./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.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_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/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 25ba378b5b8d10591d32c757e848cf2bb28769a9 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:25:02,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:25:02,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:25:02,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:25:02,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:25:02,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:25:02,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:25:02,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:25:02,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:25:02,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:25:02,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:25:02,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:25:02,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:25:02,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:25:02,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:25:02,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:25:02,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:25:02,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:25:02,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:25:02,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:25:02,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:25:02,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:25:02,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:25:02,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:25:02,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:25:02,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:25:02,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:25:02,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:25:02,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:25:02,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:25:02,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:25:02,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:25:02,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:25:02,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:25:02,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:25:02,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:25:02,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:25:02,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:25:02,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:25:02,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:25:02,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:25:02,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:25:02,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:25:02,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:25:02,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:25:02,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:25:02,778 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:25:02,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:25:02,778 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:25:02,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:25:02,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:25:02,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:25:02,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:25:02,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:25:02,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:25:02,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:25:02,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:25:02,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:25:02,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:25:02,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:25:02,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:25:02,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:25:02,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:25:02,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:25:02,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:25:02,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:25:02,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:25:02,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:25:02,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:25:02,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:25:02,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:25:02,783 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_fba376d2-50a1-49c6-baf0-45d031fede81/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25ba378b5b8d10591d32c757e848cf2bb28769a9 [2020-11-29 18:25:03,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:25:03,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:25:03,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:25:03,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:25:03,176 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:25:03,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2020-11-29 18:25:03,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/data/9305f4562/2f39dd2c97e5415d876c770dd4452c44/FLAG18ed30d9e [2020-11-29 18:25:03,890 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:25:03,893 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2020-11-29 18:25:03,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/data/9305f4562/2f39dd2c97e5415d876c770dd4452c44/FLAG18ed30d9e [2020-11-29 18:25:04,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/data/9305f4562/2f39dd2c97e5415d876c770dd4452c44 [2020-11-29 18:25:04,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:25:04,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:25:04,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:25:04,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:25:04,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:25:04,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316534a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04, skipping insertion in model container [2020-11-29 18:25:04,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:25:04,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:25:04,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:25:04,523 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:25:04,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:25:04,591 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:25:04,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04 WrapperNode [2020-11-29 18:25:04,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:25:04,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:25:04,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:25:04,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:25:04,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:25:04,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:25:04,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:25:04,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:25:04,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (1/1) ... [2020-11-29 18:25:04,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:25:04,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:25:04,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:25:04,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:25:04,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:25:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:25:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:25:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:25:04,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:25:05,406 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:25:05,406 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-11-29 18:25:05,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:25:05 BoogieIcfgContainer [2020-11-29 18:25:05,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:25:05,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:25:05,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:25:05,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:25:05,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:25:04" (1/3) ... [2020-11-29 18:25:05,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f0a380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:25:05, skipping insertion in model container [2020-11-29 18:25:05,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:04" (2/3) ... [2020-11-29 18:25:05,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f0a380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:25:05, skipping insertion in model container [2020-11-29 18:25:05,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:25:05" (3/3) ... [2020-11-29 18:25:05,419 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound20.c [2020-11-29 18:25:05,432 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:25:05,437 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 18:25:05,454 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 18:25:05,497 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:25:05,498 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:25:05,498 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:25:05,498 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:25:05,498 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:25:05,498 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:25:05,499 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:25:05,499 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:25:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-29 18:25:05,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:25:05,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:05,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:05,529 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:05,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:05,534 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-11-29 18:25:05,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:05,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223265121] [2020-11-29 18:25:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:05,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223265121] [2020-11-29 18:25:05,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:05,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:25:05,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789369048] [2020-11-29 18:25:05,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:25:05,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:05,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:25:05,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:25:05,709 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-29 18:25:05,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:05,731 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-11-29 18:25:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:25:05,732 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 18:25:05,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:05,742 INFO L225 Difference]: With dead ends: 83 [2020-11-29 18:25:05,742 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 