./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.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_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/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 09f813c788ce76f2fed6ff9e53c54c81ca842bfc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:08:18,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:08:18,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:08:18,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:08:18,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:08:18,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:08:18,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:08:18,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:08:18,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:08:18,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:08:18,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:08:18,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:08:18,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:08:18,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:08:18,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:08:18,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:08:18,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:08:18,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:08:18,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:08:18,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:08:18,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:08:18,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:08:18,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:08:18,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:08:18,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:08:18,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:08:18,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:08:18,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:08:18,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:08:18,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:08:18,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:08:18,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:08:18,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:08:18,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:08:18,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:08:18,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:08:18,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:08:18,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:08:18,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:08:18,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:08:18,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:08:18,706 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:08:18,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:08:18,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:08:18,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:08:18,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:08:18,739 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:08:18,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:08:18,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:08:18,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:08:18,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:08:18,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:08:18,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:08:18,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:08:18,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:08:18,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:08:18,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:08:18,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:08:18,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:08:18,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:08:18,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:08:18,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:08:18,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:08:18,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:08:18,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:08:18,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:08:18,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:08:18,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:08:18,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:08:18,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:08:18,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:08:18,748 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_eb5059e3-9382-41b8-b031-8d98a8d73507/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09f813c788ce76f2fed6ff9e53c54c81ca842bfc [2020-11-28 03:08:19,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:08:19,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:08:19,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:08:19,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:08:19,095 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:08:19,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-11-28 03:08:19,228 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/data/acde74c3c/d76f4be19c4449e0b6a91aab839fceaa/FLAGbc7cb69be [2020-11-28 03:08:19,775 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:08:19,776 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-11-28 03:08:19,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/data/acde74c3c/d76f4be19c4449e0b6a91aab839fceaa/FLAGbc7cb69be [2020-11-28 03:08:20,129 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/data/acde74c3c/d76f4be19c4449e0b6a91aab839fceaa [2020-11-28 03:08:20,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:08:20,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:08:20,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:08:20,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:08:20,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:08:20,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d79da5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20, skipping insertion in model container [2020-11-28 03:08:20,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:08:20,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:08:20,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:08:20,474 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:08:20,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:08:20,542 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:08:20,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20 WrapperNode [2020-11-28 03:08:20,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:08:20,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:08:20,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:08:20,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:08:20,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:08:20,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:08:20,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:08:20,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:08:20,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (1/1) ... [2020-11-28 03:08:20,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:08:20,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:08:20,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:08:20,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:08:20,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:08:20,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:08:20,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:08:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:08:20,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:08:21,636 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:08:21,637 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 03:08:21,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:08:21 BoogieIcfgContainer [2020-11-28 03:08:21,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:08:21,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:08:21,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:08:21,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:08:21,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:08:20" (1/3) ... [2020-11-28 03:08:21,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4e77b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:08:21, skipping insertion in model container [2020-11-28 03:08:21,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:20" (2/3) ... [2020-11-28 03:08:21,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4e77b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:08:21, skipping insertion in model container [2020-11-28 03:08:21,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:08:21" (3/3) ... [2020-11-28 03:08:21,648 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-11-28 03:08:21,659 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:08:21,664 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:08:21,676 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:08:21,704 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:08:21,704 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:08:21,704 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:08:21,704 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:08:21,704 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:08:21,705 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:08:21,705 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:08:21,705 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:08:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-11-28 03:08:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:08:21,728 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:21,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:21,730 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:21,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2020-11-28 03:08:21,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:21,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584865244] [2020-11-28 03:08:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:21,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584865244] [2020-11-28 03:08:21,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:21,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:08:21,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153795306] [2020-11-28 03:08:21,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:08:21,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:21,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:08:21,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:08:22,002 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-11-28 