./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/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 64bit --witnessprinter.graph.data.programhash 554582d6fc3de8e87f5dd30e5019302b6e1b96be ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:12:40,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:12:40,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:12:40,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:12:40,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:12:40,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:12:40,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:12:40,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:12:40,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:12:40,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:12:40,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:12:40,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:12:40,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:12:40,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:12:40,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:12:40,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:12:40,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:12:40,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:12:40,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:12:40,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:12:40,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:12:40,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:12:40,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:12:40,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:12:40,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:12:40,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:12:40,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:12:40,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:12:40,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:12:40,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:12:40,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:12:40,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:12:40,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:12:40,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:12:40,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:12:40,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:12:40,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:12:40,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:12:40,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:12:40,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:12:40,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:12:40,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 19:12:40,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:12:40,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:12:40,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:12:40,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:12:40,459 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:12:40,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:12:40,460 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:12:40,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:12:40,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:12:40,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:12:40,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:12:40,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:12:40,463 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 19:12:40,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:12:40,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:12:40,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:12:40,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:12:40,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:12:40,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:12:40,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:12:40,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:12:40,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:12:40,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:12:40,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:12:40,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:12:40,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:12:40,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:12:40,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:12:40,467 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_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2020-11-29 19:12:40,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:12:40,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:12:40,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:12:40,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:12:40,841 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:12:40,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2020-11-29 19:12:40,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/data/cf83be2f9/7e23156e27314ce1b8cb708bce0f79cb/FLAG6d57ddf4c [2020-11-29 19:12:41,473 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:12:41,476 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2020-11-29 19:12:41,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/data/cf83be2f9/7e23156e27314ce1b8cb708bce0f79cb/FLAG6d57ddf4c [2020-11-29 19:12:41,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/data/cf83be2f9/7e23156e27314ce1b8cb708bce0f79cb [2020-11-29 19:12:41,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:12:41,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:12:41,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:12:41,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:12:41,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:12:41,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:12:41" (1/1) ... [2020-11-29 19:12:41,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5749b7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:41, skipping insertion in model container [2020-11-29 19:12:41,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:12:41" (1/1) ... [2020-11-29 19:12:41,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:12:41,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:12:42,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:12:42,095 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:12:42,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:12:42,130 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:12:42,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42 WrapperNode [2020-11-29 19:12:42,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:12:42,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:12:42,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:12:42,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:12:42,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (1/1) ... [2020-11-29 19:12:42,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (1/1) ... [2020-11-29 19:12:42,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:12:42,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:12:42,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:12:42,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:12:42,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (1/1) ... [2020-11-29 19:12:42,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (1/1) ... [2020-11-29 19:12:42,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (1/1) ... [2020-11-29 19:12:42,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (1/1) ... [2020-11-29 19:12:42,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (1/1) ... [2020-11-29 19:12:42,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (1/1) ... [2020-11-29 19:12:42,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (1/1) ... [2020-11-29 19:12:42,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:12:42,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:12:42,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:12:42,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:12:42,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/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 19:12:42,270 INFO L130 BoogieDeclarations]: Found specification of procedure p [2020-11-29 19:12:42,271 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2020-11-29 19:12:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:12:42,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:12:42,541 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:12:42,542 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-29 19:12:42,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:12:42 BoogieIcfgContainer [2020-11-29 19:12:42,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:12:42,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:12:42,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:12:42,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:12:42,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:12:41" (1/3) ... [2020-11-29 19:12:42,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2072c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:12:42, skipping insertion in model container [2020-11-29 19:12:42,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:12:42" (2/3) ... [2020-11-29 19:12:42,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2072c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:12:42, skipping insertion in model container [2020-11-29 19:12:42,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:12:42" (3/3) ... [2020-11-29 19:12:42,555 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2020-11-29 19:12:42,567 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:12:42,572 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 19:12:42,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 19:12:42,615 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:12:42,616 