18:25:05,746 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 [2020-11-29 18:25:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 18:25:05,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 18:25:05,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 18:25:05,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-29 18:25:05,790 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2020-11-29 18:25:05,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:05,790 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-29 18:25:05,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:25:05,791 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-29 18:25:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:25:05,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:05,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:05,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:25:05,792 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:05,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:05,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-11-29 18:25:05,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:05,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113893889] [2020-11-29 18:25:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:05,850 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:05,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961086797] [2020-11-29 18:25:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:05,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 18:25:05,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:06,018 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:25:06,019 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:06,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113893889] [2020-11-29 18:25:06,088 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:06,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961086797] [2020-11-29 18:25:06,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:06,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 18:25:06,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620683769] [2020-11-29 18:25:06,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:25:06,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:06,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:25:06,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:25:06,091 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 6 states. [2020-11-29 18:25:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:06,621 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-11-29 18:25:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:25:06,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 18:25:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:06,624 INFO L225 Difference]: With dead ends: 52 [2020-11-29 18:25:06,624 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 18:25:06,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:25:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 18:25:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2020-11-29 18:25:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 18:25:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-11-29 18:25:06,643 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11 [2020-11-29 18:25:06,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:06,644 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-11-29 18:25:06,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:25:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-11-29 18:25:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 18:25:06,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:06,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:06,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 18:25:06,846 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:06,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:06,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1277140292, now seen corresponding path program 1 times [2020-11-29 18:25:06,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:06,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157625284] [2020-11-29 18:25:06,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:06,865 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:06,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994016964] [2020-11-29 18:25:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:06,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 18:25:06,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:06,979 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:25:06,980 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:07,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157625284] [2020-11-29 18:25:07,030 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:07,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994016964] [2020-11-29 18:25:07,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:07,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 18:25:07,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555935411] [2020-11-29 18:25:07,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:25:07,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:07,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:25:07,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:25:07,033 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 6 states. [2020-11-29 18:25:07,330 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2020-11-29 18:25:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:07,482 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-11-29 18:25:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:25:07,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 18:25:07,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:07,484 INFO L225 Difference]: With dead ends: 69 [2020-11-29 18:25:07,484 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 18:25:07,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:25:07,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 18:25:07,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-11-29 18:25:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 18:25:07,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-11-29 18:25:07,496 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2020-11-29 18:25:07,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:07,497 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-11-29 18:25:07,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:25:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-11-29 18:25:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 18:25:07,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:07,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:07,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:07,701 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:07,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1834773734, now seen corresponding path program 1 times [2020-11-29 18:25:07,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:07,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721766577] [2020-11-29 18:25:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:07,720 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:07,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106236988] [2020-11-29 18:25:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:07,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 18:25:07,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:07,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721766577] [2020-11-29 18:25:07,860 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:07,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106236988] [2020-11-29 18:25:07,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:07,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:25:07,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787294937] [2020-11-29 18:25:07,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:25:07,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:25:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:25:07,863 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 4 states. [2020-11-29 18:25:08,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:08,040 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-11-29 18:25:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:25:08,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-29 18:25:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:08,043 INFO L225 Difference]: With dead ends: 95 [2020-11-29 18:25:08,043 INFO L226 Difference]: Without dead ends: 89 [2020-11-29 18:25:08,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:25:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-29 18:25:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-11-29 18:25:08,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 18:25:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-11-29 18:25:08,093 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 16 [2020-11-29 18:25:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:08,095 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-11-29 18:25:08,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:25:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-11-29 18:25:08,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 18:25:08,097 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:08,097 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] [2020-11-29 18:25:08,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:08,312 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:08,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:08,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1756992684, now seen corresponding path program 1 times [2020-11-29 18:25:08,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:08,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241496976] [2020-11-29 18:25:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:08,341 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:08,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057019263] [2020-11-29 18:25:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:08,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 18:25:08,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:08,440 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:25:08,440 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:08,466 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:08,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241496976] [2020-11-29 18:25:08,504 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:08,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057019263] [2020-11-29 18:25:08,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:08,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 18:25:08,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699658238] [2020-11-29 18:25:08,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:25:08,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:08,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:25:08,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:25:08,509 