03:08:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:22,081 INFO L93 Difference]: Finished difference Result 151 states and 252 transitions. [2020-11-28 03:08:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:08:22,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-28 03:08:22,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:22,097 INFO L225 Difference]: With dead ends: 151 [2020-11-28 03:08:22,097 INFO L226 Difference]: Without dead ends: 68 [2020-11-28 03:08:22,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:08:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-28 03:08:22,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-28 03:08:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 03:08:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2020-11-28 03:08:22,151 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2020-11-28 03:08:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:22,152 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2020-11-28 03:08:22,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:08:22,152 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2020-11-28 03:08:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:08:22,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:22,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:22,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:08:22,155 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:22,157 INFO L82 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2020-11-28 03:08:22,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:22,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038019535] [2020-11-28 03:08:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:22,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038019535] [2020-11-28 03:08:22,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:22,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:08:22,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544762602] [2020-11-28 03:08:22,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:08:22,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:22,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:08:22,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:08:22,273 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand 4 states. [2020-11-28 03:08:22,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:22,372 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2020-11-28 03:08:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:08:22,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-28 03:08:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:22,376 INFO L225 Difference]: With dead ends: 88 [2020-11-28 03:08:22,386 INFO L226 Difference]: Without dead ends: 68 [2020-11-28 03:08:22,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-28 03:08:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-28 03:08:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 03:08:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-11-28 03:08:22,398 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2020-11-28 03:08:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:22,398 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-11-28 03:08:22,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:08:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-11-28 03:08:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:08:22,401 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:22,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:22,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:08:22,401 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:22,418 INFO L82 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2020-11-28 03:08:22,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:22,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090105044] [2020-11-28 03:08:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:22,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090105044] [2020-11-28 03:08:22,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:22,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:08:22,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151429529] [2020-11-28 03:08:22,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:08:22,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:22,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:08:22,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:08:22,547 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-11-28 03:08:22,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:22,775 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2020-11-28 03:08:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:08:22,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 03:08:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:22,782 INFO L225 Difference]: With dead ends: 119 [2020-11-28 03:08:22,783 INFO L226 Difference]: Without dead ends: 69 [2020-11-28 03:08:22,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:08:22,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-28 03:08:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-11-28 03:08:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 03:08:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2020-11-28 03:08:22,799 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2020-11-28 03:08:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:22,800 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2020-11-28 03:08:22,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:08:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2020-11-28 03:08:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:08:22,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:22,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:22,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:08:22,801 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:22,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2020-11-28 03:08:22,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:22,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032690633] [2020-11-28 03:08:22,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:22,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032690633] [2020-11-28 03:08:22,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:22,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:08:22,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680399634] [2020-11-28 03:08:22,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:08:22,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:22,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:08:22,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:08:22,883 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand 3 states. [2020-11-28 03:08:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:22,983 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2020-11-28 03:08:22,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:08:22,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-28 03:08:22,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:22,986 INFO L225 Difference]: With dead ends: 129 [2020-11-28 03:08:22,986 INFO L226 Difference]: Without dead ends: 75 [2020-11-28 03:08:22,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:08:22,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-28 03:08:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-11-28 03:08:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-28 03:08:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2020-11-28 03:08:23,002 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2020-11-28 03:08:23,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:23,002 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2020-11-28 03:08:23,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:08:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2020-11-28 03:08:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:08:23,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:23,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:23,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:08:23,004 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:23,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:23,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2020-11-28 03:08:23,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:23,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325241258] [2020-11-28 03:08:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:23,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325241258] [2020-11-28 03:08:23,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:23,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:08:23,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001347049] [2020-11-28 03:08:23,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:08:23,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:23,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:08:23,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:08:23,133 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand 4 states. [2020-11-28 03:08:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:23,413 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2020-11-28 03:08:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:08:23,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-28 03:08:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:23,416 INFO L225 Difference]: With dead ends: 136 [2020-11-28 03:08:23,416 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 03:08:23,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:08:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 03:08:23,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-11-28 03:08:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-28 03:08:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2020-11-28 03:08:23,435 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2020-11-28 03:08:23,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:23,435 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2020-11-28 03:08:23,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:08:23,435 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2020-11-28 03:08:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:08:23,437 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:23,437 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:23,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:08:23,437 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:23,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:23,438 INFO L82 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2020-11-28 