./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_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/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_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/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 [2020-11-28 03:15:58,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:15:58,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:15:58,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:15:58,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:15:58,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:15:58,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:15:58,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:15:58,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:15:58,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:15:58,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:15:58,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:15:58,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:15:58,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:15:58,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:15:58,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:15:58,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:15:58,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:15:58,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:15:58,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:15:58,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:15:58,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:15:58,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:15:58,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:15:58,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:15:58,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:15:58,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:15:58,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:15:58,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:15:58,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:15:58,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:15:58,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:15:58,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:15:58,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:15:58,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:15:58,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:15:58,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:15:58,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:15:58,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:15:58,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:15:58,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:15:58,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:15:58,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:15:58,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:15:58,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:15:58,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:15:58,418 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:15:58,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:15:58,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:15:58,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:15:58,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:15:58,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:15:58,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:15:58,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:15:58,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:15:58,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:15:58,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:15:58,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:15:58,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:15:58,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:15:58,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:15:58,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:15:58,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:15:58,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:15:58,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:15:58,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:15:58,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:15:58,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:15:58,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:15:58,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:15:58,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:15:58,426 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_d175de9b-0db3-4407-8e97-ea415e0c9d11/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 [2020-11-28 03:15:58,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:15:58,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:15:58,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:15:58,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:15:58,767 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:15:58,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-11-28 03:15:58,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/data/9d7cf54de/c6ee76b729c045ed8cbfe4e76ed0aafc/FLAGfdd0dbba2 [2020-11-28 03:15:59,342 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:15:59,343 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-11-28 03:15:59,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/data/9d7cf54de/c6ee76b729c045ed8cbfe4e76ed0aafc/FLAGfdd0dbba2 [2020-11-28 03:15:59,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/data/9d7cf54de/c6ee76b729c045ed8cbfe4e76ed0aafc [2020-11-28 03:15:59,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:15:59,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:15:59,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:59,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:15:59,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:15:59,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72895356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59, skipping insertion in model container [2020-11-28 03:15:59,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:59" (1/1) ... [2020-11-28 03:15:59,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:15:59,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:00,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:00,098 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:00,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:00,199 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:00,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00 WrapperNode [2020-11-28 03:16:00,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:00,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:00,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:00,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:00,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (1/1) ... [2020-11-28 03:16:00,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (1/1) ... [2020-11-28 03:16:00,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:00,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:00,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:00,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:00,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (1/1) ... [2020-11-28 03:16:00,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (1/1) ... [2020-11-28 03:16:00,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (1/1) ... [2020-11-28 03:16:00,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (1/1) ... [2020-11-28 03:16:00,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (1/1) ... [2020-11-28 03:16:00,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (1/1) ... [2020-11-28 03:16:00,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (1/1) ... [2020-11-28 03:16:00,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:00,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:00,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:00,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:00,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:00,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:00,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:00,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:00,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:01,138 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:01,139 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-11-28 03:16:01,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:01 BoogieIcfgContainer [2020-11-28 03:16:01,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:01,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:01,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:01,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:01,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:59" (1/3) ... [2020-11-28 03:16:01,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec994ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:01, skipping insertion in model container [2020-11-28 03:16:01,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:00" (2/3) ... [2020-11-28 03:16:01,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec994ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:01, skipping insertion in model container [2020-11-28 03:16:01,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:01" (3/3) ... [2020-11-28 03:16:01,155 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2020-11-28 03:16:01,171 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:01,176 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-11-28 03:16:01,189 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-11-28 03:16:01,231 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:01,232 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:16:01,232 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:01,232 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:01,232 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:01,233 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:01,233 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:01,233 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-11-28 03:16:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:16:01,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:01,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:01,278 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]=== [2020-11-28 03:16:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:01,285 INFO L82 PathProgramCache]: Analyzing trace with hash 