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 6 states. [2020-11-29 18:25:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:08,701 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-11-29 18:25:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:25:08,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-29 18:25:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:08,703 INFO L225 Difference]: With dead ends: 72 [2020-11-29 18:25:08,703 INFO L226 Difference]: Without dead ends: 70 [2020-11-29 18:25:08,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:25:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-29 18:25:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-29 18:25:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 18:25:08,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-11-29 18:25:08,721 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 20 [2020-11-29 18:25:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:08,722 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-11-29 18:25:08,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:25:08,722 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-11-29 18:25:08,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 18:25:08,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:08,723 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] [2020-11-29 18:25:08,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:08,937 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:08,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:08,937 INFO L82 PathProgramCache]: Analyzing trace with hash 746982291, now seen corresponding path program 1 times [2020-11-29 18:25:08,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:08,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499271028] [2020-11-29 18:25:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:08,954 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:08,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689295531] [2020-11-29 18:25:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:09,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 18:25:09,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:09,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499271028] [2020-11-29 18:25:09,102 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:09,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689295531] [2020-11-29 18:25:09,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:25:09,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 18:25:09,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140764175] [2020-11-29 18:25:09,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:25:09,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:09,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:25:09,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:25:09,104 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 5 states. [2020-11-29 18:25:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:09,342 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-11-29 18:25:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:25:09,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-29 18:25:09,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:09,347 INFO L225 Difference]: With dead ends: 123 [2020-11-29 18:25:09,352 INFO L226 Difference]: Without dead ends: 117 [2020-11-29 18:25:09,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:25:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-29 18:25:09,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-11-29 18:25:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-29 18:25:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-11-29 18:25:09,368 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 25 [2020-11-29 18:25:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:09,369 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-11-29 18:25:09,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:25:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-11-29 18:25:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 18:25:09,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:09,370 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] [2020-11-29 18:25:09,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 18:25:09,570 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:09,571 INFO L82 PathProgramCache]: Analyzing trace with hash 23956023, now seen corresponding path program 1 times [2020-11-29 18:25:09,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:09,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350577868] [2020-11-29 18:25:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:09,587 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:09,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501120763] [2020-11-29 18:25:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/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 [2020-11-29 18:25:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:09,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 18:25:09,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:09,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350577868] [2020-11-29 18:25:09,735 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:09,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501120763] [2020-11-29 18:25:09,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:25:09,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 18:25:09,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361449598] [2020-11-29 18:25:09,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:25:09,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:09,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:25:09,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:25:09,738 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 6 states. [2020-11-29 18:25:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:09,977 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2020-11-29 18:25:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:25:09,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-29 18:25:09,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:09,980 INFO L225 Difference]: With dead ends: 140 [2020-11-29 18:25:09,980 INFO L226 Difference]: Without dead ends: 132 [2020-11-29 18:25:09,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:25:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-29 18:25:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 101. [2020-11-29 18:25:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-29 18:25:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-11-29 18:25:10,017 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 26 [2020-11-29 18:25:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:10,018 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-11-29 18:25:10,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:25:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-11-29 18:25:10,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 18:25:10,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:10,021 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:10,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:10,236 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:10,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:10,237 INFO L82 PathProgramCache]: Analyzing trace with hash -722493562, now seen corresponding path program 2 times [2020-11-29 18:25:10,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:10,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010192579] [2020-11-29 18:25:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:10,265 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:10,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910044073] [2020-11-29 18:25:10,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/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 [2020-11-29 18:25:10,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:25:10,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:25:10,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 18:25:10,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:10,371 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:25:10,371 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:10,502 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:25:10,502 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:10,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:10,709 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:10,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:10,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010192579] [2020-11-29 18:25:10,843 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:10,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910044073] [2020-11-29 18:25:10,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:25:10,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 18:25:10,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677347873] [2020-11-29 18:25:10,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:25:10,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:10,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:25:10,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:25:10,845 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 10 states. [2020-11-29 18:25:11,494 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-11-29 18:25:12,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:12,425 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2020-11-29 18:25:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 18:25:12,427 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-11-29 18:25:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:12,430 INFO L225 Difference]: With dead ends: 168 [2020-11-29 18:25:12,430 INFO L226 Difference]: Without dead ends: 162 [2020-11-29 18:25:12,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-11-29 18:25:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-29 18:25:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 119. [2020-11-29 18:25:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-29 18:25:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2020-11-29 18:25:12,473 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 34 [2020-11-29 18:25:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:12,474 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2020-11-29 18:25:12,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:25:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2020-11-29 18:25:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 18:25:12,482 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:12,482 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] [2020-11-29 18:25:12,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:12,696 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:12,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:12,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1714844836, now seen corresponding path program 1 