./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be --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 5a563aa356d9dd3528a8ada4c6bb9b80c6d50a5ba1d93068f50e98fce433a262 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 19:59:44,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:59:44,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:59:44,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:59:44,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:59:44,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:59:44,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:59:44,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:59:44,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:59:44,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:59:44,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:59:44,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:59:44,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:59:44,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:59:44,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:59:44,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:59:44,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:59:44,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:59:44,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:59:44,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:59:44,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:59:44,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:59:44,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:59:44,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:59:44,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:59:44,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:59:44,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:59:44,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:59:44,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:59:44,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:59:44,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:59:44,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:59:44,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:59:44,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:59:44,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:59:44,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:59:44,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:59:44,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:59:44,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:59:44,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:59:44,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:59:44,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-21 19:59:44,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:59:44,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:59:44,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:59:44,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:59:44,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:59:44,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:59:44,427 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:59:44,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:59:44,427 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:59:44,428 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:59:44,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:59:44,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:59:44,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:59:44,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:59:44,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:59:44,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:59:44,429 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 19:59:44,429 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:59:44,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:59:44,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:59:44,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:59:44,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:59:44,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:59:44,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:59:44,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:59:44,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:59:44,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:59:44,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:59:44,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:59:44,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:59:44,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:59:44,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:59:44,433 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_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a563aa356d9dd3528a8ada4c6bb9b80c6d50a5ba1d93068f50e98fce433a262 [2021-10-21 19:59:44,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:59:44,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:59:44,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:59:44,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:59:44,752 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:59:44,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/byte_add_1-2.i [2021-10-21 19:59:44,830 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/data/a7775eb28/8a7f12a75d6f48faadf1e4c15fd854b9/FLAGd7734ebcc [2021-10-21 19:59:45,285 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:59:45,285 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/sv-benchmarks/c/bitvector/byte_add_1-2.i [2021-10-21 19:59:45,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/data/a7775eb28/8a7f12a75d6f48faadf1e4c15fd854b9/FLAGd7734ebcc [2021-10-21 19:59:45,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/data/a7775eb28/8a7f12a75d6f48faadf1e4c15fd854b9 [2021-10-21 19:59:45,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:59:45,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:59:45,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:59:45,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:59:45,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:59:45,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:59:45" (1/1) ... [2021-10-21 19:59:45,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b251b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:45, skipping insertion in model container [2021-10-21 19:59:45,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:59:45" (1/1) ... [2021-10-21 19:59:45,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:59:45,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:59:45,944 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_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/sv-benchmarks/c/bitvector/byte_add_1-2.i[863,876] [2021-10-21 19:59:46,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:59:46,028 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:59:46,040 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_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/sv-benchmarks/c/bitvector/byte_add_1-2.i[863,876] [2021-10-21 19:59:46,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:59:46,071 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:59:46,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46 WrapperNode [2021-10-21 19:59:46,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:59:46,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:59:46,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:59:46,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:59:46,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (1/1) ... [2021-10-21 19:59:46,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (1/1) ... [2021-10-21 19:59:46,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:59:46,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:59:46,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:59:46,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:59:46,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (1/1) ... [2021-10-21 19:59:46,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (1/1) ... [2021-10-21 19:59:46,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (1/1) ... [2021-10-21 19:59:46,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (1/1) ... [2021-10-21 19:59:46,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (1/1) ... [2021-10-21 19:59:46,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (1/1) ... [2021-10-21 19:59:46,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (1/1) ... [2021-10-21 19:59:46,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:59:46,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:59:46,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:59:46,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:59:46,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (1/1) ... [2021-10-21 19:59:46,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:59:46,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:46,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:59:46,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:59:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:59:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:59:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:59:46,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:59:46,695 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:59:46,695 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-21 19:59:46,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:59:46 BoogieIcfgContainer [2021-10-21 19:59:46,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:59:46,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:59:46,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:59:46,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:59:46,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:59:45" (1/3) ... [2021-10-21 19:59:46,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7728026d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:59:46, skipping insertion in model container [2021-10-21 19:59:46,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:46" (2/3) ... [2021-10-21 19:59:46,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7728026d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:59:46, skipping insertion in model container [2021-10-21 19:59:46,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:59:46" (3/3) ... [2021-10-21 19:59:46,707 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_1-2.i [2021-10-21 19:59:46,712 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:59:46,712 