./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.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_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/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 fe4c237d03da6bf7a86f5cd898d20e467d10d950 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:00:35,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:00:35,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:00:35,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:00:35,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:00:35,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:00:35,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:00:35,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:00:35,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:00:35,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:00:35,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:00:35,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:00:35,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:00:35,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:00:35,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:00:35,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:00:35,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:00:35,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:00:35,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:00:35,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:00:35,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:00:35,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:00:35,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:00:35,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:00:35,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:00:35,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:00:35,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:00:35,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:00:35,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:00:35,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:00:35,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:00:35,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:00:35,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:00:35,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:00:35,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:00:35,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:00:35,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:00:35,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:00:35,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:00:35,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:00:35,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:00:35,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:00:35,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:00:35,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:00:35,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:00:35,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:00:35,623 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:00:35,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:00:35,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:00:35,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:00:35,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:00:35,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:00:35,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:00:35,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:00:35,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:00:35,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:00:35,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:00:35,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:00:35,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:00:35,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:00:35,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:00:35,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:00:35,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:00:35,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:00:35,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:00:35,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:00:35,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:00:35,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:00:35,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:00:35,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:00:35,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:00:35,630 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_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4c237d03da6bf7a86f5cd898d20e467d10d950 [2020-11-29 22:00:35,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:00:35,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:00:35,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:00:35,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:00:35,972 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:00:35,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2020-11-29 22:00:36,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/data/6776f18f4/7db3a56a36454cecabd64d5f6a58c078/FLAG9e114224b [2020-11-29 22:00:36,664 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:00:36,665 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2020-11-29 22:00:36,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/data/6776f18f4/7db3a56a36454cecabd64d5f6a58c078/FLAG9e114224b [2020-11-29 22:00:37,027 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/data/6776f18f4/7db3a56a36454cecabd64d5f6a58c078 [2020-11-29 22:00:37,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:00:37,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:00:37,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:00:37,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:00:37,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:00:37,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d50936b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37, skipping insertion in model container [2020-11-29 22:00:37,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:00:37,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:00:37,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:00:37,285 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:00:37,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:00:37,322 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:00:37,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37 WrapperNode [2020-11-29 22:00:37,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:00:37,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:00:37,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:00:37,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:00:37,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:00:37,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:00:37,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:00:37,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:00:37,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (1/1) ... [2020-11-29 22:00:37,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:00:37,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:00:37,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:00:37,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:00:37,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:00:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:00:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-11-29 22:00:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-11-29 22:00:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:00:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-11-29 22:00:37,478 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-11-29 22:00:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:00:37,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:00:37,994 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:00:37,995 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 22:00:37,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:00:37 BoogieIcfgContainer [2020-11-29 22:00:37,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:00:37,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:00:37,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:00:38,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:00:38,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:00:37" (1/3) ... [2020-11-29 22:00:38,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d030f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:00:38, skipping insertion in model container [2020-11-29 22:00:38,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:00:37" (2/3) ... [2020-11-29 22:00:38,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d030f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:00:38, skipping insertion in model container [2020-11-29 22:00:38,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:00:37" (3/3) ... [2020-11-29 22:00:38,024 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2020-11-29 22:00:38,038 