./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.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_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/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 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:37:51,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:37:51,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:37:51,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:37:51,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:37:51,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:37:51,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:37:51,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:37:51,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:37:51,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:37:51,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:37:51,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:37:51,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:37:51,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:37:51,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:37:51,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:37:51,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:37:51,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:37:51,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:37:51,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:37:51,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:37:51,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:37:51,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:37:51,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:37:51,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:37:51,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:37:51,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:37:51,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:37:51,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:37:51,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:37:51,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:37:51,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:37:51,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:37:51,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:37:51,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:37:51,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:37:51,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:37:51,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:37:51,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:37:51,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:37:51,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:37:51,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:37:51,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:37:51,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:37:51,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:37:51,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:37:51,421 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:37:51,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:37:51,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:37:51,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:37:51,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:37:51,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:37:51,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:37:51,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:37:51,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:37:51,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:37:51,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:37:51,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:37:51,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:37:51,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:37:51,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:37:51,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:37:51,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:37:51,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:37:51,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:37:51,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:37:51,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:37:51,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:37:51,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:37:51,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:37:51,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:37:51,429 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_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 [2020-11-29 21:37:51,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:37:51,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:37:51,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:37:51,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:37:51,752 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:37:51,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-11-29 21:37:51,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/data/95f54fe3a/8e34003b6cfa492485b576e740e55c92/FLAG6d56b9dc1 [2020-11-29 21:37:52,308 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:37:52,308 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-11-29 21:37:52,316 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/data/95f54fe3a/8e34003b6cfa492485b576e740e55c92/FLAG6d56b9dc1 [2020-11-29 21:37:52,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/data/95f54fe3a/8e34003b6cfa492485b576e740e55c92 [2020-11-29 21:37:52,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:37:52,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:37:52,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:37:52,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:37:52,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:37:52,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:37:52" (1/1) ... [2020-11-29 21:37:52,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6d441d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:52, skipping insertion in model container [2020-11-29 21:37:52,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:37:52" (1/1) ... [2020-11-29 21:37:52,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:37:52,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:37:52,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:37:53,003 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:37:53,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:37:53,085 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:37:53,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53 WrapperNode [2020-11-29 21:37:53,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:37:53,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:37:53,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:37:53,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:37:53,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (1/1) ... [2020-11-29 21:37:53,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (1/1) ... [2020-11-29 21:37:53,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:37:53,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:37:53,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:37:53,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:37:53,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (1/1) ... [2020-11-29 21:37:53,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (1/1) ... [2020-11-29 21:37:53,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (1/1) ... [2020-11-29 21:37:53,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (1/1) ... [2020-11-29 21:37:53,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (1/1) ... [2020-11-29 21:37:53,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (1/1) ... [2020-11-29 21:37:53,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (1/1) ... [2020-11-29 21:37:53,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:37:53,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:37:53,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:37:53,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:37:53,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:37:53,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:37:53,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:37:53,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:37:53,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:37:53,976 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:37:53,976 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-11-29 21:37:53,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:37:53 BoogieIcfgContainer [2020-11-29 21:37:53,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:37:53,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:37:53,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:37:53,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:37:53,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:37:52" (1/3) ... [2020-11-29 21:37:53,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d12cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:37:53, skipping insertion in model container [2020-11-29 21:37:53,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:37:53" (2/3) ... [2020-11-29 21:37:53,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d12cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:37:53, skipping insertion in model container [2020-11-29 21:37:53,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:37:53" (3/3) ... [2020-11-29 21:37:53,988 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2020-11-29 21:37:54,000 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:37:54,015 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-11-29 21:37:54,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-11-29 21:37:54,057 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:37:54,057 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:37:54,057 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:37:54,057 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:37:54,057 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:37:54,058 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:37:54,058 