./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer --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 9c20edfd7ede05443471560aa2c7be34d4e8c171 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:13:56,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:13:56,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:13:56,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:13:56,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:13:56,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:13:56,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:13:56,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:13:56,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:13:56,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:13:56,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:13:56,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:13:56,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:13:56,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:13:56,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:13:56,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:13:56,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:13:56,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:13:56,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:13:56,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:13:56,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:13:56,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:13:56,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:13:56,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:13:56,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:13:56,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:13:56,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:13:56,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:13:56,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:13:56,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:13:56,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:13:56,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:13:56,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:13:56,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:13:56,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:13:56,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:13:56,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:13:56,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:13:56,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:13:56,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:13:56,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:13:56,295 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-29 23:13:56,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:13:56,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:13:56,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:13:56,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:13:56,360 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:13:56,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:13:56,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:13:56,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:13:56,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:13:56,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:13:56,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:13:56,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:13:56,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:13:56,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:13:56,364 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 23:13:56,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:13:56,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:13:56,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:13:56,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:13:56,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:13:56,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:13:56,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:13:56,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:13:56,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:13:56,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:13:56,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:13:56,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:13:56,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:13:56,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:13:56,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:13:56,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:13:56,369 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-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c20edfd7ede05443471560aa2c7be34d4e8c171 [2020-11-29 23:13:56,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:13:56,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:13:56,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:13:56,823 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:13:56,824 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:13:56,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4.c [2020-11-29 23:13:56,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/data/288ca656e/81f335d3bb494892bc8aed5374ede31a/FLAG214860324 [2020-11-29 23:13:57,401 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:13:57,402 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/sv-benchmarks/c/bitvector/gcd_4.c [2020-11-29 23:13:57,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/data/288ca656e/81f335d3bb494892bc8aed5374ede31a/FLAG214860324 [2020-11-29 23:13:57,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/data/288ca656e/81f335d3bb494892bc8aed5374ede31a [2020-11-29 23:13:57,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:13:57,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:13:57,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:13:57,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:13:57,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:13:57,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:13:57" (1/1) ... [2020-11-29 23:13:57,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c77227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:57, skipping insertion in model container [2020-11-29 23:13:57,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:13:57" (1/1) ... [2020-11-29 23:13:57,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:13:57,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:13:58,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:13:58,062 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:13:58,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:13:58,125 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:13:58,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58 WrapperNode [2020-11-29 23:13:58,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:13:58,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:13:58,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:13:58,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:13:58,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (1/1) ... [2020-11-29 23:13:58,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (1/1) ... [2020-11-29 23:13:58,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:13:58,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:13:58,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:13:58,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:13:58,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (1/1) ... [2020-11-29 23:13:58,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (1/1) ... [2020-11-29 23:13:58,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (1/1) ... [2020-11-29 23:13:58,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (1/1) ... [2020-11-29 23:13:58,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (1/1) ... [2020-11-29 23:13:58,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (1/1) ... [2020-11-29 23:13:58,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (1/1) ... [2020-11-29 23:13:58,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:13:58,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:13:58,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:13:58,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:13:58,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:13:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:13:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:13:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:13:58,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:13:58,663 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:13:58,664 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-29 23:13:58,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:58 BoogieIcfgContainer [2020-11-29 23:13:58,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:13:58,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:13:58,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:13:58,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:13:58,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:13:57" (1/3) ... [2020-11-29 23:13:58,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d4ce02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:13:58, skipping insertion in model container [2020-11-29 23:13:58,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:58" (2/3) ... [2020-11-29 