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:00:38,043 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:00:38,058 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 22:00:38,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:00:38,087 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:00:38,087 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:00:38,087 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:00:38,087 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:00:38,087 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:00:38,088 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:00:38,088 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:00:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-29 22:00:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:00:38,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:38,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:38,114 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:38,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:38,122 INFO L82 PathProgramCache]: Analyzing trace with hash -2146840844, now seen corresponding path program 1 times [2020-11-29 22:00:38,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:38,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328190203] [2020-11-29 22:00:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:38,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:00:38,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328190203] [2020-11-29 22:00:38,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:00:38,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:00:38,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836752735] [2020-11-29 22:00:38,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:00:38,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:38,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:00:38,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:00:38,437 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-11-29 22:00:38,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:38,602 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-11-29 22:00:38,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:00:38,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 22:00:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:38,614 INFO L225 Difference]: With dead ends: 40 [2020-11-29 22:00:38,614 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 22:00:38,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:00:38,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 22:00:38,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-29 22:00:38,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 22:00:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-29 22:00:38,680 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2020-11-29 22:00:38,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:38,681 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-29 22:00:38,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:00:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-11-29 22:00:38,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:00:38,683 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:38,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:38,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:00:38,684 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:38,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:38,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1412337332, now seen corresponding path program 1 times [2020-11-29 22:00:38,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:38,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887928808] [2020-11-29 22:00:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:38,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:00:38,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887928808] [2020-11-29 22:00:38,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:00:38,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:00:38,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134883312] [2020-11-29 22:00:38,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:00:38,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:38,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:00:38,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:00:38,776 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 5 states. [2020-11-29 22:00:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:38,864 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-11-29 22:00:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:00:38,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 22:00:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:38,868 INFO L225 Difference]: With dead ends: 33 [2020-11-29 22:00:38,868 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 22:00:38,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:00:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 22:00:38,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-29 22:00:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 22:00:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-29 22:00:38,882 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2020-11-29 22:00:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:38,882 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-29 22:00:38,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:00:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-11-29 22:00:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:00:38,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:38,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:38,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:00:38,889 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:38,891 INFO L82 PathProgramCache]: Analyzing trace with hash -888595213, now seen corresponding path program 1 times [2020-11-29 22:00:38,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:38,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515260426] [2020-11-29 22:00:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:38,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:39,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:39,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 22:00:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:00:39,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515260426] [2020-11-29 22:00:39,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768399742] [2020-11-29 22:00:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:39,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:00:39,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:00:39,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:39,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2020-11-29 22:00:39,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188522225] [2020-11-29 22:00:39,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 22:00:39,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:39,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:00:39,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:00:39,365 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 10 states. [2020-11-29 22:00:39,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:39,656 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2020-11-29 22:00:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 22:00:39,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-11-29 22:00:39,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:39,659 INFO L225 Difference]: With dead ends: 55 [2020-11-29 22:00:39,660 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 22:00:39,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:00:39,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 22:00:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-29 22:00:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 22:00:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2020-11-29 22:00:39,684 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2020-11-29 22:00:39,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:39,685 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-11-29 22:00:39,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 22:00:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-11-29 22:00:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:00:39,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:39,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:39,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 22:00:39,905 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:39,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:39,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1502460051, now seen corresponding path program 1 times [2020-11-29 22:00:39,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:39,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378778509] [2020-11-29 