./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i25_o25-1.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_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i25_o25-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/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 7214208e9cb45e87a457dfabd3017460791ae1b1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:15:53,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:15:53,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:15:53,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:15:53,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:15:53,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:15:53,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:15:53,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:15:53,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:15:53,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:15:53,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:15:53,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:15:53,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:15:53,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:15:53,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:15:53,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:15:53,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:15:53,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:15:53,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:15:53,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:15:53,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:15:53,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:15:53,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:15:53,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:15:53,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:15:53,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:15:53,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:15:53,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:15:53,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:15:53,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:15:53,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:15:53,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:15:53,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:15:53,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:15:53,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:15:53,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:15:53,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:15:53,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:15:53,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:15:53,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:15:53,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:15:53,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:15:53,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:15:53,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:15:53,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:15:53,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:15:53,682 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:15:53,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:15:53,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:15:53,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:15:53,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:15:53,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:15:53,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:15:53,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:15:53,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:15:53,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:15:53,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:15:53,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:15:53,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:15:53,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:15:53,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:15:53,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:15:53,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:15:53,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:15:53,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:15:53,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:15:53,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:15:53,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:15:53,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:15:53,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:15:53,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:15:53,689 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_7cbecffa-86ce-4103-a1d8-0c40934e1171/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7214208e9cb45e87a457dfabd3017460791ae1b1 [2020-11-30 00:15:53,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:15:54,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:15:54,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:15:54,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:15:54,015 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:15:54,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id_i25_o25-1.c [2020-11-30 00:15:54,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/data/ab5c9fdf4/10ff69d7d060440289a4cdb892e0e952/FLAG1da151978 [2020-11-30 00:15:54,650 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:15:54,650 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/sv-benchmarks/c/recursive-simple/id_i25_o25-1.c [2020-11-30 00:15:54,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/data/ab5c9fdf4/10ff69d7d060440289a4cdb892e0e952/FLAG1da151978 [2020-11-30 00:15:55,006 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/data/ab5c9fdf4/10ff69d7d060440289a4cdb892e0e952 [2020-11-30 00:15:55,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:15:55,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:15:55,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:15:55,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:15:55,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:15:55,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1186bb6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55, skipping insertion in model container [2020-11-30 00:15:55,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:15:55,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:15:55,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:15:55,241 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:15:55,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:15:55,267 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:15:55,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55 WrapperNode [2020-11-30 00:15:55,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:15:55,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:15:55,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:15:55,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:15:55,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:15:55,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:15:55,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:15:55,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:15:55,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (1/1) ... [2020-11-30 00:15:55,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:15:55,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:15:55,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:15:55,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:15:55,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:15:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:15:55,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:15:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:15:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-30 00:15:55,414 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-30 00:15:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:15:55,699 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:15:55,700 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:15:55,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:55 BoogieIcfgContainer [2020-11-30 00:15:55,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:15:55,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:15:55,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:15:55,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:15:55,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:15:55" (1/3) ... [2020-11-30 00:15:55,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5c67ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:15:55, skipping insertion in model container [2020-11-30 00:15:55,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:55" (2/3) ... [2020-11-30 00:15:55,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5c67ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:15:55, skipping insertion in model container [2020-11-30 00:15:55,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:55" (3/3) ... [2020-11-30 00:15:55,724 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i25_o25-1.c [2020-11-30 00:15:55,735 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:15:55,739 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:15:55,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:15:55,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:15:55,813 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:15:55,813 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:15:55,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:15:55,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:15:55,814 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:15:55,814 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:15:55,814 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:15:55,830 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-11-30 00:15:55,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:15:55,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:55,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:55,836 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:55,842 INFO L82 PathProgramCache]: Analyzing trace with hash 666808458, now seen corresponding path program 1 times [2020-11-30 00:15:55,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:55,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916790355] [2020-11-30 00:15:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:56,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916790355] [2020-11-30 00:15:56,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:56,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:15:56,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615973904] [2020-11-30 00:15:56,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:15:56,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:56,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:15:56,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:15:56,108 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-11-30 00:15:56,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:56,221 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-11-30 00:15:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:15:56,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 00:15:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:56,232 INFO L225 Difference]: With dead ends: 26 [2020-11-30 00:15:56,232 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 00:15:56,235 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 [2020-11-30 00:15:56,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 00:15:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 00:15:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 00:15:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-30 00:15:56,277 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-11-30 00:15:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:56,278 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-30 00:15:56,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:15:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-30 