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-21 19:59:46,763 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:59:46,769 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:59:46,770 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-21 19:59:46,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 75 states have (on average 1.9066666666666667) internal successors, (143), 113 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 19:59:46,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:46,793 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 19:59:46,794 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:46,800 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-21 19:59:46,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:46,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036261560] [2021-10-21 19:59:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:46,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:46,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:46,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036261560] [2021-10-21 19:59:46,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036261560] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:46,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:46,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 19:59:46,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970909107] [2021-10-21 19:59:46,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:59:46,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:59:46,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:59:46,982 INFO L87 Difference]: Start difference. First operand has 114 states, 75 states have (on average 1.9066666666666667) internal successors, (143), 113 states have internal predecessors, (143), 0 states have call successors, (0), 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, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:47,002 INFO L93 Difference]: Finished difference Result 135 states and 177 transitions. [2021-10-21 19:59:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:59:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-10-21 19:59:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:47,014 INFO L225 Difference]: With dead ends: 135 [2021-10-21 19:59:47,014 INFO L226 Difference]: Without dead ends: 69 [2021-10-21 19:59:47,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:59:47,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-21 19:59:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-21 19:59:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 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) [2021-10-21 19:59:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2021-10-21 19:59:47,053 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 4 [2021-10-21 19:59:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:47,054 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2021-10-21 19:59:47,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2021-10-21 19:59:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:59:47,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:47,056 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:47,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:59:47,057 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:47,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1944470950, now seen corresponding path program 1 times [2021-10-21 19:59:47,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:47,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045610095] [2021-10-21 19:59:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:47,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:47,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:47,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045610095] [2021-10-21 19:59:47,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045610095] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:47,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:47,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:59:47,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793543557] [2021-10-21 19:59:47,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:59:47,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:47,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:59:47,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:59:47,162 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-10-21 19:59:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:47,315 INFO L93 Difference]: Finished difference Result 145 states and 212 transitions. [2021-10-21 19:59:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:59:47,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2021-10-21 19:59:47,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:47,319 INFO L225 Difference]: With dead ends: 145 [2021-10-21 19:59:47,319 INFO L226 Difference]: Without dead ends: 98 [2021-10-21 19:59:47,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:59:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-21 19:59:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-10-21 19:59:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 93 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) [2021-10-21 19:59:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2021-10-21 19:59:47,331 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 13 [2021-10-21 19:59:47,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:47,332 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2021-10-21 19:59:47,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-10-21 19:59:47,332 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2021-10-21 19:59:47,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:59:47,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:47,338 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] [2021-10-21 19:59:47,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:59:47,339 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:47,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:47,359 INFO L82 PathProgramCache]: Analyzing trace with hash 565405448, now seen corresponding path program 1 times [2021-10-21 19:59:47,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:47,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658329384] [2021-10-21 19:59:47,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:47,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:59:47,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:47,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658329384] [2021-10-21 19:59:47,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658329384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:47,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:47,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:59:47,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625604047] [2021-10-21 19:59:47,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:59:47,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:47,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:59:47,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:59:47,580 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-10-21 19:59:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:47,796 INFO L93 Difference]: Finished difference Result 221 states and 296 transitions. [2021-10-21 19:59:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:59:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 [2021-10-21 19:59:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:47,798 INFO L225 Difference]: With dead ends: 221 [2021-10-21 19:59:47,799 INFO L226 Difference]: Without dead ends: 164 [2021-10-21 19:59:47,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:59:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-21 19:59:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 104. [2021-10-21 19:59:47,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 103 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) [2021-10-21 19:59:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 135 transitions. [2021-10-21 19:59:47,811 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 135 transitions. Word has length 20 [2021-10-21 19:59:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:47,811 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 135 transitions. [2021-10-21 19:59:47,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-10-21 19:59:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 135 transitions. [2021-10-21 19:59:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:59:47,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:47,813 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] [2021-10-21 19:59:47,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:59:47,814 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:47,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1055427225, now seen corresponding path program 1 times [2021-10-21 19:59:47,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:47,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051898949] [2021-10-21 19:59:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:47,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:59:47,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:47,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051898949] [2021-10-21 19:59:47,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051898949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:47,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:47,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:59:47,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795743751] [2021-10-21 19:59:47,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:59:47,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:47,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:59:47,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:59:47,927 INFO L87 Difference]: Start difference. First operand 104 states and 135 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:48,137 INFO L93 Difference]: Finished difference Result 259 states and 340 transitions. [2021-10-21 19:59:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:59:48,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-10-21 19:59:48,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:48,141 INFO L225 Difference]: With dead ends: 259 [2021-10-21 19:59:48,141 INFO L226 Difference]: Without dead