./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/cohendiv-ll.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_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/cohendiv-ll.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 b788fa7bf5d3d7a61d9110a20b15d9957b4247ef .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:16:02,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:16:02,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:16:02,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:16:02,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:16:02,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:16:02,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:16:02,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:16:02,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:16:02,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:16:02,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:16:02,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:16:02,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:16:02,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:16:02,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:16:02,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:16:02,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:16:02,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:16:02,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:16:02,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:16:02,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:16:02,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:16:02,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:16:02,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:16:02,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:16:02,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:16:02,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:16:02,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:16:02,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:16:02,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:16:02,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:16:02,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:16:02,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:16:02,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:16:02,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:16:02,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:16:02,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:16:02,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:16:02,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:16:02,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:16:02,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:16:02,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:16:02,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:16:02,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:16:02,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:16:02,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:16:02,561 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:16:02,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:16:02,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:16:02,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:16:02,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:16:02,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:16:02,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:16:02,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:16:02,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:16:02,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:16:02,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:16:02,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:16:02,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:16:02,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:16:02,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:16:02,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:16:02,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:16:02,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:16:02,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:16:02,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:16:02,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:16:02,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:16:02,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:16:02,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:16:02,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:16:02,567 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_b76315ef-e12d-44e6-8056-432350cde3b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b788fa7bf5d3d7a61d9110a20b15d9957b4247ef [2020-11-30 01:16:02,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:16:02,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:16:02,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:16:02,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:16:02,894 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:16:02,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/cohendiv-ll.c [2020-11-30 01:16:02,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/data/94c3c3bf0/512aecb82bcc49d89e1dc6d1d4cdfdde/FLAGe3ff49eb5 [2020-11-30 01:16:03,549 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:16:03,549 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/sv-benchmarks/c/nla-digbench/cohendiv-ll.c [2020-11-30 01:16:03,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/data/94c3c3bf0/512aecb82bcc49d89e1dc6d1d4cdfdde/FLAGe3ff49eb5 [2020-11-30 01:16:03,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/data/94c3c3bf0/512aecb82bcc49d89e1dc6d1d4cdfdde [2020-11-30 01:16:03,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:16:03,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:16:03,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:16:03,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:16:03,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:16:03,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:16:03" (1/1) ... [2020-11-30 01:16:03,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a32fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:03, skipping insertion in model container [2020-11-30 01:16:03,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:16:03" (1/1) ... [2020-11-30 01:16:03,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:16:03,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:16:04,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:16:04,165 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:16:04,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:16:04,220 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:16:04,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04 WrapperNode [2020-11-30 01:16:04,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:16:04,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:16:04,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:16:04,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:16:04,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (1/1) ... [2020-11-30 01:16:04,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (1/1) ... [2020-11-30 01:16:04,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:16:04,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:16:04,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:16:04,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:16:04,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (1/1) ... [2020-11-30 01:16:04,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (1/1) ... [2020-11-30 01:16:04,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (1/1) ... [2020-11-30 01:16:04,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (1/1) ... [2020-11-30 01:16:04,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (1/1) ... [2020-11-30 01:16:04,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (1/1) ... [2020-11-30 01:16:04,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (1/1) ... [2020-11-30 01:16:04,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:16:04,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:16:04,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:16:04,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:16:04,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:16:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:16:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:16:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:16:04,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:16:04,682 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:16:04,682 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-30 01:16:04,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:04 BoogieIcfgContainer [2020-11-30 01:16:04,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:16:04,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:16:04,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:16:04,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:16:04,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:16:03" (1/3) ... [2020-11-30 01:16:04,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:16:04, skipping insertion in model container [2020-11-30 01:16:04,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:04" (2/3) ... [2020-11-30 01:16:04,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:16:04, skipping insertion in model container [2020-11-30 01:16:04,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:04" (3/3) ... [2020-11-30 01:16:04,717 