00:15:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:15:56,280 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:56,280 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:56,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:15:56,281 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:56,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1352629460, now seen corresponding path program 1 times [2020-11-30 00:15:56,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:56,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447420349] [2020-11-30 00:15:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:56,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:56,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:15:56,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447420349] [2020-11-30 00:15:56,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723633200] [2020-11-30 00:15:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:15:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:56,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:15:56,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:15:56,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:15:56,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-11-30 00:15:56,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47404848] [2020-11-30 00:15:56,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:15:56,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:56,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:15:56,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:15:56,662 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2020-11-30 00:15:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:56,739 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-30 00:15:56,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:15:56,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-11-30 00:15:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:56,742 INFO L225 Difference]: With dead ends: 22 [2020-11-30 00:15:56,742 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 00:15:56,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:15:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 00:15:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 00:15:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:15:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-30 00:15:56,750 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2020-11-30 00:15:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:56,750 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-30 00:15:56,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:15:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-30 00:15:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:15:56,751 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:56,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:56,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 00:15:56,964 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:56,964 INFO L82 PathProgramCache]: Analyzing trace with hash 832070858, now seen corresponding path program 2 times [2020-11-30 00:15:56,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:56,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851024977] [2020-11-30 00:15:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:57,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 00:15:57,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851024977] [2020-11-30 00:15:57,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236657850] [2020-11-30 00:15:57,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:15:57,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:15:57,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:15:57,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:15:57,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 00:15:57,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:15:57,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-11-30 00:15:57,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961435441] [2020-11-30 00:15:57,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:15:57,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:57,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:15:57,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:15:57,350 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 9 states. [2020-11-30 00:15:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:57,446 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-30 00:15:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:15:57,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-11-30 00:15:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:57,449 INFO L225 Difference]: With dead ends: 25 [2020-11-30 00:15:57,449 INFO L226 Difference]: Without dead ends: 21 [2020-11-30 00:15:57,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:15:57,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-30 00:15:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-30 00:15:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-30 00:15:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-30 00:15:57,456 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2020-11-30 00:15:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:57,457 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-30 00:15:57,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:15:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-30 00:15:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 00:15:57,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:57,459 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:57,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:15:57,660 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:57,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1547641236, now seen corresponding path program 3 times [2020-11-30 00:15:57,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:57,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871554617] [2020-11-30 00:15:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:57,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:57,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 00:15:57,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871554617] [2020-11-30 00:15:57,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952526017] [2020-11-30 00:15:57,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:15:57,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 00:15:57,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:15:57,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:15:57,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 00:15:58,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:15:58,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-11-30 00:15:58,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524529459] [2020-11-30 00:15:58,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:15:58,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:58,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:15:58,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:15:58,106 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2020-11-30 00:15:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:58,242 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-11-30 00:15:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:15:58,243 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-11-30 00:15:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:58,244 INFO L225 Difference]: With dead ends: 28 [2020-11-30 00:15:58,245 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 00:15:58,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:15:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 00:15:58,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 00:15:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:15:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-11-30 00:15:58,252 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2020-11-30 00:15:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:58,252 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-11-30 00:15:58,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:15:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-11-30 00:15:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:15:58,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:58,254 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:58,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:15:58,455 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash -346978038, now seen corresponding path program 4 times [2020-11-30 00:15:58,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:58,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985849115] [2020-11-30 00:15:58,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:58,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:58,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:58,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:58,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-30 00:15:58,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985849115] [2020-11-30 00:15:58,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616708680] [2020-11-30 00:15:58,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:15:58,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:15:58,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:15:58,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:15:58,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-30 00:15:58,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:15:58,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-11-30 00:15:58,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094272807] [2020-11-30 00:15:58,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:15:58,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:58,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:15:58,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:15:58,920 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 11 states. [2020-11-30 00:15:59,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:59,025 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-11-30 00:15:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:15:59,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-11-30 00:15:59,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:59,027 INFO L225 Difference]: With dead ends: 31 [2020-11-30 00:15:59,027 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 00:15:59,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:15:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 00:15:59,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 00:15:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:15:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-30 00:15:59,033 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2020-11-30 00:15:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:59,034 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-30 00:15:59,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:15:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-30 00:15:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-30 00:15:59,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:59,035 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:59,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:15:59,253 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:59,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:59,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1234184620, now seen corresponding path program 5 times [2020-11-30 00:15:59,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:59,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450819920] [2020-11-30 00:15:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:59,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:59,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:59,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:15:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-30 