./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 89424fd59ce1746651f12884595f9ce3dcee5e0b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:57,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:57,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:57,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:57,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:57,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:57,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:57,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:57,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:57,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:57,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:57,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:57,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:57,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:57,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:57,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:57,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:57,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:57,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:57,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:57,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:57,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:57,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:57,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:57,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:57,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:57,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:57,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:57,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:57,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:57,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:57,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:57,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:57,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:57,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:57,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:57,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:57,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:57,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:57,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:57,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:57,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:57,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:57,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:57,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:57,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:57,507 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:57,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:57,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:57,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:57,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:57,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:57,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:57,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:57,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:57,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:57,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:57,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:57,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:57,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:57,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:57,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:57,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:57,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:57,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:57,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:57,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:57,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:57,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:57,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:57,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:57,516 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_d308760b-f998-4b02-83a3-a54150357445/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89424fd59ce1746651f12884595f9ce3dcee5e0b [2020-11-28 02:57:57,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:57,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:57,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:57,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:57,834 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:57,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2020-11-28 02:57:57,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/data/8e3dd5950/dbe61b99123647a59e82086986aeaf31/FLAG6c783b9ad [2020-11-28 02:57:58,550 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:58,551 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2020-11-28 02:57:58,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/data/8e3dd5950/dbe61b99123647a59e82086986aeaf31/FLAG6c783b9ad [2020-11-28 02:57:58,920 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/data/8e3dd5950/dbe61b99123647a59e82086986aeaf31 [2020-11-28 02:57:58,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:58,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:58,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:58,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:58,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:58,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee50ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:58, skipping insertion in model container [2020-11-28 02:57:58,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:58" (1/1) ... [2020-11-28 02:57:58,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:58,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:59,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:59,181 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:59,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:59,219 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:59,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59 WrapperNode [2020-11-28 02:57:59,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:59,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:59,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:59,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:59,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (1/1) ... [2020-11-28 02:57:59,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (1/1) ... [2020-11-28 02:57:59,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:59,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:59,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:59,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:59,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (1/1) ... [2020-11-28 02:57:59,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (1/1) ... [2020-11-28 02:57:59,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (1/1) ... [2020-11-28 02:57:59,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (1/1) ... [2020-11-28 02:57:59,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (1/1) ... [2020-11-28 02:57:59,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (1/1) ... [2020-11-28 02:57:59,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (1/1) ... [2020-11-28 02:57:59,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:59,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:59,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:59,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:59,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/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 [2020-11-28 02:57:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:59,760 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:59,761 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-28 02:57:59,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:59 BoogieIcfgContainer [2020-11-28 02:57:59,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:59,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:59,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:59,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:59,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:58" (1/3) ... [2020-11-28 