15 20:24:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:17,930 INFO L225 Difference]: With dead ends: 324 [2021-10-15 20:24:17,930 INFO L226 Difference]: Without dead ends: 200 [2021-10-15 20:24:17,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 87 SyntacticMatches, 11 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 241.4ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-15 20:24:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-15 20:24:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2021-10-15 20:24:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 1.1413612565445026) internal successors, (218), 197 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 218 transitions. [2021-10-15 20:24:17,942 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 218 transitions. Word has length 98 [2021-10-15 20:24:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:17,942 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 218 transitions. [2021-10-15 20:24:17,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 218 transitions. [2021-10-15 20:24:17,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-15 20:24:17,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:17,943 INFO L512 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:17,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:18,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-10-15 20:24:18,151 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:18,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1389352837, now seen corresponding path program 9 times [2021-10-15 20:24:18,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:18,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401707040] [2021-10-15 20:24:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:18,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:18,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:18,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401707040] [2021-10-15 20:24:18,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401707040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:18,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499534985] [2021-10-15 20:24:18,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 20:24:18,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:18,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:18,306 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:18,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-15 20:24:19,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-10-15 20:24:19,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:19,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-15 20:24:19,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:19,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499534985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:19,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:19,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-15 20:24:19,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016609148] [2021-10-15 20:24:19,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-15 20:24:19,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:19,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-15 20:24:19,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-15 20:24:19,535 INFO L87 Difference]: Start difference. First operand 198 states and 218 transitions. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:19,652 INFO L93 Difference]: Finished difference Result 351 states and 390 transitions. [2021-10-15 20:24:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-15 20:24:19,653 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-15 20:24:19,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:19,654 INFO L225 Difference]: With dead ends: 351 [2021-10-15 20:24:19,654 INFO L226 Difference]: Without dead ends: 230 [2021-10-15 20:24:19,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 102.2ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-15 20:24:19,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-15 20:24:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 203. [2021-10-15 20:24:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 196 states have (on average 1.1428571428571428) internal successors, (224), 202 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 224 transitions. [2021-10-15 20:24:19,665 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 224 transitions. Word has length 102 [2021-10-15 20:24:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:19,665 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 224 transitions. [2021-10-15 20:24:19,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 224 transitions. [2021-10-15 20:24:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-15 20:24:19,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:19,667 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:19,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:19,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:19,874 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:19,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:19,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1610928217, now seen corresponding path program 10 times [2021-10-15 20:24:19,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:19,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232281393] [2021-10-15 20:24:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:19,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:20,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:20,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232281393] [2021-10-15 20:24:20,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232281393] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:20,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62539468] [2021-10-15 20:24:20,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-15 20:24:20,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:20,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:20,099 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:20,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-15 20:24:20,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-15 20:24:20,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:20,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-15 20:24:20,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:21,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62539468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:21,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:21,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-15 20:24:21,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413164282] [2021-10-15 20:24:21,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-15 20:24:21,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-15 20:24:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-15 20:24:21,652 INFO L87 Difference]: Start difference. First operand 203 states and 224 transitions. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:22,008 INFO L93 Difference]: Finished difference Result 329 states and 368 transitions. [2021-10-15 20:24:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-15 20:24:22,010 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-15 20:24:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:22,011 INFO L225 Difference]: With dead ends: 329 [2021-10-15 20:24:22,011 INFO L226 Difference]: Without dead ends: 205 [2021-10-15 20:24:22,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 12 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 267.5ms TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-15 20:24:22,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-15 20:24:22,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2021-10-15 20:24:22,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 196 states have (on average 1.1377551020408163) internal successors, (223), 202 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 223 transitions. [2021-10-15 20:24:22,023 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 223 transitions. Word has length 103 [2021-10-15 20:24:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:22,023 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 223 transitions. [2021-10-15 20:24:22,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:22,023 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 223 transitions. [2021-10-15 20:24:22,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-15 20:24:22,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:22,024 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:22,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-15 20:24:22,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:22,239 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash 917405616, now seen corresponding path program 10 times [2021-10-15 20:24:22,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:22,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820423927] [2021-10-15 20:24:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:22,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:22,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:22,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820423927] [2021-10-15 20:24:22,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820423927] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:22,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043299763] [2021-10-15 20:24:22,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-15 20:24:22,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:22,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:22,419 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:22,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-15 20:24:23,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-15 20:24:23,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:23,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-15 20:24:23,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:23,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043299763] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:23,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:23,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-15 20:24:23,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535149036] [2021-10-15 20:24:23,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-15 20:24:23,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:23,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-15 20:24:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-15 20:24:23,492 INFO L87 Difference]: Start difference. First operand 203 states and 223 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:23,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:23,583 INFO L93 Difference]: Finished difference Result 356 states and 395 transitions. [2021-10-15 20:24:23,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-15 20:24:23,583 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-10-15 20:24:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:23,585 INFO L225 Difference]: With dead ends: 356 [2021-10-15 20:24:23,585 INFO L226 Difference]: Without dead ends: 235 [2021-10-15 20:24:23,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-15 20:24:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-10-15 20:24:23,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 208. [2021-10-15 20:24:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 201 states have (on average 1.1393034825870647) internal successors, (229), 207 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 229 transitions. [2021-10-15 20:24:23,595 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 229 transitions. Word has length 107 [2021-10-15 20:24:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:23,595 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 229 transitions. [2021-10-15 20:24:23,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 229 transitions. [2021-10-15 20:24:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-15 20:24:23,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:23,596 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:23,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-15 20:24:23,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:23,807 