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll.c [2020-11-30 01:16:04,728 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:16:04,736 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 01:16:04,751 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 01:16:04,775 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:16:04,775 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:16:04,776 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:16:04,776 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:16:04,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:16:04,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:16:04,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:16:04,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:16:04,792 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-30 01:16:04,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:16:04,797 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:04,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:04,799 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]=== [2020-11-30 01:16:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:04,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-30 01:16:04,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:04,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703882317] [2020-11-30 01:16:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:04,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703882317] [2020-11-30 01:16:04,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:04,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:16:04,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369165292] [2020-11-30 01:16:04,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:16:04,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:04,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:16:04,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:16:04,975 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-30 01:16:04,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:04,994 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2020-11-30 01:16:04,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:16:04,996 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 01:16:04,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:05,005 INFO L225 Difference]: With dead ends: 75 [2020-11-30 01:16:05,005 INFO L226 Difference]: Without dead ends: 35 [2020-11-30 01:16:05,008 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 [2020-11-30 01:16:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-30 01:16:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-30 01:16:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 01:16:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-11-30 01:16:05,073 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 7 [2020-11-30 01:16:05,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:05,074 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-11-30 01:16:05,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:16:05,075 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-11-30 01:16:05,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:16:05,076 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:05,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:05,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:16:05,084 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]=== [2020-11-30 01:16:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:05,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-30 01:16:05,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:05,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969701952] [2020-11-30 01:16:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:05,114 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:16:05,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675665449] [2020-11-30 01:16:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:16:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:05,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:16:05,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:05,282 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:16:05,284 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:05,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969701952] [2020-11-30 01:16:05,357 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:16:05,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675665449] [2020-11-30 01:16:05,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:05,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:16:05,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899140505] [2020-11-30 01:16:05,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:16:05,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:05,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:16:05,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:16:05,362 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 6 states. [2020-11-30 01:16:05,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:05,656 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-11-30 01:16:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:16:05,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-30 01:16:05,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:05,658 INFO L225 Difference]: With dead ends: 48 [2020-11-30 01:16:05,659 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 01:16:05,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:16:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 01:16:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2020-11-30 01:16:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 01:16:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-11-30 01:16:05,670 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 7 [2020-11-30 01:16:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:05,670 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-11-30 01:16:05,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:16:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-11-30 01:16:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:16:05,672 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:05,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:05,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 01:16:05,885 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]=== [2020-11-30 01:16:05,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:05,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-30 01:16:05,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:05,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694097685] [2020-11-30 01:16:05,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:05,911 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:16:05,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712673399] [2020-11-30 01:16:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:16:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:05,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:16:05,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:05,985 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:16:05,985 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:06,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694097685] [2020-11-30 01:16:06,034 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:16:06,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712673399] [2020-11-30 01:16:06,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:06,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:16:06,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825420401] [2020-11-30 01:16:06,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:16:06,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:06,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:16:06,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:16:06,052 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 6 states. [2020-11-30 01:16:06,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:06,280 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-11-30 01:16:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:16:06,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-30 01:16:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:06,283 INFO L225 Difference]: With dead ends: 65 [2020-11-30 01:16:06,284 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 01:16:06,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:16:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 01:16:06,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2020-11-30 01:16:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-30 01:16:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-11-30 01:16:06,297 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 9 [2020-11-30 01:16:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:06,297 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-11-30 01:16:06,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:16:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-11-30 01:16:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:16:06,299 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:06,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:06,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:16:06,516 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]=== [2020-11-30 01:16:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:06,517 INFO L82 PathProgramCache]: Analyzing trace with hash 339773570, now seen corresponding path program 1 times [2020-11-30 