02:57:59,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19638fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:59, skipping insertion in model container [2020-11-28 02:57:59,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:59" (2/3) ... [2020-11-28 02:57:59,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19638fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:59, skipping insertion in model container [2020-11-28 02:57:59,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:59" (3/3) ... [2020-11-28 02:57:59,774 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2020-11-28 02:57:59,787 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:59,792 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 02:57:59,805 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 02:57:59,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:59,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:59,833 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:59,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:59,834 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:59,834 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:59,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:59,834 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-11-28 02:57:59,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:57:59,858 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:59,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:59,860 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:59,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:59,866 INFO L82 PathProgramCache]: Analyzing trace with hash 823108671, now seen corresponding path program 1 times [2020-11-28 02:57:59,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:59,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537821260] [2020-11-28 02:57:59,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:00,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537821260] [2020-11-28 02:58:00,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:00,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:00,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759753478] [2020-11-28 02:58:00,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:00,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:00,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:00,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:00,062 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-11-28 02:58:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:00,085 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2020-11-28 02:58:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:00,086 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-11-28 02:58:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:00,096 INFO L225 Difference]: With dead ends: 87 [2020-11-28 02:58:00,096 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 02:58:00,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:00,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 02:58:00,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-28 02:58:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-28 02:58:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-11-28 02:58:00,138 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2020-11-28 02:58:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:00,138 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-11-28 02:58:00,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-11-28 02:58:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:58:00,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:00,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:00,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:00,140 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:00,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:00,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1122125888, now seen corresponding path program 1 times [2020-11-28 02:58:00,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:00,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737007050] [2020-11-28 02:58:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:00,171 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:00,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767316534] [2020-11-28 02:58:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/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 [2020-11-28 02:58:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:00,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:58:00,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:00,366 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:58:00,368 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:00,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737007050] [2020-11-28 02:58:00,405 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:00,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767316534] [2020-11-28 02:58:00,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:00,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:00,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015593135] [2020-11-28 02:58:00,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:00,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:00,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:00,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:00,416 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 5 states. [2020-11-28 02:58:00,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:00,687 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-11-28 02:58:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:00,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 02:58:00,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:00,689 INFO L225 Difference]: With dead ends: 69 [2020-11-28 02:58:00,689 INFO L226 Difference]: Without dead ends: 61 [2020-11-28 02:58:00,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:00,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-28 02:58:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2020-11-28 02:58:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 02:58:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-11-28 02:58:00,712 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2020-11-28 02:58:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:00,713 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-11-28 02:58:00,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-11-28 02:58:00,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:58:00,714 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:00,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:00,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 02:58:00,940 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:00,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2020-11-28 02:58:00,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:00,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901220577] [2020-11-28 02:58:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:00,964 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:00,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555739464] [2020-11-28 02:58:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/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 [2020-11-28 02:58:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:01,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 02:58:01,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:01,073 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:01,074 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:01,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901220577] [2020-11-28 02:58:01,150 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:01,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555739464] [2020-11-28 02:58:01,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:01,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:58:01,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989723460] [2020-11-28 02:58:01,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:01,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:01,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:01,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:01,153 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 7 states. [2020-11-28 