./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label00.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_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label00.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/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 aa303202e206e0417727207f0e09817a035cbfbb ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:13:05,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:05,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:05,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:05,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:05,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:05,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:05,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:05,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:05,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:05,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:05,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:05,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:05,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:05,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:05,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:05,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:05,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:05,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:05,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:05,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:05,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:05,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:05,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:05,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:05,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:05,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:05,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:05,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:05,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:05,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:05,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:05,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:05,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:05,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:05,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:05,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:05,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:05,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:05,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:05,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:05,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:13:05,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:05,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:05,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:05,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:05,221 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:05,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:05,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:05,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:05,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:05,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:05,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:05,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:05,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:05,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:05,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:05,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:05,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:05,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:05,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:05,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:05,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:05,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:05,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:05,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:05,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:05,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:05,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:13:05,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:05,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:05,231 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_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa303202e206e0417727207f0e09817a035cbfbb [2020-11-28 03:13:05,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:05,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:05,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:05,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:05,593 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:05,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/../../sv-benchmarks/c/eca-rers2012/Problem01_label00.c [2020-11-28 03:13:05,702 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/data/654592f40/5872a04339b944ab8cdc43dd68f4e169/FLAG005fffead [2020-11-28 03:13:06,384 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:06,385 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/sv-benchmarks/c/eca-rers2012/Problem01_label00.c [2020-11-28 03:13:06,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/data/654592f40/5872a04339b944ab8cdc43dd68f4e169/FLAG005fffead [2020-11-28 03:13:06,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/data/654592f40/5872a04339b944ab8cdc43dd68f4e169 [2020-11-28 03:13:06,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:06,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:06,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:06,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:06,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:06,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:06" (1/1) ... [2020-11-28 03:13:06,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b549c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:06, skipping insertion in model container [2020-11-28 03:13:06,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:06" (1/1) ... [2020-11-28 03:13:06,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:06,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:07,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:07,272 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:07,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:07,497 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:07,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07 WrapperNode [2020-11-28 03:13:07,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:07,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:07,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:07,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:07,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (1/1) ... [2020-11-28 03:13:07,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (1/1) ... [2020-11-28 03:13:07,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:07,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:07,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:07,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:07,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (1/1) ... [2020-11-28 03:13:07,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (1/1) ... [2020-11-28 03:13:07,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (1/1) ... [2020-11-28 03:13:07,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (1/1) ... [2020-11-28 03:13:07,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (1/1) ... [2020-11-28 03:13:07,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (1/1) ... [2020-11-28 