01:16:06,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:06,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732414604] [2020-11-30 01:16:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:06,530 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:16:06,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992291335] [2020-11-30 01:16:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:16:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:06,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:16:06,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:06,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732414604] [2020-11-30 01:16:06,617 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:16:06,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992291335] [2020-11-30 01:16:06,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:06,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:16:06,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828278221] [2020-11-30 01:16:06,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:16:06,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:06,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:16:06,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:16:06,619 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2020-11-30 01:16:06,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:06,762 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-11-30 01:16:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:16:06,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 01:16:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:06,767 INFO L225 Difference]: With dead ends: 91 [2020-11-30 01:16:06,767 INFO L226 Difference]: Without dead ends: 85 [2020-11-30 01:16:06,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:16:06,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-30 01:16:06,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2020-11-30 01:16:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-30 01:16:06,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2020-11-30 01:16:06,791 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 12 [2020-11-30 01:16:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:06,792 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2020-11-30 01:16:06,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:16:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2020-11-30 01:16:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:16:06,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:06,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:07,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:16:07,009 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]=== [2020-11-30 01:16:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:07,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2102923576, now seen corresponding path program 1 times [2020-11-30 01:16:07,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:07,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168289064] [2020-11-30 01:16:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:07,033 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:16:07,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691781864] [2020-11-30 01:16:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:16:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:07,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:16:07,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:07,120 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:16:07,120 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:07,146 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:07,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168289064] [2020-11-30 01:16:07,189 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:16:07,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691781864] [2020-11-30 01:16:07,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:07,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:16:07,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24624132] [2020-11-30 01:16:07,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:16:07,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:07,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:16:07,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:16:07,191 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand 6 states. [2020-11-30 01:16:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:07,374 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-11-30 01:16:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:16:07,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 01:16:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:07,376 INFO L225 Difference]: With dead ends: 68 [2020-11-30 01:16:07,376 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 01:16:07,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:16:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 01:16:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-30 01:16:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-30 01:16:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-11-30 01:16:07,387 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 16 [2020-11-30 01:16:07,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:07,388 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-11-30 01:16:07,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:16:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-11-30 01:16:07,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:16:07,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:07,389 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] [2020-11-30 01:16:07,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:16:07,594 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]=== [2020-11-30 01:16:07,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:07,594 INFO L82 PathProgramCache]: Analyzing trace with hash -629422487, now seen corresponding path program 1 times [2020-11-30 01:16:07,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:07,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923121792] [2020-11-30 01:16:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:07,605 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:16:07,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285424495] [2020-11-30 01:16:07,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:16:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:07,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 01:16:07,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:07,696 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:16:07,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:07,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:07,747 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:07,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923121792] [2020-11-30 01:16:07,771 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:16:07,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285424495] [2020-11-30 01:16:07,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:16:07,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 01:16:07,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917980405] [2020-11-30 01:16:07,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:16:07,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:07,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:16:07,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:16:07,773 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 7 states. [2020-11-30 01:16:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:08,205 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-11-30 01:16:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:16:08,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-30 01:16:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:08,207 INFO L225 Difference]: With dead ends: 119 [2020-11-30 01:16:08,207 INFO L226 Difference]: Without dead ends: 113 [2020-11-30 01:16:08,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:16:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-30 01:16:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 84. [2020-11-30 01:16:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-30 01:16:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-11-30 01:16:08,232 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 21 [2020-11-30 01:16:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:08,232 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-11-30 01:16:08,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:16:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-11-30 01:16:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:16:08,238 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:08,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:08,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 01:16:08,465 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]=== [2020-11-30 01:16:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash 305080851, now seen corresponding path program 1 times [2020-11-30 01:16:08,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:08,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470245504] [2020-11-30 01:16:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:08,481 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:16:08,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971545889] [2020-11-30 