00:15:59,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450819920] [2020-11-30 00:15:59,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057107] [2020-11-30 00:15:59,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:15:59,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-30 00:15:59,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:15:59,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:15:59,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-30 00:15:59,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:15:59,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-11-30 00:15:59,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338383477] [2020-11-30 00:15:59,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:15:59,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:59,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:15:59,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:15:59,663 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 12 states. [2020-11-30 00:15:59,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:59,797 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-11-30 00:15:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:15:59,799 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-11-30 00:15:59,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:59,801 INFO L225 Difference]: With dead ends: 34 [2020-11-30 00:15:59,801 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 00:15:59,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:15:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 00:15:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-30 00:15:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 00:15:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-30 00:15:59,812 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2020-11-30 00:15:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:59,815 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-30 00:15:59,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:15:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-30 00:15:59,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-30 00:15:59,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:59,817 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:00,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 00:16:00,036 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:00,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:00,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1831214410, now seen corresponding path program 6 times [2020-11-30 00:16:00,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:00,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897466164] [2020-11-30 00:16:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-30 00:16:00,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897466164] [2020-11-30 00:16:00,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498508860] [2020-11-30 00:16:00,322 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:00,396 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-30 00:16:00,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:00,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 00:16:00,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-30 00:16:00,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:00,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-30 00:16:00,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127440484] [2020-11-30 00:16:00,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 00:16:00,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:00,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 00:16:00,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:16:00,500 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 13 states. [2020-11-30 00:16:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:00,671 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-30 00:16:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:16:00,672 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-11-30 00:16:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:00,674 INFO L225 Difference]: With dead ends: 37 [2020-11-30 00:16:00,674 INFO L226 Difference]: Without dead ends: 33 [2020-11-30 00:16:00,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2020-11-30 00:16:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-30 00:16:00,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-30 00:16:00,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-30 00:16:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-11-30 00:16:00,681 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46 [2020-11-30 00:16:00,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:00,681 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-11-30 00:16:00,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 00:16:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-11-30 00:16:00,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-30 00:16:00,683 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:00,683 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:00,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:00,884 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:00,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:00,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1739954964, now seen corresponding path program 7 times [2020-11-30 00:16:00,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:00,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263865963] [2020-11-30 00:16:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:00,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-30 00:16:01,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263865963] [2020-11-30 00:16:01,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467694969] [2020-11-30 00:16:01,180 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:16:01,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-30 00:16:01,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:01,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-11-30 00:16:01,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970252323] [2020-11-30 00:16:01,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 00:16:01,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:01,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 00:16:01,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:16:01,354 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 14 states. [2020-11-30 00:16:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:01,525 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-30 00:16:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:16:01,526 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-11-30 00:16:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:01,527 INFO L225 Difference]: With dead ends: 40 [2020-11-30 00:16:01,527 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 00:16:01,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=303, Unknown=0, NotChecked=0, Total=462 [2020-11-30 00:16:01,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 00:16:01,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-30 00:16:01,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 00:16:01,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-11-30 00:16:01,533 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52 [2020-11-30 00:16:01,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:01,534 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-11-30 00:16:01,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 00:16:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-11-30 00:16:01,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-30 00:16:01,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:01,535 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:01,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:01,736 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:01,737 INFO L82 PathProgramCache]: Analyzing trace with hash -632151670, now seen corresponding path program 8 times [2020-11-30 00:16:01,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:01,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456940469] [2020-11-30 00:16:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:01,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-30 00:16:02,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456940469] [2020-11-30 00:16:02,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045893204] [2020-11-30 00:16:02,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:02,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:16:02,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:02,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 00:16:02,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-30 00:16:02,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:02,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-30 00:16:02,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524201205] [2020-11-30 00:16:02,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 00:16:02,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:02,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 00:16:02,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:16:02,262 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 15 states. [2020-11-30 00:16:02,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:02,465 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-11-30 00:16:02,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 00:16:02,466 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-11-30 00:16:02,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:02,467 INFO L225 Difference]: With dead ends: 43 [2020-11-30 00:16:02,467 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 00:16:02,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-11-30 00:16:02,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 00:16:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-30 00:16:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:16:02,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-30 00:16:02,479 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58 [2020-11-30 00:16:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:02,479 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-30 00:16:02,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 00:16:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-30 00:16:02,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-30 00:16:02,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:02,481 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:02,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-30 00:16:02,690 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:02,691 INFO L82 PathProgramCache]: Analyzing trace with hash 764702676, now seen corresponding path program 9 times [2020-11-30 00:16:02,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:02,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299336193] [2020-11-30 00:16:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:02,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:02,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:02,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:02,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-30 00:16:03,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299336193] [2020-11-30 00:16:03,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419342632] [2020-11-30 00:16:03,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:03,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-30 00:16:03,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:03,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 00:16:03,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-30 00:16:03,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:03,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2020-11-30 