03:08:23,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:23,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668689725] [2020-11-28 03:08:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:23,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668689725] [2020-11-28 03:08:23,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214960508] [2020-11-28 03:08:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:23,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:08:23,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:23,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:23,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:23,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-28 03:08:23,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422072321] [2020-11-28 03:08:23,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:08:23,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:23,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:08:23,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:23,775 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand 5 states. [2020-11-28 03:08:23,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:23,880 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2020-11-28 03:08:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:08:23,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-11-28 03:08:23,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:23,883 INFO L225 Difference]: With dead ends: 160 [2020-11-28 03:08:23,883 INFO L226 Difference]: Without dead ends: 103 [2020-11-28 03:08:23,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:23,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-28 03:08:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-11-28 03:08:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-28 03:08:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2020-11-28 03:08:23,898 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2020-11-28 03:08:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:23,898 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2020-11-28 03:08:23,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:08:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2020-11-28 03:08:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-28 03:08:23,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:23,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:24,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 03:08:24,122 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:24,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:24,123 INFO L82 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2020-11-28 03:08:24,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:24,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915573665] [2020-11-28 03:08:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:24,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915573665] [2020-11-28 03:08:24,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505771329] [2020-11-28 03:08:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:24,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:08:24,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:24,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:24,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 03:08:24,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538317625] [2020-11-28 03:08:24,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:08:24,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:24,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:08:24,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:08:24,548 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand 6 states. [2020-11-28 03:08:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:24,709 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2020-11-28 03:08:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:08:24,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-11-28 03:08:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:24,716 INFO L225 Difference]: With dead ends: 126 [2020-11-28 03:08:24,717 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 03:08:24,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:08:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 03:08:24,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-11-28 03:08:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:08:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2020-11-28 03:08:24,743 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 35 [2020-11-28 03:08:24,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:24,744 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2020-11-28 03:08:24,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:08:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2020-11-28 03:08:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 03:08:24,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:24,746 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:24,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:24,966 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:24,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:24,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2010695315, now seen corresponding path program 2 times [2020-11-28 03:08:24,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:24,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400661198] [2020-11-28 03:08:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:25,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400661198] [2020-11-28 03:08:25,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949829481] [2020-11-28 03:08:25,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:25,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:08:25,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:08:25,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:08:25,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 03:08:25,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:08:25,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2020-11-28 03:08:25,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914308131] [2020-11-28 03:08:25,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:08:25,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:25,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:08:25,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:08:25,278 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand 6 states. [2020-11-28 03:08:25,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:25,661 INFO L93 Difference]: Finished difference Result 265 states and 356 transitions. [2020-11-28 03:08:25,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:08:25,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-11-28 03:08:25,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:25,665 INFO L225 Difference]: With dead ends: 265 [2020-11-28 03:08:25,665 INFO L226 Difference]: Without dead ends: 261 [2020-11-28 03:08:25,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:08:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-11-28 03:08:25,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 127. [2020-11-28 03:08:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-28 03:08:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-11-28 03:08:25,681 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 36 [2020-11-28 03:08:25,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:25,682 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-11-28 03:08:25,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:08:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-11-28 03:08:25,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-28 03:08:25,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:25,690 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:25,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:25,906 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:25,907 INFO L82 PathProgramCache]: Analyzing trace with hash 508659463, now seen corresponding path program 1 times [2020-11-28 03:08:25,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:25,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134519377] [2020-11-28 03:08:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:26,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134519377] [2020-11-28 03:08:26,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529495567] [2020-11-28 03:08:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:26,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:08:26,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:26,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:26,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 03:08:26,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774269538] [2020-11-28 03:08:26,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:08:26,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:26,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:08:26,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:08:26,176 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 6 states. [2020-11-28 03:08:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:26,338 INFO L93 Difference]: Finished difference Result 288 states and 395 transitions. [2020-11-28 03:08:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:08:26,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-11-28 03:08:26,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:26,341 INFO L225 Difference]: With dead ends: 288 [2020-11-28 03:08:26,341 INFO L226 Difference]: Without dead ends: 188 [2020-11-28 03:08:26,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:08:26,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-11-28 03:08:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 134. [2020-11-28 03:08:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-28 03:08:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 182 transitions. [2020-11-28 03:08:26,365 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 182 transitions. Word has length 38 [2020-11-28 03:08:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:26,366 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 182 transitions. [2020-11-28 03:08:26,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:08:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 182 transitions. [2020-11-28 03:08:26,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 03:08:26,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:26,373 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:26,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:26,594 