times [2020-11-29 18:25:12,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:12,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744426091] [2020-11-29 18:25:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:12,709 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:12,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869525099] [2020-11-29 18:25:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/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 [2020-11-29 18:25:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:12,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-29 18:25:12,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:12,839 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:25:12,839 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:13,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744426091] [2020-11-29 18:25:13,004 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:13,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869525099] [2020-11-29 18:25:13,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:25:13,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 18:25:13,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90070462] [2020-11-29 18:25:13,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 18:25:13,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:13,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 18:25:13,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:25:13,006 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand 11 states. [2020-11-29 18:25:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:13,662 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2020-11-29 18:25:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 18:25:13,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-11-29 18:25:13,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:13,665 INFO L225 Difference]: With dead ends: 210 [2020-11-29 18:25:13,665 INFO L226 Difference]: Without dead ends: 202 [2020-11-29 18:25:13,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-11-29 18:25:13,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-29 18:25:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 128. [2020-11-29 18:25:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 18:25:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2020-11-29 18:25:13,704 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 35 [2020-11-29 18:25:13,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:13,705 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2020-11-29 18:25:13,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 18:25:13,705 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2020-11-29 18:25:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 18:25:13,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:13,707 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:13,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 18:25:13,920 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:13,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:13,921 INFO L82 PathProgramCache]: Analyzing trace with hash 810001052, now seen corresponding path program 2 times [2020-11-29 18:25:13,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:13,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579955022] [2020-11-29 18:25:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:13,935 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:13,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208343809] [2020-11-29 18:25:13,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/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 [2020-11-29 18:25:13,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:25:14,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:25:14,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:25:14,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:14,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579955022] [2020-11-29 18:25:14,058 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:14,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208343809] [2020-11-29 18:25:14,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:14,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:25:14,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922660910] [2020-11-29 18:25:14,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:25:14,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:14,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:25:14,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:25:14,060 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand 5 states. [2020-11-29 18:25:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:14,165 INFO L93 Difference]: Finished difference Result 241 states and 268 transitions. [2020-11-29 18:25:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:25:14,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-29 18:25:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:14,167 INFO L225 Difference]: With dead ends: 241 [2020-11-29 18:25:14,167 INFO L226 Difference]: Without dead ends: 142 [2020-11-29 18:25:14,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:25:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-29 18:25:14,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-11-29 18:25:14,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 18:25:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2020-11-29 18:25:14,212 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 39 [2020-11-29 18:25:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:14,214 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2020-11-29 18:25:14,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:25:14,215 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2020-11-29 18:25:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 18:25:14,219 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:14,220 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:14,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:14,433 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:14,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:14,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1605251853, now seen corresponding path program 3 times [2020-11-29 18:25:14,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:14,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940877724] [2020-11-29 18:25:14,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:14,446 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:14,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118336107] [2020-11-29 18:25:14,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/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 [2020-11-29 18:25:14,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 18:25:14,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:25:14,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 18:25:14,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:14,571 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:25:14,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:19,065 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 18:25:25,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940877724] [2020-11-29 18:25:25,196 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:25,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118336107] [2020-11-29 18:25:25,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:25:25,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 18:25:25,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044312636] [2020-11-29 18:25:25,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:25:25,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:25,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:25:25,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-11-29 18:25:25,198 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand 6 states. [2020-11-29 18:25:31,398 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 18:25:39,747 WARN L193 SmtUtils]: Spent 8.33 s on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-11-29 18:25:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:56,826 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2020-11-29 18:25:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:25:56,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-11-29 18:25:56,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:56,831 INFO L225 Difference]: With dead ends: 142 [2020-11-29 18:25:56,831 INFO L226 Difference]: Without dead ends: 136 [2020-11-29 18:25:56,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=31, Invalid=55, Unknown=4, NotChecked=0, Total=90 [2020-11-29 18:25:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-29 18:25:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 87. [2020-11-29 18:25:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 18:25:56,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-11-29 18:25:56,849 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 43 [2020-11-29 18:25:56,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:56,849 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-11-29 18:25:56,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:25:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-11-29 18:25:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 18:25:56,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:56,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:57,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:57,061 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:57,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:57,061 INFO L82 PathProgramCache]: Analyzing trace with hash 119141591, now seen corresponding path program 2 times [2020-11-29 18:25:57,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:57,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074596853] [2020-11-29 18:25:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:57,076 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:57,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370272054] [2020-11-29 18:25:57,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:57,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:25:57,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:25:57,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-29 18:25:57,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:57,172 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 18:25:57,172 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:58,595 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 18:25:58,598 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:25:58,598 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:59,073 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 18:25:59,360 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 18:25:59,639 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 18:26:00,116 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-11-29 18:26:01,456 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-11-29 18:26:01,672 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:01,678 