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:23,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:23,807 INFO L82 PathProgramCache]: Analyzing trace with hash -134533746, now seen corresponding path program 11 times [2021-10-15 20:24:23,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:23,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028081271] [2021-10-15 20:24:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:23,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:24,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:24,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028081271] [2021-10-15 20:24:24,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028081271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:24,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676574920] [2021-10-15 20:24:24,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-15 20:24:24,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:24,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:24,079 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:24,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-15 20:24:25,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-10-15 20:24:25,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:25,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-15 20:24:25,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:25,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676574920] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:25,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:25,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-15 20:24:25,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316864401] [2021-10-15 20:24:25,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-15 20:24:25,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:25,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-15 20:24:25,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-10-15 20:24:25,712 INFO L87 Difference]: Start difference. First operand 208 states and 229 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:26,008 INFO L93 Difference]: Finished difference Result 334 states and 373 transitions. [2021-10-15 20:24:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-15 20:24:26,009 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-10-15 20:24:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:26,010 INFO L225 Difference]: With dead ends: 334 [2021-10-15 20:24:26,010 INFO L226 Difference]: Without dead ends: 210 [2021-10-15 20:24:26,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 95 SyntacticMatches, 13 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 299.2ms TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-10-15 20:24:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-15 20:24:26,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2021-10-15 20:24:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 201 states have (on average 1.1343283582089552) internal successors, (228), 207 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) [2021-10-15 20:24:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 228 transitions. [2021-10-15 20:24:26,022 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 228 transitions. Word has length 108 [2021-10-15 20:24:26,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:26,022 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 228 transitions. [2021-10-15 20:24:26,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 228 transitions. [2021-10-15 20:24:26,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-15 20:24:26,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:26,024 INFO L512 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:26,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:26,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:26,247 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:26,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:26,247 INFO L82 PathProgramCache]: Analyzing trace with hash 85539429, now seen corresponding path program 11 times [2021-10-15 20:24:26,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:26,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997281902] [2021-10-15 20:24:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:26,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:26,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:26,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997281902] [2021-10-15 20:24:26,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997281902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:26,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176490476] [2021-10-15 20:24:26,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-15 20:24:26,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:26,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:26,435 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:26,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-15 20:24:27,359 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-15 20:24:27,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:27,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-15 20:24:27,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:27,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176490476] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:27,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:27,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-15 20:24:27,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705735328] [2021-10-15 20:24:27,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-15 20:24:27,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:27,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-15 20:24:27,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-15 20:24:27,659 INFO L87 Difference]: Start difference. First operand 208 states and 228 transitions. Second operand has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:27,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:27,789 INFO L93 Difference]: Finished difference Result 361 states and 400 transitions. [2021-10-15 20:24:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-15 20:24:27,790 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-15 20:24:27,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:27,791 INFO L225 Difference]: With dead ends: 361 [2021-10-15 20:24:27,791 INFO L226 Difference]: Without dead ends: 240 [2021-10-15 20:24:27,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-15 20:24:27,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-15 20:24:27,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 213. [2021-10-15 20:24:27,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 206 states have (on average 1.1359223300970873) internal successors, (234), 212 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:27,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2021-10-15 20:24:27,803 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 112 [2021-10-15 20:24:27,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:27,804 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2021-10-15 20:24:27,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:27,804 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2021-10-15 20:24:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-15 20:24:27,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:27,805 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:27,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:28,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-15 20:24:28,019 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:28,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:28,019 INFO L82 PathProgramCache]: Analyzing trace with hash -152581767, now seen corresponding path program 12 times [2021-10-15 20:24:28,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:28,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978312526] [2021-10-15 20:24:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:28,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:28,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:28,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978312526] [2021-10-15 20:24:28,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978312526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:28,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514781201] [2021-10-15 20:24:28,276 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-15 20:24:28,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:28,279 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:28,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-15 20:24:30,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-10-15 20:24:30,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:30,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-15 20:24:30,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:30,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514781201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:30,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:30,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-15 20:24:30,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676002687] [2021-10-15 20:24:30,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-15 20:24:30,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-15 20:24:30,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-10-15 20:24:30,937 INFO L87 Difference]: Start difference. First operand 213 states and 234 transitions. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:31,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:31,290 INFO L93 Difference]: Finished difference Result 339 states and 378 transitions. [2021-10-15 20:24:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-15 20:24:31,290 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-10-15 20:24:31,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:31,293 INFO L225 Difference]: With dead ends: 339 [2021-10-15 20:24:31,293 INFO L226 Difference]: Without dead ends: 215 [2021-10-15 20:24:31,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 99 SyntacticMatches, 14 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 354.5ms TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-10-15 20:24:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-15 20:24:31,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2021-10-15 20:24:31,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 206 states have (on average 1.1310679611650485) internal successors, (233), 212 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:31,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 233 transitions. [2021-10-15 20:24:31,303 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 233 transitions. Word has length 113 [2021-10-15 20:24:31,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:31,304 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 233 transitions. [2021-10-15 20:24:31,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 233 transitions. [2021-10-15 20:24:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-15 20:24:31,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:31,306 INFO L512 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:31,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:31,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-15 20:24:31,514 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1127213264, now seen corresponding path program 12 times [2021-10-15 20:24:31,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:31,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461886195] [2021-10-15 20:24:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:31,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:31,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:31,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461886195] [2021-10-15 20:24:31,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461886195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:31,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974680725] [2021-10-15 20:24:31,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-15 20:24:31,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:31,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:31,719 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:31,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-15 20:24:33,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-10-15 20:24:33,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:33,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-15 20:24:33,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:33,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974680725] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:33,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:33,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-15 20:24:33,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875374880] [2021-10-15 20:24:33,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-15 20:24:33,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:33,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-15 20:24:33,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-15 20:24:33,743 INFO L87 Difference]: Start difference. First operand 213 states and 233 transitions. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:33,834 INFO L93 Difference]: Finished difference Result 366 states and 405 transitions. [2021-10-15 20:24:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-15 20:24:33,855 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-10-15 20:24:33,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:33,857 INFO L225 Difference]: With dead ends: 366 [2021-10-15 20:24:33,857 INFO L226 Difference]: Without dead ends: 245 [2021-10-15 20:24:33,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 138.2ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-15 20:24:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-15 20:24:33,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 218. [2021-10-15 20:24:33,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 211 states have (on average 1.132701421800948) internal successors, (239), 217 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 239 transitions. [2021-10-15 20:24:33,872 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 239 transitions. Word has length 117 [2021-10-15 20:24:33,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:33,872 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 239 transitions. [2021-10-15 20:24:33,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 239 transitions. [2021-10-15 20:24:33,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-15 20:24:33,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:33,874 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:33,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:34,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-15 20:24:34,082 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:34,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:34,083 INFO L82 PathProgramCache]: Analyzing trace with hash 2074536046, now seen corresponding path program 13 times [2021-10-15 20:24:34,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:34,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642839463] [2021-10-15 20:24:34,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:34,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:34,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:34,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642839463] [2021-10-15 20:24:34,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642839463] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:34,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842058337] [2021-10-15 20:24:34,396 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-15 20:24:34,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:34,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:34,399 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:34,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-15 20:24:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:35,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-15 20:24:35,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:36,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842058337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:36,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:36,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-15 20:24:36,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9210472] [2021-10-15 20:24:36,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-15 20:24:36,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:36,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-15 20:24:36,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-10-15 20:24:36,670 INFO L87 Difference]: Start difference. First operand 218 states and 239 transitions. Second operand has 20 states, 20 states have (on average 6.0) internal successors, (120), 20 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:37,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:37,142 INFO L93 Difference]: Finished difference Result 344 states and 383 transitions. [2021-10-15 20:24:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-15 20:24:37,145 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.0) internal successors, (120), 20 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-10-15 20:24:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:37,146 INFO L225 Difference]: With dead ends: 344 [2021-10-15 20:24:37,146 INFO L226 Difference]: Without dead ends: 220 [2021-10-15 20:24:37,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 103 SyntacticMatches, 15 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 367.4ms TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-10-15 20:24:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-15 20:24:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-10-15 20:24:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 211 states have (on average 1.127962085308057) internal successors, (238), 217 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 238 transitions. [2021-10-15 20:24:37,159 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 238 transitions. Word has length 118 [2021-10-15 20:24:37,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:37,159 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 238 transitions. [2021-10-15 20:24:37,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.0) internal successors, (120), 20 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 238 transitions. [2021-10-15 20:24:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-15 20:24:37,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:37,161 INFO L512 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:37,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:37,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:37,379 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:37,379 INFO L82 PathProgramCache]: Analyzing trace with hash 78415173, now seen corresponding path program 13 times [2021-10-15 20:24:37,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:37,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840658318] [2021-10-15 20:24:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:37,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:37,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:37,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840658318] [2021-10-15 20:24:37,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840658318] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:37,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76597021] [2021-10-15 20:24:37,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-15 20:24:37,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:37,637 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:37,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-15 20:24:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:38,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-15 20:24:38,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:39,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76597021] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:39,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:39,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-15 20:24:39,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034147744] [2021-10-15 20:24:39,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-15 20:24:39,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:39,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-15 20:24:39,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-15 20:24:39,036 INFO L87 Difference]: Start difference. First operand 218 states and 238 transitions. Second operand has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:39,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:39,162 INFO L93 Difference]: Finished difference Result 371 states and 410 transitions. [2021-10-15 20:24:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-15 20:24:39,162 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-15 20:24:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:39,166 INFO L225 Difference]: With dead ends: 371 [2021-10-15 20:24:39,167 INFO L226 Difference]: Without dead ends: 250 [2021-10-15 20:24:39,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 149.9ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-15 20:24:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-15 20:24:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 223. [2021-10-15 20:24:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 216 states have (on average 1.1296296296296295) internal successors, (244), 222 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 244 transitions. [2021-10-15 20:24:39,179 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 244 transitions. Word has length 122 [2021-10-15 20:24:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:39,179 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 244 transitions. [2021-10-15 20:24:39,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 244 transitions. [2021-10-15 20:24:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-15 20:24:39,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:39,180 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:39,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-15 20:24:39,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-10-15 20:24:39,395 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:39,395 INFO L82 PathProgramCache]: Analyzing trace with hash -373433703, now seen corresponding path program 14 times [2021-10-15 20:24:39,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:39,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284852100] [2021-10-15 20:24:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:39,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:39,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:39,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284852100] [2021-10-15 20:24:39,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284852100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:39,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340382661] [2021-10-15 20:24:39,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:24:39,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:39,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:39,715 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:39,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-15 20:24:41,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 20:24:41,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:41,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-15 20:24:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:41,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340382661] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:41,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:41,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-15 20:24:41,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672240988] [2021-10-15 20:24:41,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-15 20:24:41,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-15 20:24:41,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-15 20:24:41,879 INFO L87 Difference]: Start difference. First operand 223 states and 244 transitions. Second operand has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:42,376 INFO L93 Difference]: Finished difference Result 349 states and 388 transitions. [2021-10-15 