22:00:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:40,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:00:40,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378778509] [2020-11-29 22:00:40,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193429374] [2020-11-29 22:00:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:40,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:00:40,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:00:40,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:40,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-11-29 22:00:40,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146244220] [2020-11-29 22:00:40,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:00:40,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:40,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:00:40,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:00:40,255 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 9 states. [2020-11-29 22:00:40,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:40,533 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2020-11-29 22:00:40,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:00:40,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-11-29 22:00:40,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:40,538 INFO L225 Difference]: With dead ends: 51 [2020-11-29 22:00:40,538 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 22:00:40,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:00:40,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 22:00:40,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-29 22:00:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 22:00:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2020-11-29 22:00:40,563 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 24 [2020-11-29 22:00:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:40,564 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2020-11-29 22:00:40,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:00:40,564 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2020-11-29 22:00:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 22:00:40,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:40,567 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:40,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:40,768 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:40,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:40,768 INFO L82 PathProgramCache]: Analyzing trace with hash -801267146, now seen corresponding path program 1 times [2020-11-29 22:00:40,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:40,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504992544] [2020-11-29 22:00:40,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:40,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:40,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:40,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:40,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 22:00:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-29 22:00:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-29 22:00:40,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504992544] [2020-11-29 22:00:40,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174008201] [2020-11-29 22:00:40,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:41,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:00:41,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:41,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 22:00:41,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:41,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2020-11-29 22:00:41,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963284906] [2020-11-29 22:00:41,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:00:41,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:41,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:00:41,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-29 22:00:41,175 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand 11 states. [2020-11-29 22:00:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:41,590 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-11-29 22:00:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 22:00:41,590 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-11-29 22:00:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:41,593 INFO L225 Difference]: With dead ends: 105 [2020-11-29 22:00:41,594 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 22:00:41,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-11-29 22:00:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 22:00:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-29 22:00:41,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 22:00:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 92 transitions. [2020-11-29 22:00:41,619 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 92 transitions. Word has length 36 [2020-11-29 22:00:41,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:41,620 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 92 transitions. [2020-11-29 22:00:41,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:00:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 92 transitions. [2020-11-29 22:00:41,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 22:00:41,623 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:41,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:41,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:41,824 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:41,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1583643682, now seen corresponding path program 1 times [2020-11-29 22:00:41,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:41,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526868846] [2020-11-29 22:00:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:41,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:41,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:41,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 22:00:42,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526868846] [2020-11-29 22:00:42,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687287144] [2020-11-29 22:00:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:42,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:00:42,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-29 22:00:42,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:42,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-29 22:00:42,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981250926] [2020-11-29 22:00:42,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 22:00:42,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:42,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 22:00:42,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:00:42,268 INFO L87 Difference]: Start difference. First operand 63 states and 92 transitions. Second operand 13 states. [2020-11-29 22:00:42,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:42,929 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions. [2020-11-29 22:00:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 22:00:42,930 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-11-29 22:00:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:42,934 INFO L225 Difference]: With dead ends: 177 [2020-11-29 22:00:42,934 INFO L226 Difference]: Without dead ends: 117 [2020-11-29 22:00:42,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-11-29 22:00:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-29 22:00:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2020-11-29 22:00:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-29 22:00:42,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 166 transitions. [2020-11-29 22:00:42,992 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 166 transitions. Word has length 37 [2020-11-29 22:00:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:42,992 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 166 transitions. [2020-11-29 22:00:42,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 22:00:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 166 transitions. [2020-11-29 22:00:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 22:00:42,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:42,999 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:43,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:43,199 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:43,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1063158393, now seen corresponding path program 1 times [2020-11-29 22:00:43,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:43,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833235885] [2020-11-29 22:00:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:43,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:43,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:43,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:43,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:43,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:43,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-29 