00:16:03,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336079558] [2020-11-30 00:16:03,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 00:16:03,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:03,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 00:16:03,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:16:03,330 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 16 states. [2020-11-30 00:16:03,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:03,540 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-11-30 00:16:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 00:16:03,541 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2020-11-30 00:16:03,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:03,542 INFO L225 Difference]: With dead ends: 46 [2020-11-30 00:16:03,542 INFO L226 Difference]: Without dead ends: 42 [2020-11-30 00:16:03,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-11-30 00:16:03,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-30 00:16:03,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-30 00:16:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-30 00:16:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-11-30 00:16:03,555 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64 [2020-11-30 00:16:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:03,555 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-11-30 00:16:03,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 00:16:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-11-30 00:16:03,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-30 00:16:03,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:03,557 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:03,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:03,779 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:03,779 INFO L82 PathProgramCache]: Analyzing trace with hash 554800586, now seen corresponding path program 10 times [2020-11-30 00:16:03,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:03,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220928155] [2020-11-30 00:16:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-30 00:16:04,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220928155] [2020-11-30 00:16:04,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945747648] [2020-11-30 00:16:04,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:04,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:16:04,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:04,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 00:16:04,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-30 00:16:04,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:04,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-30 00:16:04,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293946036] [2020-11-30 00:16:04,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-30 00:16:04,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:04,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 00:16:04,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:16:04,355 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-11-30 00:16:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:04,584 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-11-30 00:16:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 00:16:04,585 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-11-30 00:16:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:04,586 INFO L225 Difference]: With dead ends: 49 [2020-11-30 00:16:04,586 INFO L226 Difference]: Without dead ends: 45 [2020-11-30 00:16:04,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=492, Unknown=0, NotChecked=0, Total=756 [2020-11-30 00:16:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-30 00:16:04,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-30 00:16:04,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 00:16:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-11-30 00:16:04,594 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 70 [2020-11-30 00:16:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:04,594 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-11-30 00:16:04,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-30 00:16:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-11-30 00:16:04,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-30 00:16:04,595 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:04,596 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:04,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:04,796 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1164946284, now seen corresponding path program 11 times [2020-11-30 00:16:04,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:04,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830728124] [2020-11-30 00:16:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:05,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:05,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:05,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:05,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:05,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-11-30 00:16:05,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830728124] [2020-11-30 00:16:05,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31799059] [2020-11-30 00:16:05,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:05,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-30 00:16:05,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:05,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-30 00:16:05,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-11-30 00:16:05,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:05,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-11-30 00:16:05,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887441200] [2020-11-30 00:16:05,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-30 00:16:05,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:05,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-30 00:16:05,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:16:05,429 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 18 states. [2020-11-30 00:16:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:05,657 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-11-30 00:16:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 00:16:05,658 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-11-30 00:16:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:05,659 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:16:05,659 INFO L226 Difference]: Without dead ends: 48 [2020-11-30 00:16:05,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=565, Unknown=0, NotChecked=0, Total=870 [2020-11-30 00:16:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-30 00:16:05,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-30 00:16:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-30 00:16:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-11-30 00:16:05,666 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 76 [2020-11-30 00:16:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:05,667 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-11-30 00:16:05,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-30 00:16:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-11-30 00:16:05,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-30 00:16:05,674 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:05,675 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:05,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-30 00:16:05,875 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:05,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:05,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1163888118, now seen corresponding path program 12 times [2020-11-30 00:16:05,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:05,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923077812] [2020-11-30 00:16:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-11-30 00:16:06,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923077812] [2020-11-30 00:16:06,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399258495] [2020-11-30 00:16:06,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:06,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-30 00:16:06,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:06,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-30 00:16:06,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-11-30 00:16:06,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:06,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-30 00:16:06,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821184339] [2020-11-30 00:16:06,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-30 00:16:06,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:06,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-30 00:16:06,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:16:06,599 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 19 states. [2020-11-30 00:16:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:06,850 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-11-30 00:16:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 00:16:06,851 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 82 [2020-11-30 00:16:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:06,852 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:16:06,853 INFO L226 Difference]: Without dead ends: 51 [2020-11-30 00:16:06,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=643, Unknown=0, NotChecked=0, Total=992 [2020-11-30 00:16:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-30 00:16:06,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-30 00:16:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 00:16:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-11-30 00:16:06,859 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 82 [2020-11-30 00:16:06,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:06,867 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-11-30 00:16:06,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-30 00:16:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-11-30 00:16:06,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-30 00:16:06,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:06,868 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:07,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-30 00:16:07,069 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash -164804268, now seen corresponding path program 13 times [2020-11-30 00:16:07,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:07,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524218260] [2020-11-30 00:16:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-11-30 00:16:07,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524218260] [2020-11-30 00:16:07,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112728142] [2020-11-30 00:16:07,641 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:07,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-30 00:16:07,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-11-30 00:16:07,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:07,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-11-30 00:16:07,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361205534] [2020-11-30 00:16:07,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-30 00:16:07,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:07,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-30 00:16:07,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2020-11-30 00:16:07,822 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 20 states. [2020-11-30 00:16:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:08,141 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-11-30 00:16:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-30 00:16:08,142 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2020-11-30 