124587310, now seen corresponding path program 1 times [2020-11-28 03:16:01,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:01,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546781650] [2020-11-28 03:16:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:01,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546781650] [2020-11-28 03:16:01,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:01,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:01,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141165553] [2020-11-28 03:16:01,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:01,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:01,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:01,606 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 4 states. [2020-11-28 03:16:01,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:01,817 INFO L93 Difference]: Finished difference Result 141 states and 182 transitions. [2020-11-28 03:16:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:01,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:16:01,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:01,830 INFO L225 Difference]: With dead ends: 141 [2020-11-28 03:16:01,830 INFO L226 Difference]: Without dead ends: 107 [2020-11-28 03:16:01,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-28 03:16:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 69. [2020-11-28 03:16:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-28 03:16:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-11-28 03:16:01,895 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 8 [2020-11-28 03:16:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:01,896 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-11-28 03:16:01,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-11-28 03:16:01,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:16:01,897 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:01,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:01,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:01,897 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]=== [2020-11-28 03:16:01,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:01,898 INFO L82 PathProgramCache]: Analyzing trace with hash 120339118, now seen corresponding path program 1 times [2020-11-28 03:16:01,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:01,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153392636] [2020-11-28 03:16:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:01,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153392636] [2020-11-28 03:16:01,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:01,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:01,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849191689] [2020-11-28 03:16:01,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:01,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:01,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:01,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:01,959 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 4 states. [2020-11-28 03:16:02,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:02,051 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-11-28 03:16:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:02,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:16:02,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:02,053 INFO L225 Difference]: With dead ends: 107 [2020-11-28 03:16:02,053 INFO L226 Difference]: Without dead ends: 105 [2020-11-28 03:16:02,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:02,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-28 03:16:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 67. [2020-11-28 03:16:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-28 03:16:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-11-28 03:16:02,063 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 8 [2020-11-28 03:16:02,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:02,063 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-11-28 03:16:02,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:02,063 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-11-28 03:16:02,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:16:02,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:02,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:02,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:16:02,065 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]=== [2020-11-28 03:16:02,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:02,065 INFO L82 PathProgramCache]: Analyzing trace with hash 734727036, now seen corresponding path program 1 times [2020-11-28 03:16:02,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:02,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409735282] [2020-11-28 03:16:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:02,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409735282] [2020-11-28 03:16:02,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:02,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:02,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540359868] [2020-11-28 03:16:02,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:02,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:02,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:02,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:02,176 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-11-28 03:16:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:02,323 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-11-28 03:16:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:02,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:16:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:02,325 INFO L225 Difference]: With dead ends: 69 [2020-11-28 03:16:02,326 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 03:16:02,326 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 [2020-11-28 03:16:02,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 03:16:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-11-28 03:16:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 03:16:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-11-28 03:16:02,333 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 11 [2020-11-28 03:16:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:02,333 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-11-28 03:16:02,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-11-28 03:16:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:16:02,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:02,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:02,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:16:02,335 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]=== [2020-11-28 03:16:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:02,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1269245293, now seen corresponding path program 1 times [2020-11-28 03:16:02,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:02,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680043775] [2020-11-28 03:16:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:02,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680043775] [2020-11-28 03:16:02,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:02,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:02,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443664147] [2020-11-28 03:16:02,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:02,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:02,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:02,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:02,436 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2020-11-28 03:16:02,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:02,579 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-11-28 03:16:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:02,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:16:02,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:02,582 INFO L225 Difference]: With dead ends: 67 [2020-11-28 03:16:02,582 INFO L226 Difference]: Without dead ends: 65 [2020-11-28 03:16:02,583 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 [2020-11-28 03:16:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-28 03:16:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-11-28 03:16:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-28 03:16:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-11-28 03:16:02,590 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2020-11-28 03:16:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:02,590 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-11-28 03:16:02,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-11-28 03:16:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:16:02,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:02,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:02,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:16:02,592 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]=== [2020-11-28 03:16:02,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:02,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1301707833, now seen corresponding path program 1 times [2020-11-28 03:16:02,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:02,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760247820] [2020-11-28 03:16:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:02,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760247820] [2020-11-28 03:16:02,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:02,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:02,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575000876] [2020-11-28 03:16:02,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:02,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:02,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:02,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:02,653 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 4 states. [2020-11-28 03:16:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:02,739 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-11-28 03:16:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:02,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:16:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:02,741 INFO L225 Difference]: With