20:24:42,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-15 20:24:42,383 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-10-15 20:24:42,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:42,385 INFO L225 Difference]: With dead ends: 349 [2021-10-15 20:24:42,385 INFO L226 Difference]: Without dead ends: 225 [2021-10-15 20:24:42,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 107 SyntacticMatches, 16 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 444.2ms TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-15 20:24:42,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-15 20:24:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2021-10-15 20:24:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 216 states have (on average 1.125) internal successors, (243), 222 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 243 transitions. [2021-10-15 20:24:42,400 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 243 transitions. Word has length 123 [2021-10-15 20:24:42,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:42,401 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 243 transitions. [2021-10-15 20:24:42,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 243 transitions. [2021-10-15 20:24:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-15 20:24:42,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:42,402 INFO L512 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:42,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-15 20:24:42,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:42,611 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:42,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:42,611 INFO L82 PathProgramCache]: Analyzing trace with hash -866620944, now seen corresponding path program 14 times [2021-10-15 20:24:42,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:42,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190424202] [2021-10-15 20:24:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:42,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:42,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:42,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190424202] [2021-10-15 20:24:42,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190424202] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:42,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889080825] [2021-10-15 20:24:42,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:24:42,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:42,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:42,875 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:42,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-15 20:24:44,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 20:24:44,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:44,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-15 20:24:44,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:44,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889080825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:44,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:44,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-15 20:24:44,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287988697] [2021-10-15 20:24:44,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-15 20:24:44,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:44,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-15 20:24:44,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-15 20:24:44,415 INFO L87 Difference]: Start difference. First operand 223 states and 243 transitions. Second operand has 22 states, 22 states have (on average 6.090909090909091) internal successors, (134), 22 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:44,547 INFO L93 Difference]: Finished difference Result 376 states and 415 transitions. [2021-10-15 20:24:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-15 20:24:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.090909090909091) internal successors, (134), 22 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-10-15 20:24:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:44,550 INFO L225 Difference]: With dead ends: 376 [2021-10-15 20:24:44,550 INFO L226 Difference]: Without dead ends: 255 [2021-10-15 20:24:44,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-15 20:24:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-15 20:24:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 228. [2021-10-15 20:24:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 1.1266968325791855) internal successors, (249), 227 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 249 transitions. [2021-10-15 20:24:44,561 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 249 transitions. Word has length 127 [2021-10-15 20:24:44,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:44,561 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 249 transitions. [2021-10-15 20:24:44,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.090909090909091) internal successors, (134), 22 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 249 transitions. [2021-10-15 20:24:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-15 20:24:44,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:44,563 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:44,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:44,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:44,771 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:44,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:44,772 INFO L82 PathProgramCache]: Analyzing trace with hash 395217742, now seen corresponding path program 15 times [2021-10-15 20:24:44,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:44,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665978054] [2021-10-15 20:24:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:44,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:45,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:45,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665978054] [2021-10-15 20:24:45,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665978054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:45,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654985659] [2021-10-15 20:24:45,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 20:24:45,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:45,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:45,145 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:45,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-15 20:24:46,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-15 20:24:46,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:46,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-15 20:24:46,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:47,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654985659] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:47,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:47,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-15 20:24:47,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690623039] [2021-10-15 20:24:47,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-15 20:24:47,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:47,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-15 20:24:47,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-10-15 20:24:47,566 INFO L87 Difference]: Start difference. First operand 228 states and 249 transitions. Second operand has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:48,075 INFO L93 Difference]: Finished difference Result 354 states and 393 transitions. [2021-10-15 20:24:48,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-15 20:24:48,075 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-10-15 20:24:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:48,077 INFO L225 Difference]: With dead ends: 354 [2021-10-15 20:24:48,077 INFO L226 Difference]: Without dead ends: 230 [2021-10-15 20:24:48,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 111 SyntacticMatches, 17 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 497.0ms TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-10-15 20:24:48,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-15 20:24:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2021-10-15 20:24:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 1.1221719457013575) internal successors, (248), 227 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 248 transitions. [2021-10-15 20:24:48,100 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 248 transitions. Word has length 128 [2021-10-15 20:24:48,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:48,100 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 248 transitions. [2021-10-15 20:24:48,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:48,100 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 248 transitions. [2021-10-15 20:24:48,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-15 20:24:48,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:48,102 INFO L512 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:48,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:48,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-15 20:24:48,311 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:48,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1279768613, now seen corresponding path program 15 times [2021-10-15 20:24:48,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:48,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881545579] [2021-10-15 20:24:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:48,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:48,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:48,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881545579] [2021-10-15 20:24:48,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881545579] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:48,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750371549] [2021-10-15 20:24:48,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 20:24:48,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:48,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:48,631 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:48,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-15 20:24:50,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2021-10-15 20:24:50,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:50,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-15 20:24:50,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:50,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750371549] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:50,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:50,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-15 20:24:50,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039556834] [2021-10-15 20:24:50,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-15 20:24:50,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:50,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-15 20:24:50,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-15 20:24:50,478 INFO L87 Difference]: Start difference. First operand 228 states and 248 transitions. Second operand has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:50,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:50,646 INFO L93 Difference]: Finished difference Result 381 states and 420 transitions. [2021-10-15 20:24:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-15 20:24:50,646 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-10-15 20:24:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:50,647 INFO L225 Difference]: With dead ends: 381 [2021-10-15 20:24:50,647 INFO L226 Difference]: Without dead ends: 260 [2021-10-15 20:24:50,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 198.4ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-15 20:24:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-15 20:24:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 233. [2021-10-15 20:24:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 226 states have (on average 1.1238938053097345) internal successors, (254), 232 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 254 transitions. [2021-10-15 20:24:50,660 