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:26,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:26,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1319305574, now seen corresponding path program 1 times [2020-11-28 03:08:26,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:26,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427875907] [2020-11-28 03:08:26,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:26,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427875907] [2020-11-28 03:08:26,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639433595] [2020-11-28 03:08:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:26,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:08:26,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:27,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:27,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 03:08:27,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672648159] [2020-11-28 03:08:27,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:08:27,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:27,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:08:27,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:08:27,039 INFO L87 Difference]: Start difference. First operand 134 states and 182 transitions. Second operand 7 states. [2020-11-28 03:08:27,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:27,414 INFO L93 Difference]: Finished difference Result 234 states and 325 transitions. [2020-11-28 03:08:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:08:27,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-11-28 03:08:27,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:27,416 INFO L225 Difference]: With dead ends: 234 [2020-11-28 03:08:27,416 INFO L226 Difference]: Without dead ends: 146 [2020-11-28 03:08:27,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:08:27,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-28 03:08:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2020-11-28 03:08:27,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-28 03:08:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 184 transitions. [2020-11-28 03:08:27,428 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 184 transitions. Word has length 40 [2020-11-28 03:08:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:27,429 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 184 transitions. [2020-11-28 03:08:27,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:08:27,429 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 184 transitions. [2020-11-28 03:08:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 03:08:27,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:27,430 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:27,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 03:08:27,646 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:27,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:27,647 INFO L82 PathProgramCache]: Analyzing trace with hash -976708544, now seen corresponding path program 2 times [2020-11-28 03:08:27,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:27,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000004735] [2020-11-28 03:08:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:27,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:27,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000004735] [2020-11-28 03:08:27,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879184335] [2020-11-28 03:08:27,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:27,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:08:27,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:08:27,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:08:27,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:08:27,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:08:27,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-11-28 03:08:27,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714282631] [2020-11-28 03:08:27,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:08:27,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:27,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:08:27,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:08:27,937 INFO L87 Difference]: Start difference. First operand 136 states and 184 transitions. Second operand 5 states. [2020-11-28 03:08:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:28,057 INFO L93 Difference]: Finished difference Result 155 states and 203 transitions. [2020-11-28 03:08:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:08:28,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-11-28 03:08:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:28,060 INFO L225 Difference]: With dead ends: 155 [2020-11-28 03:08:28,060 INFO L226 Difference]: Without dead ends: 150 [2020-11-28 03:08:28,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:08:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-28 03:08:28,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2020-11-28 03:08:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 03:08:28,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 194 transitions. [2020-11-28 03:08:28,075 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 194 transitions. Word has length 41 [2020-11-28 03:08:28,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:28,076 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 194 transitions. [2020-11-28 03:08:28,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:08:28,076 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 194 transitions. [2020-11-28 03:08:28,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 03:08:28,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:28,078 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:28,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:28,302 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:28,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:28,303 INFO L82 PathProgramCache]: Analyzing trace with hash -974861502, now seen corresponding path program 1 times [2020-11-28 03:08:28,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:28,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457466680] [2020-11-28 03:08:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:08:28,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457466680] [2020-11-28 03:08:28,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:28,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:08:28,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721117865] [2020-11-28 03:08:28,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:08:28,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:28,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:08:28,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:28,368 INFO L87 Difference]: Start difference. First operand 145 states and 194 transitions. Second operand 5 states. [2020-11-28 03:08:28,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:28,429 INFO L93 Difference]: Finished difference Result 150 states and 198 transitions. [2020-11-28 03:08:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:08:28,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-11-28 03:08:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:28,431 INFO L225 Difference]: With dead ends: 150 [2020-11-28 03:08:28,431 INFO L226 Difference]: Without dead ends: 140 [2020-11-28 03:08:28,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:08:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-28 03:08:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-11-28 03:08:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-28 03:08:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2020-11-28 03:08:28,445 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 41 [2020-11-28 03:08:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:28,445 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2020-11-28 03:08:28,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:08:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2020-11-28 03:08:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-28 03:08:28,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:28,448 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:28,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:08:28,448 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:28,450 INFO L82 PathProgramCache]: Analyzing trace with hash -543462300, now seen corresponding path program 1 times [2020-11-28 03:08:28,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:28,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700423350] [2020-11-28 03:08:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:28,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700423350] [2020-11-28 03:08:28,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501742365] [2020-11-28 03:08:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:28,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:08:28,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:28,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:28,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 03:08:28,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683220613] [2020-11-28 03:08:28,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:08:28,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:28,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:08:28,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:08:28,707 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand 7 states. [2020-11-28 03:08:28,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:28,821 INFO L93 Difference]: Finished difference Result 315 states and 414 transitions. [2020-11-28 03:08:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:08:28,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-11-28 03:08:28,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:28,824 INFO L225 Difference]: With dead ends: 315 [2020-11-28 03:08:28,824 INFO L226 Difference]: Without dead ends: 208 [2020-11-28 03:08:28,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:08:28,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-28 03:08:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 147. [2020-11-28 03:08:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-28 03:08:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2020-11-28 03:08:28,836 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 42 [2020-11-28 03:08:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:28,837 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2020-11-28 