ends: 194 [2021-10-21 19:59:48,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:59:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-21 19:59:48,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 120. [2021-10-21 19:59:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 119 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) [2021-10-21 19:59:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2021-10-21 19:59:48,161 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 23 [2021-10-21 19:59:48,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:48,161 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2021-10-21 19:59:48,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:48,162 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2021-10-21 19:59:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:59:48,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:48,168 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] [2021-10-21 19:59:48,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:59:48,169 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:48,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:48,172 INFO L82 PathProgramCache]: Analyzing trace with hash -2113419709, now seen corresponding path program 1 times [2021-10-21 19:59:48,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:48,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377924860] [2021-10-21 19:59:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:48,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:59:48,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:48,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377924860] [2021-10-21 19:59:48,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377924860] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:48,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:48,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:59:48,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5674278] [2021-10-21 19:59:48,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:59:48,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:48,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:59:48,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:59:48,277 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:48,289 INFO L93 Difference]: Finished difference Result 192 states and 248 transitions. [2021-10-21 19:59:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:59:48,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-10-21 19:59:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:48,291 INFO L225 Difference]: With dead ends: 192 [2021-10-21 19:59:48,292 INFO L226 Difference]: Without dead ends: 91 [2021-10-21 19:59:48,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:59:48,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-21 19:59:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-10-21 19:59:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.288888888888889) internal successors, (116), 90 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2021-10-21 19:59:48,300 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 26 [2021-10-21 19:59:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:48,301 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2021-10-21 19:59:48,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:48,301 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2021-10-21 19:59:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:59:48,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:48,302 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, 1, 1, 1] [2021-10-21 19:59:48,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:59:48,303 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:48,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1291653624, now seen corresponding path program 1 times [2021-10-21 19:59:48,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:48,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379751269] [2021-10-21 19:59:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:48,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:48,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:48,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379751269] [2021-10-21 19:59:48,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379751269] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:48,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:48,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:59:48,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9256431] [2021-10-21 19:59:48,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:59:48,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:59:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:59:48,404 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:48,417 INFO L93 Difference]: Finished difference Result 115 states and 149 transitions. [2021-10-21 19:59:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:59:48,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 19:59:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:48,422 INFO L225 Difference]: With dead ends: 115 [2021-10-21 19:59:48,422 INFO L226 Difference]: Without dead ends: 102 [2021-10-21 19:59:48,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:59:48,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-21 19:59:48,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-21 19:59:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.297029702970297) internal successors, (131), 101 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2021-10-21 19:59:48,429 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 32 [2021-10-21 19:59:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:48,430 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2021-10-21 19:59:48,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2021-10-21 19:59:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:59:48,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:48,432 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, 1, 1, 1] [2021-10-21 19:59:48,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:59:48,432 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:48,433 INFO L82 PathProgramCache]: Analyzing trace with hash 280536374, now seen corresponding path program 1 times [2021-10-21 19:59:48,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:48,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266336859] [2021-10-21 19:59:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:48,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:48,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:48,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266336859] [2021-10-21 19:59:48,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266336859] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:48,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646608576] [2021-10-21 19:59:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:48,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:48,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:48,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:48,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:59:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:48,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:59:48,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:48,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646608576] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:48,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:48,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-10-21 19:59:48,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171446315] [2021-10-21 19:59:48,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:59:48,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:48,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:59:48,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:59:48,982 INFO L87 Difference]: Start difference. First operand 102 states and 131 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:49,206 INFO L93 Difference]: Finished difference Result 218 states and 316 transitions. [2021-10-21 19:59:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:59:49,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 19:59:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:49,207 INFO L225 Difference]: With dead ends: 218 [2021-10-21 19:59:49,208 INFO L226 Difference]: Without dead ends: 164 [2021-10-21 19:59:49,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:59:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-21 19:59:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2021-10-21 19:59:49,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.25) internal successors, (170), 136 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 170 transitions. [2021-10-21 19:59:49,221 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 170 transitions. Word has length 32 [2021-10-21 19:59:49,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:49,222 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 170 transitions. [2021-10-21 19:59:49,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 170 transitions. [2021-10-21 19:59:49,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-21 19:59:49,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:49,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:49,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:49,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:49,434 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:49,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:49,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1198830924, now seen corresponding path program 1 times [2021-10-21 19:59:49,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:49,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479881578] [2021-10-21 19:59:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:49,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:49,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:49,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479881578] [2021-10-21 19:59:49,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479881578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:49,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828003101] [2021-10-21 19:59:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:49,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:49,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:49,591 