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 254 transitions. Word has length 132 [2021-10-15 20:24:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:50,660 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 254 transitions. [2021-10-15 20:24:50,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 254 transitions. [2021-10-15 20:24:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-15 20:24:50,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:50,662 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:50,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-15 20:24:50,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-15 20:24:50,871 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:50,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:50,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1786182727, now seen corresponding path program 16 times [2021-10-15 20:24:50,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:50,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032861962] [2021-10-15 20:24:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:50,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:51,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:51,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032861962] [2021-10-15 20:24:51,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032861962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:51,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819600571] [2021-10-15 20:24:51,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-15 20:24:51,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:51,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:51,221 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:51,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-15 20:24:52,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-15 20:24:52,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:52,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-15 20:24:52,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:53,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819600571] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:53,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:53,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-15 20:24:53,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890569123] [2021-10-15 20:24:53,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-15 20:24:53,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:53,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-15 20:24:53,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-10-15 20:24:53,597 INFO L87 Difference]: Start difference. First operand 233 states and 254 transitions. Second operand has 23 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:54,272 INFO L93 Difference]: Finished difference Result 359 states and 398 transitions. [2021-10-15 20:24:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-15 20:24:54,273 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-10-15 20:24:54,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:54,274 INFO L225 Difference]: With dead ends: 359 [2021-10-15 20:24:54,275 INFO L226 Difference]: Without dead ends: 235 [2021-10-15 20:24:54,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 18 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 542.7ms TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-10-15 20:24:54,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-10-15 20:24:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2021-10-15 20:24:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 226 states have (on average 1.1194690265486726) internal successors, (253), 232 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 253 transitions. [2021-10-15 20:24:54,287 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 253 transitions. Word has length 133 [2021-10-15 20:24:54,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:54,288 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 253 transitions. [2021-10-15 20:24:54,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 253 transitions. [2021-10-15 20:24:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-15 20:24:54,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:54,289 INFO L512 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:54,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-15 20:24:54,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-15 20:24:54,503 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:54,503 INFO L82 PathProgramCache]: Analyzing trace with hash -567672048, now seen corresponding path program 16 times [2021-10-15 20:24:54,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:54,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310221072] [2021-10-15 20:24:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:54,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:54,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:54,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310221072] [2021-10-15 20:24:54,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310221072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:54,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241133553] [2021-10-15 20:24:54,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-15 20:24:54,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:54,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:54,795 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:54,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-15 20:24:56,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-15 20:24:56,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:56,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-15 20:24:56,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:56,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241133553] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:56,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:56,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-15 20:24:56,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394167728] [2021-10-15 20:24:56,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-15 20:24:56,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-15 20:24:56,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-15 20:24:56,518 INFO L87 Difference]: Start difference. First operand 233 states and 253 transitions. Second operand has 24 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:24:56,676 INFO L93 Difference]: Finished difference Result 386 states and 425 transitions. [2021-10-15 20:24:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-15 20:24:56,677 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-10-15 20:24:56,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:24:56,678 INFO L225 Difference]: With dead ends: 386 [2021-10-15 20:24:56,678 INFO L226 Difference]: Without dead ends: 265 [2021-10-15 20:24:56,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 206.9ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-15 20:24:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-15 20:24:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 238. [2021-10-15 20:24:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 231 states have (on average 1.121212121212121) internal successors, (259), 237 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 259 transitions. [2021-10-15 20:24:56,687 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 259 transitions. Word has length 137 [2021-10-15 20:24:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:24:56,687 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 259 transitions. [2021-10-15 20:24:56,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:24:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 259 transitions. [2021-10-15 20:24:56,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-15 20:24:56,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:24:56,688 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:24:56,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-15 20:24:56,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-15 20:24:56,888 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:24:56,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:24:56,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1072698926, now seen corresponding path program 17 times [2021-10-15 20:24:56,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:24:56,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112368906] [2021-10-15 20:24:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:24:56,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:24:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:24:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:57,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:24:57,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112368906] [2021-10-15 20:24:57,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112368906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:57,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098212240] [2021-10-15 20:24:57,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-15 20:24:57,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:24:57,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:24:57,305 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:24:57,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-15 20:24:58,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2021-10-15 20:24:58,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:24:58,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-15 20:24:58,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:24:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:24:59,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098212240] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:24:59,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:24:59,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-15 20:24:59,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831838096] [2021-10-15 20:24:59,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-15 20:24:59,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:24:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-15 20:24:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-10-15 20:24:59,810 INFO L87 Difference]: Start difference. First operand 238 states and 259 transitions. Second operand has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 24 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:00,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:25:00,384 INFO L93 Difference]: Finished difference Result 364 states and 403 transitions. [2021-10-15 20:25:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-15 20:25:00,385 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 24 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-10-15 20:25:00,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:25:00,386 INFO L225 Difference]: With dead ends: 364 [2021-10-15 20:25:00,387 INFO L226 Difference]: Without dead ends: 240 [2021-10-15 20:25:00,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 119 SyntacticMatches, 19 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 650.3ms TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-10-15 20:25:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-15 20:25:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2021-10-15 20:25:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 231 states have (on average 1.1168831168831168) internal successors, (258), 237 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 258 transitions. [2021-10-15 20:25:00,398 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 258 transitions. Word has length 138 [2021-10-15 20:25:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:25:00,399 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 258 transitions. [2021-10-15 20:25:00,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 24 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 258 transitions. [2021-10-15 20:25:00,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-15 20:25:00,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:25:00,401 INFO L512 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:25:00,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-15 20:25:00,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-15 