02:58:01,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:01,436 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2020-11-28 02:58:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:01,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-28 02:58:01,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:01,438 INFO L225 Difference]: With dead ends: 79 [2020-11-28 02:58:01,439 INFO L226 Difference]: Without dead ends: 77 [2020-11-28 02:58:01,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:58:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-28 02:58:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2020-11-28 02:58:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 02:58:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-11-28 02:58:01,449 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2020-11-28 02:58:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:01,449 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-11-28 02:58:01,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-11-28 02:58:01,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:58:01,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:01,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:01,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:01,672 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:01,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:01,672 INFO L82 PathProgramCache]: Analyzing trace with hash 326377061, now seen corresponding path program 1 times [2020-11-28 02:58:01,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:01,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951726657] [2020-11-28 02:58:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:01,691 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:01,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905474434] [2020-11-28 02:58:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/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 [2020-11-28 02:58:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:01,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-28 02:58:01,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:01,822 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:01,823 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:01,876 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:01,877 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:01,951 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:58:01,952 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:02,033 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:58:02,033 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:02,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951726657] [2020-11-28 02:58:02,157 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:02,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905474434] [2020-11-28 02:58:02,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:02,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-28 02:58:02,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220002117] [2020-11-28 02:58:02,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 02:58:02,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:02,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 02:58:02,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:02,161 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 12 states. [2020-11-28 02:58:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:02,725 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-11-28 02:58:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 02:58:02,726 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-11-28 02:58:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:02,727 INFO L225 Difference]: With dead ends: 63 [2020-11-28 02:58:02,727 INFO L226 Difference]: Without dead ends: 61 [2020-11-28 02:58:02,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-11-28 02:58:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-28 02:58:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-11-28 02:58:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 02:58:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-28 02:58:02,737 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2020-11-28 02:58:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:02,737 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-28 02:58:02,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 02:58:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-28 02:58:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:58:02,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:02,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:02,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:02,939 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:02,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:02,940 INFO L82 PathProgramCache]: Analyzing trace with hash 115931464, now seen corresponding path program 1 times [2020-11-28 02:58:02,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:02,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882633868] [2020-11-28 02:58:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:02,961 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:02,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477127240] [2020-11-28 02:58:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/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 [2020-11-28 02:58:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-28 02:58:03,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:03,024 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:03,024 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:03,065 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:03,067 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:03,113 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:58:03,113 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:03,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882633868] [2020-11-28 02:58:03,258 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:03,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477127240] [2020-11-28 02:58:03,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:03,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-28 02:58:03,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334883138] [2020-11-28 02:58:03,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 02:58:03,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:03,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 02:58:03,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:58:03,260 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 11 states. [2020-11-28 02:58:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:03,644 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-11-28 02:58:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:58:03,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-11-28 02:58:03,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:03,645 INFO L225 Difference]: With dead ends: 61 [2020-11-28 02:58:03,645 INFO L226 Difference]: Without dead ends: 59 [2020-11-28 02:58:03,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-11-28 02:58:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-28 02:58:03,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-11-28 02:58:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 02:58:03,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-11-28 02:58:03,654 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2020-11-28 02:58:03,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:03,654 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-11-28 02:58:03,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 02:58:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-11-28 02:58:03,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:58:03,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:03,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:03,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:03,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:03,876 INFO L82 PathProgramCache]: Analyzing trace with hash -258823957, now seen corresponding path program 1 times [2020-11-28 02:58:03,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:03,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562980823] [2020-11-28 