03:08:28,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:08:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2020-11-28 03:08:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 03:08:28,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:28,838 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:29,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:29,059 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:29,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1931714523, now seen corresponding path program 1 times [2020-11-28 03:08:29,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:29,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394636904] [2020-11-28 03:08:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:29,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394636904] [2020-11-28 03:08:29,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247426385] [2020-11-28 03:08:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:29,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:08:29,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:29,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:29,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-28 03:08:29,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051037235] [2020-11-28 03:08:29,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:08:29,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:29,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:08:29,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:08:29,390 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand 8 states. [2020-11-28 03:08:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:29,726 INFO L93 Difference]: Finished difference Result 251 states and 337 transitions. [2020-11-28 03:08:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:08:29,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-11-28 03:08:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:29,728 INFO L225 Difference]: With dead ends: 251 [2020-11-28 03:08:29,728 INFO L226 Difference]: Without dead ends: 159 [2020-11-28 03:08:29,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:08:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-28 03:08:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2020-11-28 03:08:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-28 03:08:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2020-11-28 03:08:29,737 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 44 [2020-11-28 03:08:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:29,738 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2020-11-28 03:08:29,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:08:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2020-11-28 03:08:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:08:29,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:29,739 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:29,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 03:08:29,954 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:29,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:29,955 INFO L82 PathProgramCache]: Analyzing trace with hash 514014493, now seen corresponding path program 2 times [2020-11-28 03:08:29,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:29,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17907215] [2020-11-28 03:08:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:30,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17907215] [2020-11-28 03:08:30,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383079311] [2020-11-28 03:08:30,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:30,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:08:30,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:08:30,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:08:30,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 03:08:30,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:08:30,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2020-11-28 03:08:30,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301107388] [2020-11-28 03:08:30,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:08:30,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:30,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:08:30,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:08:30,182 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand 6 states. [2020-11-28 03:08:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:30,359 INFO L93 Difference]: Finished difference Result 211 states and 269 transitions. [2020-11-28 03:08:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:08:30,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-11-28 03:08:30,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:30,361 INFO L225 Difference]: With dead ends: 211 [2020-11-28 03:08:30,361 INFO L226 Difference]: Without dead ends: 171 [2020-11-28 03:08:30,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:08:30,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-28 03:08:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 157. [2020-11-28 03:08:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-28 03:08:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 201 transitions. [2020-11-28 03:08:30,372 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 201 transitions. Word has length 45 [2020-11-28 03:08:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:30,373 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 201 transitions. [2020-11-28 03:08:30,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:08:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 201 transitions. [2020-11-28 03:08:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 03:08:30,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:30,374 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:30,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 03:08:30,602 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:30,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1892120530, now seen corresponding path program 1 times [2020-11-28 03:08:30,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:30,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75833019] [2020-11-28 03:08:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:30,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75833019] [2020-11-28 03:08:30,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781424832] [2020-11-28 03:08:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:30,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:08:30,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:30,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:30,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-28 03:08:30,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289473560] [2020-11-28 03:08:30,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:08:30,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:30,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:08:30,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:08:30,827 INFO L87 Difference]: Start difference. First operand 157 states and 201 transitions. Second operand 8 states. [2020-11-28 03:08:30,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:30,948 INFO L93 Difference]: Finished difference Result 346 states and 442 transitions. [2020-11-28 03:08:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:08:30,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-11-28 03:08:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:30,951 INFO L225 Difference]: With dead ends: 346 [2020-11-28 03:08:30,951 INFO L226 Difference]: Without dead ends: 228 [2020-11-28 03:08:30,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:08:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-11-28 03:08:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 164. [2020-11-28 03:08:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-28 03:08:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2020-11-28 03:08:30,967 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 49 [2020-11-28 03:08:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:30,967 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2020-11-28 03:08:30,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:08:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2020-11-28 03:08:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 03:08:30,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:30,969 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:31,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-28 03:08:31,194 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:31,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:31,195 INFO L82 PathProgramCache]: Analyzing trace with hash -260802349, now seen corresponding path program 1 times [2020-11-28 03:08:31,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:31,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428610958] [2020-11-28 03:08:31,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:31,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428610958] [2020-11-28 03:08:31,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108468953] [2020-11-28 03:08:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/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 [2020-11-28 03:08:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:31,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 03:08:31,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:31,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:31,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-28 03:08:31,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132444909] [2020-11-28 03:08:31,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:08:31,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:31,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:08:31,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:08:31,524 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand 9 states. [2020-11-28 03:08:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:31,881 INFO L93 Difference]: Finished difference Result 276 states and 359 transitions. [2020-11-28 03:08:31,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:08:31,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-11-28 03:08:31,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:31,883 INFO L225 Difference]: With dead ends: 276 [2020-11-28 03:08:31,883 INFO L226 Difference]: Without dead ends: 176 [2020-11-28 03:08:31,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:08:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-28 03:08:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2020-11-28 