20:25:00,623 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:25:00,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:25:00,623 INFO L82 PathProgramCache]: Analyzing trace with hash 19452677, now seen corresponding path program 17 times [2021-10-15 20:25:00,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:25:00,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503894279] [2021-10-15 20:25:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:25:00,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:25:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:25:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:00,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:25:00,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503894279] [2021-10-15 20:25:00,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503894279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:00,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655120520] [2021-10-15 20:25:00,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-15 20:25:00,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:25:00,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:25:00,939 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:25:00,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-15 20:25:02,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-10-15 20:25:02,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:25:02,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-15 20:25:02,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:25:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:02,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655120520] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:02,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:25:02,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-15 20:25:02,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830640810] [2021-10-15 20:25:02,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-15 20:25:02,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:25:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-15 20:25:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-15 20:25:02,741 INFO L87 Difference]: Start difference. First operand 238 states and 258 transitions. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:02,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:25:02,925 INFO L93 Difference]: Finished difference Result 391 states and 430 transitions. [2021-10-15 20:25:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-15 20:25:02,930 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-10-15 20:25:02,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:25:02,931 INFO L225 Difference]: With dead ends: 391 [2021-10-15 20:25:02,931 INFO L226 Difference]: Without dead ends: 270 [2021-10-15 20:25:02,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 213.3ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-15 20:25:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-15 20:25:02,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 243. [2021-10-15 20:25:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 236 states have (on average 1.11864406779661) internal successors, (264), 242 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 264 transitions. [2021-10-15 20:25:02,945 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 264 transitions. Word has length 142 [2021-10-15 20:25:02,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:25:02,945 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 264 transitions. [2021-10-15 20:25:02,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 264 transitions. [2021-10-15 20:25:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-10-15 20:25:02,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:25:02,947 INFO L512 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:25:02,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-15 20:25:03,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:25:03,173 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:25:03,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:25:03,174 INFO L82 PathProgramCache]: Analyzing trace with hash 2093696217, now seen corresponding path program 18 times [2021-10-15 20:25:03,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:25:03,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685603752] [2021-10-15 20:25:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:25:03,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:25:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:25:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 0 proven. 1050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:03,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:25:03,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685603752] [2021-10-15 20:25:03,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685603752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:03,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437970355] [2021-10-15 20:25:03,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-15 20:25:03,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:25:03,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:25:03,611 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:25:03,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-15 20:25:30,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-10-15 20:25:30,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:25:30,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-15 20:25:30,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:25:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 0 proven. 1050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:31,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437970355] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:31,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:25:31,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-15 20:25:31,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319143304] [2021-10-15 20:25:31,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-15 20:25:31,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:25:31,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-15 20:25:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-10-15 20:25:31,210 INFO L87 Difference]: Start difference. First operand 243 states and 264 transitions. Second operand has 25 states, 25 states have (on average 5.8) internal successors, (145), 25 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:31,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:25:31,858 INFO L93 Difference]: Finished difference Result 369 states and 408 transitions. [2021-10-15 20:25:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-15 20:25:31,858 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.8) internal successors, (145), 25 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-10-15 20:25:31,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:25:31,860 INFO L225 Difference]: With dead ends: 369 [2021-10-15 20:25:31,860 INFO L226 Difference]: Without dead ends: 245 [2021-10-15 20:25:31,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 123 SyntacticMatches, 20 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 751.8ms TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-10-15 20:25:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-15 20:25:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2021-10-15 20:25:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 236 states have (on average 1.1144067796610169) internal successors, (263), 242 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 263 transitions. [2021-10-15 20:25:31,869 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 263 transitions. Word has length 143 [2021-10-15 20:25:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:25:31,869 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 263 transitions. [2021-10-15 20:25:31,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.8) internal successors, (145), 25 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:31,869 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 263 transitions. [2021-10-15 20:25:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-15 20:25:31,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:25:31,870 INFO L512 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:25:31,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-15 20:25:32,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-10-15 20:25:32,075 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:25:32,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:25:32,075 INFO L82 PathProgramCache]: Analyzing trace with hash -366562256, now seen corresponding path program 18 times [2021-10-15 20:25:32,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:25:32,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339680119] [2021-10-15 20:25:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:25:32,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:25:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:25:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:32,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:25:32,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339680119] [2021-10-15 20:25:32,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339680119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:32,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373072674] [2021-10-15 20:25:32,365 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-15 20:25:32,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:25:32,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:25:32,370 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:25:32,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-15 20:25:34,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-10-15 20:25:34,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:25:34,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-15 20:25:34,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:25:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:34,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373072674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:34,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:25:34,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-15 20:25:34,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337342137] [2021-10-15 20:25:34,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-15 20:25:34,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:25:34,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-15 20:25:34,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-15 20:25:34,815 INFO L87 Difference]: Start difference. First operand 243 states and 263 transitions. Second operand has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:34,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:25:34,951 INFO L93 Difference]: Finished difference Result 396 states and 435 transitions. [2021-10-15 20:25:34,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-15 20:25:34,952 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-10-15 20:25:34,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:25:34,954 INFO L225 Difference]: With dead ends: 396 [2021-10-15 20:25:34,954 INFO L226 Difference]: Without dead ends: 275 [2021-10-15 20:25:34,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 212.8ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-15 20:25:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-15 20:25:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 248. [2021-10-15 20:25:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 241 states have (on average 1.116182572614108) internal successors, (269), 247 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) [2021-10-15 20:25:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 269 transitions. [2021-10-15 20:25:34,967 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 269 transitions. Word has length 147 [2021-10-15 20:25:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:25:34,967 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 269 transitions. [2021-10-15 20:25:34,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 269 transitions. [2021-10-15 20:25:34,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-15 