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:37:54,058 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:37:54,079 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-11-29 21:37:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:37:54,085 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:54,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:54,086 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:54,093 INFO L82 PathProgramCache]: Analyzing trace with hash 124587310, now seen corresponding path program 1 times [2020-11-29 21:37:54,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:54,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647498022] [2020-11-29 21:37:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:54,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647498022] [2020-11-29 21:37:54,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:54,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:37:54,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063094202] [2020-11-29 21:37:54,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:37:54,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:54,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:37:54,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:37:54,447 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 4 states. [2020-11-29 21:37:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:54,688 INFO L93 Difference]: Finished difference Result 141 states and 182 transitions. [2020-11-29 21:37:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:37:54,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 21:37:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:54,703 INFO L225 Difference]: With dead ends: 141 [2020-11-29 21:37:54,703 INFO L226 Difference]: Without dead ends: 107 [2020-11-29 21:37:54,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-29 21:37:54,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 69. [2020-11-29 21:37:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-29 21:37:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-11-29 21:37:54,762 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 8 [2020-11-29 21:37:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:54,763 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-11-29 21:37:54,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:37:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-11-29 21:37:54,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:37:54,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:54,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:54,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:37:54,765 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:54,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:54,769 INFO L82 PathProgramCache]: Analyzing trace with hash 120339118, now seen corresponding path program 1 times [2020-11-29 21:37:54,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:54,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481787082] [2020-11-29 21:37:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:54,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481787082] [2020-11-29 21:37:54,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:54,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:37:54,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914086929] [2020-11-29 21:37:54,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:37:54,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:54,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:37:54,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:37:54,844 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 4 states. [2020-11-29 21:37:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:54,960 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-11-29 21:37:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:37:54,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 21:37:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:54,965 INFO L225 Difference]: With dead ends: 107 [2020-11-29 21:37:54,965 INFO L226 Difference]: Without dead ends: 105 [2020-11-29 21:37:54,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-29 21:37:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 67. [2020-11-29 21:37:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-29 21:37:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-11-29 21:37:54,975 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 8 [2020-11-29 21:37:54,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:54,975 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-11-29 21:37:54,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:37:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-11-29 21:37:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:37:54,977 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:54,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:54,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:37:54,977 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:54,978 INFO L82 PathProgramCache]: Analyzing trace with hash 734727036, now seen corresponding path program 1 times [2020-11-29 21:37:54,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:54,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575604806] [2020-11-29 21:37:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:55,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575604806] [2020-11-29 21:37:55,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:55,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:37:55,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526772414] [2020-11-29 21:37:55,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:37:55,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:55,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:37:55,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:55,147 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-11-29 21:37:55,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:55,302 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-11-29 21:37:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:37:55,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 21:37:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:55,305 INFO L225 Difference]: With dead ends: 69 [2020-11-29 21:37:55,305 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 21:37:55,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:55,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 21:37:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-11-29 21:37:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 21:37:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-11-29 21:37:55,321 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 11 [2020-11-29 21:37:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:55,322 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-11-29 21:37:55,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:37:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-11-29 21:37:55,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:37:55,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:55,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:55,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:37:55,327 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:55,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1269245293, now seen corresponding path program 1 times [2020-11-29 21:37:55,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:55,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535172679] [2020-11-29 21:37:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:55,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535172679] [2020-11-29 21:37:55,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:55,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:37:55,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371801419] [2020-11-29 21:37:55,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:37:55,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:55,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:37:55,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:55,404 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2020-11-29 21:37:55,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:55,591 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-11-29 21:37:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:37:55,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 21:37:55,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:55,592 INFO L225 Difference]: With dead ends: 67 [2020-11-29 21:37:55,592 INFO L226 Difference]: Without dead ends: 65 [2020-11-29 21:37:55,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-29 21:37:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-11-29 21:37:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 21:37:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-11-29 21:37:55,607 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2020-11-29 21:37:55,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:55,608 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-11-29 21:37:55,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:37:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-11-29 21:37:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:37:55,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:55,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:55,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 21:37:55,611 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:55,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1301707833, now seen corresponding path program 1 times [2020-11-29 21:37:55,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:55,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201756908] [2020-11-29 21:37:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:55,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201756908] [2020-11-29 21:37:55,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:55,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:37:55,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913007312] [2020-11-29 