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:01,682 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:01,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:01,692 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:01,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:01,702 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:01,706 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:02,051 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2020-11-29 18:26:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:26:02,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074596853] [2020-11-29 18:26:02,160 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:26:02,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370272054] [2020-11-29 18:26:02,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:26:02,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-29 18:26:02,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166455711] [2020-11-29 18:26:02,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 18:26:02,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:26:02,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 18:26:02,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:26:02,162 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 16 states. [2020-11-29 18:26:04,304 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2020-11-29 18:26:05,056 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2020-11-29 18:26:05,675 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-11-29 18:26:06,557 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-29 18:26:07,022 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-29 18:26:08,178 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-11-29 18:26:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:26:09,863 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2020-11-29 18:26:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 18:26:09,864 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-11-29 18:26:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:26:09,865 INFO L225 Difference]: With dead ends: 143 [2020-11-29 18:26:09,865 INFO L226 Difference]: Without dead ends: 135 [2020-11-29 18:26:09,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2020-11-29 18:26:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-29 18:26:09,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 96. [2020-11-29 18:26:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 18:26:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-11-29 18:26:09,883 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 44 [2020-11-29 18:26:09,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:26:09,883 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-11-29 18:26:09,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 18:26:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-11-29 18:26:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 18:26:09,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:26:09,884 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:26:10,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 18:26:10,100 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:26:10,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:26:10,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1237724849, now seen corresponding path program 3 times [2020-11-29 18:26:10,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:26:10,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714101403] [2020-11-29 18:26:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:26:10,110 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:26:10,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171676629] [2020-11-29 18:26:10,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:26:10,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 18:26:10,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:26:10,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 18:26:10,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:26:10,245 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:26:10,245 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 18:26:10,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714101403] [2020-11-29 18:26:10,355 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:26:10,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171676629] [2020-11-29 18:26:10,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:26:10,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 18:26:10,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988185242] [2020-11-29 18:26:10,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:26:10,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:26:10,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:26:10,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:26:10,357 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 7 states. [2020-11-29 18:26:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:26:14,397 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2020-11-29 18:26:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 18:26:14,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-11-29 18:26:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:26:14,400 INFO L225 Difference]: With dead ends: 110 [2020-11-29 18:26:14,400 INFO L226 Difference]: Without dead ends: 96 [2020-11-29 18:26:14,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:26:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-29 18:26:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 78. [2020-11-29 18:26:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-29 18:26:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-11-29 18:26:14,420 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 48 [2020-11-29 18:26:14,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:26:14,420 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-11-29 18:26:14,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:26:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-11-29 18:26:14,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-29 18:26:14,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:26:14,422 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:26:14,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 18:26:14,636 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:26:14,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:26:14,637 INFO L82 PathProgramCache]: Analyzing trace with hash 415759876, now seen corresponding path program 4 times [2020-11-29 18:26:14,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:26:14,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132148522] [2020-11-29 18:26:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:26:14,648 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:26:14,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460554648] [2020-11-29 18:26:14,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:26:14,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:26:14,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:26:14,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 18:26:14,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:26:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:26:15,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132148522] [2020-11-29 18:26:15,599 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:26:15,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460554648] [2020-11-29 18:26:15,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:26:15,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 18:26:15,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871157918] [2020-11-29 18:26:15,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 18:26:15,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:26:15,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 18:26:15,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:26:15,602 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 11 states. [2020-11-29 18:26:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:26:17,986 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2020-11-29 18:26:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 18:26:17,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-11-29 18:26:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:26:17,992 INFO L225 Difference]: With dead ends: 133 [2020-11-29 18:26:17,992 INFO L226 Difference]: Without dead ends: 125 [2020-11-29 18:26:17,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-11-29 18:26:17,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-29 18:26:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 87. [2020-11-29 18:26:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 18:26:18,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-11-29 18:26:18,014 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 53 [2020-11-29 18:26:18,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:26:18,015 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-11-29 18:26:18,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 18:26:18,015 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-11-29 18:26:18,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-29 18:26:18,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:26:18,016 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:26:18,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 18:26:18,244 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:26:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:26:18,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1674794868, now seen corresponding path program 5 times [2020-11-29 18:26:18,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:26:18,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864767836] [2020-11-29 18:26:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:26:18,256 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:26:18,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253682082] [2020-11-29 18:26:18,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:26:18,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-29 18:26:18,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:26:18,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:26:18,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:26:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:26:18,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864767836] [2020-11-29 18:26:18,717 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:26:18,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253682082] [2020-11-29 18:26:18,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:26:18,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 18:26:18,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338511890] [2020-11-29 18:26:18,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:26:18,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:26:18,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:26:18,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:26:18,719 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 