20:25:34,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:25:34,969 INFO L512 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:25:34,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-15 20:25:35,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:25:35,180 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:25:35,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:25:35,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1282832114, now seen corresponding path program 19 times [2021-10-15 20:25:35,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:25:35,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666611507] [2021-10-15 20:25:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:25:35,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:25:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:25:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:35,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:25:35,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666611507] [2021-10-15 20:25:35,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666611507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:35,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252290073] [2021-10-15 20:25:35,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-15 20:25:35,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:25:35,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:25:35,651 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:25:35,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-15 20:25:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:25:37,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-15 20:25:37,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:25:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:38,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252290073] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:38,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:25:38,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-15 20:25:38,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646944282] [2021-10-15 20:25:38,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-15 20:25:38,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:25:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-15 20:25:38,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2021-10-15 20:25:38,536 INFO L87 Difference]: Start difference. First operand 248 states and 269 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:25:39,028 INFO L93 Difference]: Finished difference Result 374 states and 413 transitions. [2021-10-15 20:25:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-15 20:25:39,028 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-10-15 20:25:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:25:39,030 INFO L225 Difference]: With dead ends: 374 [2021-10-15 20:25:39,030 INFO L226 Difference]: Without dead ends: 250 [2021-10-15 20:25:39,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 127 SyntacticMatches, 21 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 813.6ms TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2021-10-15 20:25:39,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-15 20:25:39,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2021-10-15 20:25:39,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 241 states have (on average 1.112033195020747) internal successors, (268), 247 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 268 transitions. [2021-10-15 20:25:39,043 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 268 transitions. Word has length 148 [2021-10-15 20:25:39,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:25:39,044 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 268 transitions. [2021-10-15 20:25:39,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 268 transitions. [2021-10-15 20:25:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-10-15 20:25:39,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:25:39,045 INFO L512 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:25:39,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-15 20:25:39,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:25:39,245 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:25:39,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:25:39,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1393415653, now seen corresponding path program 19 times [2021-10-15 20:25:39,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:25:39,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598162557] [2021-10-15 20:25:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:25:39,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:25:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:25:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:39,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:25:39,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598162557] [2021-10-15 20:25:39,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598162557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:39,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911221406] [2021-10-15 20:25:39,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-15 20:25:39,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:25:39,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:25:39,625 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:25:39,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-15 20:25:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:25:41,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-15 20:25:41,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:25:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:41,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911221406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:41,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:25:41,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-15 20:25:41,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345271695] [2021-10-15 20:25:41,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-15 20:25:41,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:25:41,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-15 20:25:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-15 20:25:41,836 INFO L87 Difference]: Start difference. First operand 248 states and 268 transitions. Second operand has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 27 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:25:41,984 INFO L93 Difference]: Finished difference Result 401 states and 440 transitions. [2021-10-15 20:25:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-15 20:25:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 27 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-10-15 20:25:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:25:41,986 INFO L225 Difference]: With dead ends: 401 [2021-10-15 20:25:41,986 INFO L226 Difference]: Without dead ends: 280 [2021-10-15 20:25:41,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 259.7ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-15 20:25:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-15 20:25:41,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 253. [2021-10-15 20:25:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 246 states have (on average 1.113821138211382) internal successors, (274), 252 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:41,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 274 transitions. [2021-10-15 20:25:42,000 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 274 transitions. Word has length 152 [2021-10-15 20:25:42,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:25:42,000 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 274 transitions. [2021-10-15 20:25:42,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 27 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:42,000 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 274 transitions. [2021-10-15 20:25:42,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-15 20:25:42,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:25:42,002 INFO L512 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:25:42,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-15 20:25:42,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-10-15 20:25:42,219 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:25:42,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:25:42,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1736875513, now seen corresponding path program 20 times [2021-10-15 20:25:42,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:25:42,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984127374] [2021-10-15 20:25:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:25:42,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:25:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:25:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:42,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:25:42,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984127374] [2021-10-15 20:25:42,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984127374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:42,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344393339] [2021-10-15 20:25:42,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:25:42,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:25:42,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:25:42,688 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:25:42,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-15 20:25:44,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 20:25:44,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:25:44,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-15 20:25:44,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:25:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:45,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344393339] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:45,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:25:45,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-15 20:25:45,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301723274] [2021-10-15 20:25:45,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-15 20:25:45,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:25:45,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-15 20:25:45,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-10-15 20:25:45,863 INFO L87 Difference]: Start difference. First operand 253 states and 274 transitions. Second operand has 27 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 27 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:46,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:25:46,570 INFO L93 Difference]: Finished difference Result 379 states and 418 transitions. [2021-10-15 20:25:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-15 20:25:46,570 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 27 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-10-15 20:25:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:25:46,571 INFO L225 Difference]: With dead ends: 379 [2021-10-15 20:25:46,571 INFO L226 Difference]: Without dead ends: 255 [2021-10-15 20:25:46,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 131 SyntacticMatches, 22 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 839.2ms TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-10-15 20:25:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-15 20:25:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2021-10-15 20:25:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 246 states have (on average 1.1097560975609757) internal successors, (273), 252 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 273 transitions. [2021-10-15 20:25:46,584 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 273 transitions. Word has length 153 [2021-10-15 20:25:46,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:25:46,585 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 273 transitions. [2021-10-15 20:25:46,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 27 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 273 transitions. [2021-10-15 20:25:46,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-15 