01:16:08,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:16:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:08,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 01:16:08,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:08,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470245504] [2020-11-30 01:16:08,655 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:16:08,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971545889] [2020-11-30 01:16:08,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:16:08,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 01:16:08,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117979601] [2020-11-30 01:16:08,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:16:08,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:08,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:16:08,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:16:08,657 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 7 states. [2020-11-30 01:16:08,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:08,884 INFO L93 Difference]: Finished difference Result 147 states and 162 transitions. [2020-11-30 01:16:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:16:08,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-30 01:16:08,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:08,887 INFO L225 Difference]: With dead ends: 147 [2020-11-30 01:16:08,889 INFO L226 Difference]: Without dead ends: 90 [2020-11-30 01:16:08,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:16:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-30 01:16:08,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2020-11-30 01:16:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-30 01:16:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-11-30 01:16:08,912 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 22 [2020-11-30 01:16:08,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:08,913 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-11-30 01:16:08,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:16:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-11-30 01:16:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:16:08,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:08,916 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] [2020-11-30 01:16:09,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:16:09,129 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]=== [2020-11-30 01:16:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:09,130 INFO L82 PathProgramCache]: Analyzing trace with hash -723895198, now seen corresponding path program 2 times [2020-11-30 01:16:09,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:09,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409683761] [2020-11-30 01:16:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:09,142 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:16:09,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067974855] [2020-11-30 01:16:09,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:16:09,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:16:09,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:16:09,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 01:16:09,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:09,279 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:16:09,280 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:09,348 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:09,350 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:09,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409683761] [2020-11-30 01:16:09,376 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:16:09,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067974855] [2020-11-30 01:16:09,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:16:09,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-30 01:16:09,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520687692] [2020-11-30 01:16:09,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:16:09,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:09,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:16:09,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:16:09,379 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 8 states. [2020-11-30 01:16:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:09,928 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2020-11-30 01:16:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:16:09,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-30 01:16:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:09,933 INFO L225 Difference]: With dead ends: 151 [2020-11-30 01:16:09,933 INFO L226 Difference]: Without dead ends: 145 [2020-11-30 01:16:09,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:16:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-30 01:16:09,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 102. [2020-11-30 01:16:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-30 01:16:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-11-30 01:16:09,977 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 30 [2020-11-30 01:16:09,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:09,983 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-11-30 01:16:09,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:16:09,983 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-11-30 01:16:09,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 01:16:09,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:09,987 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] [2020-11-30 01:16:10,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:16:10,205 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]=== [2020-11-30 01:16:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1671394106, now seen corresponding path program 1 times [2020-11-30 01:16:10,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:10,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733515454] [2020-11-30 01:16:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:10,218 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:16:10,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468128663] [2020-11-30 01:16:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:16:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:10,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 01:16:10,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:10,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733515454] [2020-11-30 01:16:10,473 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:16:10,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468128663] [2020-11-30 01:16:10,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:16:10,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-30 01:16:10,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459536343] [2020-11-30 01:16:10,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:16:10,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:10,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:16:10,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:16:10,475 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 9 states. [2020-11-30 01:16:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:10,907 INFO L93 Difference]: Finished difference Result 165 states and 182 transitions. [2020-11-30 01:16:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:16:10,908 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-11-30 01:16:10,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:10,909 INFO L225 Difference]: With dead ends: 165 [2020-11-30 01:16:10,909 INFO L226 Difference]: Without dead ends: 157 [2020-11-30 01:16:10,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:16:10,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-30 01:16:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-11-30 01:16:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-30 01:16:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2020-11-30 01:16:10,928 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 31 [2020-11-30 01:16:10,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:10,929 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2020-11-30 01:16:10,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:16:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2020-11-30 01:16:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 01:16:10,930 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:10,930 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] [2020-11-30 01:16:11,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-30 01:16:11,145 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]=== [2020-11-30 01:16:11,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:11,145 INFO L82 PathProgramCache]: Analyzing trace with hash -799117687, now seen corresponding path program 3 times [2020-11-30 01:16:11,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:11,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335420744] [2020-11-30 01:16:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:11,156 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:16:11,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870705113] [2020-11-30 01:16:11,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:16:11,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 01:16:11,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:16:11,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 01:16:11,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:11,301 