22:00:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-29 22:00:43,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833235885] [2020-11-29 22:00:43,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496364916] [2020-11-29 22:00:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:43,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 22:00:43,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 22:00:43,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:43,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2020-11-29 22:00:43,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653126710] [2020-11-29 22:00:43,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 22:00:43,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:43,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 22:00:43,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:00:43,746 INFO L87 Difference]: Start difference. First operand 103 states and 166 transitions. Second operand 14 states. [2020-11-29 22:00:44,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:44,608 INFO L93 Difference]: Finished difference Result 255 states and 495 transitions. [2020-11-29 22:00:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 22:00:44,609 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-11-29 22:00:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:44,613 INFO L225 Difference]: With dead ends: 255 [2020-11-29 22:00:44,613 INFO L226 Difference]: Without dead ends: 155 [2020-11-29 22:00:44,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-11-29 22:00:44,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-29 22:00:44,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2020-11-29 22:00:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-29 22:00:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 177 transitions. [2020-11-29 22:00:44,680 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 177 transitions. Word has length 51 [2020-11-29 22:00:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:44,681 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 177 transitions. [2020-11-29 22:00:44,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 22:00:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 177 transitions. [2020-11-29 22:00:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-29 22:00:44,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:44,696 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:44,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 22:00:44,896 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:44,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:44,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1732889556, now seen corresponding path program 1 times [2020-11-29 22:00:44,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:44,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831189635] [2020-11-29 22:00:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-29 22:00:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-11-29 22:00:45,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831189635] [2020-11-29 22:00:45,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77213894] [2020-11-29 22:00:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:45,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:00:45,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-11-29 22:00:45,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:45,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2020-11-29 22:00:45,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673089044] [2020-11-29 22:00:45,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 22:00:45,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:45,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 22:00:45,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-11-29 22:00:45,576 INFO L87 Difference]: Start difference. First operand 109 states and 177 transitions. Second operand 16 states. [2020-11-29 22:00:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:46,564 INFO L93 Difference]: Finished difference Result 240 states and 462 transitions. [2020-11-29 22:00:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-29 22:00:46,565 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 93 [2020-11-29 22:00:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:46,568 INFO L225 Difference]: With dead ends: 240 [2020-11-29 22:00:46,568 INFO L226 Difference]: Without dead ends: 107 [2020-11-29 22:00:46,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2020-11-29 22:00:46,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-29 22:00:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2020-11-29 22:00:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-29 22:00:46,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2020-11-29 22:00:46,607 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 93 [2020-11-29 22:00:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:46,608 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2020-11-29 22:00:46,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 22:00:46,608 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2020-11-29 22:00:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-29 22:00:46,611 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:46,611 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:46,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:46,812 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:46,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:46,813 INFO L82 PathProgramCache]: Analyzing trace with hash 740260986, now seen corresponding path program 2 times [2020-11-29 22:00:46,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:46,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934896908] [2020-11-29 22:00:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:46,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:46,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:46,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-29 22:00:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-29 22:00:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-29 22:00:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 67 proven. 142 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-11-29 22:00:47,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934896908] [2020-11-29 22:00:47,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539551551] [2020-11-29 22:00:47,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:47,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:00:47,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:00:47,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 22:00:47,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 30 proven. 217 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2020-11-29 22:00:47,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:47,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2020-11-29 22:00:47,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465846393] [2020-11-29 22:00:47,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 22:00:47,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:47,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 22:00:47,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-11-29 22:00:47,737 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand 17 states. [2020-11-29 22:00:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:48,648 INFO L93 Difference]: Finished difference Result 214 states and 372 transitions. [2020-11-29 22:00:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-29 22:00:48,651 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 148 [2020-11-29 22:00:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:48,655 INFO L225 Difference]: With dead ends: 214 [2020-11-29 22:00:48,655 INFO L226 Difference]: Without dead ends: 134 [2020-11-29 22:00:48,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 22:00:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-29 22:00:48,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 114. [2020-11-29 22:00:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-29 22:00:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 169 transitions. [2020-11-29 22:00:48,675 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 169 transitions. Word has length 148 [2020-11-29 22:00:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:48,676 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 169 transitions. [2020-11-29 22:00:48,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 22:00:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 169 transitions. [2020-11-29 22:00:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-11-29 22:00:48,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:48,683 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:48,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:48,897 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:48,897 INFO L82 PathProgramCache]: Analyzing trace with hash 434982328, now seen corresponding path program 3 times [2020-11-29 22:00:48,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:48,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303560551] [2020-11-29 22:00:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-29 22:00:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-11-29 22:00:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 182 proven. 