23:13:58,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d4ce02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:13:58, skipping insertion in model container [2020-11-29 23:13:58,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:58" (3/3) ... [2020-11-29 23:13:58,678 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2020-11-29 23:13:58,692 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:13:58,697 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-29 23:13:58,712 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-29 23:13:58,741 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:13:58,742 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:13:58,742 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:13:58,742 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:13:58,742 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:13:58,743 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:13:58,743 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:13:58,743 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:13:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-29 23:13:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 23:13:58,796 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:13:58,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 23:13:58,798 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:13:58,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:58,806 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-11-29 23:13:58,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:58,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138685111] [2020-11-29 23:13:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:59,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:59,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138685111] [2020-11-29 23:13:59,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:59,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:13:59,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520836562] [2020-11-29 23:13:59,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:13:59,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:59,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:13:59,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:13:59,074 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-11-29 23:13:59,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:59,207 INFO L93 Difference]: Finished difference Result 94 states and 114 transitions. [2020-11-29 23:13:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:13:59,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-29 23:13:59,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:13:59,220 INFO L225 Difference]: With dead ends: 94 [2020-11-29 23:13:59,220 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 23:13:59,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:13:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 23:13:59,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2020-11-29 23:13:59,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 23:13:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-29 23:13:59,266 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 4 [2020-11-29 23:13:59,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:13:59,267 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-29 23:13:59,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:13:59,268 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-29 23:13:59,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 23:13:59,268 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:13:59,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 23:13:59,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:13:59,270 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:13:59,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:59,271 INFO L82 PathProgramCache]: Analyzing trace with hash 28699785, now seen corresponding path program 1 times [2020-11-29 23:13:59,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:59,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109010532] [2020-11-29 23:13:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:59,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109010532] [2020-11-29 23:13:59,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:59,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:13:59,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303826156] [2020-11-29 23:13:59,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:13:59,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:59,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:13:59,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:13:59,331 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-11-29 23:13:59,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:59,451 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-29 23:13:59,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:13:59,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 23:13:59,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:13:59,454 INFO L225 Difference]: With dead ends: 40 [2020-11-29 23:13:59,454 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 23:13:59,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:13:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 23:13:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2020-11-29 23:13:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 23:13:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-29 23:13:59,470 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2020-11-29 23:13:59,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:13:59,471 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-29 23:13:59,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:13:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-29 23:13:59,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:13:59,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:13:59,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:59,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:13:59,473 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:13:59,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:59,474 INFO L82 PathProgramCache]: Analyzing trace with hash 302707703, now seen corresponding path program 1 times [2020-11-29 23:13:59,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:59,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069109808] [2020-11-29 23:13:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:59,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069109808] [2020-11-29 23:13:59,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:59,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:13:59,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499593337] [2020-11-29 23:13:59,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:13:59,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:59,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:13:59,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:13:59,573 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2020-11-29 23:13:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:59,652 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-11-29 23:13:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:13:59,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 23:13:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:13:59,654 INFO L225 Difference]: With dead ends: 25 [2020-11-29 23:13:59,655 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 23:13:59,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:13:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 23:13:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-11-29 23:13:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 23:13:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-11-29 23:13:59,662 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2020-11-29 23:13:59,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:13:59,662 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-11-29 23:13:59,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:13:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-11-29 23:13:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:13:59,663 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:13:59,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:59,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:13:59,664 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:13:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:59,665 INFO L82 PathProgramCache]: Analyzing trace with hash 302707895, now seen corresponding path program 1 times [2020-11-29 23:13:59,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:59,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561296976] [2020-11-29 23:13:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:13:59,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561296976] [2020-11-29 23:13:59,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:59,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:13:59,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494308071] [2020-11-29 23:13:59,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:13:59,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:59,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:13:59,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:13:59,736 