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:16:11,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:13,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:13,505 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:16:31,837 WARN L193 SmtUtils]: Spent 16.27 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-30 01:16:33,891 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-30 01:16:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 01:16:36,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335420744] [2020-11-30 01:16:36,036 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:16:36,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870705113] [2020-11-30 01:16:36,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:16:36,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 01:16:36,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921314310] [2020-11-30 01:16:36,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:16:36,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:36,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:16:36,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2020-11-30 01:16:36,039 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand 7 states. [2020-11-30 01:16:43,328 WARN L193 SmtUtils]: Spent 4.42 s on a formula simplification that was a NOOP. DAG size: 19 [2020-11-30 01:16:51,857 WARN L193 SmtUtils]: Spent 8.48 s on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2020-11-30 01:16:55,015 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2020-11-30 01:17:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:17,782 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2020-11-30 01:17:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:17:17,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-11-30 01:17:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:17,795 INFO L225 Difference]: With dead ends: 152 [2020-11-30 01:17:17,795 INFO L226 Difference]: Without dead ends: 146 [2020-11-30 01:17:17,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=40, Invalid=66, Unknown=4, NotChecked=0, Total=110 [2020-11-30 01:17:17,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-30 01:17:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 63. [2020-11-30 01:17:17,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-30 01:17:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-11-30 01:17:17,823 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 39 [2020-11-30 01:17:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:17,824 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-11-30 01:17:17,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:17:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-11-30 01:17:17,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-30 01:17:17,828 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:17,828 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] [2020-11-30 01:17:18,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:17:18,029 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]=== [2020-11-30 01:17:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:18,030 INFO L82 PathProgramCache]: Analyzing trace with hash -660503053, now seen corresponding path program 2 times [2020-11-30 01:17:18,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:18,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509859479] [2020-11-30 01:17:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:18,037 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:17:18,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326436377] [2020-11-30 01:17:18,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:17:18,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:17:18,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:17:18,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-30 01:17:18,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:17:18,142 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:17:18,142 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:17:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:18,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509859479] [2020-11-30 01:17:18,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:17:18,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326436377] [2020-11-30 01:17:18,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:17:18,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-30 01:17:18,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491200284] [2020-11-30 01:17:18,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:17:18,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:18,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:17:18,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:17:18,640 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 10 states. [2020-11-30 01:17:19,283 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-30 01:17:19,532 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-30 01:17:19,776 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-30 01:17:20,133 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-30 01:17:20,336 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2020-11-30 01:17:20,580 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2020-11-30 01:17:20,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:20,869 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2020-11-30 01:17:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 01:17:20,873 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-11-30 01:17:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:20,874 INFO L225 Difference]: With dead ends: 110 [2020-11-30 01:17:20,874 INFO L226 Difference]: Without dead ends: 102 [2020-11-30 01:17:20,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-11-30 01:17:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-30 01:17:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 72. [2020-11-30 01:17:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 01:17:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-11-30 01:17:20,892 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 40 [2020-11-30 01:17:20,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:20,893 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-11-30 01:17:20,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:17:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-11-30 01:17:20,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-30 01:17:20,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:20,895 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] [2020-11-30 01:17:21,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:17:21,117 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]=== [2020-11-30 01:17:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:21,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1762975979, now seen corresponding path program 3 times [2020-11-30 01:17:21,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:21,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945452591] [2020-11-30 01:17:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:21,127 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:17:21,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683881605] [2020-11-30 01:17:21,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:17:21,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 01:17:21,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:17:21,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 01:17:21,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:17:21,255 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:17:21,255 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:17:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 01:17:21,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945452591] [2020-11-30 01:17:21,320 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:17:21,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683881605] [2020-11-30 01:17:21,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:17:21,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 01:17:21,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128797441] [2020-11-30 01:17:21,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:17:21,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:21,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:17:21,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:17:21,322 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 6 states. [2020-11-30 01:17:24,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:24,028 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-11-30 01:17:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:17:24,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-11-30 01:17:24,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:24,031 INFO L225 Difference]: With dead ends: 99 [2020-11-30 01:17:24,031 INFO L226 Difference]: Without dead ends: 91 [2020-11-30 01:17:24,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:17:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-30 01:17:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 56. [2020-11-30 01:17:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 01:17:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-11-30 01:17:24,049 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 44 [2020-11-30 01:17:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:24,051 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-11-30 01:17:24,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:17:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-11-30 