20:25:46,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:25:46,586 INFO L512 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:25:46,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-15 20:25:46,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-15 20:25:46,798 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:25:46,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:25:46,798 INFO L82 PathProgramCache]: Analyzing trace with hash -414155440, now seen corresponding path program 20 times [2021-10-15 20:25:46,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:25:46,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149990506] [2021-10-15 20:25:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:25:46,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:25:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:25:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:47,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:25:47,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149990506] [2021-10-15 20:25:47,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149990506] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:47,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498341127] [2021-10-15 20:25:47,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 20:25:47,225 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:25:47,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:25:47,231 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:25:47,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-15 20:25:49,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 20:25:49,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 20:25:49,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-15 20:25:49,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:25:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:25:49,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498341127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:25:49,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:25:49,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-10-15 20:25:49,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034345291] [2021-10-15 20:25:49,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-15 20:25:49,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:25:49,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-15 20:25:49,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-15 20:25:49,733 INFO L87 Difference]: Start difference. First operand 253 states and 273 transitions. Second operand has 28 states, 28 states have (on average 5.857142857142857) internal successors, (164), 28 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:49,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:25:49,888 INFO L93 Difference]: Finished difference Result 406 states and 445 transitions. [2021-10-15 20:25:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-15 20:25:49,889 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.857142857142857) internal successors, (164), 28 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-10-15 20:25:49,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 20:25:49,890 INFO L225 Difference]: With dead ends: 406 [2021-10-15 20:25:49,890 INFO L226 Difference]: Without dead ends: 285 [2021-10-15 20:25:49,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 273.5ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-15 20:25:49,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-10-15 20:25:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 258. [2021-10-15 20:25:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 251 states have (on average 1.1115537848605577) internal successors, (279), 257 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 279 transitions. [2021-10-15 20:25:49,901 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 279 transitions. Word has length 157 [2021-10-15 20:25:49,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 20:25:49,901 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 279 transitions. [2021-10-15 20:25:49,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.857142857142857) internal successors, (164), 28 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:25:49,901 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 279 transitions. [2021-10-15 20:25:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-10-15 20:25:49,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 20:25:49,902 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:25:49,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-15 20:25:50,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-10-15 20:25:50,102 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2021-10-15 20:25:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:25:50,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1536746478, now seen corresponding path program 21 times [2021-10-15 20:25:50,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:25:50,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436269821] [2021-10-15 20:25:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:25:50,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:25:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:25:50,214 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:25:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:25:50,329 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:25:50,329 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:25:50,330 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 20:25:50,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-10-15 20:25:50,346 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:25:50,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:25:50 BoogieIcfgContainer [2021-10-15 20:25:50,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:25:50,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:25:50,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:25:50,483 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:25:50,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:36" (3/4) ... [2021-10-15 20:25:50,486 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:25:50,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:25:50,488 INFO L168 Benchmark]: Toolchain (without parser) took 134828.64 ms. Allocated memory was 109.1 MB in the beginning and 878.7 MB in the end (delta: 769.7 MB). Free memory was 71.8 MB in the beginning and 688.3 MB in the end (delta: -616.5 MB). Peak memory consumption was 153.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:25:50,488 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 81.7 MB in the end (delta: 27.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:25:50,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.28 ms. Allocated memory is still 109.1 MB. Free memory was 71.7 MB in the beginning and 79.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:25:50,489 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.02 ms. Allocated memory is still 109.1 MB. Free memory was 79.9 MB in the beginning and 77.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:25:50,490 INFO L168 Benchmark]: Boogie Preprocessor took 50.92 ms. Allocated memory is still 109.1 MB. Free memory was 77.8 MB in the beginning and 76.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:25:50,490 INFO L168 Benchmark]: RCFGBuilder took 779.26 ms. Allocated memory is still 109.1 MB. Free memory was 75.8 MB in the beginning and 56.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:25:50,490 INFO L168 Benchmark]: TraceAbstraction took 133619.14 ms. Allocated memory was 109.1 MB in the beginning and 878.7 MB in the end (delta: 769.7 MB). Free memory was 56.4 MB in the beginning and 688.3 MB in the end (delta: -632.0 MB). Peak memory consumption was 139.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:25:50,491 INFO L168 Benchmark]: Witness Printer took 4.11 ms. Allocated memory is still 878.7 MB. Free memory is still 688.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:25:50,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 81.7 MB in the end (delta: 27.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.28 ms. Allocated memory is still 109.1 MB. Free memory was 71.7 MB in the beginning and 79.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.02 ms. Allocated memory is still 109.1 MB. Free memory was 79.9 MB in the beginning and 77.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.92 ms. Allocated memory is still 109.1 MB. Free memory was 77.8 MB in the beginning and 76.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 779.26 ms. Allocated memory is still 109.1 MB. Free memory was 75.8 MB in the beginning and 56.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 133619.14 ms. Allocated memory was 109.1 MB in the beginning and 878.7 MB in the end (delta: 769.7 MB). Free memory was 56.4 MB in the beginning and 688.3 MB in the end (delta: -632.0 MB). Peak memory consumption was 139.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.11 ms. Allocated memory is still 878.7 MB. Free memory is still 688.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 165, overapproximation of bitwiseAnd at line 166. Possible FailurePath: [L213] unsigned int a ; [L214] unsigned int ma = __VERIFIER_nondet_uint(); [L215] signed char ea = __VERIFIER_nondet_char(); [L216] unsigned int b ; [L217] unsigned int mb = __VERIFIER_nondet_uint(); [L218] signed char eb = __VERIFIER_nondet_char(); [L219] unsigned int r_mul ; [L220] unsigned int zero ; [L221] unsigned int one ; [L222] int sb ; [L223] int tmp ; [L224] int tmp___0 ; [L225] int tmp___1 ; [L226] int __retres16 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L230] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND FALSE !(m < 1U << 24U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L231] one = base2flt(1, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L232] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L233] b = base2flt(mb, eb) [L235] COND FALSE !(b < zero) [L238] COND TRUE b > zero [L239] tmp = 1 [L243] sb = tmp [L140] unsigned int res ; [L141] unsigned int ma ; [L142] unsigned int mb ; [L143] unsigned long long accu ; [L144] int ea ; [L145] int eb ; [L146] unsigned int tmp ; [L147] unsigned int __retres10 ; [L150] COND FALSE !(a < b) [L157] COND FALSE !(! b) [L163] ma = a & ((1U << 24U) - 1U) [L164] EXPR (int )(a >> 24U) - 128 [L164] ea = (int )(a >> 24U) - 128 [L165] ma = ma | (1U << 24U) [L166] mb = b & ((1U << 24U) - 1U) [L167] (int )(b >> 24U) - 128 - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 164]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 164]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 170]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 170]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 193]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 193]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 139 locations, 34 error locations. Started 1 CEGAR loops. OverallTime: 133400.4ms, OverallIterations: 67, TraceHistogramMax: 25, EmptinessCheckTime: 81.8ms, AutomataDifference: 13397.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7039 SDtfs, 7509 SDslu, 32378 SDs, 0 SdLazy, 19107 SolverSat, 911 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8634.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5721 GetRequests, 4657 SyntacticMatches, 253 SemanticMatches, 811 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 10776.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=66, InterpolantAutomatonStates: 882, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 875.2ms AutomataMinimizationTime, 66 MinimizatonAttempts, 1466 StatesRemovedByMinimization, 64 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 664.0ms SsaConstructionTime, 35789.3ms SatisfiabilityAnalysisTime, 32130.9ms InterpolantComputationTime, 10189 NumberOfCodeBlocks, 10164 NumberOfCodeBlocksAsserted, 381 NumberOfCheckSat, 9911 ConstructedInterpolants, 0 QuantifiedInterpolants, 39587 SizeOfPredicates, 108 NumberOfNonLiveVariables, 12719 ConjunctsInSsa, 1140 ConjunctsInUnsatCore, 120 InterpolantComputations, 21 PerfectInterpolantSequences, 132/44695 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-15 20:25:50,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab5dc3a-096b-4bb0-975a-1aad6234376c/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...