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2020-11-29 23:13:59,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:59,852 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-29 23:13:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:13:59,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 23:13:59,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:13:59,855 INFO L225 Difference]: With dead ends: 28 [2020-11-29 23:13:59,856 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 23:13:59,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:13:59,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 23:13:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-11-29 23:13:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 23:13:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-29 23:13:59,876 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 8 [2020-11-29 23:13:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:13:59,877 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-29 23:13:59,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:13:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-29 23:13:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:13:59,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:13:59,882 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:59,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:13:59,883 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:13:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:59,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1796493490, now seen corresponding path program 1 times [2020-11-29 23:13:59,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:59,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022324446] [2020-11-29 23:13:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:14:00,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:14:00,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022324446] [2020-11-29 23:14:00,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:14:00,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:14:00,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576489145] [2020-11-29 23:14:00,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:14:00,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:14:00,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:14:00,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:14:00,032 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 5 states. [2020-11-29 23:14:00,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:14:00,121 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-11-29 23:14:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:14:00,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 23:14:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:14:00,128 INFO L225 Difference]: With dead ends: 35 [2020-11-29 23:14:00,129 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 23:14:00,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:14:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 23:14:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 23:14:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:14:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-29 23:14:00,134 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2020-11-29 23:14:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:14:00,135 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-29 23:14:00,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:14:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-29 23:14:00,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:14:00,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:14:00,138 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:14:00,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:14:00,139 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:14:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:14:00,140 INFO L82 PathProgramCache]: Analyzing trace with hash 844992871, now seen corresponding path program 1 times [2020-11-29 23:14:00,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:14:00,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705857686] [2020-11-29 23:14:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:14:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:14:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:14:00,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705857686] [2020-11-29 23:14:00,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393643163] [2020-11-29 23:14:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:14:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:14:00,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 23:14:00,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:14:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:14:00,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:14:00,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-29 23:14:00,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990038038] [2020-11-29 23:14:00,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:14:00,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:14:00,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:14:00,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:14:00,437 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-11-29 23:14:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:14:00,489 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-11-29 23:14:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:14:00,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 23:14:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:14:00,491 INFO L225 Difference]: With dead ends: 41 [2020-11-29 23:14:00,491 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 23:14:00,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:14:00,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 23:14:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-29 23:14:00,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 23:14:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-11-29 23:14:00,496 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 16 [2020-11-29 23:14:00,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:14:00,496 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-11-29 23:14:00,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:14:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-11-29 23:14:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 23:14:00,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:14:00,497 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:14:00,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 23:14:00,698 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:14:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:14:00,699 INFO L82 PathProgramCache]: Analyzing trace with hash 620020322, now seen corresponding path program 2 times [2020-11-29 23:14:00,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:14:00,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582146806] [2020-11-29 23:14:00,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:14:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:14:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:14:00,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582146806] [2020-11-29 23:14:00,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303362027] [2020-11-29 23:14:00,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:14:00,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:14:00,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:14:00,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:14:00,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:14:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 23:14:00,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:14:00,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2020-11-29 23:14:00,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071242902] [2020-11-29 23:14:00,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:14:00,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:14:00,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:14:00,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:14:00,962 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2020-11-29 23:14:01,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:14:01,185 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-11-29 23:14:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:14:01,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-11-29 23:14:01,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:14:01,187 INFO L225 Difference]: With dead ends: 58 [2020-11-29 23:14:01,187 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 23:14:01,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:14:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 23:14:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-29 23:14:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 23:14:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-11-29 23:14:01,195 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 20 [2020-11-29 23:14:01,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:14:01,195 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-11-29 23:14:01,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:14:01,196 