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:49,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:59:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:49,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:59:49,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:59:50,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828003101] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:50,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:50,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-10-21 19:59:50,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501519288] [2021-10-21 19:59:50,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:59:50,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:59:50,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:59:50,057 INFO L87 Difference]: Start difference. First operand 137 states and 170 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:50,172 INFO L93 Difference]: Finished difference Result 258 states and 333 transitions. [2021-10-21 19:59:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:59:50,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-21 19:59:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:50,176 INFO L225 Difference]: With dead ends: 258 [2021-10-21 19:59:50,176 INFO L226 Difference]: Without dead ends: 139 [2021-10-21 19:59:50,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 72.4ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:59:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-21 19:59:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 124. [2021-10-21 19:59:50,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.2357723577235773) internal successors, (152), 123 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2021-10-21 19:59:50,196 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 39 [2021-10-21 19:59:50,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:50,196 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2021-10-21 19:59:50,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:50,198 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2021-10-21 19:59:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-21 19:59:50,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:50,203 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:50,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:50,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-21 19:59:50,404 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:50,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1326080275, now seen corresponding path program 1 times [2021-10-21 19:59:50,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:50,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188928492] [2021-10-21 19:59:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:50,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:50,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:50,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188928492] [2021-10-21 19:59:50,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188928492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:50,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977816851] [2021-10-21 19:59:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:50,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:50,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:50,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:50,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:59:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:50,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:59:50,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:59:50,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977816851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:50,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:50,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-10-21 19:59:50,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14200746] [2021-10-21 19:59:50,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:59:50,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:50,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:59:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:59:50,947 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:51,199 INFO L93 Difference]: Finished difference Result 286 states and 377 transitions. [2021-10-21 19:59:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:59:51,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-21 19:59:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:51,201 INFO L225 Difference]: With dead ends: 286 [2021-10-21 19:59:51,201 INFO L226 Difference]: Without dead ends: 177 [2021-10-21 19:59:51,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:59:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-21 19:59:51,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 144. [2021-10-21 19:59:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.2167832167832169) internal successors, (174), 143 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) [2021-10-21 19:59:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 174 transitions. [2021-10-21 19:59:51,207 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 174 transitions. Word has length 48 [2021-10-21 19:59:51,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:51,208 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 174 transitions. [2021-10-21 19:59:51,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:51,208 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 174 transitions. [2021-10-21 19:59:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-21 19:59:51,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:51,209 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:51,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:51,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-21 19:59:51,434 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:51,435 INFO L82 PathProgramCache]: Analyzing trace with hash -954330780, now seen corresponding path program 1 times [2021-10-21 19:59:51,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:51,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77555915] [2021-10-21 19:59:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:51,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:51,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:51,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77555915] [2021-10-21 19:59:51,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77555915] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:51,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086702432] [2021-10-21 19:59:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:51,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:51,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:51,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:51,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:59:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:51,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:59:51,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-21 19:59:52,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086702432] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:52,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:52,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2021-10-21 19:59:52,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430064409] [2021-10-21 19:59:52,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:59:52,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:52,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:59:52,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:59:52,023 INFO L87 Difference]: Start difference. First operand 144 states and 174 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:52,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:52,211 INFO L93 Difference]: Finished difference Result 326 states and 420 transitions. [2021-10-21 19:59:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:59:52,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-10-21 19:59:52,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:52,213 INFO L225 Difference]: With dead ends: 326 [2021-10-21 19:59:52,213 INFO L226 Difference]: Without dead ends: 194 [2021-10-21 19:59:52,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:59:52,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-21 19:59:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2021-10-21 19:59:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.2024539877300613) internal successors, (196), 163 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2021-10-21 19:59:52,219 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 64 [2021-10-21 19:59:52,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:52,219 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2021-10-21 19:59:52,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:52,220 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2021-10-21 19:59:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-21 19:59:52,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:52,221 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-10-21 19:59:52,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:52,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:52,426 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:52,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:52,427 INFO L82 PathProgramCache]: Analyzing trace with hash 25170625, now seen corresponding path program 1 times [2021-10-21 19:59:52,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:52,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75112230] [2021-10-21 19:59:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:52,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-10-21 19:59:52,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:52,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75112230] [2021-10-21 19:59:52,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75112230] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:52,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:52,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:59:52,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161414589] [2021-10-21 19:59:52,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:59:52,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:59:52,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:59:52,534 