03:13:07,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (1/1) ... [2020-11-28 03:13:07,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:07,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:07,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:07,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:07,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/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 03:13:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:13:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:09,756 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:09,757 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:13:09,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:09 BoogieIcfgContainer [2020-11-28 03:13:09,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:09,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:09,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:09,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:09,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:06" (1/3) ... [2020-11-28 03:13:09,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ab2b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:09, skipping insertion in model container [2020-11-28 03:13:09,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:07" (2/3) ... [2020-11-28 03:13:09,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ab2b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:09, skipping insertion in model container [2020-11-28 03:13:09,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:09" (3/3) ... [2020-11-28 03:13:09,775 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-11-28 03:13:09,795 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:09,801 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:13:09,816 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:13:09,864 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:09,872 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:09,872 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:09,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:09,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:09,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:09,879 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:09,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-11-28 03:13:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-11-28 03:13:09,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:09,938 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, 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, 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 03:13:09,939 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:09,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:09,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1766677921, now seen corresponding path program 1 times [2020-11-28 03:13:09,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:09,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557197031] [2020-11-28 03:13:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:10,887 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 03:13:10,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557197031] [2020-11-28 03:13:10,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:10,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:13:10,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766338050] [2020-11-28 03:13:10,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:13:10,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:10,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:13:10,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:10,917 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 5 states. [2020-11-28 03:13:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:13,236 INFO L93 Difference]: Finished difference Result 663 states and 1179 transitions. [2020-11-28 03:13:13,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:13:13,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-11-28 03:13:13,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:13,262 INFO L225 Difference]: With dead ends: 663 [2020-11-28 03:13:13,263 INFO L226 Difference]: Without dead ends: 397 [2020-11-28 03:13:13,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:13:13,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-11-28 03:13:13,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2020-11-28 03:13:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-11-28 03:13:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 517 transitions. [2020-11-28 03:13:13,351 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 517 transitions. Word has length 108 [2020-11-28 03:13:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:13,352 INFO L481 AbstractCegarLoop]: Abstraction has 397 states and 517 transitions. [2020-11-28 03:13:13,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:13:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 517 transitions. [2020-11-28 03:13:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-28 03:13:13,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:13,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 03:13:13,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:13:13,359 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:13,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:13,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1024587764, now seen corresponding path program 1 times [2020-11-28 03:13:13,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:13,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562105394] [2020-11-28 03:13:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:13,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562105394] [2020-11-28 03:13:13,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:13,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:13,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825654759] [2020-11-28 03:13:13,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:13:13,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:13,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:13:13,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:13:13,742 INFO L87 Difference]: Start difference. First operand 397 states and 517 transitions. Second operand 4 states. [2020-11-28 03:13:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:15,032 INFO L93 Difference]: Finished difference Result 1018 states and 1433 transitions. [2020-11-28 03:13:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:13:15,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-11-28 03:13:15,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:15,042 INFO L225 Difference]: With dead ends: 1018 [2020-11-28 03:13:15,042 INFO L226 Difference]: Without dead ends: 659 [2020-11-28 03:13:15,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 03:13:15,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-11-28 03:13:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 528. [2020-11-28 03:13:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-11-28 03:13:15,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 609 transitions. [2020-11-28 03:13:15,120 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 609 transitions. Word has length 115 [2020-11-28 03:13:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:15,120 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 609 transitions. [2020-11-28 03:13:15,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:13:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 609 transitions. [2020-11-28 03:13:15,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-28 03:13:15,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:15,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 