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-11-29 23:14:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 23:14:01,197 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:14:01,197 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:14:01,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:14:01,416 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:14:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:14:01,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1505427811, now seen corresponding path program 1 times [2020-11-29 23:14:01,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:14:01,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543155993] [2020-11-29 23:14:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:14:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:14:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 23:14:01,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543155993] [2020-11-29 23:14:01,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469846739] [2020-11-29 23:14:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:14:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:14:01,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:14:01,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:14:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:14:01,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:14:01,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2020-11-29 23:14:01,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191251689] [2020-11-29 23:14:01,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 23:14:01,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:14:01,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 23:14:01,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:14:01,694 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 11 states. [2020-11-29 23:14:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:14:02,028 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2020-11-29 23:14:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:14:02,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-11-29 23:14:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:14:02,030 INFO L225 Difference]: With dead ends: 74 [2020-11-29 23:14:02,030 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 23:14:02,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-11-29 23:14:02,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 23:14:02,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2020-11-29 23:14:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-29 23:14:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2020-11-29 23:14:02,050 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 24 [2020-11-29 23:14:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:14:02,050 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2020-11-29 23:14:02,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 23:14:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2020-11-29 23:14:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 23:14:02,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:14:02,053 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 23:14:02,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:14:02,270 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:14:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:14:02,270 INFO L82 PathProgramCache]: Analyzing trace with hash -396406318, now seen corresponding path program 3 times [2020-11-29 23:14:02,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:14:02,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532049083] [2020-11-29 23:14:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:14:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:14:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:14:02,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532049083] [2020-11-29 23:14:02,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609148231] [2020-11-29 23:14:02,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:14:02,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 23:14:02,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:14:02,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:14:02,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:14:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 23:14:02,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:14:02,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2020-11-29 23:14:02,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187807696] [2020-11-29 23:14:02,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:14:02,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:14:02,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:14:02,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-11-29 23:14:02,547 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand 6 states. [2020-11-29 23:14:02,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:14:02,607 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-11-29 23:14:02,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:14:02,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-29 23:14:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:14:02,609 INFO L225 Difference]: With dead ends: 67 [2020-11-29 23:14:02,609 INFO L226 Difference]: Without dead ends: 65 [2020-11-29 23:14:02,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:14:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-29 23:14:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 41. [2020-11-29 23:14:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 23:14:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-11-29 23:14:02,616 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 28 [2020-11-29 23:14:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:14:02,620 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-11-29 23:14:02,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:14:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-11-29 23:14:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 23:14:02,621 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:14:02,622 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:14:02,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:14:02,843 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:14:02,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:14:02,844 INFO L82 PathProgramCache]: Analyzing trace with hash 294750227, now seen corresponding path program 2 times [2020-11-29 23:14:02,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:14:02,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401791958] [2020-11-29 23:14:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:14:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:14:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 23:14:02,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401791958] [2020-11-29 23:14:02,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:14:02,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:14:02,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174262576] [2020-11-29 23:14:02,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:14:02,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:14:02,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:14:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:14:02,993 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 6 states. [2020-11-29 23:14:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:14:03,067 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-11-29 23:14:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:14:03,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-11-29 23:14:03,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:14:03,068 INFO L225 Difference]: With dead ends: 53 [2020-11-29 23:14:03,068 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 23:14:03,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:14:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 23:14:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-11-29 23:14:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 23:14:03,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-11-29 23:14:03,073 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 32 [2020-11-29 23:14:03,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:14:03,074 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-11-29 23:14:03,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:14:03,074 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-11-29 23:14:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 23:14:03,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:14:03,075 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:14:03,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 23:14:03,075 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 23:14:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:14:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2137389843, now seen corresponding path program 3 times [2020-11-29 23:14:03,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:14:03,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176127328] [2020-11-29 23:14:03,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:14:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:14:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 