7 states. [2020-11-29 18:26:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:26:20,977 INFO L93 Difference]: Finished difference Result 159 states and 165 transitions. [2020-11-29 18:26:20,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:26:20,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-11-29 18:26:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:26:20,984 INFO L225 Difference]: With dead ends: 159 [2020-11-29 18:26:20,984 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 18:26:20,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:26:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 18:26:21,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 106. [2020-11-29 18:26:21,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-29 18:26:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-11-29 18:26:21,011 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 57 [2020-11-29 18:26:21,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:26:21,012 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-11-29 18:26:21,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:26:21,012 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-11-29 18:26:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 18:26:21,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:26:21,013 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:26:21,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:26:21,229 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:26:21,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:26:21,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1866664073, now seen corresponding path program 6 times [2020-11-29 18:26:21,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:26:21,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020307614] [2020-11-29 18:26:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:26:21,238 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:26:21,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022031163] [2020-11-29 18:26:21,245 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:26:21,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-29 18:26:21,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:26:21,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 18:26:21,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:26:21,382 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:26:21,383 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-11-29 18:26:21,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020307614] [2020-11-29 18:26:21,448 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:26:21,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022031163] [2020-11-29 18:26:21,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:26:21,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 18:26:21,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024424041] [2020-11-29 18:26:21,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:26:21,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:26:21,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:26:21,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:26:21,449 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 7 states. [2020-11-29 18:26:22,010 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 18:26:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:26:22,295 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2020-11-29 18:26:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 18:26:22,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-11-29 18:26:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:26:22,297 INFO L225 Difference]: With dead ends: 125 [2020-11-29 18:26:22,297 INFO L226 Difference]: Without dead ends: 110 [2020-11-29 18:26:22,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:26:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-29 18:26:22,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81. [2020-11-29 18:26:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-29 18:26:22,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-11-29 18:26:22,320 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 62 [2020-11-29 18:26:22,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:26:22,320 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-11-29 18:26:22,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:26:22,321 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-11-29 18:26:22,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 18:26:22,321 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:26:22,322 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:26:22,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 18:26:22,536 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:26:22,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:26:22,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1252937601, now seen corresponding path program 7 times [2020-11-29 18:26:22,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:26:22,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125843001] [2020-11-29 18:26:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:26:22,561 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:26:22,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111664114] [2020-11-29 18:26:22,561 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:26:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:26:22,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-29 18:26:22,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:26:23,559 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 18:26:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:26:23,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125843001] [2020-11-29 18:26:23,884 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:26:23,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111664114] [2020-11-29 18:26:23,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:26:23,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-29 18:26:23,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819190043] [2020-11-29 18:26:23,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 18:26:23,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:26:23,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 18:26:23,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:26:23,886 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 13 states. [2020-11-29 18:26:26,119 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 18:26:26,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:26:26,554 INFO L93 Difference]: Finished difference Result 158 states and 165 transitions. [2020-11-29 18:26:26,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 18:26:26,555 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-11-29 18:26:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:26:26,556 INFO L225 Difference]: With dead ends: 158 [2020-11-29 18:26:26,556 INFO L226 Difference]: Without dead ends: 93 [2020-11-29 18:26:26,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-11-29 18:26:26,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-29 18:26:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2020-11-29 18:26:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-29 18:26:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2020-11-29 18:26:26,575 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 66 [2020-11-29 18:26:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:26:26,575 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2020-11-29 18:26:26,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 18:26:26,575 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2020-11-29 18:26:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-29 18:26:26,576 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:26:26,576 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:26:26,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 18:26:26,792 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:26:26,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:26:26,793 INFO L82 PathProgramCache]: Analyzing trace with hash -107288084, now seen corresponding path program 8 times [2020-11-29 18:26:26,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:26:26,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674310046] [2020-11-29 18:26:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:26:26,801 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:26:26,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899315231] [2020-11-29 18:26:26,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:26:26,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:26:26,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:26:26,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 66 conjunts are in the unsatisfiable core [2020-11-29 18:26:26,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:26:26,901 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:26:26,901 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:30,187 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 32 [2020-11-29 18:26:30,188 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:26:30,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:31,107 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 17 [2020-11-29 18:26:31,965 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 18:26:32,641 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 18:26:33,072 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 18:26:34,598 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 34 [2020-11-29 18:26:34,600 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:26:34,600 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:26:35,330 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 18:26:36,559 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 18:26:37,641 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 18:26:43,809 WARN L193 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-11-29 18:26:45,200 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-11-29 18:26:46,630 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 18:26:46,698 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-29 18:26:46,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-11-29 18:27:01,335 WARN L193 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-11-29 18:27:01,364 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:27:14,244 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 72 [2020-11-29 18:27:14,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:27:14,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:14,423 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:14,474 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:14,565 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:14,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:14,700 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:14,739 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 18:27:14,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:27:14,786 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:14,842 