01:17:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-30 01:17:24,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:24,058 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] [2020-11-30 01:17:24,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-30 01:17:24,269 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]=== [2020-11-30 01:17:24,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:24,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1729727654, now seen corresponding path program 4 times [2020-11-30 01:17:24,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:24,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380201885] [2020-11-30 01:17:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:24,279 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:17:24,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736873631] [2020-11-30 01:17:24,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:17:24,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 01:17:24,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:17:24,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-30 01:17:24,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:17:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:25,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380201885] [2020-11-30 01:17:25,198 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:17:25,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736873631] [2020-11-30 01:17:25,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:17:25,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-30 01:17:25,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783506260] [2020-11-30 01:17:25,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:17:25,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:25,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:17:25,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:17:25,200 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 11 states. [2020-11-30 01:17:27,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:27,220 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2020-11-30 01:17:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 01:17:27,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-11-30 01:17:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:27,228 INFO L225 Difference]: With dead ends: 115 [2020-11-30 01:17:27,229 INFO L226 Difference]: Without dead ends: 113 [2020-11-30 01:17:27,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:17:27,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-30 01:17:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 65. [2020-11-30 01:17:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-30 01:17:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-11-30 01:17:27,247 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 49 [2020-11-30 01:17:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:27,247 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-11-30 01:17:27,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:17:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-11-30 01:17:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-30 01:17:27,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:27,251 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] [2020-11-30 01:17:27,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-30 01:17:27,465 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]=== [2020-11-30 01:17:27,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:27,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1388179298, now seen corresponding path program 5 times [2020-11-30 01:17:27,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:27,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072362820] [2020-11-30 01:17:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:27,474 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:17:27,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13247747] [2020-11-30 01:17:27,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:17:27,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-30 01:17:27,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:17:27,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:17:27,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:17:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:27,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072362820] [2020-11-30 01:17:27,848 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:17:27,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13247747] [2020-11-30 01:17:27,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:17:27,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 01:17:27,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608873540] [2020-11-30 01:17:27,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:17:27,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:27,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:17:27,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:17:27,850 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 7 states. [2020-11-30 01:17:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:29,060 INFO L93 Difference]: Finished difference Result 144 states and 153 transitions. [2020-11-30 01:17:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:17:29,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-11-30 01:17:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:29,064 INFO L225 Difference]: With dead ends: 144 [2020-11-30 01:17:29,064 INFO L226 Difference]: Without dead ends: 96 [2020-11-30 01:17:29,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:17:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-30 01:17:29,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2020-11-30 01:17:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-30 01:17:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-11-30 01:17:29,087 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 53 [2020-11-30 01:17:29,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:29,087 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-11-30 01:17:29,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:17:29,087 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-11-30 01:17:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-30 01:17:29,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:29,091 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] [2020-11-30 01:17:29,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-30 01:17:29,305 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]=== [2020-11-30 01:17:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash 745056723, now seen corresponding path program 6 times [2020-11-30 01:17:29,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:29,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150125978] [2020-11-30 01:17:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:29,321 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:17:29,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574940843] [2020-11-30 01:17:29,332 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:17:29,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-30 01:17:29,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:17:29,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 01:17:29,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:17:29,467 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:17:29,468 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:17:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-11-30 01:17:29,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150125978] [2020-11-30 01:17:29,538 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:17:29,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574940843] [2020-11-30 01:17:29,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:17:29,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 01:17:29,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398618235] [2020-11-30 01:17:29,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:17:29,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:29,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:17:29,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:17:29,541 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 7 states. [2020-11-30 01:17:29,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:29,910 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2020-11-30 01:17:29,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:17:29,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-11-30 01:17:29,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:29,912 INFO L225 Difference]: With dead ends: 108 [2020-11-30 01:17:29,912 INFO L226 Difference]: Without dead ends: 106 [2020-11-30 01:17:29,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:17:29,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-30 01:17:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 77. [2020-11-30 01:17:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-30 01:17:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-11-30 01:17:29,944 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 58 [2020-11-30 01:17:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:29,945 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-11-30 01:17:29,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:17:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-11-30 01:17:29,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-30 