21:37:55,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:37:55,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:55,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:37:55,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:37:55,666 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 4 states. [2020-11-29 21:37:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:55,737 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-11-29 21:37:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:37:55,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 21:37:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:55,738 INFO L225 Difference]: With dead ends: 65 [2020-11-29 21:37:55,738 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 21:37:55,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:55,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 21:37:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-11-29 21:37:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-29 21:37:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-11-29 21:37:55,744 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 12 [2020-11-29 21:37:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:55,744 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-11-29 21:37:55,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:37:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-11-29 21:37:55,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:37:55,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:55,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:55,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 21:37:55,746 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:55,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:55,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1302317555, now seen corresponding path program 1 times [2020-11-29 21:37:55,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:55,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259962301] [2020-11-29 21:37:55,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:55,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259962301] [2020-11-29 21:37:55,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:55,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:37:55,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745035175] [2020-11-29 21:37:55,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:37:55,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:55,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:37:55,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:55,836 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2020-11-29 21:37:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:56,009 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2020-11-29 21:37:56,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:37:56,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 21:37:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:56,011 INFO L225 Difference]: With dead ends: 95 [2020-11-29 21:37:56,011 INFO L226 Difference]: Without dead ends: 93 [2020-11-29 21:37:56,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:56,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-29 21:37:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 57. [2020-11-29 21:37:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 21:37:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-11-29 21:37:56,019 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 12 [2020-11-29 21:37:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:56,019 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-11-29 21:37:56,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:37:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-11-29 21:37:56,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:37:56,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:56,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:56,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 21:37:56,022 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:56,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:56,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1302337415, now seen corresponding path program 1 times [2020-11-29 21:37:56,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:56,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838154070] [2020-11-29 21:37:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:56,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838154070] [2020-11-29 21:37:56,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:56,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:37:56,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926724546] [2020-11-29 21:37:56,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:37:56,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:56,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:37:56,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:56,089 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2020-11-29 21:37:56,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:56,279 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-11-29 21:37:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:37:56,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 21:37:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:56,281 INFO L225 Difference]: With dead ends: 100 [2020-11-29 21:37:56,281 INFO L226 Difference]: Without dead ends: 98 [2020-11-29 21:37:56,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-29 21:37:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 55. [2020-11-29 21:37:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 21:37:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-11-29 21:37:56,293 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 12 [2020-11-29 21:37:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:56,294 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-11-29 21:37:56,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:37:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-11-29 21:37:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:37:56,296 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:56,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:56,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 21:37:56,297 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:56,298 INFO L82 PathProgramCache]: Analyzing trace with hash -691892359, now seen corresponding path program 1 times [2020-11-29 21:37:56,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:56,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909179230] [2020-11-29 21:37:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:56,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909179230] [2020-11-29 21:37:56,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:56,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:37:56,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900881233] [2020-11-29 21:37:56,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:37:56,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:56,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:37:56,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:37:56,365 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 4 states. [2020-11-29 21:37:56,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:56,440 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-11-29 21:37:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:37:56,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 21:37:56,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:56,442 INFO L225 Difference]: With dead ends: 57 [2020-11-29 21:37:56,442 INFO L226 Difference]: Without dead ends: 53 [2020-11-29 21:37:56,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:56,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-29 21:37:56,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-11-29 21:37:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 21:37:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-11-29 21:37:56,448 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 12 [2020-11-29 21:37:56,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:56,448 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-11-29 21:37:56,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:37:56,448 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-11-29 21:37:56,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 21:37:56,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:56,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:56,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 21:37:56,449 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:56,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:56,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1717144761, now seen corresponding path program 1 times [2020-11-29 21:37:56,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:56,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826635015] [2020-11-29 21:37:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:56,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826635015] [2020-11-29 21:37:56,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:56,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:37:56,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320302940] [2020-11-29 21:37:56,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:37:56,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:56,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:37:56,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:56,648 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2020-11-29 21:37:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:56,871 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2020-11-29 21:37:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:37:56,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 21:37:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:56,873 INFO L225 Difference]: With dead ends: 118 [2020-11-29 21:37:56,873 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 21:37:56,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:37:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 21:37:56,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 56. [2020-11-29 21:37:56,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 21:37:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-11-29 21:37:56,885 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 13 [2020-11-29 21:37:56,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:56,885 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-11-29 21:37:56,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:37:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-11-29 21:37:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 21:37:56,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:56,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:56,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 21:37:56,887 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:56,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:56,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1717760441, now seen corresponding path program 1 times [2020-11-29 21:37:56,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:56,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334783594] [2020-11-29 21:37:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:57,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334783594] [2020-11-29 21:37:57,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:57,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:37:57,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499775183] [2020-11-29 21:37:57,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:37:57,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:57,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:37:57,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:57,083 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 6 states. [2020-11-29 21:37:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:57,308 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2020-11-29 21:37:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:37:57,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 21:37:57,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:57,313 INFO L225 Difference]: With dead ends: 116 [2020-11-29 21:37:57,313 INFO L226 Difference]: Without dead ends: 114 [2020-11-29 21:37:57,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:37:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-11-29 21:37:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 58. [2020-11-29 21:37:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-29 21:37:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-11-29 21:37:57,326 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 13 [2020-11-29 21:37:57,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:57,326 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-11-29 21:37:57,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:37:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-11-29 21:37:57,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 21:37:57,330 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:57,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:57,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 21:37:57,330 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:57,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:57,331 INFO L82 PathProgramCache]: Analyzing trace with hash 46983468, now seen corresponding path program 1 times [2020-11-29 21:37:57,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:57,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659124577] [2020-11-29 21:37:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:57,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659124577] [2020-11-29 21:37:57,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:57,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:37:57,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92372892] [2020-11-29 21:37:57,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:37:57,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:57,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:37:57,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:57,393 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 5 states. [2020-11-29 21:37:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:57,491 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-11-29 21:37:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:37:57,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 21:37:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:57,492 INFO L225 Difference]: With dead ends: 76 [2020-11-29 21:37:57,492 INFO L226 Difference]: Without dead ends: 74 [2020-11-29 21:37:57,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-29 21:37:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-11-29 21:37:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 21:37:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-11-29 21:37:57,497 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 13 [2020-11-29 21:37:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:57,497 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-11-29 21:37:57,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:37:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-11-29 21:37:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 21:37:57,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:57,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:57,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 21:37:57,498 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:57,499 INFO L82 PathProgramCache]: Analyzing trace with hash 49076780, now seen corresponding path program 1 times [2020-11-29 21:37:57,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:57,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194998196] [2020-11-29 21:37:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:57,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194998196] [2020-11-29 21:37:57,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:57,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:37:57,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493611737] [2020-11-29 21:37:57,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:37:57,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:57,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:37:57,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:57,557 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 5 states. [2020-11-29 21:37:57,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:57,663 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-11-29 21:37:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:37:57,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 21:37:57,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:57,665 INFO L225 Difference]: With dead ends: 57 [2020-11-29 21:37:57,665 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 21:37:57,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:57,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 21:37:57,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-11-29 21:37:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 21:37:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-29 21:37:57,670 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 13 [2020-11-29 21:37:57,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:57,670 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-29 21:37:57,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:37:57,670 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-29 21:37:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:37:57,671 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:57,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:57,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 21:37:57,671 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:57,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:57,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1458404191, now seen corresponding path program 1 times [2020-11-29 21:37:57,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:57,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813643917] [2020-11-29 21:37:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:57,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813643917] [2020-11-29 21:37:57,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:57,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:37:57,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902749787] [2020-11-29 21:37:57,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:37:57,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:57,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:37:57,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:57,731 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2020-11-29 21:37:57,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:57,871 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-11-29 21:37:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:37:57,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 21:37:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:57,873 INFO L225 Difference]: With dead ends: 75 [2020-11-29 21:37:57,873 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 21:37:57,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 21:37:57,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2020-11-29 21:37:57,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 21:37:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-11-29 21:37:57,878 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 14 [2020-11-29 21:37:57,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:57,878 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-29 21:37:57,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:37:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-11-29 