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:12:42,616 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:12:42,616 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:12:42,616 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:12:42,616 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:12:42,617 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:12:42,617 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:12:42,650 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-29 19:12:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:12:42,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:12:42,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:12:42,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:12:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:12:42,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1571177437, now seen corresponding path program 1 times [2020-11-29 19:12:42,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:12:42,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439162339] [2020-11-29 19:12:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:12:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:42,930 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 19:12:42,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439162339] [2020-11-29 19:12:42,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:12:42,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:12:42,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143995530] [2020-11-29 19:12:42,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:12:42,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:12:42,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:12:42,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:12:42,964 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-11-29 19:12:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:12:43,161 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-11-29 19:12:43,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:12:43,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-29 19:12:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:12:43,172 INFO L225 Difference]: With dead ends: 44 [2020-11-29 19:12:43,172 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 19:12:43,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:12:43,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 19:12:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2020-11-29 19:12:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 19:12:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-29 19:12:43,215 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2020-11-29 19:12:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:12:43,216 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-29 19:12:43,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:12:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-29 19:12:43,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:12:43,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:12:43,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:12:43,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:12:43,218 INFO L429 AbstractCegarLoop]: === Iteration 2 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:12:43,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:12:43,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1461860328, now seen corresponding path program 1 times [2020-11-29 19:12:43,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:12:43,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722316811] [2020-11-29 19:12:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:12:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:43,273 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 19:12:43,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722316811] [2020-11-29 19:12:43,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:12:43,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:12:43,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374043503] [2020-11-29 19:12:43,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:12:43,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:12:43,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:12:43,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:12:43,278 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-11-29 19:12:43,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:12:43,299 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-11-29 19:12:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:12:43,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-29 19:12:43,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:12:43,301 INFO L225 Difference]: With dead ends: 19 [2020-11-29 19:12:43,301 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 19:12:43,302 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 19:12:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 19:12:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 19:12:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 19:12:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-29 19:12:43,308 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2020-11-29 19:12:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:12:43,309 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-29 19:12:43,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:12:43,309 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-29 19:12:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:12:43,310 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:12:43,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:12:43,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:12:43,311 INFO L429 AbstractCegarLoop]: === Iteration 3 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:12:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:12:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1461867311, now seen corresponding path program 1 times [2020-11-29 19:12:43,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:12:43,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024036667] [2020-11-29 19:12:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:12:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:43,400 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 19:12:43,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024036667] [2020-11-29 19:12:43,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:12:43,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:12:43,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227508958] [2020-11-29 19:12:43,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:12:43,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:12:43,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:12:43,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:12:43,404 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-11-29 19:12:43,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:12:43,527 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-29 19:12:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:12:43,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-29 19:12:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:12:43,530 INFO L225 Difference]: With dead ends: 30 [2020-11-29 19:12:43,530 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 19:12:43,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:12:43,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 19:12:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-11-29 19:12:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 19:12:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-29 19:12:43,545 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2020-11-29 19:12:43,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:12:43,546 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-29 19:12:43,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:12:43,546 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-29 19:12:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:12:43,547 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:12:43,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:12:43,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:12:43,548 INFO L429 AbstractCegarLoop]: === Iteration 4 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:12:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:12:43,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1926753568, now seen corresponding path program 1 times [2020-11-29 19:12:43,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:12:43,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27273618] [2020-11-29 19:12:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:12:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:43,612 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 19:12:43,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27273618] [2020-11-29 19:12:43,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:12:43,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:12:43,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453306904] [2020-11-29 19:12:43,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:12:43,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:12:43,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:12:43,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:12:43,616 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2020-11-29 19:12:43,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:12:43,641 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-11-29 19:12:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:12:43,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 19:12:43,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:12:43,645 