01:17:29,945 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:29,946 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] [2020-11-30 01:17:30,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:17:30,173 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]=== [2020-11-30 01:17:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:30,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1423851867, now seen corresponding path program 7 times [2020-11-30 01:17:30,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:30,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598531083] [2020-11-30 01:17:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:30,188 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:17:30,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646124125] [2020-11-30 01:17:30,194 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/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 [2020-11-30 01:17:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:30,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-30 01:17:30,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:17:33,175 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 45 [2020-11-30 01:17:33,177 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:17:33,177 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:17:34,451 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2020-11-30 01:17:36,220 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-30 01:17:45,426 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-11-30 01:17:45,428 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:17:45,429 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:17:45,429 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:17:54,686 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-11-30 01:17:54,693 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:17:54,756 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:17:54,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:17:54,769 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:17:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:54,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598531083] [2020-11-30 01:17:54,810 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:17:54,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646124125] [2020-11-30 01:17:54,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:17:54,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-30 01:17:54,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636351562] [2020-11-30 01:17:54,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 01:17:54,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:54,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 01:17:54,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=196, Unknown=2, NotChecked=0, Total=240 [2020-11-30 01:17:54,812 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 16 states. [2020-11-30 01:18:38,039 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-11-30 01:19:02,570 WARN L193 SmtUtils]: Spent 19.91 s on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-11-30 01:19:10,298 WARN L193 SmtUtils]: Spent 6.99 s on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-11-30 01:19:11,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:19:11,801 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-11-30 01:19:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 01:19:11,806 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-11-30 01:19:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:19:11,807 INFO L225 Difference]: With dead ends: 159 [2020-11-30 01:19:11,807 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:19:11,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 54.4s TimeCoverageRelationStatistics Valid=58, Invalid=282, Unknown=2, NotChecked=0, Total=342 [2020-11-30 01:19:11,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:19:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:19:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:19:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:19:11,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-11-30 01:19:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:19:11,809 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:19:11,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 01:19:11,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:19:11,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:19:12,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-30 01:19:12,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:19:12,233 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2020-11-30 01:19:12,446 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 130 [2020-11-30 01:19:12,569 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 125 [2020-11-30 01:19:12,875 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 123 [2020-11-30 01:19:13,117 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 129 [2020-11-30 01:19:47,489 WARN L193 SmtUtils]: Spent 34.36 s on a formula simplification. DAG size of input: 126 DAG size of output: 41 [2020-11-30 01:19:57,173 WARN L193 SmtUtils]: Spent 9.68 s on a formula simplification. DAG size of input: 126 DAG size of output: 39 [2020-11-30 01:20:35,529 WARN L193 SmtUtils]: Spent 38.35 s on a formula simplification. DAG size of input: 124 DAG size of output: 40 [2020-11-30 01:20:37,316 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 48 DAG size of output: 24 [2020-11-30 01:21:07,874 WARN L193 SmtUtils]: Spent 30.56 s on a formula simplification. DAG size of input: 120 DAG size of output: 41 [2020-11-30 01:21:45,082 WARN L193 SmtUtils]: Spent 37.21 s on a formula simplification. DAG size of input: 124 DAG size of output: 40 [2020-11-30 01:21:47,803 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 73 DAG size of output: 6 [2020-11-30 01:22:24,078 WARN L193 SmtUtils]: Spent 36.27 s on a formula simplification. DAG size of input: 125 DAG size of output: 41 [2020-11-30 01:22:24,080 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 01:22:24,080 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-30 01:22:24,081 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 60) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse1 (= ULTIMATE.start_main_~b~0 0)) (and .cse0 (= ULTIMATE.start_main_~a~0 2) .cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse1) (and .cse0 (= ULTIMATE.start_main_~a~0 1) .cse2 .cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (let ((.cse3 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))) (and .cse0 (= ULTIMATE.start_main_~b~0 (* (* .cse3 ULTIMATE.start_main_~y~0) 2)) (= (mod .cse3 (- 2)) 0) .cse2 .cse1 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))))) [2020-11-30 01:22:24,081 INFO L274 CegarLoopResult]: For program point L36-3(lines 36 60) no Hoare annotation was computed. [2020-11-30 01:22:24,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 01:22:24,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:22:24,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:22:24,081 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 01:22:24,081 INFO L270 CegarLoopResult]: At program point L45-2(lines 45 57) 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))) (let ((.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 2) .cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2))) (let ((.cse3 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))) (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* (* .cse3 ULTIMATE.start_main_~y~0) 2)) (= (mod .cse3 (- 2)) 0) .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0))) (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) (= ULTIMATE.start_assume_abort_if_not_~cond 1)) [2020-11-30 01:22:24,081 INFO L274 CegarLoopResult]: For program point L45-3(lines 45 57) no Hoare annotation was computed. [2020-11-30 01:22:24,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 01:22:24,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 01:22:24,081 INFO L277 CegarLoopResult]: At program point L63(lines 22 64) the Hoare annotation is: true [2020-11-30 01:22:24,082 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 01:22:24,082 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-30 01:22:24,082 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1)) [2020-11-30 01:22:24,082 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-30 01:22:24,082 INFO L270 CegarLoopResult]: At program point L15-3(lines 40 41) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 1 ULTIMATE.start_main_~y~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) [2020-11-30 01:22:24,082 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-30 01:22:24,082 INFO L270 CegarLoopResult]: At program point L15-5(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))) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (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_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (let ((.cse4 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))) (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* (* .cse4 ULTIMATE.start_main_~y~0) 2)) (= (mod .cse4 (- 2)) 0) .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse3))))) [2020-11-30 01:22:24,082 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-30 01:22:24,082 INFO L270 CegarLoopResult]: At program point L15-7(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))) (let ((.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (let ((.cse2 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))) (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* (* .cse2 ULTIMATE.start_main_~y~0) 2)) (= (mod .cse2 (- 2)) 0) .