03:13:15,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:13:15,126 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:15,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:15,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1226566025, now seen corresponding path program 1 times [2020-11-28 03:13:15,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:15,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503479497] [2020-11-28 03:13:15,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:15,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503479497] [2020-11-28 03:13:15,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436319600] [2020-11-28 03:13:15,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/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 03:13:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:15,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:15,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:13:15,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:13:15,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-28 03:13:15,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770246052] [2020-11-28 03:13:15,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:15,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:15,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:15,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:15,675 INFO L87 Difference]: Start difference. First operand 528 states and 609 transitions. Second operand 3 states. [2020-11-28 03:13:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:16,869 INFO L93 Difference]: Finished difference Result 1578 states and 1822 transitions. [2020-11-28 03:13:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:16,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-11-28 03:13:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:16,883 INFO L225 Difference]: With dead ends: 1578 [2020-11-28 03:13:16,883 INFO L226 Difference]: Without dead ends: 790 [2020-11-28 03:13:16,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2020-11-28 03:13:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2020-11-28 03:13:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-11-28 03:13:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 907 transitions. [2020-11-28 03:13:16,934 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 907 transitions. Word has length 120 [2020-11-28 03:13:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:16,934 INFO L481 AbstractCegarLoop]: Abstraction has 790 states and 907 transitions. [2020-11-28 03:13:16,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:16,935 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 907 transitions. [2020-11-28 03:13:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-28 03:13:16,939 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:16,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1] [2020-11-28 03:13:17,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:13:17,165 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:17,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:17,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1215252592, now seen corresponding path program 1 times [2020-11-28 03:13:17,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:17,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683427201] [2020-11-28 03:13:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:17,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683427201] [2020-11-28 03:13:17,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:17,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:17,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942326945] [2020-11-28 03:13:17,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:13:17,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:17,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:13:17,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:13:17,293 INFO L87 Difference]: Start difference. First operand 790 states and 907 transitions. Second operand 4 states. [2020-11-28 03:13:18,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:18,509 INFO L93 Difference]: Finished difference Result 1971 states and 2313 transitions. [2020-11-28 03:13:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:13:18,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-11-28 03:13:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:18,520 INFO L225 Difference]: With dead ends: 1971 [2020-11-28 03:13:18,520 INFO L226 Difference]: Without dead ends: 1314 [2020-11-28 03:13:18,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 03:13:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-11-28 03:13:18,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1183. [2020-11-28 03:13:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-11-28 03:13:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1367 transitions. [2020-11-28 03:13:18,570 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1367 transitions. Word has length 123 [2020-11-28 03:13:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:18,571 INFO L481 AbstractCegarLoop]: Abstraction has 1183 states and 1367 transitions. [2020-11-28 03:13:18,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:13:18,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1367 transitions. [2020-11-28 03:13:18,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-11-28 03:13:18,575 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:18,575 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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, 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, 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 03:13:18,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:13:18,576 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:18,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:18,577 INFO L82 PathProgramCache]: Analyzing trace with hash 204518740, now seen corresponding path program 1 times [2020-11-28 03:13:18,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:18,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028306299] [2020-11-28 03:13:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 03:13:18,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028306299] [2020-11-28 03:13:18,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:18,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:18,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734118382] [2020-11-28 03:13:18,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:18,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:18,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:18,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:18,689 INFO L87 Difference]: Start difference. First operand 1183 states and 1367 transitions. Second operand 3 states. [2020-11-28 03:13:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:19,508 INFO L93 Difference]: Finished difference Result 2757 states and 3167 transitions. [2020-11-28 03:13:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:19,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-11-28 03:13:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:19,521 INFO L225 Difference]: With dead ends: 2757 [2020-11-28 03:13:19,521 INFO L226 Difference]: Without dead ends: 1576 [2020-11-28 03:13:19,524 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 03:13:19,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-11-28 03:13:19,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1445. [2020-11-28 03:13:19,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1445 states. [2020-11-28 03:13:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1665 