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:14,894 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:14,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:15,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:15,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 18:27:46,031 WARN L193 SmtUtils]: Spent 30.88 s on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-11-29 18:27:59,570 WARN L193 SmtUtils]: Spent 13.54 s on a formula simplification that was a NOOP. DAG size: 62 [2020-11-29 18:28:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:28:00,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674310046] [2020-11-29 18:28:00,570 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:28:00,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899315231] [2020-11-29 18:28:00,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:28:00,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-11-29 18:28:00,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484762873] [2020-11-29 18:28:00,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-29 18:28:00,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:28:00,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-29 18:28:00,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=418, Unknown=4, NotChecked=0, Total=506 [2020-11-29 18:28:00,572 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 23 states. [2020-11-29 18:28:04,684 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2020-11-29 18:28:09,292 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-11-29 18:28:20,674 WARN L193 SmtUtils]: Spent 6.51 s on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-11-29 18:28:23,679 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2020-11-29 18:28:26,914 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-11-29 18:28:31,170 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-11-29 18:28:47,059 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-11-29 18:28:57,091 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-11-29 18:29:02,120 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-11-29 18:29:13,815 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2020-11-29 18:29:20,802 WARN L193 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-11-29 18:29:30,418 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-11-29 18:29:37,138 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-11-29 18:29:51,722 WARN L193 SmtUtils]: Spent 11.96 s on a formula simplification. DAG size of input: 112 DAG size of output: 93 [2020-11-29 18:30:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:02,690 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2020-11-29 18:30:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 18:30:02,691 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 75 [2020-11-29 18:30:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:02,691 INFO L225 Difference]: With dead ends: 141 [2020-11-29 18:30:02,691 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:30:02,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 92.7s TimeCoverageRelationStatistics Valid=286, Invalid=1431, Unknown=5, NotChecked=0, Total=1722 [2020-11-29 18:30:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:30:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:30:02,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:30:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:30:02,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2020-11-29 18:30:02,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:02,693 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:30:02,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-29 18:30:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:30:02,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:30:02,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 18:30:02,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 18:30:03,164 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 153 [2020-11-29 18:30:03,354 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 152 [2020-11-29 18:30:03,714 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 160 [2020-11-29 18:30:03,880 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2020-11-29 18:30:04,217 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 151 [2020-11-29 18:30:40,501 WARN L193 SmtUtils]: Spent 36.21 s on a formula simplification. DAG size of input: 150 DAG size of output: 36 [2020-11-29 18:31:13,462 WARN L193 SmtUtils]: Spent 32.96 s on a formula simplification. DAG size of input: 148 DAG size of output: 36 [2020-11-29 18:32:07,598 WARN L193 SmtUtils]: Spent 54.13 s on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2020-11-29 18:32:36,894 WARN L193 SmtUtils]: Spent 29.29 s on a formula simplification. DAG size of input: 151 DAG size of output: 59 [2020-11-29 18:33:21,819 WARN L193 SmtUtils]: Spent 44.92 s on a formula simplification. DAG size of input: 147 DAG size of output: 37 [2020-11-29 18:34:08,088 WARN L193 SmtUtils]: Spent 46.27 s on a formula simplification. DAG size of input: 175 DAG size of output: 51 [2020-11-29 18:34:46,921 WARN L193 SmtUtils]: Spent 38.83 s on a formula simplification. DAG size of input: 146 DAG size of output: 37 [2020-11-29 18:35:27,025 WARN L193 SmtUtils]: Spent 40.10 s on a formula simplification. DAG size of input: 146 DAG size of output: 66 [2020-11-29 18:35:27,028 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 18:35:27,028 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-29 18:35:27,028 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-11-29 18:35:27,028 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2020-11-29 18:35:27,028 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 18:35:27,029 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 18:35:27,029 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 18:35:27,029 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 18:35:27,029 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 18:35:27,029 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-29 18:35:27,029 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 18:35:27,029 INFO L270 CegarLoopResult]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse11 (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0)) (.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse9 (* ULTIMATE.start_main_~y~0 2))) (let ((.cse10 (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~a~0 2) .cse2 (= ULTIMATE.start_main_~b~0 .cse9)))) (.cse1 (= ULTIMATE.start_main_~b~0 (* .cse11 2))) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0))) (let ((.cse7 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse8 (or (and .cse4 .cse10) (and .cse0 .cse1 (= .cse11 .cse9) .cse2 .cse4 .cse5))) (.cse3 (<= 0 ULTIMATE.start_main_~x~0)) (.cse6 (<= ULTIMATE.start_main_~x~0 20))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) .cse6) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) .cse7 .cse3 .cse6 .cse8) (and (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse7 (or (and (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse9)) .cse8 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse4 .cse10))) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) .cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse4 .cse6 (= ULTIMATE.start_main_~b~0 0)))))) [2020-11-29 18:35:27,029 INFO L274 CegarLoopResult]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2020-11-29 18:35:27,029 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 18:35:27,030 INFO L270 CegarLoopResult]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse5 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 0 ULTIMATE.start_main_~x~0)) (.cse8 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= ULTIMATE.start_main_~x~0 20))) (or (and .cse0 .cse1 .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse4 .cse5 .cse6 .cse7) (and (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) (or (and (or (and (= ULTIMATE.start_main_~q~0 1) .cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse8 .cse4) (and .cse0 (= ULTIMATE.start_main_~q~0 2) .cse8 .cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))))) .cse5 .cse6 .cse7) (and .cse0 (= ULTIMATE.start_main_~q~0 8) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 8))) .cse8 .cse4 .cse5 .cse6 .cse7))) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse3 .cse8 .cse4 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse7))) [2020-11-29 18:35:27,030 INFO L274 CegarLoopResult]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2020-11-29 18:35:27,030 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 18:35:27,030 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-29 18:35:27,030 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 0 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse5 (<= ULTIMATE.start_main_~x~0 20)) (.cse6 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse1 .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4 .cse5) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) .cse0 .cse1 .cse6 .cse2 .cse3 .cse4 .cse7 .cse5) (and (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse6 (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse3 (<= ULTIMATE.start_main_~a~0 1) .cse7) (and (= ULTIMATE.start_main_~q~0 2) .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)))))) [2020-11-29 18:35:27,030 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-29 18:35:27,030 INFO L270 CegarLoopResult]: At program point L15-3(lines 42 43) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse11 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 0 ULTIMATE.start_main_~x~0)) (.cse5 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (.cse6 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse7 (<= ULTIMATE.start_main_~x~0 20)) (.cse8 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse10 (or (and (= ULTIMATE.start_main_~q~0 2) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse11 .cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse1 .cse11 .cse4 (<= ULTIMATE.start_main_~a~0 1) .cse9)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 .cse8 .cse3 .cse4 .cse6 .cse9 .cse7) (and (or (and .cse5 .cse10 .cse6 .cse7) (and (= ULTIMATE.start_main_~q~0 8) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 8))) .cse11 (<= (* 8 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse4 .cse5 .cse6 .cse7)) (<= (+ (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2) 1) ULTIMATE.start_main_~y~0) (< (+ (div (+ ULTIMATE.start_main_~r~0 (- 2)) 2) 1) ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse8 .cse10)))) [2020-11-29 18:35:27,031 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-29 18:35:27,031 INFO L270 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 0 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse7 (<= ULTIMATE.start_main_~x~0 20))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse7) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse3 .cse4 .cse5 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse6 .cse7))) [2020-11-29 18:35:27,031 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-29 18:35:27,031 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 0 