02:58:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:03,893 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:03,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757769967] [2020-11-28 02:58:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/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 [2020-11-28 02:58:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:03,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 02:58:03,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:04,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562980823] [2020-11-28 02:58:04,010 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:04,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757769967] [2020-11-28 02:58:04,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:04,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:04,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382766618] [2020-11-28 02:58:04,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:04,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:04,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:04,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:04,012 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 5 states. [2020-11-28 02:58:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:04,110 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-11-28 02:58:04,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:04,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-28 02:58:04,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:04,112 INFO L225 Difference]: With dead ends: 63 [2020-11-28 02:58:04,112 INFO L226 Difference]: Without dead ends: 61 [2020-11-28 02:58:04,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:04,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-28 02:58:04,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-11-28 02:58:04,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 02:58:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-11-28 02:58:04,127 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2020-11-28 02:58:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:04,127 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-11-28 02:58:04,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-11-28 02:58:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 02:58:04,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:04,128 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:04,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 02:58:04,344 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:04,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1152272204, now seen corresponding path program 1 times [2020-11-28 02:58:04,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:04,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780291148] [2020-11-28 02:58:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:04,353 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:04,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49143255] [2020-11-28 02:58:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:04,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-28 02:58:04,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:04,432 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:04,432 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:04,474 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:58:04,474 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:04,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780291148] [2020-11-28 02:58:04,576 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:04,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49143255] [2020-11-28 02:58:04,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:58:04,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-28 02:58:04,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491682582] [2020-11-28 02:58:04,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:58:04,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:04,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:04,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:04,578 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 10 states. [2020-11-28 02:58:04,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:04,907 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-11-28 02:58:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:58:04,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-11-28 02:58:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:04,908 INFO L225 Difference]: With dead ends: 100 [2020-11-28 02:58:04,908 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 02:58:04,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-11-28 02:58:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 02:58:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-11-28 02:58:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-28 02:58:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-11-28 02:58:04,924 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 27 [2020-11-28 02:58:04,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:04,924 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-11-28 02:58:04,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:58:04,925 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-11-28 02:58:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:58:04,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:04,926 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:05,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:05,144 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:05,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2144541361, now seen corresponding path program 1 times [2020-11-28 02:58:05,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:05,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052768437] [2020-11-28 02:58:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:05,157 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:05,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198592] [2020-11-28 02:58:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:05,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:58:05,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:05,229 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:58:05,230 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:05,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052768437] [2020-11-28 02:58:05,262 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:05,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198592] [2020-11-28 02:58:05,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:58:05,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 02:58:05,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528891186] [2020-11-28 02:58:05,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:05,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:05,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:05,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:05,263 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 7 states. [2020-11-28 02:58:05,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:05,540 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2020-11-28 02:58:05,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:58:05,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-11-28 02:58:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:05,553 INFO L225 Difference]: With dead ends: 152 [2020-11-28 02:58:05,553 INFO L226 Difference]: Without dead ends: 144 [2020-11-28 02:58:05,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:05,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-28 02:58:05,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 94. [2020-11-28 02:58:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-28 02:58:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2020-11-28 02:58:05,571 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 30 [2020-11-28 02:58:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:05,572 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2020-11-28 02:58:05,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:05,572 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2020-11-28 