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2021-10-21 19:59:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:52,785 INFO L93 Difference]: Finished difference Result 611 states and 733 transitions. [2021-10-21 19:59:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:59:52,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 80 [2021-10-21 19:59:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:52,789 INFO L225 Difference]: With dead ends: 611 [2021-10-21 19:59:52,789 INFO L226 Difference]: Without dead ends: 474 [2021-10-21 19:59:52,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:59:52,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-10-21 19:59:52,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 164. [2021-10-21 19:59:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.2024539877300613) internal successors, (196), 163 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:52,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2021-10-21 19:59:52,800 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 80 [2021-10-21 19:59:52,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:52,801 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2021-10-21 19:59:52,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2021-10-21 19:59:52,801 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2021-10-21 19:59:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-21 19:59:52,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:52,803 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1] [2021-10-21 19:59:52,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:59:52,804 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:52,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:52,805 INFO L82 PathProgramCache]: Analyzing trace with hash -705708941, now seen corresponding path program 1 times [2021-10-21 19:59:52,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:52,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302335685] [2021-10-21 19:59:52,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:52,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-10-21 19:59:52,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:52,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302335685] [2021-10-21 19:59:52,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302335685] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:52,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:52,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:59:52,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020304883] [2021-10-21 19:59:52,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:59:52,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:52,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:59:52,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:59:52,922 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2021-10-21 19:59:53,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:53,006 INFO L93 Difference]: Finished difference Result 487 states and 583 transitions. [2021-10-21 19:59:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:59:53,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 83 [2021-10-21 19:59:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:53,009 INFO L225 Difference]: With dead ends: 487 [2021-10-21 19:59:53,009 INFO L226 Difference]: Without dead ends: 350 [2021-10-21 19:59:53,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:59:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-21 19:59:53,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 257. [2021-10-21 19:59:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.20703125) internal successors, (309), 256 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 309 transitions. [2021-10-21 19:59:53,022 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 309 transitions. Word has length 83 [2021-10-21 19:59:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:53,022 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 309 transitions. [2021-10-21 19:59:53,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2021-10-21 19:59:53,022 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 309 transitions. [2021-10-21 19:59:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-21 19:59:53,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:53,024 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1] [2021-10-21 19:59:53,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-21 19:59:53,025 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:53,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1924468269, now seen corresponding path program 1 times [2021-10-21 19:59:53,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:53,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131882286] [2021-10-21 19:59:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:53,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-10-21 19:59:53,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:53,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131882286] [2021-10-21 19:59:53,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131882286] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:53,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:53,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:59:53,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715009610] [2021-10-21 19:59:53,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:59:53,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:53,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:59:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:59:53,202 INFO L87 Difference]: Start difference. First operand 257 states and 309 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:53,607 INFO L93 Difference]: Finished difference Result 1254 states and 1506 transitions. [2021-10-21 19:59:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:59:53,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-21 19:59:53,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:53,616 INFO L225 Difference]: With dead ends: 1254 [2021-10-21 19:59:53,616 INFO L226 Difference]: Without dead ends: 1024 [2021-10-21 19:59:53,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:59:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-10-21 19:59:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 257. [2021-10-21 19:59:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.20703125) internal successors, (309), 256 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 309 transitions. [2021-10-21 19:59:53,634 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 309 transitions. Word has length 83 [2021-10-21 19:59:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:53,635 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 309 transitions. [2021-10-21 19:59:53,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 309 transitions. [2021-10-21 19:59:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-21 19:59:53,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:53,636 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2021-10-21 19:59:53,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 19:59:53,637 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:53,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:53,637 INFO L82 PathProgramCache]: Analyzing trace with hash 335021134, now seen corresponding path program 1 times [2021-10-21 19:59:53,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:53,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083469055] [2021-10-21 19:59:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:53,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-21 19:59:53,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:53,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083469055] [2021-10-21 19:59:53,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083469055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:53,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559112232] [2021-10-21 19:59:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:53,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:53,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:53,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:53,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:59:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:53,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:59:53,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-21 19:59:54,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559112232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:54,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:59:54,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-21 19:59:54,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771477298] [2021-10-21 19:59:54,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:59:54,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:54,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:59:54,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:59:54,255 INFO L87 Difference]: Start difference. First operand 257 states and 309 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2021-10-21 19:59:54,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:54,471 INFO L93 Difference]: Finished difference Result 727 states and 877 transitions. [2021-10-21 19:59:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:59:54,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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 83 [2021-10-21 19:59:54,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:54,475 INFO L225 Difference]: With dead ends: 727 [2021-10-21 19:59:54,475 INFO L226 Difference]: Without dead ends: 497 [2021-10-21 19:59:54,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:59:54,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-10-21 19:59:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 463. [2021-10-21 19:59:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.2142857142857142) internal successors, (561), 462 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 561 transitions. [2021-10-21 19:59:54,495 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 561 transitions. Word has length 83 [2021-10-21 19:59:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:54,495 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 561 transitions. [2021-10-21 19:59:54,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2021-10-21 