INFO L225 Difference]: With dead ends: 24 [2020-11-29 19:12:43,645 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 19:12:43,645 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 19:12:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 19:12:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 19:12:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 19:12:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-29 19:12:43,659 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2020-11-29 19:12:43,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:12:43,659 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-29 19:12:43,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:12:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-29 19:12:43,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:12:43,660 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:12:43,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:12:43,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:12:43,661 INFO L429 AbstractCegarLoop]: === Iteration 5 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:12:43,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:12:43,662 INFO L82 PathProgramCache]: Analyzing trace with hash 168982822, now seen corresponding path program 1 times [2020-11-29 19:12:43,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:12:43,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511862659] [2020-11-29 19:12:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:12:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:12:43,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511862659] [2020-11-29 19:12:43,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822175499] [2020-11-29 19:12:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/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 19:12:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:43,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:12:43,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:12:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:12:43,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:12:43,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-29 19:12:43,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914860531] [2020-11-29 19:12:43,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:12:43,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:12:43,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:12:43,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:12:43,920 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2020-11-29 19:12:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:12:44,090 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-11-29 19:12:44,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:12:44,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-29 19:12:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:12:44,093 INFO L225 Difference]: With dead ends: 45 [2020-11-29 19:12:44,093 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 19:12:44,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:12:44,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 19:12:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2020-11-29 19:12:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 19:12:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-11-29 19:12:44,106 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2020-11-29 19:12:44,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:12:44,107 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-11-29 19:12:44,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:12:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-11-29 19:12:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:12:44,108 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:12:44,108 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:12:44,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:12:44,309 INFO L429 AbstractCegarLoop]: === Iteration 6 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:12:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:12:44,310 INFO L82 PathProgramCache]: Analyzing trace with hash 943507206, now seen corresponding path program 1 times [2020-11-29 19:12:44,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:12:44,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950022140] [2020-11-29 19:12:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:12:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:12:44,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950022140] [2020-11-29 19:12:44,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059563465] [2020-11-29 19:12:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/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 19:12:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:44,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:12:44,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:12:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:12:44,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:12:44,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-29 19:12:44,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643980060] [2020-11-29 19:12:44,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:12:44,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:12:44,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:12:44,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:12:44,529 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 7 states. [2020-11-29 19:12:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:12:44,687 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-11-29 19:12:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:12:44,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-29 19:12:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:12:44,689 INFO L225 Difference]: With dead ends: 67 [2020-11-29 19:12:44,690 INFO L226 Difference]: Without dead ends: 65 [2020-11-29 19:12:44,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:12:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-29 19:12:44,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 33. [2020-11-29 19:12:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 19:12:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-11-29 19:12:44,705 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2020-11-29 19:12:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:12:44,706 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-11-29 19:12:44,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:12:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-11-29 19:12:44,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:12:44,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:12:44,707 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:12:44,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:12:44,908 INFO L429 AbstractCegarLoop]: === Iteration 7 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:12:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:12:44,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1019019044, now seen corresponding path program 1 times [2020-11-29 19:12:44,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:12:44,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346888990] [2020-11-29 19:12:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:12:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:12:45,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346888990] [2020-11-29 19:12:45,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190080161] [2020-11-29 19:12:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/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 19:12:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:45,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:12:45,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:12:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:12:45,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:12:45,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-29 19:12:45,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543070171] [2020-11-29 19:12:45,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:12:45,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:12:45,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:12:45,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:12:45,097 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2020-11-29 19:12:45,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:12:45,257 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-11-29 19:12:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:12:45,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-29 19:12:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:12:45,261 INFO L225 Difference]: With dead ends: 53 [2020-11-29 19:12:45,261 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 19:12:45,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:12:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 19:12:45,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2020-11-29 19:12:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 19:12:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-11-29 19:12:45,270 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 12 [2020-11-29 19:12:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:12:45,271 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-11-29 19:12:45,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:12:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-11-29 19:12:45,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:12:45,272 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:12:45,272 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:12:45,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:12:45,502 