51 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 23:14:03,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176127328] [2020-11-29 23:14:03,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964594769] [2020-11-29 23:14:03,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:14:03,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 23:14:03,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:14:03,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:14:03,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:14:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-29 23:14:03,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:14:03,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2020-11-29 23:14:03,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437735282] [2020-11-29 23:14:03,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 23:14:03,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:14:03,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 23:14:03,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:14:03,317 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 11 states. [2020-11-29 23:14:03,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:14:03,667 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-11-29 23:14:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 23:14:03,668 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-11-29 23:14:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:14:03,668 INFO L225 Difference]: With dead ends: 53 [2020-11-29 23:14:03,668 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:14:03,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-11-29 23:14:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:14:03,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:14:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:14:03,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:14:03,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-11-29 23:14:03,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:14:03,670 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:14:03,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 23:14:03,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:14:03,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:14:03,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-29 23:14:03,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:14:04,007 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-11-29 23:14:04,007 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-29 23:14:04,007 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-29 23:14:04,007 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-29 23:14:04,007 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-29 23:14:04,007 INFO L274 CegarLoopResult]: For program point L15-3(lines 13 29) no Hoare annotation was computed. [2020-11-29 23:14:04,007 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 23:14:04,007 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-11-29 23:14:04,008 INFO L277 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-11-29 23:14:04,008 INFO L274 CegarLoopResult]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2020-11-29 23:14:04,008 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 23:14:04,008 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 23:14:04,008 INFO L277 CegarLoopResult]: At program point L7-5(lines 6 11) the Hoare annotation is: true [2020-11-29 23:14:04,008 INFO L274 CegarLoopResult]: For program point L7-6(lines 7 9) no Hoare annotation was computed. [2020-11-29 23:14:04,008 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-29 23:14:04,008 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:14:04,008 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-29 23:14:04,008 INFO L277 CegarLoopResult]: At program point L7-8(lines 6 11) the Hoare annotation is: true [2020-11-29 23:14:04,008 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:14:04,008 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-29 23:14:04,008 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L277 CegarLoopResult]: At program point L28(lines 12 29) the Hoare annotation is: true [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-11-29 23:14:04,009 INFO L274 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-11-29 23:14:04,010 INFO L270 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (< ULTIMATE.start_gcd_test_~b 2147483647) (<= ULTIMATE.start_gcd_test_~a 2147483647) (<= 0 ULTIMATE.start_gcd_test_~b) (< 0 ULTIMATE.start_gcd_test_~a)) [2020-11-29 23:14:04,010 INFO L277 CegarLoopResult]: At program point L47(lines 32 48) the Hoare annotation is: true [2020-11-29 23:14:04,010 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-29 23:14:04,010 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-11-29 23:14:04,010 INFO L274 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-11-29 23:14:04,010 INFO L274 CegarLoopResult]: For program point L14-4(lines 13 29) no Hoare annotation was computed. [2020-11-29 23:14:04,010 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 23:14:04,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:14:04 BoogieIcfgContainer [2020-11-29 23:14:04,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:14:04,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:14:04,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:14:04,026 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:14:04,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:58" (3/4) ... [2020-11-29 23:14:04,031 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:14:04,043 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 23:14:04,043 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-29 23:14:04,043 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:14:04,044 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:14:04,093 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_659567c0-62c6-4b70-8172-d91c4f11f9fb/bin/uautomizer/witness.graphml [2020-11-29 23:14:04,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:14:04,095 INFO L168 Benchmark]: Toolchain (without parser) took 6288.28 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 68.4 MB in the beginning and 82.2 MB in the end (delta: -13.8 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:14:04,096 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 75.8 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:14:04,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.71 ms. Allocated memory is still 102.8 MB. Free memory was 68.1 MB in the beginning and 79.1 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:14:04,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.99 ms. Allocated memory is still 102.8 MB. Free memory was 79.1 MB in the beginning and 77.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:14:04,098 INFO L168 Benchmark]: Boogie Preprocessor took 26.62 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:14:04,099 INFO L168 Benchmark]: RCFGBuilder took 467.96 ms. Allocated memory is still 102.8 MB. Free memory was 76.4 MB in the beginning and 61.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:14:04,099 INFO L168 Benchmark]: TraceAbstraction took 5356.79 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 60.8 MB in the beginning and 84.3 MB in the end (delta: -23.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:14:04,100 INFO L168 Benchmark]: Witness Printer took 67.65 ms. Allocated memory is still 123.7 MB. Free memory was 84.3 MB in the beginning and 82.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:14:04,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 75.8 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.71 ms. Allocated memory is still 102.8 MB. Free memory was 68.1 MB in the beginning and 79.1 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.99 ms. Allocated memory is still 102.8 MB. Free memory was 79.1 MB in the beginning and 77.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.62 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 467.96 ms. Allocated memory is still 102.8 MB. Free memory was 76.4 MB in the beginning and 61.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5356.79 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 60.8 MB in the beginning and 84.3 MB in the end (delta: -23.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 67.65 ms. Allocated memory is still 123.7 MB. Free memory was 84.3 MB in the beginning and 82.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((b < 2147483647 && a <= 2147483647) && 0 <= b) && 0 < a - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 7, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 234 SDslu, 35 SDs, 0 SdLazy, 511 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 63 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 25 NumberOfFragments, 18 HoareAnnotationTreeSize, 6 FomulaSimplifications, 247 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 126 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 309 NumberOfCodeBlocks, 281 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 293 ConstructedInterpolants, 0 QuantifiedInterpolants, 35291 SizeOfPredicates, 13 NumberOfNonLiveVariables, 323 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 283/373 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 proved your program to be correct! Received shutdown request...