00:16:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:08,143 INFO L225 Difference]: With dead ends: 58 [2020-11-30 00:16:08,143 INFO L226 Difference]: Without dead ends: 54 [2020-11-30 00:16:08,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2020-11-30 00:16:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-30 00:16:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-30 00:16:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 00:16:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-11-30 00:16:08,156 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 88 [2020-11-30 00:16:08,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:08,156 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-11-30 00:16:08,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-30 00:16:08,156 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-11-30 00:16:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-30 00:16:08,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:08,158 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:08,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-30 00:16:08,388 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:08,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:08,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1799016010, now seen corresponding path program 14 times [2020-11-30 00:16:08,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:08,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494223532] [2020-11-30 00:16:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-11-30 00:16:08,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494223532] [2020-11-30 00:16:08,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667603976] [2020-11-30 00:16:08,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:09,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:16:09,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:09,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-30 00:16:09,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-11-30 00:16:09,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:09,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-11-30 00:16:09,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352294114] [2020-11-30 00:16:09,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-30 00:16:09,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:09,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-30 00:16:09,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2020-11-30 00:16:09,136 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 21 states. [2020-11-30 00:16:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:09,428 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-11-30 00:16:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-30 00:16:09,429 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 94 [2020-11-30 00:16:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:09,430 INFO L225 Difference]: With dead ends: 61 [2020-11-30 00:16:09,430 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 00:16:09,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=446, Invalid=814, Unknown=0, NotChecked=0, Total=1260 [2020-11-30 00:16:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 00:16:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-30 00:16:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-30 00:16:09,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-11-30 00:16:09,444 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 94 [2020-11-30 00:16:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:09,445 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-11-30 00:16:09,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-30 00:16:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-11-30 00:16:09,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-30 00:16:09,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:09,449 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:09,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:09,676 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:09,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1022316052, now seen corresponding path program 15 times [2020-11-30 00:16:09,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:09,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982118262] [2020-11-30 00:16:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:09,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:09,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:09,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:09,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:10,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:10,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-11-30 00:16:10,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982118262] [2020-11-30 00:16:10,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244207856] [2020-11-30 00:16:10,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:10,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-30 00:16:10,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:10,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-30 00:16:10,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-11-30 00:16:10,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:10,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-11-30 00:16:10,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562894881] [2020-11-30 00:16:10,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-30 00:16:10,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:10,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-30 00:16:10,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2020-11-30 00:16:10,618 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 22 states. [2020-11-30 00:16:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:10,919 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-11-30 00:16:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-30 00:16:10,920 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 100 [2020-11-30 00:16:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:10,921 INFO L225 Difference]: With dead ends: 64 [2020-11-30 00:16:10,921 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 00:16:10,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=499, Invalid=907, Unknown=0, NotChecked=0, Total=1406 [2020-11-30 00:16:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 00:16:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-30 00:16:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-30 00:16:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-11-30 00:16:10,928 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 100 [2020-11-30 00:16:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:10,929 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-11-30 00:16:10,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-30 00:16:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-11-30 00:16:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-30 00:16:10,931 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:10,931 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:11,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-30 00:16:11,132 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:11,132 INFO L82 PathProgramCache]: Analyzing trace with hash 35426954, now seen corresponding path program 16 times [2020-11-30 00:16:11,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:11,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596715611] [2020-11-30 00:16:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:11,829 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-30 00:16:11,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596715611] [2020-11-30 00:16:11,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346545302] [2020-11-30 00:16:11,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:11,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:16:11,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:11,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-30 00:16:11,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-30 00:16:12,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:12,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-30 00:16:12,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839230478] [2020-11-30 00:16:12,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-30 00:16:12,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:12,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-30 00:16:12,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2020-11-30 00:16:12,030 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 23 states. [2020-11-30 00:16:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:12,366 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-11-30 00:16:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-30 00:16:12,367 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2020-11-30 00:16:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:12,368 INFO L225 Difference]: With dead ends: 67 [2020-11-30 00:16:12,368 INFO L226 Difference]: Without dead ends: 63 [2020-11-30 00:16:12,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=555, Invalid=1005, Unknown=0, NotChecked=0, Total=1560 [2020-11-30 00:16:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-30 00:16:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-30 00:16:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-30 00:16:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-11-30 00:16:12,376 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 106 [2020-11-30 00:16:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:12,376 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-11-30 00:16:12,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-30 00:16:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-11-30 00:16:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-30 00:16:12,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:12,378 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:12,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-30 00:16:12,578 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:12,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1604689196, now seen corresponding path program 17 times [2020-11-30 00:16:12,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:12,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140501937] [2020-11-30 00:16:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:12,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:13,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:13,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-11-30 00:16:13,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140501937] [2020-11-30 00:16:13,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547895575] [2020-11-30 00:16:13,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:13,385 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-30 00:16:13,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:13,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-30 00:16:13,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-11-30 00:16:13,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:13,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2020-11-30 00:16:13,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988946080] [2020-11-30 00:16:13,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-30 00:16:13,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:13,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-30 00:16:13,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2020-11-30 00:16:13,548 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 24 states. [2020-11-30 00:16:13,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:13,892 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-11-30 00:16:13,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-30 00:16:13,893 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 112 [2020-11-30 