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse7 (<= ULTIMATE.start_main_~x~0 20))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse7) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse3 .cse4 .cse5 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse6 .cse7))) [2020-11-29 18:35:27,031 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-29 18:35:27,031 INFO L270 CegarLoopResult]: At program point L15-9(lines 52 53) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= 0 ULTIMATE.start_main_~x~0)) (.cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse7 (<= ULTIMATE.start_main_~x~0 20))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse7) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse4 .cse3 .cse5 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse6 .cse7))) [2020-11-29 18:35:27,031 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-29 18:35:27,032 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 0 ULTIMATE.start_main_~x~0) (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) (<= ULTIMATE.start_main_~x~0 20)) [2020-11-29 18:35:27,032 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-29 18:35:27,032 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-29 18:35:27,032 INFO L277 CegarLoopResult]: At program point L65(lines 22 66) the Hoare annotation is: true [2020-11-29 18:35:27,032 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 18:35:27,032 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 18:35:27,032 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-29 18:35:27,032 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-29 18:35:27,032 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-29 18:35:27,032 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-29 18:35:27,033 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-29 18:35:27,033 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-29 18:35:27,033 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-29 18:35:27,033 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 18:35:27,033 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 18:35:27,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:35:27 BoogieIcfgContainer [2020-11-29 18:35:27,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:35:27,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:35:27,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:35:27,091 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:35:27,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:25:05" (3/4) ... [2020-11-29 18:35:27,100 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:35:27,115 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-29 18:35:27,116 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 18:35:27,116 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:35:27,117 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:35:27,174 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fba376d2-50a1-49c6-baf0-45d031fede81/bin/uautomizer/witness.graphml [2020-11-29 18:35:27,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:35:27,176 INFO L168 Benchmark]: Toolchain (without parser) took 622927.30 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 90.5 MB in the beginning and 79.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:27,176 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:35:27,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.17 ms. Allocated memory is still 119.5 MB. Free memory was 90.2 MB in the beginning and 95.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:27,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.72 ms. Allocated memory is still 119.5 MB. Free memory was 95.5 MB in the beginning and 93.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:27,177 INFO L168 Benchmark]: Boogie Preprocessor took 52.28 ms. Allocated memory is still 119.5 MB. Free memory was 93.8 MB in the beginning and 92.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:35:27,177 INFO L168 Benchmark]: RCFGBuilder took 697.11 ms. Allocated memory is still 119.5 MB. Free memory was 92.3 MB in the beginning and 75.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:27,178 INFO L168 Benchmark]: TraceAbstraction took 621679.41 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 75.5 MB in the beginning and 83.4 MB in the end (delta: -7.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:27,178 INFO L168 Benchmark]: Witness Printer took 84.34 ms. Allocated memory is still 174.1 MB. Free memory was 83.4 MB in the beginning and 79.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:35:27,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.17 ms. Allocated memory is still 119.5 MB. Free memory was 90.2 MB in the beginning and 95.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.72 ms. Allocated memory is still 119.5 MB. Free memory was 95.5 MB in the beginning and 93.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.28 ms. Allocated memory is still 119.5 MB. Free memory was 93.8 MB in the beginning and 92.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 697.11 ms. Allocated memory is still 119.5 MB. Free memory was 92.3 MB in the beginning and 75.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 621679.41 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 75.5 MB in the beginning and 83.4 MB in the end (delta: -7.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 16.1 GB. * Witness Printer took 84.34 ms. Allocated memory is still 174.1 MB. Free memory was 83.4 MB in the beginning and 79.3 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: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((1 <= r && x == r + q * y) && 1 <= y) && 1 == cond) && 0 <= x) && cond == 1) && b == a * y) && b == y) && x <= 20) || (((((((((1 <= r && x == r + q * y) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && 0 <= x) && cond == 1) && a % -2 == 0) && b == a * y) && x <= 20) - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((((((((1 <= r && x == r + q * y) && 1 <= y) && 1 <= cond) && 0 <= x) && cond == 1) && b == a * y) && b == y) && x <= 20) || (((((((((1 <= r && x == r + q * y) && 1 <= y) && b == a * -1 / -2 * y * 2) && 0 <= x) && 1 <= cond) && cond == 1) && a % -2 == 0) && b == a * y) && x <= 20) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((((((x == r + q * y && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && 0 <= x) && cond == 1) && a % -2 == 0) && b == a * y) && x <= 20) || ((((((((x == r + q * y && 1 <= y) && 1 == cond) && r < y) && 0 <= x) && cond == 1) && b == a * y) && b == y) && x <= 20)) || ((((((a % -2 == 0 && ((((((q == 2 && 2 * r < x) && 1 <= cond) && cond == 1) && x == r + y * 2) && 2 * y <= x) || ((((((q == 1 && x == r + y) && 1 <= y) && 1 <= cond) && cond == 1) && a <= 1) && b == y))) && b == a * y) && x <= 20) || (((((((q == 8 && x == r + y * 8) && 1 <= cond) && 8 * y <= x) && cond == 1) && a % -2 == 0) && b == a * y) && x <= 20)) && (b + -1) / 2 + 1 <= y) && (r + -2) / 2 + 1 < y)) || ((b <= y && r < y) && ((((((q == 2 && 2 * r < x) && 1 <= cond) && cond == 1) && x == r + y * 2) && 2 * y <= x) || ((((((q == 1 && x == r + y) && 1 <= y) && 1 <= cond) && cond == 1) && a <= 1) && b == y))) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((1 <= r && x == r + q * y) && 1 <= y) && 1 == cond) && 0 <= x) && cond == 1) && b == a * y) && b == y) && x <= 20) || (r < 2 * b && (((((((((q == 1 && 1 <= r) && x == r + y) && 1 <= cond) && cond == 1) || ((((1 <= r && q == 2) && 1 <= cond) && cond == 1) && x == r + y * 2)) && b == a * y) && b == y) && x <= 20) || (((((((1 <= r && q == 8) && x == r + y * 8) && 1 <= cond) && cond == 1) && b == a * y) && b == y) && x <= 20)))) || ((((((((1 <= r && x == r + q * y) && 1 <= y) && b == a * -1 / -2 * y * 2) && 0 <= x) && 1 <= cond) && cond == 1) && a % -2 == 0) && x <= 20) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((1 <= r && x == r + q * y) && 1 <= y) && 1 == cond) && 0 <= x) && cond == 1) && b == a * y) && b == y) && x <= 20) || (((((((((1 <= r && x == r + q * y) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && 0 <= x) && cond == 1) && a % -2 == 0) && b == a * y) && x <= 20) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((1 <= y && b == a * -1 / -2 * y * 2) && 1 == cond) && 0 <= x) && cond == 1) && a % -2 == 0) && b == a * y) && x <= 20) || ((((((((x == r + q * y && 1 <= y) && 1 == cond) && r < y) && 0 <= x) && cond == 1) && b == a * y) && b == y) && x <= 20)) || ((b <= y && r < y) && ((((((q == 1 && x == r + y) && 1 <= y) && cond == 1) && a <= 1) && b == y) || (((q == 2 && cond == 1) && x == r + y * 2) && 2 * y <= x))) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((x == r + q * y && 0 <= x) && (((((((1 <= r && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && cond == 1) && a % -2 == 0) && b == a * y) || (((((1 <= r && 1 <= y) && 1 == cond) && cond == 1) && b == a * y) && b == y))) && x <= 20 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((1 <= y && b == a * -1 / -2 * y * 2) && 1 <= cond) && 0 <= x) && cond == 1) && a % -2 == 0) && b == a * y) && x <= 20) || ((((x == r + q * y && r < y) && 0 <= x) && x <= 20) && ((cond == 1 && ((((1 <= y && a == 1) && 1 <= cond) && b == y) || (((1 <= y && a == 2) && 1 <= cond) && b == y * 2))) || (((((1 <= y && b == a * -1 / -2 * y * 2) && a * -1 / -2 * y == y * 2) && 1 <= cond) && cond == 1) && a % -2 == 0)))) || ((b <= y && r < y) && ((((q == 2 && x == r + y * 2) && ((cond == 1 && ((((1 <= y && a == 1) && 1 <= cond) && b == y) || (((1 <= y && a == 2) && 1 <= cond) && b == y * 2))) || (((((1 <= y && b == a * -1 / -2 * y * 2) && a * -1 / -2 * y == y * 2) && 1 <= cond) && cond == 1) && a % -2 == 0))) && 2 * y <= x) || (((q == 1 && x == r + y) && cond == 1) && ((((1 <= y && a == 1) && 1 <= cond) && b == y) || (((1 <= y && a == 2) && 1 <= cond) && b == y * 2)))))) || (((((((1 <= y && a == q) && 0 <= x) && r == x) && q == 0) && cond == 1) && x <= 20) && b == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 297.4s, OverallIterations: 18, TraceHistogramMax: 6, AutomataDifference: 177.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 324.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 509 SDtfs, 1278 SDslu, 1231 SDs, 0 SdLazy, 3564 SolverSat, 544 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 99.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 545 SyntacticMatches, 2 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 128.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 18 MinimizatonAttempts, 405 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 111 NumberOfFragments, 1150 HoareAnnotationTreeSize, 10 FomulaSimplifications, 1918137 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 10 FomulaSimplificationsInter, 284492 FormulaSimplificationTreeSizeReductionInter, 322.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 113.5s InterpolantComputationTime, 678 NumberOfCodeBlocks, 604 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 660 ConstructedInterpolants, 2 QuantifiedInterpolants, 419267 SizeOfPredicates, 147 NumberOfNonLiveVariables, 2211 ConjunctsInSsa, 363 ConjunctsInUnsatCore, 18 InterpolantComputations, 7 PerfectInterpolantSequences, 207/563 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...