371 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2020-11-29 22:00:49,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303560551] [2020-11-29 22:00:49,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443196747] [2020-11-29 22:00:49,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:49,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-29 22:00:49,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:00:49,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:00:49,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 521 proven. 33 refuted. 0 times theorem prover too weak. 1646 trivial. 0 not checked. [2020-11-29 22:00:50,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:50,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2020-11-29 22:00:50,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174778116] [2020-11-29 22:00:50,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 22:00:50,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:50,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 22:00:50,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-11-29 22:00:50,314 INFO L87 Difference]: Start difference. First operand 114 states and 169 transitions. Second operand 20 states. [2020-11-29 22:00:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:51,155 INFO L93 Difference]: Finished difference Result 239 states and 381 transitions. [2020-11-29 22:00:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 22:00:51,156 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 282 [2020-11-29 22:00:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:51,159 INFO L225 Difference]: With dead ends: 239 [2020-11-29 22:00:51,160 INFO L226 Difference]: Without dead ends: 130 [2020-11-29 22:00:51,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2020-11-29 22:00:51,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-29 22:00:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-11-29 22:00:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-29 22:00:51,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 177 transitions. [2020-11-29 22:00:51,177 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 177 transitions. Word has length 282 [2020-11-29 22:00:51,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:51,178 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 177 transitions. [2020-11-29 22:00:51,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 22:00:51,178 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 177 transitions. [2020-11-29 22:00:51,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-11-29 22:00:51,184 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:51,185 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:51,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 22:00:51,412 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:51,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1603840300, now seen corresponding path program 4 times [2020-11-29 22:00:51,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:51,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760533205] [2020-11-29 22:00:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:00:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:51,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-29 22:00:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 94 proven. 558 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2020-11-29 22:00:52,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760533205] [2020-11-29 22:00:52,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136456891] [2020-11-29 22:00:52,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:52,352 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 22:00:52,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:00:52,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 22:00:52,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 94 proven. 558 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2020-11-29 22:00:52,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:52,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-11-29 22:00:52,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921739176] [2020-11-29 22:00:52,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 22:00:52,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:52,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 22:00:52,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-11-29 22:00:52,505 INFO L87 Difference]: Start difference. First operand 130 states and 177 transitions. Second operand 14 states. [2020-11-29 22:00:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:52,966 INFO L93 Difference]: Finished difference Result 316 states and 481 transitions. [2020-11-29 22:00:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 22:00:52,967 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 283 [2020-11-29 22:00:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:52,974 INFO L225 Difference]: With dead ends: 316 [2020-11-29 22:00:52,974 INFO L226 Difference]: Without dead ends: 312 [2020-11-29 22:00:52,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-11-29 22:00:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-11-29 22:00:53,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 296. [2020-11-29 22:00:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-11-29 22:00:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 450 transitions. [2020-11-29 22:00:53,010 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 450 transitions. Word has length 283 [2020-11-29 22:00:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:53,011 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 450 transitions. [2020-11-29 22:00:53,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 22:00:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 450 transitions. [2020-11-29 22:00:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-11-29 22:00:53,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:53,029 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 39, 39, 33, 33, 21, 21, 21, 21, 21, 21, 21, 19, 19, 19, 19, 19, 19, 19, 14, 12, 9, 6, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:53,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:53,256 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1155010386, now seen corresponding path program 5 times [2020-11-29 22:00:53,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:53,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974343455] [2020-11-29 22:00:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:53,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:00:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-29 22:00:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-11-29 22:00:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:00:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-29 22:00:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-29 22:00:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8988 backedges. 329 proven. 1458 refuted. 0 times theorem prover too weak. 7201 trivial. 0 not checked. [2020-11-29 22:00:54,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974343455] [2020-11-29 22:00:54,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588963531] [2020-11-29 22:00:54,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:55,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-11-29 22:00:55,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:00:55,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 22:00:55,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8988 backedges. 3801 proven. 84 refuted. 0 times theorem prover too weak. 5103 trivial. 