transitions. [2020-11-28 03:13:19,577 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1665 transitions. Word has length 132 [2020-11-28 03:13:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:19,578 INFO L481 AbstractCegarLoop]: Abstraction has 1445 states and 1665 transitions. [2020-11-28 03:13:19,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1665 transitions. [2020-11-28 03:13:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-11-28 03:13:19,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:19,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1] [2020-11-28 03:13:19,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:13:19,585 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:19,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:19,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1999910269, now seen corresponding path program 1 times [2020-11-28 03:13:19,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:19,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971427100] [2020-11-28 03:13:19,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 03:13:19,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971427100] [2020-11-28 03:13:19,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465080681] [2020-11-28 03:13:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/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 03:13:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:19,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:19,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-28 03:13:19,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:13:19,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-28 03:13:19,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379939034] [2020-11-28 03:13:20,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:20,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:20,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:20,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:20,007 INFO L87 Difference]: Start difference. First operand 1445 states and 1665 transitions. Second operand 3 states. [2020-11-28 03:13:20,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:20,797 INFO L93 Difference]: Finished difference Result 3281 states and 3811 transitions. [2020-11-28 03:13:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:20,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-11-28 03:13:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:20,813 INFO L225 Difference]: With dead ends: 3281 [2020-11-28 03:13:20,813 INFO L226 Difference]: Without dead ends: 1838 [2020-11-28 03:13:20,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-11-28 03:13:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1576. [2020-11-28 03:13:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-11-28 03:13:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1800 transitions. [2020-11-28 03:13:20,874 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1800 transitions. Word has length 138 [2020-11-28 03:13:20,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:20,884 INFO L481 AbstractCegarLoop]: Abstraction has 1576 states and 1800 transitions. [2020-11-28 03:13:20,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:20,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1800 transitions. [2020-11-28 03:13:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-11-28 03:13:20,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:20,892 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:21,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:13:21,113 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:21,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:21,113 INFO L82 PathProgramCache]: Analyzing trace with hash -2072933007, now seen corresponding path program 1 times [2020-11-28 03:13:21,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:21,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973178417] [2020-11-28 03:13:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-11-28 03:13:21,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973178417] [2020-11-28 03:13:21,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443665998] [2020-11-28 03:13:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/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 03:13:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:21,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:21,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-28 03:13:21,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:13:21,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-28 03:13:21,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502608106] [2020-11-28 03:13:21,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:21,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:21,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:21,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:21,515 INFO L87 Difference]: Start difference. First operand 1576 states and 1800 transitions. Second operand 3 states. [2020-11-28 03:13:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:22,270 INFO L93 Difference]: Finished difference Result 4067 states and 4634 transitions. [2020-11-28 03:13:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:22,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2020-11-28 03:13:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:22,287 INFO L225 Difference]: With dead ends: 4067 [2020-11-28 03:13:22,287 INFO L226 Difference]: Without dead ends: 2493 [2020-11-28 03:13:22,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:22,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-11-28 03:13:22,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2362. [2020-11-28 03:13:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2362 states. [2020-11-28 03:13:22,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 2680 transitions. [2020-11-28 03:13:22,363 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 2680 transitions. Word has length 195 [2020-11-28 03:13:22,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:22,363 INFO L481 AbstractCegarLoop]: Abstraction has 2362 states and 2680 transitions. [2020-11-28 03:13:22,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:22,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 2680 transitions. [2020-11-28 03:13:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-11-28 03:13:22,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:22,373 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2020-11-28 03:13:22,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:13:22,601 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:22,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:22,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1162017255, now seen corresponding path program 1 times [2020-11-28 03:13:22,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:22,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395203041] [2020-11-28 03:13:22,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 86 proven. 