03:08:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-11-28 03:08:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2020-11-28 03:08:31,895 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 51 [2020-11-28 03:08:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:31,895 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2020-11-28 03:08:31,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:08:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2020-11-28 03:08:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-28 03:08:31,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:31,896 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:32,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 03:08:32,097 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:32,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1844505351, now seen corresponding path program 2 times [2020-11-28 03:08:32,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:32,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543491199] [2020-11-28 03:08:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:32,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543491199] [2020-11-28 03:08:32,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617841146] [2020-11-28 03:08:32,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/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 [2020-11-28 03:08:32,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:08:32,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:08:32,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:08:32,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-28 03:08:32,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:08:32,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2020-11-28 03:08:32,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370154966] [2020-11-28 03:08:32,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:08:32,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:32,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:08:32,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:08:32,369 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand 7 states. [2020-11-28 03:08:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:32,645 INFO L93 Difference]: Finished difference Result 222 states and 273 transitions. [2020-11-28 03:08:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:08:32,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-11-28 03:08:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:32,647 INFO L225 Difference]: With dead ends: 222 [2020-11-28 03:08:32,647 INFO L226 Difference]: Without dead ends: 186 [2020-11-28 03:08:32,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:08:32,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-28 03:08:32,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 166. [2020-11-28 03:08:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-11-28 03:08:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 207 transitions. [2020-11-28 03:08:32,659 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 207 transitions. Word has length 52 [2020-11-28 03:08:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:32,660 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 207 transitions. [2020-11-28 03:08:32,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:08:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 207 transitions. [2020-11-28 03:08:32,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-28 03:08:32,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:32,661 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:32,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 03:08:32,874 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:32,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:32,875 INFO L82 PathProgramCache]: Analyzing trace with hash 365328708, now seen corresponding path program 1 times [2020-11-28 03:08:32,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:32,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442332053] [2020-11-28 03:08:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:32,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442332053] [2020-11-28 03:08:32,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282653108] [2020-11-28 03:08:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/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 [2020-11-28 03:08:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:33,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:08:33,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:33,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:33,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-28 03:08:33,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143985112] [2020-11-28 03:08:33,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:08:33,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:33,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:08:33,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:08:33,100 INFO L87 Difference]: Start difference. First operand 166 states and 207 transitions. Second operand 9 states. [2020-11-28 03:08:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:33,214 INFO L93 Difference]: Finished difference Result 361 states and 450 transitions. [2020-11-28 03:08:33,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:08:33,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-11-28 03:08:33,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:33,217 INFO L225 Difference]: With dead ends: 361 [2020-11-28 03:08:33,217 INFO L226 Difference]: Without dead ends: 240 [2020-11-28 03:08:33,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:08:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-11-28 03:08:33,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 173. [2020-11-28 03:08:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-11-28 03:08:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 215 transitions. [2020-11-28 03:08:33,230 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 215 transitions. Word has length 54 [2020-11-28 03:08:33,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:33,230 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 215 transitions. [2020-11-28 03:08:33,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:08:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 215 transitions. [2020-11-28 03:08:33,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-28 03:08:33,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:33,232 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:33,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:33,442 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:33,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:33,442 INFO L82 PathProgramCache]: Analyzing trace with hash 520464227, now seen corresponding path program 1 times [2020-11-28 03:08:33,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:33,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326896752] [2020-11-28 03:08:33,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-28 03:08:33,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326896752] [2020-11-28 03:08:33,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:33,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:08:33,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993734651] [2020-11-28 03:08:33,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:08:33,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:33,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:08:33,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:08:33,493 INFO L87 Difference]: Start difference. First operand 173 states and 215 transitions. Second operand 3 states. [2020-11-28 03:08:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:33,557 INFO L93 Difference]: Finished difference Result 244 states and 300 transitions. [2020-11-28 03:08:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:08:33,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-11-28 03:08:33,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:33,558 INFO L225 Difference]: With dead ends: 244 [2020-11-28 03:08:33,558 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:08:33,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:08:33,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:08:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-28 03:08:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 03:08:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-11-28 03:08:33,564 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 56 [2020-11-28 03:08:33,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:33,564 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-11-28 03:08:33,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:08:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-11-28 03:08:33,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-28 03:08:33,569 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:33,569 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:33,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-28 03:08:33,570 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:33,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:33,570 INFO L82 PathProgramCache]: Analyzing trace with hash -408520283, now seen corresponding path program 1 times [2020-11-28 03:08:33,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:33,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034596060] [2020-11-28 03:08:33,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:33,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034596060] [2020-11-28 03:08:33,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309004585] [2020-11-28 03:08:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/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 [2020-11-28 03:08:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:33,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:08:33,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:33,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:33,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-28 03:08:33,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863634449] [2020-11-28 03:08:33,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:08:33,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:33,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:08:33,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:08:33,974 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 10 states. [2020-11-28 03:08:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:34,334 