19:59:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 561 transitions. [2021-10-21 19:59:54,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-21 19:59:54,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:54,497 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1] [2021-10-21 19:59:54,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:54,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:59:54,716 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:54,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1183041321, now seen corresponding path program 1 times [2021-10-21 19:59:54,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:54,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143072550] [2021-10-21 19:59:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:54,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-10-21 19:59:54,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:54,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143072550] [2021-10-21 19:59:54,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143072550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:54,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:54,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:59:54,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831691341] [2021-10-21 19:59:54,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:59:54,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:59:54,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:59:54,837 INFO L87 Difference]: Start difference. First operand 463 states and 561 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) [2021-10-21 19:59:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:55,377 INFO L93 Difference]: Finished difference Result 1252 states and 1501 transitions. [2021-10-21 19:59:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:59:55,378 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 85 [2021-10-21 19:59:55,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:55,384 INFO L225 Difference]: With dead ends: 1252 [2021-10-21 19:59:55,384 INFO L226 Difference]: Without dead ends: 1022 [2021-10-21 19:59:55,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 88.6ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:59:55,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-10-21 19:59:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 459. [2021-10-21 19:59:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.2161572052401746) internal successors, (557), 458 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 557 transitions. [2021-10-21 19:59:55,410 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 557 transitions. Word has length 85 [2021-10-21 19:59:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:55,411 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 557 transitions. [2021-10-21 19:59:55,417 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) [2021-10-21 19:59:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 557 transitions. [2021-10-21 19:59:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-21 19:59:55,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:55,419 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:55,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-21 19:59:55,420 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:55,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:55,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1279960591, now seen corresponding path program 1 times [2021-10-21 19:59:55,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:55,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142263833] [2021-10-21 19:59:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:55,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-21 19:59:55,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:55,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142263833] [2021-10-21 19:59:55,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142263833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:55,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522773367] [2021-10-21 19:59:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:55,578 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:55,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:55,579 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:55,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:59:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:55,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:59:55,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-21 19:59:56,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522773367] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:56,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:56,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2021-10-21 19:59:56,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344259307] [2021-10-21 19:59:56,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:59:56,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:56,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:59:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:59:56,536 INFO L87 Difference]: Start difference. First operand 459 states and 557 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2021-10-21 19:59:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:56,731 INFO L93 Difference]: Finished difference Result 936 states and 1131 transitions. [2021-10-21 19:59:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:59:56,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 86 [2021-10-21 19:59:56,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:56,735 INFO L225 Difference]: With dead ends: 936 [2021-10-21 19:59:56,736 INFO L226 Difference]: Without dead ends: 706 [2021-10-21 19:59:56,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:59:56,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-10-21 19:59:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 677. [2021-10-21 19:59:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.217455621301775) internal successors, (823), 676 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 823 transitions. [2021-10-21 19:59:56,767 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 823 transitions. Word has length 86 [2021-10-21 19:59:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:56,767 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 823 transitions. [2021-10-21 19:59:56,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2021-10-21 19:59:56,768 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 823 transitions. [2021-10-21 19:59:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-21 19:59:56,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:56,770 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:56,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:56,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 19:59:56,986 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 19:59:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1767062975, now seen corresponding path program 1 times [2021-10-21 19:59:56,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:56,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511601435] [2021-10-21 19:59:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:56,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-21 19:59:57,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:57,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511601435] [2021-10-21 19:59:57,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511601435] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:57,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599064785] [2021-10-21 19:59:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:57,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:57,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:57,138 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:57,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:59:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:57,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:59:57,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 61 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-21 19:59:57,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599064785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:57,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:59:57,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-10-21 19:59:57,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594728446] [2021-10-21 19:59:57,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:59:57,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:57,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:59:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:59:57,857 INFO L87 Difference]: Start difference. First operand 677 states and 823 transitions. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 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) [2021-10-21 20:00:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:00:00,007 INFO L93 Difference]: Finished difference Result 2043 states and 2461 transitions. [2021-10-21 20:00:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-21 20:00:00,007 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 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 89 [2021-10-21 20:00:00,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:00:00,014 INFO L225 Difference]: With dead ends: 2043 [2021-10-21 20:00:00,014 INFO L226 Difference]: Without dead ends: 1389 [2021-10-21 20:00:00,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 764.9ms TimeCoverageRelationStatistics Valid=459, Invalid=2193, Unknown=0, NotChecked=0, Total=2652 [2021-10-21 20:00:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-10-21 20:00:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 786. [2021-10-21 20:00:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 1.219108280254777) internal successors, (957), 785 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 957 transitions. [2021-10-21 20:00:00,055 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 957 transitions. Word has length 89 [2021-10-21 20:00:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:00:00,055 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 957 transitions. [2021-10-21 20:00:00,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 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) [2021-10-21 