3 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-11-28 03:13:22,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395203041] [2020-11-28 03:13:22,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100790580] [2020-11-28 03:13:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/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 03:13:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:22,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:22,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-28 03:13:23,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:13:23,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-28 03:13:23,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103619436] [2020-11-28 03:13:23,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:23,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:23,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:23,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:23,090 INFO L87 Difference]: Start difference. First operand 2362 states and 2680 transitions. Second operand 3 states. [2020-11-28 03:13:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:23,877 INFO L93 Difference]: Finished difference Result 4982 states and 5657 transitions. [2020-11-28 03:13:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:23,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2020-11-28 03:13:23,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:23,879 INFO L225 Difference]: With dead ends: 4982 [2020-11-28 03:13:23,879 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:13:23,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:13:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:13:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:13:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:13:23,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 227 [2020-11-28 03:13:23,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:23,888 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:13:23,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:13:23,889 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:13:24,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:13:24,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:13:24,294 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2020-11-28 03:13:24,400 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2020-11-28 03:13:24,404 INFO L274 CegarLoopResult]: For program point L564(line 564) no Hoare annotation was computed. [2020-11-28 03:13:24,404 INFO L274 CegarLoopResult]: For program point L531(line 531) no Hoare annotation was computed. [2020-11-28 03:13:24,404 INFO L274 CegarLoopResult]: For program point L498(line 498) no Hoare annotation was computed. [2020-11-28 03:13:24,404 INFO L274 CegarLoopResult]: For program point L465(line 465) no Hoare annotation was computed. [2020-11-28 03:13:24,404 INFO L274 CegarLoopResult]: For program point L432(line 432) no Hoare annotation was computed. [2020-11-28 03:13:24,404 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 03:13:24,404 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 03:13:24,404 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 03:13:24,404 INFO L274 CegarLoopResult]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,404 INFO L274 CegarLoopResult]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,405 INFO L274 CegarLoopResult]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,405 INFO L274 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,405 INFO L274 CegarLoopResult]: For program point L401(lines 401 403) no Hoare annotation was computed. [2020-11-28 03:13:24,405 INFO L274 CegarLoopResult]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,405 INFO L274 CegarLoopResult]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,405 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 03:13:24,405 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 03:13:24,405 INFO L274 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-11-28 03:13:24,405 INFO L274 CegarLoopResult]: For program point L534(line 534) no Hoare annotation was computed. [2020-11-28 03:13:24,405 INFO L274 CegarLoopResult]: For program point L501(line 501) no Hoare annotation was computed. [2020-11-28 03:13:24,406 INFO L274 CegarLoopResult]: For program point L468(line 468) no Hoare annotation was computed. [2020-11-28 03:13:24,406 INFO L274 CegarLoopResult]: For program point L435(line 435) no Hoare annotation was computed. [2020-11-28 03:13:24,406 INFO L274 CegarLoopResult]: For program point L402(line 402) no Hoare annotation was computed. [2020-11-28 03:13:24,406 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 03:13:24,406 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 03:13:24,406 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 03:13:24,406 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 03:13:24,406 INFO L274 CegarLoopResult]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,407 INFO L274 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,407 INFO L274 CegarLoopResult]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,407 INFO L274 CegarLoopResult]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,407 INFO L274 CegarLoopResult]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,407 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 03:13:24,407 INFO L274 CegarLoopResult]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,407 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 03:13:24,407 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 03:13:24,407 INFO L274 CegarLoopResult]: For program point L570(line 570) no Hoare annotation was computed. [2020-11-28 03:13:24,408 INFO L274 CegarLoopResult]: For program point L537(line 537) no Hoare annotation was computed. [2020-11-28 03:13:24,408 INFO L274 CegarLoopResult]: For program point L504(line 504) no Hoare annotation was computed. [2020-11-28 03:13:24,408 INFO L274 CegarLoopResult]: For program point L471(line 471) no Hoare annotation was computed. [2020-11-28 03:13:24,408 INFO L274 CegarLoopResult]: For program point L438(line 438) no Hoare annotation was computed. [2020-11-28 03:13:24,408 INFO L274 CegarLoopResult]: For program point L405(line 405) no Hoare annotation was computed. [2020-11-28 03:13:24,408 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 03:13:24,408 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 03:13:24,408 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 03:13:24,408 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 03:13:24,409 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 03:13:24,409 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 03:13:24,409 INFO L274 CegarLoopResult]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,409 INFO L274 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,409 INFO L274 CegarLoopResult]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,409 INFO L274 CegarLoopResult]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,409 INFO L274 CegarLoopResult]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,409 INFO L274 CegarLoopResult]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,409 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 03:13:24,410 INFO L274 CegarLoopResult]: For program point L573(line 573) no Hoare annotation was computed. [2020-11-28 03:13:24,410 INFO L274 CegarLoopResult]: For program point L540(line 540) no Hoare annotation was computed. [2020-11-28 03:13:24,410 INFO L274 CegarLoopResult]: For program point L507(line 507) no Hoare annotation was computed. [2020-11-28 03:13:24,410 INFO L274 CegarLoopResult]: For program point L474(line 474) no Hoare annotation was computed. [2020-11-28 03:13:24,410 INFO L274 CegarLoopResult]: For program point L441(line 441) no Hoare annotation was computed. [2020-11-28 03:13:24,410 INFO L274 CegarLoopResult]: For program point L408(line 408) no Hoare annotation was computed. [2020-11-28 03:13:24,410 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 03:13:24,410 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 03:13:24,410 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 03:13:24,411 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 03:13:24,411 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 03:13:24,411 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 03:13:24,411 INFO L274 CegarLoopResult]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,411 