0 not checked. [2020-11-29 22:00:55,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:55,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2020-11-29 22:00:55,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666742793] [2020-11-29 22:00:55,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 22:00:55,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:55,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 22:00:55,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-11-29 22:00:55,642 INFO L87 Difference]: Start difference. First operand 296 states and 450 transitions. Second operand 22 states. [2020-11-29 22:00:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:00:56,551 INFO L93 Difference]: Finished difference Result 637 states and 1072 transitions. [2020-11-29 22:00:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-29 22:00:56,552 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 556 [2020-11-29 22:00:56,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:00:56,559 INFO L225 Difference]: With dead ends: 637 [2020-11-29 22:00:56,560 INFO L226 Difference]: Without dead ends: 351 [2020-11-29 22:00:56,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 711 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2020-11-29 22:00:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-11-29 22:00:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 333. [2020-11-29 22:00:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-11-29 22:00:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 505 transitions. [2020-11-29 22:00:56,607 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 505 transitions. Word has length 556 [2020-11-29 22:00:56,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:00:56,608 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 505 transitions. [2020-11-29 22:00:56,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 22:00:56,608 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 505 transitions. [2020-11-29 22:00:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-11-29 22:00:56,623 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:00:56,624 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 32, 32, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 8, 5, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:00:56,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:56,844 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:00:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:56,845 INFO L82 PathProgramCache]: Analyzing trace with hash 976400355, now seen corresponding path program 6 times [2020-11-29 22:00:56,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:00:56,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316519951] [2020-11-29 22:00:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:00:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:00:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:00:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-29 22:00:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:00:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:57,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-11-29 22:00:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:00:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:00:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:00:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:00:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:00:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6090 backedges. 855 proven. 965 refuted. 0 times theorem prover too weak. 4270 trivial. 0 not checked. [2020-11-29 22:00:58,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316519951] [2020-11-29 22:00:58,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285751491] [2020-11-29 22:00:58,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:00:58,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-29 22:00:58,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:00:58,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:00:58,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6090 backedges. 708 proven. 104 refuted. 0 times theorem prover too weak. 5278 trivial. 0 not checked. [2020-11-29 22:00:59,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:00:59,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 24 [2020-11-29 22:00:59,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520862659] [2020-11-29 22:00:59,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 22:00:59,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:00:59,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 22:00:59,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2020-11-29 22:00:59,279 INFO L87 Difference]: Start difference. First operand 333 states and 505 transitions. Second operand 24 states. [2020-11-29 22:01:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:01,164 INFO L93 Difference]: Finished difference Result 867 states and 1567 transitions. [2020-11-29 22:01:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-29 22:01:01,166 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 460 [2020-11-29 22:01:01,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:01:01,180 INFO L225 Difference]: With dead ends: 867 [2020-11-29 22:01:01,180 INFO L226 Difference]: Without dead ends: 542 [2020-11-29 22:01:01,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 587 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=367, Invalid=2495, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 22:01:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-11-29 22:01:01,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 393. [2020-11-29 22:01:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-11-29 22:01:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 615 transitions. [2020-11-29 22:01:01,250 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 615 transitions. Word has length 460 [2020-11-29 22:01:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:01:01,256 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 615 transitions. [2020-11-29 22:01:01,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 22:01:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 615 transitions. [2020-11-29 22:01:01,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-11-29 22:01:01,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:01:01,264 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:01,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 22:01:01,492 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:01:01,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:01,493 INFO L82 PathProgramCache]: Analyzing trace with hash -232840799, now seen corresponding path program 7 times [2020-11-29 22:01:01,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:01,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269316461] [2020-11-29 22:01:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:01:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:02,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:02,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:02,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:02,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:02,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:01:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:03,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-29 22:01:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-11-29 22:01:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:01:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2020-11-29 22:01:05,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269316461] [2020-11-29 22:01:05,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019734515] [2020-11-29 22:01:05,628 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:01:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:05,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 271 conjunts are in the unsatisfiable core [2020-11-29 22:01:05,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2020-11-29 22:01:08,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:01:08,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 52 [2020-11-29 22:01:08,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87297730] [2020-11-29 22:01:08,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-29 22:01:08,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:01:08,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-29 22:01:08,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 22:01:08,896 INFO L87 Difference]: Start difference. First operand 393 states and 615 transitions. Second operand 52 states. [2020-11-29 22:01:10,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:10,198 INFO L93 Difference]: Finished difference Result 490 states and 835 transitions. [2020-11-29 22:01:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-29 22:01:10,199 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 460 [2020-11-29 22:01:10,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:01:10,207 INFO L225 Difference]: With dead ends: 490 [2020-11-29 22:01:10,208 INFO L226 Difference]: Without dead ends: 486 [2020-11-29 22:01:10,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 646 SyntacticMatches, 34 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=129, Invalid=2627, Unknown=0, NotChecked=0, Total=2756 [2020-11-29 22:01:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-11-29 22:01:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 408. [2020-11-29 22:01:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-11-29 22:01:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 652 transitions. [2020-11-29 22:01:10,250 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 652 transitions. Word has length 460 [2020-11-29 22:01:10,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:01:10,251 INFO L481 AbstractCegarLoop]: Abstraction has 408 states and 652 transitions. [2020-11-29 22:01:10,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-29 