02:58:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:58:05,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:05,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:05,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:05,799 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:05,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2144541363, now seen corresponding path program 1 times [2020-11-28 02:58:05,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:05,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682176864] [2020-11-28 02:58:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:05,822 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:05,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536715088] [2020-11-28 02:58:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:05,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 02:58:05,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:05,897 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:05,898 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:05,928 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:05,929 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:06,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682176864] [2020-11-28 02:58:06,008 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:06,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536715088] [2020-11-28 02:58:06,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:58:06,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-28 02:58:06,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246934477] [2020-11-28 02:58:06,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:58:06,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:06,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:06,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:06,010 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 10 states. [2020-11-28 02:58:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:06,270 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2020-11-28 02:58:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:58:06,272 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-11-28 02:58:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:06,272 INFO L225 Difference]: With dead ends: 108 [2020-11-28 02:58:06,272 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 02:58:06,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-11-28 02:58:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 02:58:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-28 02:58:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-28 02:58:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 43 transitions. [2020-11-28 02:58:06,281 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 43 transitions. Word has length 30 [2020-11-28 02:58:06,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:06,281 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 43 transitions. [2020-11-28 02:58:06,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:58:06,281 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 43 transitions. [2020-11-28 02:58:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-28 02:58:06,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:06,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:06,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 02:58:06,512 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:06,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1391685667, now seen corresponding path program 1 times [2020-11-28 02:58:06,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:06,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985399805] [2020-11-28 02:58:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:06,523 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:06,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386612084] [2020-11-28 02:58:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:06,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-28 02:58:06,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:06,626 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:06,627 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:06,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:06,892 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 02:58:06,901 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:06,905 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:07,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985399805] [2020-11-28 02:58:07,043 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:07,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386612084] [2020-11-28 02:58:07,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:58:07,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-28 02:58:07,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907502847] [2020-11-28 02:58:07,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:58:07,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:07,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:07,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:07,046 INFO L87 Difference]: Start difference. First operand 44 states and 43 transitions. Second operand 10 states. [2020-11-28 02:58:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:07,465 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2020-11-28 02:58:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:58:07,465 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-11-28 02:58:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:07,466 INFO L225 Difference]: With dead ends: 44 [2020-11-28 02:58:07,466 INFO L226 Difference]: Without dead ends: 42 [2020-11-28 02:58:07,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-11-28 02:58:07,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-28 02:58:07,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-28 02:58:07,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 02:58:07,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 41 transitions. [2020-11-28 02:58:07,474 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 41 transitions. Word has length 39 [2020-11-28 02:58:07,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:07,474 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 41 transitions. [2020-11-28 02:58:07,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:58:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 41 transitions. [2020-11-28 02:58:07,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 02:58:07,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:07,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:07,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:07,690 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:07,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:07,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1675286918, now seen corresponding path program 1 times [2020-11-28 02:58:07,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:07,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055897770] [2020-11-28 02:58:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:07,709 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:07,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666587658] [2020-11-28 02:58:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:07,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-28 02:58:07,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:07,806 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:07,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:07,954 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:58:07,954 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:08,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055897770] [2020-11-28 02:58:08,090 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:08,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666587658] [2020-11-28 02:58:08,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:58:08,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-28 02:58:08,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575238429] [2020-11-28 02:58:08,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 02:58:08,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:08,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 02:58:08,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:58:08,092 INFO L87 Difference]: Start difference. First operand 42 states and 41 