INFO L274 CegarLoopResult]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,411 INFO L274 CegarLoopResult]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,411 INFO L274 CegarLoopResult]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,411 INFO L274 CegarLoopResult]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,411 INFO L274 CegarLoopResult]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,412 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 03:13:24,412 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 03:13:24,412 INFO L274 CegarLoopResult]: For program point L576(line 576) no Hoare annotation was computed. [2020-11-28 03:13:24,412 INFO L274 CegarLoopResult]: For program point L543(line 543) no Hoare annotation was computed. [2020-11-28 03:13:24,412 INFO L274 CegarLoopResult]: For program point L510(line 510) no Hoare annotation was computed. [2020-11-28 03:13:24,412 INFO L274 CegarLoopResult]: For program point L477(line 477) no Hoare annotation was computed. [2020-11-28 03:13:24,412 INFO L274 CegarLoopResult]: For program point L444(line 444) no Hoare annotation was computed. [2020-11-28 03:13:24,412 INFO L274 CegarLoopResult]: For program point L411(line 411) no Hoare annotation was computed. [2020-11-28 03:13:24,412 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 03:13:24,413 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 03:13:24,413 INFO L274 CegarLoopResult]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,413 INFO L274 CegarLoopResult]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,413 INFO L274 CegarLoopResult]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,413 INFO L274 CegarLoopResult]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,413 INFO L274 CegarLoopResult]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,413 INFO L274 CegarLoopResult]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,413 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 03:13:24,413 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 03:13:24,413 INFO L274 CegarLoopResult]: For program point L579(line 579) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L546(line 546) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L513(line 513) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L480(line 480) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L447(line 447) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L414(line 414) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 03:13:24,414 INFO L274 CegarLoopResult]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L582(line 582) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L549(line 549) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L516(line 516) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L483(line 483) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L450(line 450) no Hoare annotation was computed. [2020-11-28 03:13:24,415 INFO L274 CegarLoopResult]: For program point L417(line 417) no Hoare annotation was computed. [2020-11-28 03:13:24,416 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 03:13:24,420 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a17~0 1))) (or (and (<= ~a16~0 4) .cse0) (and (not (= ~a8~0 13)) (not (= ~a7~0 1)) .cse0) (and (= ~a21~0 1) (= ~a12~0 8) (<= ~a7~0 0) (= ~a20~0 1) .cse0) (<= ~a17~0 0) (<= ~a21~0 0))) [2020-11-28 03:13:24,420 INFO L274 CegarLoopResult]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,421 INFO L274 CegarLoopResult]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,421 INFO L274 CegarLoopResult]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,421 INFO L274 CegarLoopResult]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,421 INFO L274 CegarLoopResult]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,421 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 03:13:24,421 INFO L274 CegarLoopResult]: For program point L552(line 552) no Hoare annotation was computed. [2020-11-28 03:13:24,422 INFO L274 CegarLoopResult]: For program point L519(line 519) no Hoare annotation was computed. [2020-11-28 03:13:24,422 INFO L274 CegarLoopResult]: For program point L486(line 486) no Hoare annotation was computed. [2020-11-28 03:13:24,422 INFO L274 CegarLoopResult]: For program point L453(line 453) no Hoare annotation was computed. [2020-11-28 03:13:24,422 INFO L274 CegarLoopResult]: For program point L420(line 420) no Hoare annotation was computed. [2020-11-28 03:13:24,422 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 03:13:24,422 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 03:13:24,423 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 03:13:24,423 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 03:13:24,423 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 03:13:24,423 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 03:13:24,423 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:13:24,423 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 03:13:24,424 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 03:13:24,424 INFO L274 CegarLoopResult]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,424 INFO L274 CegarLoopResult]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,424 INFO L274 CegarLoopResult]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,424 INFO L274 CegarLoopResult]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,424 INFO L274 CegarLoopResult]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,425 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 03:13:24,425 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 03:13:24,425 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 03:13:24,425 INFO L274 CegarLoopResult]: For program point L555(line 555) no Hoare annotation was computed. [2020-11-28 03:13:24,425 INFO L274 CegarLoopResult]: For program point L522(line 522) no Hoare annotation was computed. [2020-11-28 03:13:24,425 INFO L274 CegarLoopResult]: For program point L489(line 489) no Hoare annotation was computed. [2020-11-28 03:13:24,426 INFO L274 CegarLoopResult]: For program point L456(line 456) no Hoare annotation was computed. [2020-11-28 03:13:24,426 INFO L274 CegarLoopResult]: For program point L423(line 423) no Hoare annotation was computed. [2020-11-28 03:13:24,426 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 03:13:24,426 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:13:24,426 INFO L274 CegarLoopResult]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,426 INFO L274 CegarLoopResult]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,427 INFO L274 CegarLoopResult]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,427 INFO L274 CegarLoopResult]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,427 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 03:13:24,427 INFO L274 CegarLoopResult]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,427 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 03:13:24,427 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 03:13:24,428 INFO L274 CegarLoopResult]: For program point L558(line 558) no Hoare annotation was computed. [2020-11-28 03:13:24,428 INFO L274 CegarLoopResult]: For program point L525(line 525) no Hoare annotation was computed. [2020-11-28 03:13:24,428 INFO L274 CegarLoopResult]: For program point L492(line 492) no Hoare annotation was computed. [2020-11-28 03:13:24,428 INFO L274 CegarLoopResult]: For program point L459(line 459) no Hoare annotation was computed. [2020-11-28 03:13:24,428 INFO L274 CegarLoopResult]: For program point L426(line 426) no Hoare annotation was computed. [2020-11-28 03:13:24,428 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 03:13:24,429 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 