22:01:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 652 transitions. [2020-11-29 22:01:10,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2020-11-29 22:01:10,286 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:01:10,287 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 48, 47, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 19, 18, 12, 10, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:10,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 22:01:10,496 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:01:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:10,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1970275366, now seen corresponding path program 8 times [2020-11-29 22:01:10,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:10,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527946677] [2020-11-29 22:01:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:10,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:01:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:01:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-29 22:01:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-11-29 22:01:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:01:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-29 22:01:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-11-29 22:01:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:01:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-11-29 22:01:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:12,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18913 backedges. 1458 proven. 3310 refuted. 0 times theorem prover too weak. 14145 trivial. 0 not checked. [2020-11-29 22:01:13,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527946677] [2020-11-29 22:01:13,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338128373] [2020-11-29 22:01:13,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:01:14,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:01:14,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:01:14,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1807 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 22:01:14,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18913 backedges. 1218 proven. 1304 refuted. 0 times theorem prover too weak. 16391 trivial. 0 not checked. [2020-11-29 22:01:14,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:01:14,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 32 [2020-11-29 22:01:14,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497597228] [2020-11-29 22:01:14,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-29 22:01:14,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:01:14,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-29 22:01:14,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2020-11-29 22:01:14,744 INFO L87 Difference]: Start difference. First operand 408 states and 652 transitions. Second operand 32 states. [2020-11-29 22:01:17,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:17,419 INFO L93 Difference]: Finished difference Result 761 states and 1343 transitions. [2020-11-29 22:01:17,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-29 22:01:17,420 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 801 [2020-11-29 22:01:17,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:01:17,425 INFO L225 Difference]: With dead ends: 761 [2020-11-29 22:01:17,425 INFO L226 Difference]: Without dead ends: 279 [2020-11-29 22:01:17,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2088 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=749, Invalid=6223, Unknown=0, NotChecked=0, Total=6972 [2020-11-29 22:01:17,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-11-29 22:01:17,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 233. [2020-11-29 22:01:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-11-29 22:01:17,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 336 transitions. [2020-11-29 22:01:17,453 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 336 transitions. Word has length 801 [2020-11-29 22:01:17,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:01:17,454 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 336 transitions. [2020-11-29 22:01:17,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-29 22:01:17,454 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 336 transitions. [2020-11-29 22:01:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2020-11-29 22:01:17,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:01:17,465 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 63, 63, 52, 52, 33, 33, 33, 33, 33, 33, 33, 31, 31, 31, 31, 31, 31, 31, 21, 19, 14, 11, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:01:17,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 22:01:17,680 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:01:17,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:01:17,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1018339636, now seen corresponding path program 9 times [2020-11-29 22:01:17,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:01:17,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54482199] [2020-11-29 22:01:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:01:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 22:01:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:01:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:18,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-29 22:01:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-29 22:01:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:01:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-29 22:01:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-11-29 22:01:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:01:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:19,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2020-11-29 22:01:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-29 22:01:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-29 22:01:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 22:01:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-29 22:01:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-29 22:01:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:20,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-29 22:01:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:01:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 23016 backedges. 703 proven. 2899 refuted. 0 times theorem prover too weak. 19414 trivial. 0 not checked. [2020-11-29 22:01:21,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54482199] [2020-11-29 22:01:21,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41331174] [2020-11-29 22:01:21,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:01:21,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2020-11-29 22:01:21,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:01:21,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 22:01:21,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:01:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 23016 backedges. 476 proven. 2322 refuted. 0 times theorem prover too weak. 20218 trivial. 0 not checked. [2020-11-29 22:01:21,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:01:21,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 22 [2020-11-29 22:01:21,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607242745] [2020-11-29 22:01:21,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 22:01:21,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:01:21,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 22:01:21,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-11-29 22:01:21,931 INFO L87 Difference]: Start difference. First operand 233 states and 336 transitions. Second operand 22 states. [2020-11-29 22:01:22,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:01:22,715 INFO L93 Difference]: Finished difference Result 471 states and 717 transitions. [2020-11-29 22:01:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-29 22:01:22,715 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 882 [2020-11-29 22:01:22,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:01:22,716 INFO L225 Difference]: With dead ends: 471 [2020-11-29 22:01:22,716 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:01:22,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1135 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 22:01:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:01:22,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:01:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:01:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:01:22,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 882 [2020-11-29 22:01:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:01:22,721 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:01:22,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 