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2020-11-28 03:08:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:08:34,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-11-28 03:08:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:34,336 INFO L225 Difference]: With dead ends: 126 [2020-11-28 03:08:34,336 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 03:08:34,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:08:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 03:08:34,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-11-28 03:08:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-28 03:08:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-11-28 03:08:34,344 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 58 [2020-11-28 03:08:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:34,345 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-11-28 03:08:34,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:08:34,345 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-11-28 03:08:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-28 03:08:34,346 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:34,346 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:34,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:34,566 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:34,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:34,566 INFO L82 PathProgramCache]: Analyzing trace with hash -807057443, now seen corresponding path program 1 times [2020-11-28 03:08:34,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:34,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935559288] [2020-11-28 03:08:34,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:34,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935559288] [2020-11-28 03:08:34,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299913528] [2020-11-28 03:08:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/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 [2020-11-28 03:08:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:34,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:08:34,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:34,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:08:34,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-28 03:08:34,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903483804] [2020-11-28 03:08:34,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:08:34,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:34,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:08:34,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:08:34,791 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 10 states. [2020-11-28 03:08:34,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:34,874 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-11-28 03:08:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:08:34,875 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-11-28 03:08:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:34,876 INFO L225 Difference]: With dead ends: 149 [2020-11-28 03:08:34,877 INFO L226 Difference]: Without dead ends: 103 [2020-11-28 03:08:34,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:08:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-28 03:08:34,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2020-11-28 03:08:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-28 03:08:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2020-11-28 03:08:34,885 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 59 [2020-11-28 03:08:34,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:34,885 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2020-11-28 03:08:34,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:08:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2020-11-28 03:08:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-28 03:08:34,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:34,887 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:35,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-28 03:08:35,114 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:35,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:35,114 INFO L82 PathProgramCache]: Analyzing trace with hash -2016429986, now seen corresponding path program 2 times [2020-11-28 03:08:35,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:35,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789586930] [2020-11-28 03:08:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:35,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789586930] [2020-11-28 03:08:35,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554503606] [2020-11-28 03:08:35,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/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 [2020-11-28 03:08:35,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:08:35,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:08:35,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:08:35,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:08:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-11-28 03:08:35,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:08:35,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2020-11-28 03:08:35,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650545149] [2020-11-28 03:08:35,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:08:35,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:35,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:08:35,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:08:35,747 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand 8 states. [2020-11-28 03:08:36,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:36,059 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2020-11-28 03:08:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:08:36,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-11-28 03:08:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:36,059 INFO L225 Difference]: With dead ends: 80 [2020-11-28 03:08:36,059 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:08:36,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2020-11-28 03:08:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:08:36,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:08:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:08:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:08:36,061 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-11-28 03:08:36,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:36,061 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:08:36,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:08:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:08:36,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:08:36,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:08:36,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:08:36,857 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:08:36,857 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:08:36,857 INFO L274 CegarLoopResult]: For program point L235(lines 235 244) no Hoare annotation was computed. [2020-11-28 03:08:36,857 INFO L274 CegarLoopResult]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2020-11-28 03:08:36,857 INFO L274 CegarLoopResult]: For program point L252(lines 252 256) no Hoare annotation was computed. [2020-11-28 03:08:36,857 INFO L274 CegarLoopResult]: For program point L186(lines 186 203) no Hoare annotation was computed. [2020-11-28 03:08:36,857 INFO L274 CegarLoopResult]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2020-11-28 03:08:36,858 INFO L274 CegarLoopResult]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2020-11-28 03:08:36,858 INFO L274 CegarLoopResult]: For program point L21(lines 21 26) no Hoare annotation was computed. [2020-11-28 03:08:36,858 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2020-11-28 03:08:36,858 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-11-28 03:08:36,858 INFO L274 CegarLoopResult]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2020-11-28 03:08:36,858 INFO L270 CegarLoopResult]: At program point L71(lines 20 73) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~e 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-11-28 03:08:36,859 INFO L270 CegarLoopResult]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:08:36,859 INFO L270 CegarLoopResult]: At program point L71-2(lines 20 73) the Hoare annotation is: (or (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2020-11-28 03:08:36,859 INFO L270 CegarLoopResult]: At program point L71-3(lines 20 73) the Hoare annotation is: (or (and (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-28 03:08:36,859 INFO L274 CegarLoopResult]: For program point L187(lines 187 192) no Hoare annotation was computed. [2020-11-28 03:08:36,859 INFO L274 CegarLoopResult]: For program point L171(lines 171 176) no Hoare annotation was computed. [2020-11-28 03:08:36,859 INFO L270 CegarLoopResult]: At program point L72(lines 16 74) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~e 0) (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-11-28 03:08:36,859 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-11-28 03:08:36,859 INFO L270 CegarLoopResult]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:08:36,860 INFO L270 CegarLoopResult]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2020-11-28 03:08:36,860 INFO L270 CegarLoopResult]: At program point L72-2(lines 16 74) the Hoare annotation is: (or (and (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-28 03:08:36,860 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-11-28 03:08:36,860 INFO L270 CegarLoopResult]: At program point L72-3(lines 16 74) the Hoare annotation is: (or (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~zero~0 0) (and (= |ULTIMATE.start_base2flt_#res| 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0))) [2020-11-28 03:08:36,860 INFO L270 CegarLoopResult]: At program point L39-3(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:08:36,860 INFO L274 CegarLoopResult]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-11-28 03:08:36,860 INFO L270 CegarLoopResult]: At program point L39-5(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:08:36,861 INFO L274 CegarLoopResult]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2020-11-28 03:08:36,861 INFO L270 CegarLoopResult]: At program point L39-7(lines 29 44) the Hoare annotation is: (or (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-28 03:08:36,861 INFO L274 CegarLoopResult]: For program point L238(lines 238 242) no Hoare annotation was computed. [2020-11-28 03:08:36,861 