20:00:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 957 transitions. [2021-10-21 20:00:00,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-21 20:00:00,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:00:00,057 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:00:00,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-21 20:00:00,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-21 20:00:00,274 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 20:00:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:00,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1720526203, now seen corresponding path program 1 times [2021-10-21 20:00:00,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:00,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621192994] [2021-10-21 20:00:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:00,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 56 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-21 20:00:00,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:00,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621192994] [2021-10-21 20:00:00,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621192994] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:00:00,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122303743] [2021-10-21 20:00:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:00,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:00:00,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:00,434 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:00:00,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:00:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:00,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 20:00:00,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 44 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-21 20:00:01,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122303743] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:00:01,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:00:01,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-21 20:00:01,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653674755] [2021-10-21 20:00:01,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:00:01,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:01,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:00:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:00:01,396 INFO L87 Difference]: Start difference. First operand 786 states and 957 transitions. Second operand has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:00:02,039 INFO L93 Difference]: Finished difference Result 3238 states and 3834 transitions. [2021-10-21 20:00:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 20:00:02,040 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-10-21 20:00:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:00:02,053 INFO L225 Difference]: With dead ends: 3238 [2021-10-21 20:00:02,053 INFO L226 Difference]: Without dead ends: 2575 [2021-10-21 20:00:02,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 230.6ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-10-21 20:00:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2021-10-21 20:00:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 1018. [2021-10-21 20:00:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 1017 states have (on average 1.3077679449360866) internal successors, (1330), 1017 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1330 transitions. [2021-10-21 20:00:02,110 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1330 transitions. Word has length 91 [2021-10-21 20:00:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:00:02,111 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1330 transitions. [2021-10-21 20:00:02,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1330 transitions. [2021-10-21 20:00:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-21 20:00:02,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:00:02,113 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:00:02,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:02,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 20:00:02,326 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 20:00:02,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:02,327 INFO L82 PathProgramCache]: Analyzing trace with hash -717591297, now seen corresponding path program 1 times [2021-10-21 20:00:02,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:02,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294293305] [2021-10-21 20:00:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:02,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-21 20:00:02,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:02,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294293305] [2021-10-21 20:00:02,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294293305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:00:02,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574017222] [2021-10-21 20:00:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:02,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:00:02,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:02,429 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:00:02,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 20:00:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:02,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:00:02,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-21 20:00:03,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574017222] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:00:03,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:00:03,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-10-21 20:00:03,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783349498] [2021-10-21 20:00:03,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:00:03,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:03,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:00:03,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:00:03,101 INFO L87 Difference]: Start difference. First operand 1018 states and 1330 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:03,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:00:03,385 INFO L93 Difference]: Finished difference Result 1437 states and 1873 transitions. [2021-10-21 20:00:03,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:00:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2021-10-21 20:00:03,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:00:03,398 INFO L225 Difference]: With dead ends: 1437 [2021-10-21 20:00:03,398 INFO L226 Difference]: Without dead ends: 1044 [2021-10-21 20:00:03,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:00:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-10-21 20:00:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1031. [2021-10-21 20:00:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 1.2854368932038835) internal successors, (1324), 1030 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1324 transitions. [2021-10-21 20:00:03,460 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1324 transitions. Word has length 97 [2021-10-21 20:00:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:00:03,461 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1324 transitions. [2021-10-21 20:00:03,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1324 transitions. [2021-10-21 20:00:03,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-21 20:00:03,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:00:03,464 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:00:03,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:03,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:00:03,686 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 20:00:03,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:03,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1305223133, now seen corresponding path program 1 times [2021-10-21 20:00:03,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:03,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251062036] [2021-10-21 20:00:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:03,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:03,873 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-21 20:00:03,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:03,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251062036] [2021-10-21 20:00:03,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251062036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:00:03,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407340709] [2021-10-21 20:00:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:03,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:00:03,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:03,875 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:00:03,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 20:00:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:04,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 20:00:04,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 35 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-21 20:00:05,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407340709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:00:05,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:00:05,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-10-21 20:00:05,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6341146] [2021-10-21 20:00:05,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:00:05,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:05,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:00:05,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:00:05,293 INFO L87 Difference]: Start difference. First operand 1031 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:00:05,932 INFO L93 Difference]: Finished difference Result 2830 states and 3450 transitions. [2021-10-21 20:00:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:00:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2021-10-21 20:00:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:00:05,946 INFO L225 Difference]: With dead ends: 2830 [2021-10-21 20:00:05,946 INFO L226 Difference]: Without dead ends: 2793 [2021-10-21 20:00:05,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 179.9ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:00:05,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2021-10-21 