21:37:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:37:57,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:57,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:57,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 21:37:57,885 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:57,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:57,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1456493596, now seen corresponding path program 1 times [2020-11-29 21:37:57,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:57,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099493546] [2020-11-29 21:37:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:58,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099493546] [2020-11-29 21:37:58,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:58,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:37:58,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186486295] [2020-11-29 21:37:58,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:37:58,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:58,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:37:58,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:58,027 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-11-29 21:37:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:58,184 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-11-29 21:37:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:37:58,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 21:37:58,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:58,187 INFO L225 Difference]: With dead ends: 86 [2020-11-29 21:37:58,187 INFO L226 Difference]: Without dead ends: 84 [2020-11-29 21:37:58,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:37:58,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-29 21:37:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 58. [2020-11-29 21:37:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-29 21:37:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-11-29 21:37:58,204 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 14 [2020-11-29 21:37:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:58,205 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-11-29 21:37:58,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:37:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-11-29 21:37:58,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:37:58,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:58,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:58,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 21:37:58,207 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:58,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1521386336, now seen corresponding path program 1 times [2020-11-29 21:37:58,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:58,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250757874] [2020-11-29 21:37:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:58,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250757874] [2020-11-29 21:37:58,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:58,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:37:58,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864498806] [2020-11-29 21:37:58,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:37:58,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:58,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:37:58,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:58,366 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 6 states. [2020-11-29 21:37:58,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:58,473 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-11-29 21:37:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:37:58,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 21:37:58,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:58,474 INFO L225 Difference]: With dead ends: 70 [2020-11-29 21:37:58,474 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 21:37:58,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:37:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 21:37:58,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2020-11-29 21:37:58,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-29 21:37:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-11-29 21:37:58,480 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 14 [2020-11-29 21:37:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:58,480 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-11-29 21:37:58,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:37:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-11-29 21:37:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 21:37:58,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:58,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:58,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 21:37:58,482 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:58,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:58,482 INFO L82 PathProgramCache]: Analyzing trace with hash -2034104204, now seen corresponding path program 1 times [2020-11-29 21:37:58,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:58,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54514352] [2020-11-29 21:37:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:58,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54514352] [2020-11-29 21:37:58,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:58,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:37:58,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270253711] [2020-11-29 21:37:58,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:37:58,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:58,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:37:58,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:37:58,615 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-11-29 21:37:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:58,767 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-11-29 21:37:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:37:58,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 21:37:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:58,768 INFO L225 Difference]: With dead ends: 87 [2020-11-29 21:37:58,768 INFO L226 Difference]: Without dead ends: 85 [2020-11-29 21:37:58,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:37:58,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-29 21:37:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 62. [2020-11-29 21:37:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-29 21:37:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-11-29 21:37:58,777 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 15 [2020-11-29 21:37:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:58,777 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-11-29 21:37:58,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:37:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-11-29 21:37:58,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 21:37:58,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:58,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:58,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 21:37:58,779 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash -468803585, now seen corresponding path program 1 times [2020-11-29 21:37:58,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:58,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704580842] [2020-11-29 21:37:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:58,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704580842] [2020-11-29 21:37:58,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:58,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:37:58,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85129727] [2020-11-29 21:37:58,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:37:58,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:58,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:37:58,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:37:58,852 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 4 states. [2020-11-29 21:37:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:58,921 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-11-29 21:37:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:37:58,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-29 21:37:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:58,923 INFO L225 Difference]: With dead ends: 62 [2020-11-29 21:37:58,924 INFO L226 Difference]: Without dead ends: 60 [2020-11-29 21:37:58,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-29 21:37:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-29 21:37:58,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 21:37:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-11-29 21:37:58,931 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 16 [2020-11-29 21:37:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:58,933 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-11-29 21:37:58,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:37:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-11-29 21:37:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 21:37:58,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:58,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:58,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 21:37:58,935 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:58,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1648003138, now seen corresponding path program 1 times [2020-11-29 21:37:58,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:58,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254678117] [2020-11-29 21:37:58,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:58,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254678117] [2020-11-29 21:37:58,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:37:58,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:37:58,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491134286] [2020-11-29 