22:01:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:01:22,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:01:22,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:01:22,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:01:25,813 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 26 [2020-11-29 22:01:25,998 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 1 [2020-11-29 22:01:26,312 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 6 [2020-11-29 22:01:27,161 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 46 [2020-11-29 22:01:27,517 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 7 [2020-11-29 22:01:27,519 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:01:27,520 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 22:01:27,520 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:01:27,520 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:01:27,520 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 22:01:27,520 INFO L270 CegarLoopResult]: At program point L43(lines 37 44) the Hoare annotation is: (<= 8 ULTIMATE.start_main_~x~0) [2020-11-29 22:01:27,520 INFO L274 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-11-29 22:01:27,520 INFO L274 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-11-29 22:01:27,520 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 8) (<= 8 ULTIMATE.start_main_~x~0)) [2020-11-29 22:01:27,521 INFO L274 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-11-29 22:01:27,521 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2020-11-29 22:01:27,521 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-29 22:01:27,521 INFO L277 CegarLoopResult]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2020-11-29 22:01:27,521 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 2))) [2020-11-29 22:01:27,521 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-29 22:01:27,521 INFO L270 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= 8 |fibo2_#t~ret9|) (<= |fibo2_#t~ret9| 8) (<= 7 |fibo2_#in~n|) .cse0) (and (<= |fibo2_#t~ret9| 3) (<= 3 |fibo2_#t~ret9|) .cse0 (<= 5 |fibo2_#in~n|) (<= |fibo2_#in~n| 5)) (and .cse0 (<= 8 |fibo2_#in~n|)) (and (<= |fibo2_#in~n| 6) (<= |fibo2_#t~ret9| 5) (<= 6 fibo2_~n) .cse0 (<= 5 |fibo2_#t~ret9|)))) [2020-11-29 22:01:27,521 INFO L274 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-11-29 22:01:27,521 INFO L274 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-11-29 22:01:27,521 INFO L274 CegarLoopResult]: For program point L20(lines 20 26) no Hoare annotation was computed. [2020-11-29 22:01:27,521 INFO L274 CegarLoopResult]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2020-11-29 22:01:27,521 INFO L274 CegarLoopResult]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2020-11-29 22:01:27,522 INFO L277 CegarLoopResult]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2020-11-29 22:01:27,522 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (< 1 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2020-11-29 22:01:27,522 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-29 22:01:27,522 INFO L270 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 7 |fibo1_#in~n|) .cse0 (<= |fibo1_#in~n| 7)) (and (<= |fibo1_#in~n| 5) (<= 3 |fibo1_#t~ret7|) (<= 5 |fibo1_#in~n|) .cse0 (<= |fibo1_#t~ret7| 3)) (and (<= 5 |fibo1_#t~ret7|) (<= |fibo1_#in~n| 6) .cse0 (<= |fibo1_#t~ret7| 5) (<= 6 |fibo1_#in~n|)) (and (<= 4 |fibo1_#in~n|) .cse0 (<= |fibo1_#t~ret7| 2) (<= |fibo1_#in~n| 4) (<= 2 |fibo1_#t~ret7|)) (and (<= 1 |fibo1_#t~ret7|) (< |fibo1_#in~n| 4) (<= |fibo1_#t~ret7| 1) .cse0) (and .cse0 (<= 9 |fibo1_#in~n|)) (and (<= 8 fibo1_~n) .cse0 (<= 13 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 13))))) [2020-11-29 22:01:27,522 INFO L274 CegarLoopResult]: For program point L12(lines 12 16) no Hoare annotation was computed. [2020-11-29 22:01:27,522 INFO L274 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-11-29 22:01:27,522 INFO L274 CegarLoopResult]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2020-11-29 22:01:27,522 INFO L274 CegarLoopResult]: For program point L10(lines 10 16) no Hoare annotation was computed. [2020-11-29 22:01:27,522 INFO L274 CegarLoopResult]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2020-11-29 22:01:27,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:01:27 BoogieIcfgContainer [2020-11-29 22:01:27,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:01:27,538 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:01:27,538 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:01:27,538 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:01:27,539 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:00:37" (3/4) ... [2020-11-29 22:01:27,542 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:01:27,549 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2020-11-29 22:01:27,549 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2020-11-29 22:01:27,553 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-29 22:01:27,553 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:01:27,553 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:01:27,554 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:01:27,603 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b4f75ee5-f362-4a98-9917-85fdc29cb7f1/bin/uautomizer/witness.graphml [2020-11-29 22:01:27,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:01:27,608 INFO L168 Benchmark]: Toolchain (without parser) took 50574.91 ms. Allocated memory was 96.5 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 68.5 MB in the beginning and 972.8 MB in the end (delta: -904.2 MB). Peak memory consumption was 782.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:01:27,608 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 55.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:01:27,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.02 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 72.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:01:27,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.74 ms. Allocated memory is still 96.5 MB. Free memory was 72.7 MB in the beginning and 71.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:01:27,609 INFO L168 Benchmark]: Boogie Preprocessor took 23.06 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 70.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:01:27,610 INFO L168 Benchmark]: RCFGBuilder took 610.49 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 57.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:01:27,610 INFO L168 Benchmark]: TraceAbstraction took 49538.35 ms. Allocated memory was 96.5 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 57.5 MB in the beginning and 975.9 MB in the end (delta: -918.4 MB). Peak memory consumption was 876.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:01:27,610 INFO L168 Benchmark]: Witness Printer took 68.82 ms. Allocated memory is still 1.8 GB. Free memory was 975.9 MB in the beginning and 972.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:01:27,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 55.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.02 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 72.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.74 ms. Allocated memory is still 96.5 MB. Free memory was 72.7 MB in the beginning and 71.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.06 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 70.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 610.49 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 57.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 49538.35 ms. Allocated memory was 96.5 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 57.5 MB in the beginning and 975.9 MB in the end (delta: -918.4 MB). Peak memory consumption was 876.0 MB. Max. memory is 16.1 GB. * Witness Printer took 68.82 ms. Allocated memory is still 1.8 GB. Free memory was 975.9 MB in the beginning and 972.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 8 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 44.8s, OverallIterations: 16, TraceHistogramMax: 66, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 584 SDtfs, 1082 SDslu, 6773 SDs, 0 SdLazy, 8845 SolverSat, 1141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5837 GetRequests, 5347 SyntacticMatches, 39 SemanticMatches, 451 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=408occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 416 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 1283 PreInvPairs, 2153 NumberOfFragments, 177 HoareAnnotationTreeSize, 1283 FomulaSimplifications, 27130 FormulaSimplificationTreeSizeReduction, 1.9s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24207 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 8293 NumberOfCodeBlocks, 7248 NumberOfCodeBlocksAsserted, 103 NumberOfCheckSat, 8263 ConstructedInterpolants, 0 QuantifiedInterpolants, 7039145 SizeOfPredicates, 79 NumberOfNonLiveVariables, 7177 ConjunctsInSsa, 428 ConjunctsInUnsatCore, 30 InterpolantComputations, 2 PerfectInterpolantSequences, 118092/136696 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...