20:00:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 967. [2021-10-21 20:00:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 966 states have (on average 1.284679089026915) internal successors, (1241), 966 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1241 transitions. [2021-10-21 20:00:06,000 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1241 transitions. Word has length 98 [2021-10-21 20:00:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:00:06,001 INFO L470 AbstractCegarLoop]: Abstraction has 967 states and 1241 transitions. [2021-10-21 20:00:06,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:06,001 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1241 transitions. [2021-10-21 20:00:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-21 20:00:06,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:00:06,004 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:00:06,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:06,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:00:06,228 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-21 20:00:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:06,229 INFO L82 PathProgramCache]: Analyzing trace with hash 840122728, now seen corresponding path program 1 times [2021-10-21 20:00:06,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:06,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372477498] [2021-10-21 20:00:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:06,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:06,304 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:00:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:00:06,382 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:00:06,382 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:00:06,383 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:00:06,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-21 20:00:06,409 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:00:06,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:00:06 BoogieIcfgContainer [2021-10-21 20:00:06,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:00:06,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:00:06,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:00:06,501 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:00:06,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:59:46" (3/4) ... [2021-10-21 20:00:06,504 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:00:06,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:00:06,506 INFO L168 Benchmark]: Toolchain (without parser) took 20839.26 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 73.0 MB in the beginning and 65.2 MB in the end (delta: 7.8 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:06,506 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 115.3 MB. Free memory is still 89.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:00:06,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.63 ms. Allocated memory is still 115.3 MB. Free memory was 72.8 MB in the beginning and 87.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:06,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 115.3 MB. Free memory was 87.1 MB in the beginning and 85.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:06,507 INFO L168 Benchmark]: Boogie Preprocessor took 27.10 ms. Allocated memory is still 115.3 MB. Free memory was 85.4 MB in the beginning and 83.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:06,508 INFO L168 Benchmark]: RCFGBuilder took 553.71 ms. Allocated memory is still 115.3 MB. Free memory was 83.8 MB in the beginning and 68.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:06,508 INFO L168 Benchmark]: TraceAbstraction took 19800.43 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 68.0 MB in the beginning and 65.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:06,508 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 138.4 MB. Free memory is still 65.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:00:06,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 115.3 MB. Free memory is still 89.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 404.63 ms. Allocated memory is still 115.3 MB. Free memory was 72.8 MB in the beginning and 87.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 115.3 MB. Free memory was 87.1 MB in the beginning and 85.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.10 ms. Allocated memory is still 115.3 MB. Free memory was 85.4 MB in the beginning and 83.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 553.71 ms. Allocated memory is still 115.3 MB. Free memory was 83.8 MB in the beginning and 68.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19800.43 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 68.0 MB in the beginning and 65.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.17 ms. Allocated memory is still 138.4 MB. Free memory is still 65.2 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: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L116] unsigned int a, b, r; [L118] b = __VERIFIER_nondet_uint() [L120] a = 234770789 [L34] unsigned char a0, a1, a2, a3; [L35] unsigned char b0, b1, b2, b3; [L36] unsigned char r0, r1, r2, r3; [L37] unsigned short carry; [L38] unsigned short partial_sum; [L39] unsigned int r; [L40] unsigned char i; [L41] unsigned char na, nb; [L42] a0 = a [L43] a1 = a >> 8 [L44] a2 = a >> 16U [L45] a3 = a >> 24U [L46] b0 = b [L47] b1 = b >> 8U [L48] b2 = b >> 16U [L49] b3 = b >> 24U [L50] na = (unsigned char)4 [L51] COND FALSE !(a3 == (unsigned char)0) [L60] nb = (unsigned char)4 [L61] COND FALSE !(b3 == (unsigned char)0) [L70] carry = (unsigned short)0 [L71] i = (unsigned char)0 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND TRUE i == (unsigned char)0 [L76] EXPR partial_sum + a0 [L76] partial_sum = partial_sum + a0 [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND TRUE i < nb [L82] COND TRUE i == (unsigned char)0 [L82] EXPR partial_sum + b0 [L82] partial_sum = partial_sum + b0 [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)255) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND TRUE i == (unsigned char)0 [L91] r0 = (unsigned char)partial_sum [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND TRUE i == (unsigned char)1 [L77] EXPR partial_sum + a1 [L77] partial_sum = partial_sum + a1 [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND TRUE i == (unsigned char)1 [L83] EXPR partial_sum + b1 [L83] partial_sum = partial_sum + b1 [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)255) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND FALSE !(i == (unsigned char)0) [L92] COND TRUE i == (unsigned char)1 [L92] r1 = (unsigned char)partial_sum [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND FALSE !(i == (unsigned char)1) [L78] COND TRUE i == (unsigned char)2 [L78] EXPR partial_sum + a2 [L78] partial_sum = partial_sum + a2 [L79] COND FALSE !(i == (unsigned char)3) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND FALSE !(i == (unsigned char)1) [L84] COND TRUE i == (unsigned char)2 [L84] EXPR partial_sum + b2 [L84] partial_sum = partial_sum + b2 [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)255) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND TRUE i == (unsigned char)2 [L93] r2 = (unsigned char)partial_sum [L94] COND FALSE !(i == (unsigned char)3) [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND TRUE i == (unsigned char)3 [L79] EXPR partial_sum + a3 [L79] partial_sum = partial_sum + a3 [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND TRUE i == (unsigned char)3 [L85] EXPR partial_sum + b3 [L85] partial_sum = partial_sum + b3 [L87] COND FALSE !(partial_sum > ((unsigned char)255)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND TRUE i == (unsigned char)3 [L94] r3 = (unsigned char)partial_sum [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L99] COND FALSE !(i < (unsigned char)4) [L108] r1 << 8U [L108] r2 << 16U [L108] r3 << 24U - UnprovableResult [Line: 52]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 52]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 54]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 54]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 56]: 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: 64]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 82]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 82]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 83]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 83]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 84]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 84]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 85]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 85]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 96]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 96]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 105]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 105]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: 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, 114 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 19645.3ms, OverallIterations: 21, TraceHistogramMax: 4, EmptinessCheckTime: 47.7ms, AutomataDifference: 6999.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2322 SDtfs, 3707 SDslu, 5828 SDs, 0 SdLazy, 4884 SolverSat, 371 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4007.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 926 GetRequests, 748 SyntacticMatches, 14 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 1801.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1031occurred in iteration=19, InterpolantAutomatonStates: 158, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 428.8ms AutomataMinimizationTime, 20 MinimizatonAttempts, 6038 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 122.7ms SsaConstructionTime, 1837.0ms SatisfiabilityAnalysisTime, 6040.2ms InterpolantComputationTime, 2004 NumberOfCodeBlocks, 2004 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1873 ConstructedInterpolants, 4 QuantifiedInterpolants, 9901 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1723 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 1372/1572 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 [2021-10-21 20:00:06,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c81f8e-4e48-46a3-9bf3-485e1cfb15ff/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...