21:37:58,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:37:58,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:58,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:37:58,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:37:58,997 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2020-11-29 21:37:59,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:37:59,065 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-11-29 21:37:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:37:59,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 21:37:59,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:37:59,066 INFO L225 Difference]: With dead ends: 60 [2020-11-29 21:37:59,066 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 21:37:59,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:37:59,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 21:37:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-29 21:37:59,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 21:37:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-11-29 21:37:59,073 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 17 [2020-11-29 21:37:59,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:37:59,074 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-11-29 21:37:59,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:37:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-11-29 21:37:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:37:59,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:37:59,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:37:59,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 21:37:59,076 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:37:59,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:37:59,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1509691888, now seen corresponding path program 1 times [2020-11-29 21:37:59,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:37:59,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185997049] [2020-11-29 21:37:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:37:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:59,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185997049] [2020-11-29 21:37:59,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596734185] [2020-11-29 21:37:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:37:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:37:59,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 21:37:59,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:37:59,672 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:37:59,679 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 21:37:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:37:59,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:37:59,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-29 21:37:59,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442165014] [2020-11-29 21:37:59,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 21:37:59,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:37:59,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 21:37:59,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:37:59,703 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 13 states. [2020-11-29 21:38:00,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:38:00,099 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2020-11-29 21:38:00,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 21:38:00,099 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-29 21:38:00,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:38:00,101 INFO L225 Difference]: With dead ends: 121 [2020-11-29 21:38:00,101 INFO L226 Difference]: Without dead ends: 119 [2020-11-29 21:38:00,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-11-29 21:38:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-29 21:38:00,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 52. [2020-11-29 21:38:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 21:38:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-11-29 21:38:00,110 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 18 [2020-11-29 21:38:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:38:00,110 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-11-29 21:38:00,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 21:38:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-11-29 21:38:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:38:00,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:38:00,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:38:00,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:38:00,332 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:38:00,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:38:00,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1509076208, now seen corresponding path program 1 times [2020-11-29 21:38:00,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:38:00,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520014230] [2020-11-29 21:38:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:38:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:38:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:38:00,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520014230] [2020-11-29 21:38:00,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632256678] [2020-11-29 21:38:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:38:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:38:00,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 21:38:00,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:38:00,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:38:00,718 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 21:38:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:38:00,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:38:00,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-29 21:38:00,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997599055] [2020-11-29 21:38:00,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 21:38:00,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:38:00,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 21:38:00,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:38:00,742 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 13 states. [2020-11-29 21:38:01,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:38:01,180 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2020-11-29 21:38:01,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 21:38:01,180 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-29 21:38:01,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:38:01,181 INFO L225 Difference]: With dead ends: 100 [2020-11-29 21:38:01,181 INFO L226 Difference]: Without dead ends: 98 [2020-11-29 21:38:01,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-11-29 21:38:01,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-29 21:38:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 45. [2020-11-29 21:38:01,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 21:38:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-11-29 21:38:01,194 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 18 [2020-11-29 21:38:01,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:38:01,194 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-11-29 21:38:01,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 21:38:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-11-29 21:38:01,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:38:01,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:38:01,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:38:01,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:38:01,412 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:38:01,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:38:01,413 INFO L82 PathProgramCache]: Analyzing trace with hash 470387004, now seen corresponding path program 1 times [2020-11-29 21:38:01,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:38:01,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129935572] [2020-11-29 21:38:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:38:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:38:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:38:01,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129935572] [2020-11-29 21:38:01,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:38:01,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:38:01,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453014873] [2020-11-29 21:38:01,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:38:01,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:38:01,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:38:01,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:38:01,531 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 6 states. [2020-11-29 21:38:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:38:01,708 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-11-29 21:38:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:38:01,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-29 21:38:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:38:01,710 INFO L225 Difference]: With dead ends: 60 [2020-11-29 21:38:01,710 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 21:38:01,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:38:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 21:38:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 40. [2020-11-29 21:38:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 21:38:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-11-29 21:38:01,716 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 18 [2020-11-29 21:38:01,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:38:01,716 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-11-29 21:38:01,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:38:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-11-29 