00:16:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:13,894 INFO L225 Difference]: With dead ends: 70 [2020-11-30 00:16:13,894 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 00:16:13,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=614, Invalid=1108, Unknown=0, NotChecked=0, Total=1722 [2020-11-30 00:16:13,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 00:16:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-30 00:16:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-30 00:16:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-11-30 00:16:13,900 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 112 [2020-11-30 00:16:13,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:13,900 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-11-30 00:16:13,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-30 00:16:13,901 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-11-30 00:16:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-11-30 00:16:13,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:13,902 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:14,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-30 00:16:14,120 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash 427935434, now seen corresponding path program 18 times [2020-11-30 00:16:14,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:14,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830307657] [2020-11-30 00:16:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-11-30 00:16:14,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830307657] [2020-11-30 00:16:14,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415784673] [2020-11-30 00:16:14,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:15,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-30 00:16:15,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:15,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-30 00:16:15,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-11-30 00:16:15,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:15,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-30 00:16:15,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070782638] [2020-11-30 00:16:15,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-30 00:16:15,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:15,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-30 00:16:15,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2020-11-30 00:16:15,179 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 25 states. [2020-11-30 00:16:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:15,559 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-11-30 00:16:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-30 00:16:15,559 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 118 [2020-11-30 00:16:15,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:15,560 INFO L225 Difference]: With dead ends: 73 [2020-11-30 00:16:15,561 INFO L226 Difference]: Without dead ends: 69 [2020-11-30 00:16:15,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=676, Invalid=1216, Unknown=0, NotChecked=0, Total=1892 [2020-11-30 00:16:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-30 00:16:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-30 00:16:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-30 00:16:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-11-30 00:16:15,567 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 118 [2020-11-30 00:16:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:15,567 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-11-30 00:16:15,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-30 00:16:15,567 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-11-30 00:16:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-11-30 00:16:15,575 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:15,575 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:15,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:15,776 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:15,776 INFO L82 PathProgramCache]: Analyzing trace with hash 653428628, now seen corresponding path program 19 times [2020-11-30 00:16:15,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:15,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109270467] [2020-11-30 00:16:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:15,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:15,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:15,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-11-30 00:16:16,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109270467] [2020-11-30 00:16:16,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886217881] [2020-11-30 00:16:16,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:16,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-30 00:16:16,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-11-30 00:16:16,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:16,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-11-30 00:16:16,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496693652] [2020-11-30 00:16:16,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-30 00:16:16,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:16,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-30 00:16:16,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2020-11-30 00:16:16,871 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 26 states. [2020-11-30 00:16:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:17,260 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-11-30 00:16:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-30 00:16:17,261 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 124 [2020-11-30 00:16:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:17,262 INFO L225 Difference]: With dead ends: 76 [2020-11-30 00:16:17,262 INFO L226 Difference]: Without dead ends: 72 [2020-11-30 00:16:17,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=1329, Unknown=0, NotChecked=0, Total=2070 [2020-11-30 00:16:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-30 00:16:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-11-30 00:16:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 00:16:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-11-30 00:16:17,270 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 124 [2020-11-30 00:16:17,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:17,272 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-11-30 00:16:17,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-30 00:16:17,273 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-11-30 00:16:17,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-30 00:16:17,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:17,274 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:17,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:17,496 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:17,497 INFO L82 PathProgramCache]: Analyzing trace with hash -693736694, now seen corresponding path program 20 times [2020-11-30 00:16:17,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:17,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848066347] [2020-11-30 00:16:17,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:17,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:18,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:18,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:18,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:18,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:18,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-30 00:16:18,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848066347] [2020-11-30 00:16:18,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983476705] [2020-11-30 00:16:18,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:18,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:16:18,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:18,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 44 conjunts are in the unsatisfiable core [2020-11-30 00:16:18,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-30 00:16:18,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:18,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-11-30 00:16:18,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167229354] [2020-11-30 00:16:18,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-30 00:16:18,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:18,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-30 00:16:18,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2020-11-30 00:16:18,711 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 27 states. [2020-11-30 00:16:19,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:19,070 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-11-30 00:16:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-30 00:16:19,084 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 130 [2020-11-30 00:16:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:19,086 INFO L225 Difference]: With dead ends: 79 [2020-11-30 00:16:19,086 INFO L226 Difference]: Without dead ends: 75 [2020-11-30 00:16:19,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=809, Invalid=1447, Unknown=0, NotChecked=0, Total=2256 [2020-11-30 00:16:19,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-30 00:16:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-30 00:16:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 00:16:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-11-30 00:16:19,092 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 130 [2020-11-30 00:16:19,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:19,093 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-11-30 00:16:19,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-30 00:16:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-11-30 00:16:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-30 00:16:19,094 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:19,094 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:19,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-30 00:16:19,295 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:19,295 INFO L82 PathProgramCache]: Analyzing trace with hash 205241428, now seen corresponding path program 21 times [2020-11-30 00:16:19,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:19,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663764039] [2020-11-30 00:16:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:20,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:20,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:20,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:20,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:20,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-11-30 00:16:20,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663764039] [2020-11-30 00:16:20,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516584551] [2020-11-30 00:16:20,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:20,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-11-30 00:16:20,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:20,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 46 conjunts are in the unsatisfiable core [2020-11-30 00:16:20,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-11-30 00:16:20,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:20,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-11-30 00:16:20,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044054576] [2020-11-30 00:16:20,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-30 00:16:20,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:20,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-30 00:16:20,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2020-11-30 00:16:20,625 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 28 states. [2020-11-30 00:16:21,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:21,118 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-11-30 