INFO L429 AbstractCegarLoop]: === Iteration 8 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:12:45,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:12:45,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1112438587, now seen corresponding path program 1 times [2020-11-29 19:12:45,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:12:45,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428686932] [2020-11-29 19:12:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:12:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:12:45,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428686932] [2020-11-29 19:12:45,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332149453] [2020-11-29 19:12:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/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 19:12:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:12:45,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:12:45,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:12:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:12:45,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:12:45,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-11-29 19:12:45,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041103818] [2020-11-29 19:12:45,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:12:45,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:12:45,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:12:45,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:12:45,764 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 9 states. [2020-11-29 19:12:46,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:12:46,116 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-11-29 19:12:46,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 19:12:46,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-29 19:12:46,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:12:46,118 INFO L225 Difference]: With dead ends: 47 [2020-11-29 19:12:46,118 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:12:46,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-11-29 19:12:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:12:46,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:12:46,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:12:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:12:46,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-29 19:12:46,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:12:46,134 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:12:46,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:12:46,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:12:46,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:12:46,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:12:46,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:12:46,811 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2020-11-29 19:12:46,961 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2020-11-29 19:12:46,964 INFO L274 CegarLoopResult]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2020-11-29 19:12:46,964 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-29 19:12:46,964 INFO L274 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-11-29 19:12:46,964 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-11-29 19:12:46,965 INFO L277 CegarLoopResult]: At program point pENTRY(lines 12 22) the Hoare annotation is: true [2020-11-29 19:12:46,965 INFO L270 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or (not (<= |p_#in~n| 2147483647)) (and (<= p_~n 2147483647) (<= p_~r 2147483647) (<= 1 p_~n) (<= p_~m 2147483647)) .cse0 .cse1) (or .cse0 .cse1 (not (<= |p_#in~n| 2147483646)) (<= p_~n 2147483646)))) [2020-11-29 19:12:46,965 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-29 19:12:46,965 INFO L274 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-11-29 19:12:46,965 INFO L274 CegarLoopResult]: For program point L13(lines 13 21) no Hoare annotation was computed. [2020-11-29 19:12:46,966 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-11-29 19:12:46,966 INFO L274 CegarLoopResult]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-29 19:12:46,966 INFO L270 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or (not (<= |p_#in~n| 2147483647)) .cse0 (and (<= p_~r 2147483647) (<= p_~n 2147483647) (<= p_~m 2147483647) (<= 1 p_~r)) .cse1) (or .cse0 .cse1 (not (<= |p_#in~n| 2147483646)) (<= p_~n 2147483646)))) [2020-11-29 19:12:46,966 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-11-29 19:12:46,966 INFO L274 CegarLoopResult]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-29 19:12:46,966 INFO L274 CegarLoopResult]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-29 19:12:46,967 INFO L274 CegarLoopResult]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-29 19:12:46,967 INFO L274 CegarLoopResult]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2020-11-29 19:12:46,967 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:12:46,967 INFO L270 CegarLoopResult]: At program point L31(lines 24 32) the Hoare annotation is: (<= ULTIMATE.start_main_~r~0 2147483647) [2020-11-29 19:12:46,967 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:12:46,967 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~r~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-11-29 19:12:46,967 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:12:46,968 INFO L274 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-11-29 19:12:46,968 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-11-29 19:12:46,968 INFO L274 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2020-11-29 19:12:46,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:12:46 BoogieIcfgContainer [2020-11-29 19:12:46,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:12:46,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:12:46,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:12:46,992 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:12:46,993 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:12:42" (3/4) ... [2020-11-29 19:12:46,996 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:12:47,003 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2020-11-29 19:12:47,019 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-29 19:12:47,019 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-29 19:12:47,090 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_51db0ffa-e94e-47d5-b54e-121c60b6b8d0/bin/uautomizer/witness.graphml [2020-11-29 19:12:47,090 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:12:47,092 INFO L168 Benchmark]: Toolchain (without parser) took 5275.06 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 62.5 MB in the beginning and 92.3 MB in the end (delta: -29.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:12:47,096 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 69.0 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:12:47,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.04 ms. Allocated memory is still 96.5 MB. Free memory was 62.3 MB in the beginning and 74.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:12:47,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.52 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 73.3 MB in the end (delta: 977.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:12:47,098 INFO L168 Benchmark]: Boogie Preprocessor took 18.84 ms. Allocated memory is still 96.5 MB. Free memory was 73.3 MB in the beginning and 72.3 MB in the end (delta: 975.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:12:47,098 INFO L168 Benchmark]: RCFGBuilder took 359.24 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 61.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:12:47,099 INFO L168 Benchmark]: TraceAbstraction took 4444.85 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 61.2 MB in the beginning and 95.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:12:47,099 INFO L168 Benchmark]: Witness Printer took 99.58 ms. Allocated memory is still 119.5 MB. Free memory was 95.4 MB in the beginning and 92.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:12:47,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 69.0 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.04 ms. Allocated memory is still 96.5 MB. Free memory was 62.3 MB in the beginning and 74.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.52 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 73.3 MB in the end (delta: 977.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.84 ms. Allocated memory is still 96.5 MB. Free memory was 73.3 MB in the beginning and 72.3 MB in the end (delta: 975.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 359.24 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 61.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4444.85 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 61.2 MB in the beginning and 95.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. * Witness Printer took 99.58 ms. Allocated memory is still 119.5 MB. Free memory was 95.4 MB in the beginning and 92.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: r <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 199 SDslu, 230 SDs, 0 SdLazy, 349 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, 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, 8 MinimizatonAttempts, 71 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 29 PreInvPairs, 29 NumberOfFragments, 100 HoareAnnotationTreeSize, 29 FomulaSimplifications, 2229 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 5 FomulaSimplificationsInter, 278 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4106 SizeOfPredicates, 9 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 0/30 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...