dead ends: 65 [2020-11-28 03:16:02,741 INFO L226 Difference]: Without dead ends: 61 [2020-11-28 03:16:02,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:02,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-28 03:16:02,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-11-28 03:16:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 03:16:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-11-28 03:16:02,748 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 12 [2020-11-28 03:16:02,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:02,748 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-11-28 03:16:02,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:02,748 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-11-28 03:16:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:16:02,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:02,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:02,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:16:02,750 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]=== [2020-11-28 03:16:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:02,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1302317555, now seen corresponding path program 1 times [2020-11-28 03:16:02,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:02,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575590492] [2020-11-28 03:16:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:02,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575590492] [2020-11-28 03:16:02,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:02,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:02,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977926432] [2020-11-28 03:16:02,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:02,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:02,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:02,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:02,842 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2020-11-28 03:16:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:02,994 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2020-11-28 03:16:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:02,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:16:02,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:02,995 INFO L225 Difference]: With dead ends: 95 [2020-11-28 03:16:02,996 INFO L226 Difference]: Without dead ends: 93 [2020-11-28 03:16:02,996 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 [2020-11-28 03:16:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-28 03:16:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 57. [2020-11-28 03:16:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:16:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-11-28 03:16:03,003 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 12 [2020-11-28 03:16:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:03,003 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-11-28 03:16:03,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-11-28 03:16:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:16:03,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:03,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:03,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:16:03,008 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]=== [2020-11-28 03:16:03,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:03,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1302337415, now seen corresponding path program 1 times [2020-11-28 03:16:03,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:03,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727298795] [2020-11-28 03:16:03,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:03,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727298795] [2020-11-28 03:16:03,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:03,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:03,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390301891] [2020-11-28 03:16:03,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:03,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:03,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:03,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:03,093 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2020-11-28 03:16:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:03,322 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-11-28 03:16:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:03,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:16:03,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:03,331 INFO L225 Difference]: With dead ends: 100 [2020-11-28 03:16:03,331 INFO L226 Difference]: Without dead ends: 98 [2020-11-28 03:16:03,332 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 [2020-11-28 03:16:03,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-28 03:16:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 55. [2020-11-28 03:16:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 03:16:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-11-28 03:16:03,339 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 12 [2020-11-28 03:16:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:03,339 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-11-28 03:16:03,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:03,339 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-11-28 03:16:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:16:03,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:03,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:03,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:16:03,340 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]=== [2020-11-28 03:16:03,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:03,341 INFO L82 PathProgramCache]: Analyzing trace with hash -691892359, now seen corresponding path program 1 times [2020-11-28 03:16:03,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:03,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961592421] [2020-11-28 03:16:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:03,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961592421] [2020-11-28 03:16:03,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:03,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:03,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301452208] [2020-11-28 03:16:03,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:03,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:03,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:03,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:03,428 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 4 states. [2020-11-28 03:16:03,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:03,508 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-11-28 03:16:03,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:03,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:16:03,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:03,510 INFO L225 Difference]: With dead ends: 57 [2020-11-28 03:16:03,510 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 03:16:03,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 03:16:03,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-11-28 03:16:03,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 03:16:03,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-11-28 03:16:03,515 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 12 [2020-11-28 03:16:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:03,515 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-11-28 03:16:03,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-11-28 03:16:03,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:16:03,516 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:03,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:03,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:16:03,517 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]=== [2020-11-28 03:16:03,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:03,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1717144761, now seen corresponding path program 1 times [2020-11-28 03:16:03,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:03,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357792437] [2020-11-28 03:16:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:03,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357792437] [2020-11-28 03:16:03,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:03,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:03,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330842357] [2020-11-28 03:16:03,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:03,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:03,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:03,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:03,686 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2020-11-28 03:16:03,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:03,862 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2020-11-28 03:16:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:16:03,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 03:16:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:03,865 INFO L225 Difference]: With dead ends: 118 [2020-11-28 03:16:03,865 INFO L226 Difference]: Without dead ends: 116 [2020-11-28 03:16:03,865 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 [2020-11-28 03:16:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-28 03:16:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 56. [2020-11-28 03:16:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:16:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-11-28 03:16:03,880 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 13 [2020-11-28 03:16:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:03,881 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-11-28 03:16:03,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-11-28 03:16:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:16:03,882 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:03,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:03,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:16:03,883 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]=== [2020-11-28 