21:38:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:38:01,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:38:01,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:38:01,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 21:38:01,718 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:38:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:38:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash -543024337, now seen corresponding path program 1 times [2020-11-29 21:38:01,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:38:01,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994953002] [2020-11-29 21:38:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:38:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:38:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:38:01,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994953002] [2020-11-29 21:38:01,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:38:01,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 21:38:01,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190999500] [2020-11-29 21:38:01,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:38:01,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:38:01,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:38:01,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:38:01,812 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-11-29 21:38:01,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:38:01,931 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-11-29 21:38:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:38:01,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 21:38:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:38:01,935 INFO L225 Difference]: With dead ends: 52 [2020-11-29 21:38:01,935 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 21:38:01,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:38:01,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 21:38:01,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-11-29 21:38:01,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 21:38:01,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-11-29 21:38:01,940 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 19 [2020-11-29 21:38:01,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:38:01,940 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-11-29 21:38:01,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:38:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-11-29 21:38:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:38:01,940 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:38:01,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:38:01,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 21:38:01,941 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:38:01,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:38:01,941 INFO L82 PathProgramCache]: Analyzing trace with hash -478131597, now seen corresponding path program 1 times [2020-11-29 21:38:01,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:38:01,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073592582] [2020-11-29 21:38:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:38:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:38:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:38:02,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073592582] [2020-11-29 21:38:02,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:38:02,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 21:38:02,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222620451] [2020-11-29 21:38:02,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:38:02,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:38:02,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:38:02,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:38:02,065 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 7 states. [2020-11-29 21:38:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:38:02,166 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-11-29 21:38:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:38:02,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 21:38:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:38:02,167 INFO L225 Difference]: With dead ends: 35 [2020-11-29 21:38:02,167 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:38:02,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:38:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:38:02,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:38:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:38:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:38:02,168 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-29 21:38:02,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:38:02,168 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:38:02,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:38:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:38:02,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:38:02,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 21:38:02,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 21:38:02,505 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-11-29 21:38:02,821 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 24 [2020-11-29 21:38:03,392 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 33 [2020-11-29 21:38:03,394 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,394 INFO L274 CegarLoopResult]: For program point L234(lines 234 242) no Hoare annotation was computed. [2020-11-29 21:38:03,395 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,395 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 21:38:03,395 INFO L274 CegarLoopResult]: For program point L152(lines 152 160) no Hoare annotation was computed. [2020-11-29 21:38:03,395 INFO L274 CegarLoopResult]: For program point L20(lines 20 401) no Hoare annotation was computed. [2020-11-29 21:38:03,395 INFO L277 CegarLoopResult]: At program point L400(lines 15 402) the Hoare annotation is: true [2020-11-29 21:38:03,395 INFO L274 CegarLoopResult]: For program point L70(lines 70 94) no Hoare annotation was computed. [2020-11-29 21:38:03,395 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,395 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,395 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,397 INFO L274 CegarLoopResult]: For program point L4-3(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,397 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,397 INFO L270 CegarLoopResult]: At program point L384(lines 282 391) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse2 .cse1) (and .cse2 (<= 1 ULTIMATE.start_main_~main__t~0)))))) (or (and .cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse1) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~19) .cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~18 0)))))) [2020-11-29 21:38:03,397 INFO L274 CegarLoopResult]: For program point L4-5(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,399 INFO L270 CegarLoopResult]: At program point L351(lines 32 395) the Hoare annotation is: (or (and (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~main__t~0 0)) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (let ((.cse2 (<= ULTIMATE.start_main_~main__t~0 1))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17)) (.cse1 (let ((.cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0))) (.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0))) (.cse5 (<= 1 ULTIMATE.start_main_~main__t~0))) (or (and .cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~19 0)) .cse4 .cse5) (and .cse3 .cse4 .cse5 .cse2))))) (or (and (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~19) .cse0 .cse1) (and .cse2 .cse0 .cse1)))))) [2020-11-29 21:38:03,399 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,400 INFO L274 CegarLoopResult]: For program point L4-7(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,400 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,400 INFO L274 CegarLoopResult]: For program point L4-9(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,400 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,400 INFO L274 CegarLoopResult]: For program point L186(lines 186 196) no Hoare annotation was computed. [2020-11-29 21:38:03,400 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,400 INFO L274 CegarLoopResult]: For program point L4-11(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,401 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,401 INFO L274 CegarLoopResult]: For program point L4-13(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,401 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,401 INFO L274 CegarLoopResult]: For program point L4-15(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,401 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,401 INFO L274 CegarLoopResult]: For program point L4-17(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,402 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,402 INFO L274 CegarLoopResult]: For program point L4-19(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,402 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,402 INFO L274 CegarLoopResult]: For program point L4-21(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,402 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,402 INFO L274 CegarLoopResult]: For program point L4-23(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,402 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,403 INFO L274 CegarLoopResult]: For program point L4-25(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,403 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,403 INFO L274 CegarLoopResult]: For program point L4-27(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,403 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,404 INFO L274 CegarLoopResult]: For program point L4-29(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,404 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,404 INFO L274 CegarLoopResult]: For program point L4-31(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,404 INFO L274 CegarLoopResult]: For