03:13:24,429 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 03:13:24,429 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 03:13:24,429 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 03:13:24,429 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 03:13:24,429 INFO L274 CegarLoopResult]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,430 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a17~0 1))) (or (and (<= ~a16~0 4) .cse0) (and (not (= ~a8~0 13)) (not (= ~a7~0 1)) .cse0) (and (= ~a21~0 1) (= ~a12~0 8) (<= ~a7~0 0) (= ~a20~0 1) .cse0) (<= ~a17~0 0) (<= ~a21~0 0))) [2020-11-28 03:13:24,430 INFO L274 CegarLoopResult]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,430 INFO L274 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,430 INFO L274 CegarLoopResult]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,430 INFO L274 CegarLoopResult]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,431 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 03:13:24,431 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:13:24,431 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 03:13:24,431 INFO L274 CegarLoopResult]: For program point L561(line 561) no Hoare annotation was computed. [2020-11-28 03:13:24,431 INFO L274 CegarLoopResult]: For program point L528(line 528) no Hoare annotation was computed. [2020-11-28 03:13:24,431 INFO L274 CegarLoopResult]: For program point L495(line 495) no Hoare annotation was computed. [2020-11-28 03:13:24,432 INFO L274 CegarLoopResult]: For program point L462(line 462) no Hoare annotation was computed. [2020-11-28 03:13:24,432 INFO L274 CegarLoopResult]: For program point L429(line 429) no Hoare annotation was computed. [2020-11-28 03:13:24,432 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 03:13:24,432 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 03:13:24,432 INFO L274 CegarLoopResult]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,432 INFO L274 CegarLoopResult]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,433 INFO L274 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,433 INFO L274 CegarLoopResult]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,433 INFO L274 CegarLoopResult]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 03:13:24,433 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 03:13:24,433 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 03:13:24,433 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 03:13:24,434 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 03:13:24,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:24 BoogieIcfgContainer [2020-11-28 03:13:24,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:24,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:24,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:24,464 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:24,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:09" (3/4) ... [2020-11-28 03:13:24,471 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:13:24,500 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 03:13:24,502 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:13:24,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:13:24,506 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:13:24,713 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4d8c73d4-6109-49e6-b57c-7bb4edb6e05f/bin/uautomizer/witness.graphml [2020-11-28 03:13:24,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:24,715 INFO L168 Benchmark]: Toolchain (without parser) took 18107.42 ms. Allocated memory was 88.1 MB in the beginning and 302.0 MB in the end (delta: 213.9 MB). Free memory was 54.1 MB in the beginning and 147.0 MB in the end (delta: -92.9 MB). Peak memory consumption was 119.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,716 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 44.8 MB in the beginning and 44.7 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:24,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 881.98 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 54.0 MB in the beginning and 87.0 MB in the end (delta: -33.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.93 ms. Allocated memory is still 127.9 MB. Free memory was 87.0 MB in the beginning and 80.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,717 INFO L168 Benchmark]: Boogie Preprocessor took 130.88 ms. Allocated memory is still 127.9 MB. Free memory was 80.7 MB in the beginning and 76.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,718 INFO L168 Benchmark]: RCFGBuilder took 2011.05 ms. Allocated memory is still 127.9 MB. Free memory was 76.5 MB in the beginning and 77.0 MB in the end (delta: -500.9 kB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,718 INFO L168 Benchmark]: TraceAbstraction took 14698.52 ms. Allocated memory was 127.9 MB in the beginning and 302.0 MB in the end (delta: 174.1 MB). Free memory was 77.0 MB in the beginning and 162.8 MB in the end (delta: -85.7 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,719 INFO L168 Benchmark]: Witness Printer took 250.13 ms. Allocated memory is still 302.0 MB. Free memory was 162.8 MB in the beginning and 147.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 44.8 MB in the beginning and 44.7 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 881.98 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 54.0 MB in the beginning and 87.0 MB in the end (delta: -33.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 119.93 ms. Allocated memory is still 127.9 MB. Free memory was 87.0 MB in the beginning and 80.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 130.88 ms. Allocated memory is still 127.9 MB. Free memory was 80.7 MB in the beginning and 76.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2011.05 ms. Allocated memory is still 127.9 MB. Free memory was 76.5 MB in the beginning and 77.0 MB in the end (delta: -500.9 kB). Peak memory consumption was 52.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14698.52 ms. Allocated memory was 127.9 MB in the beginning and 302.0 MB in the end (delta: 174.1 MB). Free memory was 77.0 MB in the beginning and 162.8 MB in the end (delta: -85.7 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. * Witness Printer took 250.13 ms. Allocated memory is still 302.0 MB. Free memory was 162.8 MB in the beginning and 147.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 40]: Loop Invariant Derived loop invariant: ((((a16 <= 4 && a17 == 1) || ((!(a8 == 13) && !(a7 == 1)) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a7 <= 0) && a20 == 1) && a17 == 1)) || a17 <= 0) || a21 <= 0 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((a16 <= 4 && a17 == 1) || ((!(a8 == 13) && !(a7 == 1)) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a7 <= 0) && a20 == 1) && a17 == 1)) || a17 <= 0) || a21 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.2s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 710 SDtfs, 1206 SDslu, 73 SDs, 0 SdLazy, 3627 SolverSat, 630 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 703 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2362occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 786 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 52 NumberOfFragments, 85 HoareAnnotationTreeSize, 3 FomulaSimplifications, 770 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 180 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1838 NumberOfCodeBlocks, 1838 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1826 ConstructedInterpolants, 0 QuantifiedInterpolants, 926479 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1461 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 1003/1015 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...