00:16:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-30 00:16:21,119 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 136 [2020-11-30 00:16:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:21,120 INFO L225 Difference]: With dead ends: 82 [2020-11-30 00:16:21,120 INFO L226 Difference]: Without dead ends: 78 [2020-11-30 00:16:21,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=880, Invalid=1570, Unknown=0, NotChecked=0, Total=2450 [2020-11-30 00:16:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-30 00:16:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-30 00:16:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-30 00:16:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-11-30 00:16:21,127 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 136 [2020-11-30 00:16:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:21,127 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-11-30 00:16:21,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-30 00:16:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-11-30 00:16:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-11-30 00:16:21,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:21,129 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:21,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-30 00:16:21,329 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:21,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:21,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1446609078, now seen corresponding path program 22 times [2020-11-30 00:16:21,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:21,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258804308] [2020-11-30 00:16:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:21,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:22,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:22,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:22,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:22,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:22,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:22,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:22,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-11-30 00:16:22,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258804308] [2020-11-30 00:16:22,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001601756] [2020-11-30 00:16:22,463 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:22,532 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:16:22,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:22,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-30 00:16:22,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-11-30 00:16:22,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:22,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-11-30 00:16:22,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684744114] [2020-11-30 00:16:22,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-30 00:16:22,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:22,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-30 00:16:22,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812 [2020-11-30 00:16:22,717 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 29 states. [2020-11-30 00:16:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:23,186 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-11-30 00:16:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-30 00:16:23,186 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 142 [2020-11-30 00:16:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:23,187 INFO L225 Difference]: With dead ends: 85 [2020-11-30 00:16:23,187 INFO L226 Difference]: Without dead ends: 81 [2020-11-30 00:16:23,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=954, Invalid=1698, Unknown=0, NotChecked=0, Total=2652 [2020-11-30 00:16:23,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-30 00:16:23,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-11-30 00:16:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-30 00:16:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-11-30 00:16:23,193 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 142 [2020-11-30 00:16:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:23,194 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-11-30 00:16:23,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-30 00:16:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-11-30 00:16:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-30 00:16:23,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:23,195 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:23,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:23,395 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:23,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:23,396 INFO L82 PathProgramCache]: Analyzing trace with hash 12189972, now seen corresponding path program 23 times [2020-11-30 00:16:23,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:23,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338518254] [2020-11-30 00:16:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-11-30 00:16:24,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338518254] [2020-11-30 00:16:24,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059675804] [2020-11-30 00:16:24,725 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:24,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-11-30 00:16:24,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:24,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 50 conjunts are in the unsatisfiable core [2020-11-30 00:16:24,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-11-30 00:16:25,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:25,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-11-30 00:16:25,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352769038] [2020-11-30 00:16:25,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-30 00:16:25,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:25,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-30 00:16:25,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2020-11-30 00:16:25,011 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 30 states. [2020-11-30 00:16:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:25,445 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2020-11-30 00:16:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-30 00:16:25,446 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 148 [2020-11-30 00:16:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:25,447 INFO L225 Difference]: With dead ends: 88 [2020-11-30 00:16:25,447 INFO L226 Difference]: Without dead ends: 84 [2020-11-30 00:16:25,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1031, Invalid=1831, Unknown=0, NotChecked=0, Total=2862 [2020-11-30 00:16:25,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-30 00:16:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-11-30 00:16:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-30 00:16:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-11-30 00:16:25,453 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 148 [2020-11-30 00:16:25,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:25,454 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-11-30 00:16:25,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-30 00:16:25,454 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-11-30 00:16:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-30 00:16:25,455 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:25,455 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:25,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-30 00:16:25,656 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:25,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:25,656 INFO L82 PathProgramCache]: Analyzing trace with hash 236848010, now seen corresponding path program 24 times [2020-11-30 00:16:25,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:25,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008860300] [2020-11-30 00:16:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:25,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:25,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:25,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:25,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-11-30 00:16:27,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008860300] [2020-11-30 00:16:27,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571994117] [2020-11-30 00:16:27,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:27,185 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2020-11-30 00:16:27,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:27,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 52 conjunts are in the unsatisfiable core [2020-11-30 00:16:27,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-11-30 00:16:27,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:27,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-30 00:16:27,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279503280] [2020-11-30 00:16:27,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-30 00:16:27,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:27,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-30 00:16:27,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=545, Unknown=0, NotChecked=0, Total=930 [2020-11-30 00:16:27,396 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 31 states. [2020-11-30 00:16:27,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:27,960 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-11-30 00:16:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-30 00:16:27,960 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 154 [2020-11-30 00:16:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:27,962 INFO L225 Difference]: With dead ends: 91 [2020-11-30 00:16:27,962 INFO L226 Difference]: Without dead ends: 87 [2020-11-30 00:16:27,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1111, Invalid=1969, Unknown=0, NotChecked=0, Total=3080 [2020-11-30 00:16:27,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-30 00:16:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-30 00:16:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-30 00:16:27,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-11-30 00:16:27,971 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 154 [2020-11-30 00:16:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:27,971 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-11-30 00:16:27,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-30 00:16:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-11-30 00:16:27,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-30 00:16:27,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:27,973 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:28,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:28,192 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:28,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:28,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1777423828, now seen corresponding path program 25 times [2020-11-30 00:16:28,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:28,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602097586] [2020-11-30 00:16:28,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:28,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:28,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:28,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:28,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:29,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:29,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:29,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:29,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:29,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:30,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:30,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:30,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:30,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:31,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:31,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:31,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:31,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-11-30 