program point L4-32(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,404 INFO L274 CegarLoopResult]: For program point L4-33(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,404 INFO L274 CegarLoopResult]: For program point L4-34(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,404 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,405 INFO L274 CegarLoopResult]: For program point L4-35(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,405 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,405 INFO L274 CegarLoopResult]: For program point L105(lines 105 209) no Hoare annotation was computed. [2020-11-29 21:38:03,405 INFO L274 CegarLoopResult]: For program point L39(lines 39 255) no Hoare annotation was computed. [2020-11-29 21:38:03,405 INFO L274 CegarLoopResult]: For program point L288(lines 288 390) no Hoare annotation was computed. [2020-11-29 21:38:03,405 INFO L274 CegarLoopResult]: For program point L222(lines 222 244) no Hoare annotation was computed. [2020-11-29 21:38:03,406 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,406 INFO L274 CegarLoopResult]: For program point L24(lines 24 396) no Hoare annotation was computed. [2020-11-29 21:38:03,406 INFO L274 CegarLoopResult]: For program point L140(lines 140 162) no Hoare annotation was computed. [2020-11-29 21:38:03,406 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 21:38:03,406 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,406 INFO L274 CegarLoopResult]: For program point L124(lines 124 201) no Hoare annotation was computed. [2020-11-29 21:38:03,406 INFO L274 CegarLoopResult]: For program point L174(lines 174 198) no Hoare annotation was computed. [2020-11-29 21:38:03,407 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,407 INFO L274 CegarLoopResult]: For program point L307(lines 307 315) no Hoare annotation was computed. [2020-11-29 21:38:03,407 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,407 INFO L274 CegarLoopResult]: For program point L324(lines 324 389) no Hoare annotation was computed. [2020-11-29 21:38:03,407 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,407 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,408 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 21:38:03,408 INFO L274 CegarLoopResult]: For program point L276(lines 276 391) no Hoare annotation was computed. [2020-11-29 21:38:03,408 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,408 INFO L274 CegarLoopResult]: For program point L376(lines 376 385) no Hoare annotation was computed. [2020-11-29 21:38:03,409 INFO L274 CegarLoopResult]: For program point L343(lines 343 352) no Hoare annotation was computed. [2020-11-29 21:38:03,409 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,409 INFO L274 CegarLoopResult]: For program point L112(lines 112 203) no Hoare annotation was computed. [2020-11-29 21:38:03,409 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,410 INFO L270 CegarLoopResult]: At program point L195(lines 56 253) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-11-29 21:38:03,410 INFO L274 CegarLoopResult]: For program point L295(lines 295 317) no Hoare annotation was computed. [2020-11-29 21:38:03,410 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,410 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,410 INFO L274 CegarLoopResult]: For program point L32(lines 32 395) no Hoare annotation was computed. [2020-11-29 21:38:03,410 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 21:38:03,412 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,412 INFO L274 CegarLoopResult]: For program point L82(lines 82 92) no Hoare annotation was computed. [2020-11-29 21:38:03,412 INFO L277 CegarLoopResult]: At program point L314(lines 32 395) the Hoare annotation is: true [2020-11-29 21:38:03,412 INFO L274 CegarLoopResult]: For program point L215(lines 215 250) no Hoare annotation was computed. [2020-11-29 21:38:03,413 INFO L274 CegarLoopResult]: For program point L50(lines 50 253) no Hoare annotation was computed. [2020-11-29 21:38:03,413 INFO L274 CegarLoopResult]: For program point L364(lines 364 387) no Hoare annotation was computed. [2020-11-29 21:38:03,413 INFO L274 CegarLoopResult]: For program point L331(lines 331 354) no Hoare annotation was computed. [2020-11-29 21:38:03,413 INFO L274 CegarLoopResult]: For program point L265(lines 265 393) no Hoare annotation was computed. [2020-11-29 21:38:03,413 INFO L274 CegarLoopResult]: For program point L133(lines 133 200) no Hoare annotation was computed. [2020-11-29 21:38:03,413 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-29 21:38:03,414 INFO L270 CegarLoopResult]: At program point L249(lines 101 251) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0)) [2020-11-29 21:38:03,414 INFO L274 CegarLoopResult]: For program point L101(lines 101 251) no Hoare annotation was computed. [2020-11-29 21:38:03,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:38:03 BoogieIcfgContainer [2020-11-29 21:38:03,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:38:03,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:38:03,453 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:38:03,454 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:38:03,454 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:37:53" (3/4) ... [2020-11-29 21:38:03,457 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:38:03,480 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 21:38:03,481 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:38:03,481 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:38:03,482 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:38:03,581 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_37bad0d2-08f4-4a1a-89a7-1b68eb45e539/bin/uautomizer/witness.graphml [2020-11-29 21:38:03,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:38:03,582 INFO L168 Benchmark]: Toolchain (without parser) took 10891.44 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 79.2 MB in the beginning and 53.2 MB in the end (delta: 25.9 MB). Peak memory consumption was 70.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:38:03,583 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 62.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:38:03,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.17 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 78.7 MB in the end (delta: 282.0 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:38:03,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.68 ms. Allocated memory is still 104.9 MB. Free memory was 78.5 MB in the beginning and 76.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:38:03,584 INFO L168 Benchmark]: Boogie Preprocessor took 75.26 ms. Allocated memory is still 104.9 MB. Free memory was 76.4 MB in the beginning and 75.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:38:03,585 INFO L168 Benchmark]: RCFGBuilder took 747.57 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 75.0 MB in the beginning and 102.3 MB in the end (delta: -27.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:38:03,585 INFO L168 Benchmark]: TraceAbstraction took 9472.98 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 101.9 MB in the beginning and 59.5 MB in the end (delta: 42.4 MB). Peak memory consumption was 89.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:38:03,587 INFO L168 Benchmark]: Witness Printer took 127.82 ms. Allocated memory is still 151.0 MB. Free memory was 59.5 MB in the beginning and 53.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 21:38:03,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 62.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.17 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 78.7 MB in the end (delta: 282.0 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.68 ms. Allocated memory is still 104.9 MB. Free memory was 78.5 MB in the beginning and 76.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.26 ms. Allocated memory is still 104.9 MB. Free memory was 76.4 MB in the beginning and 75.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 747.57 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 75.0 MB in the beginning and 102.3 MB in the end (delta: -27.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9472.98 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 101.9 MB in the beginning and 59.5 MB in the end (delta: 42.4 MB). Peak memory consumption was 89.7 MB. Max. memory is 16.1 GB. * Witness Printer took 127.82 ms. Allocated memory is still 151.0 MB. Free memory was 59.5 MB in the beginning and 53.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 282]: Loop Invariant Derived loop invariant: ((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && 0 < main__tagbuf_len) && main__t == 0) || (((main__t < main__tagbuf_len && 1 <= __VERIFIER_assert__cond) && ((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t))) && !(__VERIFIER_assert__cond == 0)) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (0 < main__tagbuf_len && main__t == 0) || (main__t < main__tagbuf_len && (((1 <= __VERIFIER_assert__cond && 1 <= __VERIFIER_assert__cond) && ((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) || (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && main__t <= 1))) || ((main__t <= 1 && 1 <= __VERIFIER_assert__cond) && ((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) || (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && main__t <= 1))))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.1s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1024 SDtfs, 1889 SDslu, 1684 SDs, 0 SdLazy, 1955 SolverSat, 234 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 528 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 12 NumberOfFragments, 160 HoareAnnotationTreeSize, 6 FomulaSimplifications, 19039930 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 6 FomulaSimplificationsInter, 5050613 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 18287 SizeOfPredicates, 8 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 25 InterpolantComputations, 21 PerfectInterpolantSequences, 4/16 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...