transitions. Second operand 12 states. [2020-11-28 02:58:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:08,745 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2020-11-28 02:58:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:58:08,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-11-28 02:58:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:08,746 INFO L225 Difference]: With dead ends: 42 [2020-11-28 02:58:08,746 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:58:08,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-11-28 02:58:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:58:08,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:58:08,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:58:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:58:08,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-11-28 02:58:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:08,748 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:08,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 02:58:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:08,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:58:08,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:08,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:58:09,427 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-11-28 02:58:09,713 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-11-28 02:58:10,036 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-11-28 02:58:10,206 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-11-28 02:58:10,415 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-11-28 02:58:10,619 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-11-28 02:58:10,621 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:58:10,621 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-28 02:58:10,621 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~r~0 0)) (.cse5 (= ULTIMATE.start_main_~s~0 1)) (.cse6 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse9 (<= ULTIMATE.start_main_~a~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~b~0))) (or (let ((.cse2 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0))) (and (= ULTIMATE.start_main_~k~0 1) .cse0 .cse1 (= .cse2 ULTIMATE.start_main_~a~0) .cse3 (<= ULTIMATE.start_main_~x~0 .cse2) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse10)) (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse3 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~y~0 1) .cse4 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse5 .cse6 (<= 1 ULTIMATE.start_main_~c~0) .cse7 .cse8 .cse9 .cse10))) [2020-11-28 02:58:10,621 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-28 02:58:10,621 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~r~0 0)) (.cse5 (= ULTIMATE.start_main_~s~0 1)) (.cse6 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse9 (<= ULTIMATE.start_main_~a~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~b~0))) (or (let ((.cse2 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0))) (and (= ULTIMATE.start_main_~k~0 1) .cse0 .cse1 (= .cse2 ULTIMATE.start_main_~a~0) .cse3 (<= ULTIMATE.start_main_~x~0 .cse2) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse10)) (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse3 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~y~0 1) .cse4 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse5 .cse6 (<= 1 ULTIMATE.start_main_~c~0) .cse7 .cse8 .cse9 .cse10))) [2020-11-28 02:58:10,621 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-28 02:58:10,621 INFO L270 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_main_~r~0 0)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~s~0 1)) (.cse6 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse9 (<= ULTIMATE.start_main_~a~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~b~0))) (or (let ((.cse1 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0))) (and (= ULTIMATE.start_main_~k~0 1) .cse0 (= .cse1 ULTIMATE.start_main_~a~0) .cse2 (<= ULTIMATE.start_main_~x~0 .cse1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse10)) (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse0 .cse2 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~y~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse5 .cse6 (<= 1 ULTIMATE.start_main_~c~0) .cse7 .cse8 .cse9 .cse10))) [2020-11-28 02:58:10,622 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-28 02:58:10,622 INFO L270 CegarLoopResult]: At program point L11-7(lines 52 53) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_main_~r~0 0)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~s~0 1)) (.cse6 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse9 (<= ULTIMATE.start_main_~a~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~b~0))) (or (let ((.cse1 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0))) (and (= ULTIMATE.start_main_~k~0 1) .cse0 (= .cse1 ULTIMATE.start_main_~a~0) .cse2 (<= ULTIMATE.start_main_~x~0 .cse1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse10)) (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse0 .cse2 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~y~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse5 .cse6 (<= 1 ULTIMATE.start_main_~c~0) .cse7 .cse8 .cse9 .cse10))) [2020-11-28 02:58:10,622 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-28 02:58:10,622 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: (let ((.cse0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (.cse1 (div ULTIMATE.start_main_~x~0 2))) (and (= ULTIMATE.start_main_~r~0 1) (<= 0 ULTIMATE.start_main_~c~0) (< ULTIMATE.start_main_~b~0 1) (= (+ ULTIMATE.start_main_~s~0 1) 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~a~0 .cse0) (<= 0 ULTIMATE.start_main_~b~0) (< .cse1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 .cse0) (= ULTIMATE.start_main_~q~0 1) (< ULTIMATE.start_main_~c~0 1) (< .cse1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_assume_abort_if_not_~cond 1))) [2020-11-28 02:58:10,622 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-28 02:58:10,622 INFO L277 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: true [2020-11-28 02:58:10,622 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:58:10,622 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:58:10,622 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:58:10,622 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-28 02:58:10,622 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-28 02:58:10,623 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-28 02:58:10,623 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-28 02:58:10,623 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-28 02:58:10,623 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-28 02:58:10,623 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:58:10,623 INFO L270 CegarLoopResult]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_main_~r~0 0)) (.cse4 (= ULTIMATE.start_main_~s~0 1)) (.cse5 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse6 (= ULTIMATE.start_main_~q~0 0)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (<= ULTIMATE.start_main_~a~0 1)) (.cse9 (<= 1 ULTIMATE.start_main_~b~0))) (or (let ((.cse1 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0))) (and (= ULTIMATE.start_main_~k~0 1) .cse0 (= .cse1 ULTIMATE.start_main_~a~0) .cse2 (<= ULTIMATE.start_main_~x~0 .cse1) .cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse4 .cse5 .cse6 .cse7 .cse8 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse9)) (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse0 .cse2 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~y~0 1) .cse3 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse4 .cse5 (<= 1 ULTIMATE.start_main_~c~0) .cse6 .cse7 .cse8 .cse9))) [2020-11-28 02:58:10,623 INFO L274 CegarLoopResult]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2020-11-28 02:58:10,623 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:58:10,623 INFO L277 CegarLoopResult]: At program point L73(lines 18 74) the Hoare annotation is: true [2020-11-28 02:58:10,623 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-11-28 02:58:10,623 INFO L274 CegarLoopResult]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L7-4(lines 7 9) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L270 CegarLoopResult]: At program point L41-1(lines 7 68) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~c~0)) (.cse3 (< ULTIMATE.start_main_~c~0 1)) (.cse4 (<= ULTIMATE.start_main_~y~0 1)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (let ((.cse1 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (.cse2 (div ULTIMATE.start_main_~x~0 2))) (and (= ULTIMATE.start_main_~r~0 1) .cse0 (< ULTIMATE.start_main_~b~0 1) (= (+ ULTIMATE.start_main_~s~0 1) 0) (= ULTIMATE.start_main_~a~0 .cse1) (<= 0 ULTIMATE.start_main_~b~0) (< .cse2 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 .cse1) (= ULTIMATE.start_main_~q~0 1) .cse3 (< .cse2 ULTIMATE.start_main_~x~0) .cse4 .cse5)) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse3 .cse4 (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~q~0 0) .cse5 (<= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~b~0)))) [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L8-4(line 8) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L8-6(line 8) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L8-8(line 8) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L8-10(line 8) no Hoare annotation was computed. [2020-11-28 02:58:10,624 INFO L274 CegarLoopResult]: For program point L42(lines 42 43) no Hoare annotation was computed. [2020-11-28 02:58:10,625 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 02:58:10,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:10 BoogieIcfgContainer [2020-11-28 02:58:10,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:10,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:10,652 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:10,652 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:10,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:59" (3/4) ... [2020-11-28 02:58:10,656 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:58:10,667 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-28 02:58:10,668 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:58:10,668 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:10,669 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:10,744 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d308760b-f998-4b02-83a3-a54150357445/bin/uautomizer/witness.graphml [2020-11-28 02:58:10,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:10,745 INFO L168 Benchmark]: Toolchain (without parser) took 11821.36 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 81.0 MB in the beginning and 33.7 MB in the end (delta: 47.2 MB). Peak memory consumption was 70.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:10,746 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 77.6 MB. Free memory was 36.7 MB in the beginning and 36.7 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:10,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.50 ms. Allocated memory is still 113.2 MB. Free memory was 81.0 MB in the beginning and 88.8 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:10,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.26 ms. Allocated memory is still 113.2 MB. Free memory was 88.3 MB in the beginning and 86.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:10,747 INFO L168 Benchmark]: Boogie Preprocessor took 37.76 ms. Allocated memory is still 113.2 MB. Free memory was 86.7 MB in the beginning and 85.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:10,748 INFO L168 Benchmark]: RCFGBuilder took 462.89 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 67.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:10,752 INFO L168 Benchmark]: TraceAbstraction took 10886.02 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 66.6 MB in the beginning and 37.9 MB in the end (delta: 28.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:10,760 INFO L168 Benchmark]: Witness Printer took 93.02 ms. Allocated memory is still 136.3 MB. Free memory was 37.9 MB in the beginning and 33.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:10,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 77.6 MB. Free memory was 36.7 MB in the beginning and 36.7 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.50 ms. Allocated memory is still 113.2 MB. Free memory was 81.0 MB in the beginning and 88.8 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.26 ms. Allocated memory is still 113.2 MB. Free memory was 88.3 MB in the beginning and 86.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.76 ms. Allocated memory is still 113.2 MB. Free memory was 86.7 MB in the beginning and 85.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 462.89 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 67.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10886.02 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 66.6 MB in the beginning and 37.9 MB in the end (delta: 28.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. * Witness Printer took 93.02 ms. Allocated memory is still 136.3 MB. Free memory was 37.9 MB in the beginning and 33.7 MB in the end (delta: 4.2 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: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((k == 1 && 1 <= cond) && p == 1) && c + b == a) && b == y) && x <= c + b) && r == 0) && s == 1) && yy == y * y) && q == 0) && cond == 1) && a <= 1) && b <= x) && 1 <= b) || ((((((((((((((c == a && 1 <= cond) && p == 1) && b == y) && k == 0) && y <= 1) && r == 0) && c == x) && s == 1) && yy == y * y) && 1 <= c) && q == 0) && cond == 1) && a <= 1) && 1 <= b) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((k == 1 && p == 1) && c + b == a) && b == y) && x <= c + b) && r == 0) && 1 == cond) && s == 1) && yy == y * y) && q == 0) && cond == 1) && a <= 1) && b <= x) && 1 <= b) || ((((((((((((((c == a && p == 1) && b == y) && k == 0) && y <= 1) && r == 0) && 1 == cond) && c == x) && s == 1) && yy == y * y) && 1 <= c) && q == 0) && cond == 1) && a <= 1) && 1 <= b) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((r == 1 && 0 <= c) && b < 1) && s + 1 == 0) && 1 <= cond) && a == p * x + r * y) && 0 <= b) && x / 2 < y) && y == p * x + r * y) && q == 1) && c < 1) && x / 2 < x) && y <= 1) && cond == 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((((((k == 1 && p == 1) && c + b == a) && b == y) && x <= c + b) && r == 0) && 1 == cond) && s == 1) && yy == y * y) && q == 0) && cond == 1) && a <= 1) && b <= x) && 1 <= b) || (((((((((((((c == a && p == 1) && b == y) && k == 0) && y <= 1) && r == 0) && c == x) && s == 1) && yy == y * y) && 1 <= c) && q == 0) && cond == 1) && a <= 1) && 1 <= b) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((k == 1 && 1 <= cond) && p == 1) && c + b == a) && b == y) && x <= c + b) && r == 0) && s == 1) && yy == y * y) && q == 0) && cond == 1) && a <= 1) && b <= x) && 1 <= b) || ((((((((((((((c == a && 1 <= cond) && p == 1) && b == y) && k == 0) && y <= 1) && r == 0) && c == x) && s == 1) && yy == y * y) && 1 <= c) && q == 0) && cond == 1) && a <= 1) && 1 <= b) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: ((((((((((((r == 1 && 0 <= c) && b < 1) && s + 1 == 0) && a == p * x + r * y) && 0 <= b) && x / 2 < y) && y == p * x + r * y) && q == 1) && c < 1) && x / 2 < x) && y <= 1) && cond == 1) || (((((((((((((0 <= c && a == x) && p == 1) && 1 <= x) && b == y) && c < 1) && y <= 1) && r == 0) && s == 1) && yy == y * y) && q == 0) && cond == 1) && a <= 1) && 1 <= b) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((((((k == 1 && p == 1) && c + b == a) && b == y) && x <= c + b) && r == 0) && 1 == cond) && s == 1) && yy == y * y) && q == 0) && cond == 1) && a <= 1) && b <= x) && 1 <= b) || ((((((((((((((c == a && p == 1) && b == y) && k == 0) && y <= 1) && r == 0) && 1 == cond) && c == x) && s == 1) && yy == y * y) && 1 <= c) && q == 0) && cond == 1) && a <= 1) && 1 <= b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.1s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 315 SDtfs, 1046 SDslu, 850 SDs, 0 SdLazy, 1042 SolverSat, 128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred 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, 121 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 25 NumberOfFragments, 654 HoareAnnotationTreeSize, 9 FomulaSimplifications, 739 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 596 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 100364 SizeOfPredicates, 109 NumberOfNonLiveVariables, 1282 ConjunctsInSsa, 209 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 2/30 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...