INFO L274 CegarLoopResult]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2020-11-28 03:08:36,861 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-28 03:08:36,861 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:08:36,861 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-28 03:08:36,861 INFO L270 CegarLoopResult]: At program point L208(lines 149 210) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sa~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (<= (+ ULTIMATE.start_main_~sa~0 1) 0)) [2020-11-28 03:08:36,863 INFO L274 CegarLoopResult]: For program point L27(lines 27 67) no Hoare annotation was computed. [2020-11-28 03:08:36,864 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2020-11-28 03:08:36,864 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2020-11-28 03:08:36,864 INFO L274 CegarLoopResult]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2020-11-28 03:08:36,864 INFO L270 CegarLoopResult]: At program point L209(lines 139 211) the Hoare annotation is: (or (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= |ULTIMATE.start_mulflt_#res| 0)) (and (= ULTIMATE.start_main_~sa~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sa~0 1) 0)) [2020-11-28 03:08:36,864 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:08:36,864 INFO L274 CegarLoopResult]: For program point L177(lines 177 182) no Hoare annotation was computed. [2020-11-28 03:08:36,864 INFO L274 CegarLoopResult]: For program point L195(lines 195 200) no Hoare annotation was computed. [2020-11-28 03:08:36,865 INFO L274 CegarLoopResult]: For program point L30(lines 29 44) no Hoare annotation was computed. [2020-11-28 03:08:36,865 INFO L274 CegarLoopResult]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2020-11-28 03:08:36,865 INFO L274 CegarLoopResult]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2020-11-28 03:08:36,865 INFO L274 CegarLoopResult]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2020-11-28 03:08:36,865 INFO L270 CegarLoopResult]: At program point L65(lines 27 67) the Hoare annotation is: false [2020-11-28 03:08:36,865 INFO L270 CegarLoopResult]: At program point L65-1(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:08:36,865 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:08:36,865 INFO L270 CegarLoopResult]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:08:36,865 INFO L270 CegarLoopResult]: At program point L65-3(lines 27 67) the Hoare annotation is: (or (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-28 03:08:36,866 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:08:36,866 INFO L270 CegarLoopResult]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2020-11-28 03:08:36,866 INFO L270 CegarLoopResult]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2020-11-28 03:08:36,866 INFO L270 CegarLoopResult]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:08:36,866 INFO L270 CegarLoopResult]: At program point L49-11(lines 49 64) the Hoare annotation is: (or (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-28 03:08:36,866 INFO L274 CegarLoopResult]: For program point L248(lines 248 264) no Hoare annotation was computed. [2020-11-28 03:08:36,866 INFO L277 CegarLoopResult]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2020-11-28 03:08:36,867 INFO L274 CegarLoopResult]: For program point L50(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:08:36,867 INFO L274 CegarLoopResult]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:08:36,868 INFO L274 CegarLoopResult]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:08:36,868 INFO L274 CegarLoopResult]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:08:36,868 INFO L274 CegarLoopResult]: For program point L249(lines 249 258) no Hoare annotation was computed. [2020-11-28 03:08:36,868 INFO L274 CegarLoopResult]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2020-11-28 03:08:36,868 INFO L274 CegarLoopResult]: For program point L150(lines 150 156) no Hoare annotation was computed. [2020-11-28 03:08:36,868 INFO L274 CegarLoopResult]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2020-11-28 03:08:36,868 INFO L274 CegarLoopResult]: For program point L51(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:08:36,868 INFO L274 CegarLoopResult]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:08:36,868 INFO L274 CegarLoopResult]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:08:36,869 INFO L274 CegarLoopResult]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:08:36,869 INFO L277 CegarLoopResult]: At program point L266(lines 212 268) the Hoare annotation is: true [2020-11-28 03:08:36,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:08:36 BoogieIcfgContainer [2020-11-28 03:08:36,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:08:36,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:08:36,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:08:36,918 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:08:36,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:08:21" (3/4) ... [2020-11-28 03:08:36,923 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:08:36,948 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 03:08:36,949 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 03:08:36,950 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:08:36,951 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:08:36,985 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 [2020-11-28 03:08:36,988 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == 0 && __retres4 == 0) || zero == 0 [2020-11-28 03:08:36,990 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (a == 0 || zero == 0) || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) [2020-11-28 03:08:36,992 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sa == 1 && tmp == 1)) || sa + 1 <= 0 [2020-11-28 03:08:37,063 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eb5059e3-9382-41b8-b031-8d98a8d73507/bin/uautomizer/witness.graphml [2020-11-28 03:08:37,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:08:37,065 INFO L168 Benchmark]: Toolchain (without parser) took 16921.14 ms. Allocated memory was 92.3 MB in the beginning and 151.0 MB in the end (delta: 58.7 MB). Free memory was 60.5 MB in the beginning and 100.1 MB in the end (delta: -39.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:37,066 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:08:37,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.87 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 60.3 MB in the beginning and 94.7 MB in the end (delta: -34.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:37,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.84 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 92.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:37,067 INFO L168 Benchmark]: Boogie Preprocessor took 46.89 ms. Allocated memory is still 119.5 MB. Free memory was 92.3 MB in the beginning and 91.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:37,068 INFO L168 Benchmark]: RCFGBuilder took 981.92 ms. Allocated memory is still 119.5 MB. Free memory was 90.6 MB in the beginning and 94.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:37,068 INFO L168 Benchmark]: TraceAbstraction took 15276.99 ms. Allocated memory was 119.5 MB in the beginning and 151.0 MB in the end (delta: 31.5 MB). Free memory was 94.0 MB in the beginning and 106.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 89.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:37,069 INFO L168 Benchmark]: Witness Printer took 145.52 ms. Allocated memory is still 151.0 MB. Free memory was 106.4 MB in the beginning and 100.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:37,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.87 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 60.3 MB in the beginning and 94.7 MB in the end (delta: -34.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.84 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 92.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.89 ms. Allocated memory is still 119.5 MB. Free memory was 92.3 MB in the beginning and 91.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 981.92 ms. Allocated memory is still 119.5 MB. Free memory was 90.6 MB in the beginning and 94.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15276.99 ms. Allocated memory was 119.5 MB in the beginning and 151.0 MB in the end (delta: 31.5 MB). Free memory was 94.0 MB in the beginning and 106.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 89.1 MB. Max. memory is 16.1 GB. * Witness Printer took 145.52 ms. Allocated memory is still 151.0 MB. Free memory was 106.4 MB in the beginning and 100.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 || __retres4 == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (a == 0 || zero == 0) || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((sa == 1 && tmp == 1) || (__retres10 == 0 && zero % 4294967296 <= 0)) || sa + 1 <= 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (\result == 0 && __retres4 == 0) || zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: a == 0 || zero == 0 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sa == 1 && tmp == 1)) || sa + 1 <= 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (e == 0 && __retres4 == 0) && m == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: a == 0 || zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: a == 0 || zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 248]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((zero % 4294967296 <= 0 && __retres4 == 0) || a == 0) || zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.5s, OverallIterations: 23, TraceHistogramMax: 7, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2070 SDtfs, 1284 SDslu, 5197 SDs, 0 SdLazy, 1986 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 891 GetRequests, 724 SyntacticMatches, 17 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=19, 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, 23 MinimizatonAttempts, 529 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 68 NumberOfFragments, 171 HoareAnnotationTreeSize, 24 FomulaSimplifications, 20959 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 24 FomulaSimplificationsInter, 163 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1714 NumberOfCodeBlocks, 1654 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1675 ConstructedInterpolants, 0 QuantifiedInterpolants, 169770 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2685 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 39 InterpolantComputations, 12 PerfectInterpolantSequences, 211/866 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...