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4)) (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse3 .cse4) (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-30 01:22:24,082 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-30 01:22:24,083 INFO L270 CegarLoopResult]: At program point L15-9(lines 50 51) 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))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (let ((.cse3 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))) (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* (* .cse3 ULTIMATE.start_main_~y~0) 2)) (= (mod .cse3 (- 2)) 0) .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4)) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse4))) (= ULTIMATE.start_assume_abort_if_not_~cond 1)) [2020-11-30 01:22:24,083 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-30 01:22:24,083 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))) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (let ((.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse3) (let ((.cse4 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))) (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* (* .cse4 ULTIMATE.start_main_~y~0) 2)) (= (mod .cse4 (- 2)) 0) .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse3)) (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))))) [2020-11-30 01:22:24,083 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-30 01:22:24,083 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-30 01:22:24,083 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:22:24,083 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 01:22:24,083 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-30 01:22:24,083 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-30 01:22:24,083 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-30 01:22:24,083 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-30 01:22:24,084 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-30 01:22:24,084 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-30 01:22:24,084 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-30 01:22:24,084 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:22:24,084 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 01:22:24,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:22:24 BoogieIcfgContainer [2020-11-30 01:22:24,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:22:24,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:22:24,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:22:24,110 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:22:24,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:04" (3/4) ... [2020-11-30 01:22:24,114 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:22:24,125 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-30 01:22:24,125 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:22:24,125 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:22:24,126 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:22:24,167 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b76315ef-e12d-44e6-8056-432350cde3b9/bin/uautomizer/witness.graphml [2020-11-30 01:22:24,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:22:24,169 INFO L168 Benchmark]: Toolchain (without parser) took 380239.58 ms. Allocated memory was 100.7 MB in the beginning and 172.0 MB in the end (delta: 71.3 MB). Free memory was 73.5 MB in the beginning and 57.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 86.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:24,169 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory was 60.1 MB in the beginning and 60.0 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:22:24,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.69 ms. Allocated memory is still 100.7 MB. Free memory was 73.2 MB in the beginning and 78.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:24,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.18 ms. Allocated memory is still 100.7 MB. Free memory was 78.3 MB in the beginning and 76.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:24,170 INFO L168 Benchmark]: Boogie Preprocessor took 24.54 ms. Allocated memory is still 100.7 MB. Free memory was 76.7 MB in the beginning and 75.8 MB in the end (delta: 902.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:22:24,171 INFO L168 Benchmark]: RCFGBuilder took 402.23 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 59.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:24,171 INFO L168 Benchmark]: TraceAbstraction took 379405.70 ms. Allocated memory was 100.7 MB in the beginning and 172.0 MB in the end (delta: 71.3 MB). Free memory was 59.3 MB in the beginning and 60.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:24,172 INFO L168 Benchmark]: Witness Printer took 58.25 ms. Allocated memory is still 172.0 MB. Free memory was 60.4 MB in the beginning and 57.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:24,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory was 60.1 MB in the beginning and 60.0 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.69 ms. Allocated memory is still 100.7 MB. Free memory was 73.2 MB in the beginning and 78.3 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.18 ms. Allocated memory is still 100.7 MB. Free memory was 78.3 MB in the beginning and 76.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.54 ms. Allocated memory is still 100.7 MB. Free memory was 76.7 MB in the beginning and 75.8 MB in the end (delta: 902.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 402.23 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 59.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 379405.70 ms. Allocated memory was 100.7 MB in the beginning and 172.0 MB in the end (delta: 71.3 MB). Free memory was 59.3 MB in the beginning and 60.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.1 GB. * Witness Printer took 58.25 ms. Allocated memory is still 172.0 MB. Free memory was 60.4 MB in the beginning and 57.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (x == r + q * y && cond == 1) && ((((((1 <= r && 1 <= y) && 1 == cond) && b == y * 2) && b == a * y) || ((((1 <= r && 1 <= y) && a == 1) && 1 <= cond) && b == y)) || ((((((1 <= r && 1 <= y) && b == a * -1 / -2 * y * 2) && a * -1 / -2 % -2 == 0) && 1 == cond) && a % -2 == 0) && b == a * y)) - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (x == r + q * y && ((((((1 <= r && 1 <= y) && a == 2) && 1 <= cond) && b == y * 2) || (((((1 <= r && 1 <= y) && b == a * -1 / -2 * y * 2) && a * -1 / -2 % -2 == 0) && 1 <= cond) && a % -2 == 0)) || (((1 <= r && 1 <= y) && a == 1) && b == y))) && cond == 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (x == r + q * y && ((((((1 <= r && 1 <= y) && a == 1) && 1 <= cond) && b == y) || ((((((1 <= r && 1 <= y) && b == a * -1 / -2 * y * 2) && a * -1 / -2 % -2 == 0) && 1 <= cond) && a % -2 == 0) && b == a * y)) || ((((1 <= r && 1 <= y) && 1 <= cond) && b == y * 2) && b == a * y))) && cond == 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((q == 1 && x == r + y) && y <= x) && 2 * r < x) && 1 <= cond) && cond == 1) || (((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((1 <= y && a == q) && r == x) && q == 0) && cond == 1) && b == 0) || ((((1 <= y && a == 2) && 1 <= cond) && b == y * 2) && cond == 1)) || ((((1 <= y && a == 1) && 1 <= cond) && cond == 1) && b == y)) || ((((((1 <= y && b == a * -1 / -2 * y * 2) && a * -1 / -2 % -2 == 0) && 1 <= cond) && cond == 1) && a % -2 == 0) && b == a * y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (x == r + q * y && ((((((((1 <= r && 1 <= y) && b == a * -1 / -2 * y * 2) && a * -1 / -2 % -2 == 0) && cond == 1) && a % -2 == 0) && b == a * y) || ((((1 <= r && 1 <= y) && b == y * 2) && cond == 1) && b == a * y)) || ((((1 <= r && 1 <= y) && a == 1) && cond == 1) && b == y))) && 1 == cond - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 <= y && cond == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (x == r + q * y && cond == 1) && ((((((1 <= r && 1 <= y) && 1 == cond) && b == y * 2) && b == a * y) || ((((((1 <= r && 1 <= y) && b == a * -1 / -2 * y * 2) && a * -1 / -2 % -2 == 0) && 1 == cond) && a % -2 == 0) && b == a * y)) || ((((1 <= r && 1 <= y) && a == 1) && 1 <= cond) && b == y)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 187.2s, OverallIterations: 16, TraceHistogramMax: 5, AutomataDifference: 129.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 192.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 397 SDtfs, 1169 SDslu, 1020 SDs, 0 SdLazy, 2245 SolverSat, 315 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 71.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 557 GetRequests, 399 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 83.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 380 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 83 NumberOfFragments, 574 HoareAnnotationTreeSize, 10 FomulaSimplifications, 783349 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 178955 FormulaSimplificationTreeSizeReductionInter, 190.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 52.2s InterpolantComputationTime, 500 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 484 ConstructedInterpolants, 0 QuantifiedInterpolants, 249497 SizeOfPredicates, 120 NumberOfNonLiveVariables, 1687 ConjunctsInSsa, 288 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 185/411 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...