00:16:32,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602097586] [2020-11-30 00:16:32,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749750155] [2020-11-30 00:16:32,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:32,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 107 conjunts are in the unsatisfiable core [2020-11-30 00:16:32,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-11-30 00:16:32,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:16:32,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2020-11-30 00:16:32,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3268083] [2020-11-30 00:16:32,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-11-30 00:16:32,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:32,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-11-30 00:16:32,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-11-30 00:16:32,423 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 55 states. [2020-11-30 00:16:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:33,717 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2020-11-30 00:16:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-30 00:16:33,718 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 160 [2020-11-30 00:16:33,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:33,720 INFO L225 Difference]: With dead ends: 94 [2020-11-30 00:16:33,720 INFO L226 Difference]: Without dead ends: 90 [2020-11-30 00:16:33,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-11-30 00:16:33,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-30 00:16:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-11-30 00:16:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-30 00:16:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-11-30 00:16:33,734 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 160 [2020-11-30 00:16:33,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:33,736 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-11-30 00:16:33,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-11-30 00:16:33,736 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-11-30 00:16:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-30 00:16:33,737 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:33,738 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:33,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-30 00:16:33,960 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:33,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1240004554, now seen corresponding path program 26 times [2020-11-30 00:16:33,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:33,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903491717] [2020-11-30 00:16:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:34,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:35,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:35,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:35,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:35,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:35,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:35,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:16:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 975 proven. 52 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-11-30 00:16:35,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903491717] [2020-11-30 00:16:35,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076163675] [2020-11-30 00:16:35,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:16:35,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:16:35,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:16:35,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 56 conjunts are in the unsatisfiable core [2020-11-30 00:16:35,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-11-30 00:16:35,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:16:35,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [31] total 33 [2020-11-30 00:16:35,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962027754] [2020-11-30 00:16:35,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-30 00:16:35,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:35,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-30 00:16:35,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=640, Unknown=0, NotChecked=0, Total=1056 [2020-11-30 00:16:35,925 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 31 states. [2020-11-30 00:16:36,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:36,869 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2020-11-30 00:16:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-30 00:16:36,870 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 166 [2020-11-30 00:16:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:36,870 INFO L225 Difference]: With dead ends: 90 [2020-11-30 00:16:36,870 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:16:36,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1226, Invalid=2314, Unknown=0, NotChecked=0, Total=3540 [2020-11-30 00:16:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:16:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:16:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:16:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:16:36,873 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 166 [2020-11-30 00:16:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:36,873 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:16:36,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-30 00:16:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:16:36,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:16:37,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-30 00:16:37,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:16:37,095 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:16:37,095 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:16:37,095 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:16:37,095 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:16:37,095 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 00:16:37,095 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-30 00:16:37,096 INFO L274 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-11-30 00:16:37,096 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (<= ULTIMATE.start_main_~input~0 25) (<= 25 ULTIMATE.start_main_~input~0)) [2020-11-30 00:16:37,096 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-11-30 00:16:37,096 INFO L274 CegarLoopResult]: For program point L11(lines 11 17) no Hoare annotation was computed. [2020-11-30 00:16:37,096 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-30 00:16:37,096 INFO L274 CegarLoopResult]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2020-11-30 00:16:37,096 INFO L274 CegarLoopResult]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2020-11-30 00:16:37,096 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-11-30 00:16:37,096 INFO L277 CegarLoopResult]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2020-11-30 00:16:37,096 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-30 00:16:37,097 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-11-30 00:16:37,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:16:37 BoogieIcfgContainer [2020-11-30 00:16:37,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:16:37,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:16:37,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:16:37,109 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:16:37,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:55" (3/4) ... [2020-11-30 00:16:37,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:16:37,118 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2020-11-30 00:16:37,121 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 00:16:37,121 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:16:37,122 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:16:37,122 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:16:37,146 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7cbecffa-86ce-4103-a1d8-0c40934e1171/bin/uautomizer/witness.graphml [2020-11-30 00:16:37,146 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:16:37,148 INFO L168 Benchmark]: Toolchain (without parser) took 42136.28 ms. Allocated memory was 92.3 MB in the beginning and 690.0 MB in the end (delta: 597.7 MB). Free memory was 58.3 MB in the beginning and 625.4 MB in the end (delta: -567.1 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:37,148 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:16:37,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.92 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 70.1 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:37,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.03 ms. Allocated memory is still 92.3 MB. Free memory was 70.1 MB in the beginning and 68.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:16:37,149 INFO L168 Benchmark]: Boogie Preprocessor took 19.17 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 67.9 MB in the end (delta: 661.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:37,150 INFO L168 Benchmark]: RCFGBuilder took 377.95 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 57.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:37,150 INFO L168 Benchmark]: TraceAbstraction took 41393.19 ms. Allocated memory was 92.3 MB in the beginning and 690.0 MB in the end (delta: 597.7 MB). Free memory was 56.5 MB in the beginning and 627.5 MB in the end (delta: -571.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:37,151 INFO L168 Benchmark]: Witness Printer took 37.42 ms. Allocated memory is still 690.0 MB. Free memory was 627.5 MB in the beginning and 625.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:37,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.92 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 70.1 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.03 ms. Allocated memory is still 92.3 MB. Free memory was 70.1 MB in the beginning and 68.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.17 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 67.9 MB in the end (delta: 661.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 377.95 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 57.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 41393.19 ms. Allocated memory was 92.3 MB in the beginning and 690.0 MB in the end (delta: 597.7 MB). Free memory was 56.5 MB in the beginning and 627.5 MB in the end (delta: -571.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. * Witness Printer took 37.42 ms. Allocated memory is still 690.0 MB. Free memory was 627.5 MB in the beginning and 625.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 41.2s, OverallIterations: 27, TraceHistogramMax: 27, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 373 SDtfs, 1309 SDslu, 4155 SDs, 0 SdLazy, 3224 SolverSat, 338 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3933 GetRequests, 3072 SyntacticMatches, 2 SemanticMatches, 859 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5551 ImplicationChecksByTransitivity, 16.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 27 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 23.0s InterpolantComputationTime, 4742 NumberOfCodeBlocks, 4742 NumberOfCodeBlocksAsserted, 226 NumberOfCheckSat, 4689 ConstructedInterpolants, 0 QuantifiedInterpolants, 1436265 SizeOfPredicates, 377 NumberOfNonLiveVariables, 6266 ConjunctsInSsa, 859 ConjunctsInUnsatCore, 53 InterpolantComputations, 2 PerfectInterpolantSequences, 20956/37908 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...