03:16:03,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:03,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1717760441, now seen corresponding path program 1 times [2020-11-28 03:16:03,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:03,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249967058] [2020-11-28 03:16:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:04,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249967058] [2020-11-28 03:16:04,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:04,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:04,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552648511] [2020-11-28 03:16:04,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:04,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:04,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:04,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:04,033 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 6 states. [2020-11-28 03:16:04,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:04,268 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2020-11-28 03:16:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:16:04,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 03:16:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:04,274 INFO L225 Difference]: With dead ends: 116 [2020-11-28 03:16:04,274 INFO L226 Difference]: Without dead ends: 114 [2020-11-28 03:16:04,275 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 [2020-11-28 03:16:04,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-11-28 03:16:04,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 58. [2020-11-28 03:16:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 03:16:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-11-28 03:16:04,284 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 13 [2020-11-28 03:16:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:04,284 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-11-28 03:16:04,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-11-28 03:16:04,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:16:04,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:04,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:04,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:16:04,286 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]=== [2020-11-28 03:16:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:04,287 INFO L82 PathProgramCache]: Analyzing trace with hash 46983468, now seen corresponding path program 1 times [2020-11-28 03:16:04,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:04,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90696928] [2020-11-28 03:16:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:04,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90696928] [2020-11-28 03:16:04,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:04,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:04,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639763087] [2020-11-28 03:16:04,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:04,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:04,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:04,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:04,363 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 5 states. [2020-11-28 03:16:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:04,481 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-11-28 03:16:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:04,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:16:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:04,483 INFO L225 Difference]: With dead ends: 76 [2020-11-28 03:16:04,483 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:16:04,483 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 [2020-11-28 03:16:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:16:04,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-11-28 03:16:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:16:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-11-28 03:16:04,489 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 13 [2020-11-28 03:16:04,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:04,489 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-11-28 03:16:04,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-11-28 03:16:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:16:04,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:04,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:04,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:16:04,491 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]=== [2020-11-28 03:16:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:04,491 INFO L82 PathProgramCache]: Analyzing trace with hash 49076780, now seen corresponding path program 1 times [2020-11-28 03:16:04,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:04,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337152302] [2020-11-28 03:16:04,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:04,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337152302] [2020-11-28 03:16:04,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:04,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:04,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044562826] [2020-11-28 03:16:04,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:04,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:04,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:04,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:04,565 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 5 states. [2020-11-28 03:16:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:04,697 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-11-28 03:16:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:04,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:16:04,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:04,701 INFO L225 Difference]: With dead ends: 57 [2020-11-28 03:16:04,701 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 03:16:04,702 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 [2020-11-28 03:16:04,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 03:16:04,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-11-28 03:16:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 03:16:04,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-28 03:16:04,706 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 13 [2020-11-28 03:16:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:04,706 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-28 03:16:04,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:04,707 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-28 03:16:04,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:16:04,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:04,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:04,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:16:04,708 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]=== [2020-11-28 03:16:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:04,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1458404191, now seen corresponding path program 1 times [2020-11-28 03:16:04,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:04,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635575219] [2020-11-28 03:16:04,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:04,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635575219] [2020-11-28 03:16:04,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:04,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:04,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378112877] [2020-11-28 03:16:04,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:04,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:04,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:04,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:04,788 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2020-11-28 03:16:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:04,929 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-11-28 03:16:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:04,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 03:16:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:04,931 INFO L225 Difference]: With dead ends: 75 [2020-11-28 03:16:04,931 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 03:16:04,931 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 [2020-11-28 03:16:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 03:16:04,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2020-11-28 03:16:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 03:16:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-11-28 03:16:04,937 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 14 [2020-11-28 03:16:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:04,937 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-28 03:16:04,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-11-28 03:16:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:16:04,939 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:04,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:04,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:16:04,939 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]=== [2020-11-28 03:16:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:04,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1456493596, now seen corresponding path program 1 times [2020-11-28 03:16:04,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:04,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846582562] [2020-11-28 03:16:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:05,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846582562] [2020-11-28 03:16:05,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:05,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:05,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950859391] [2020-11-28 03:16:05,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:05,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:05,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:05,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:05,083 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-11-28 03:16:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:05,249 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-11-28 03:16:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:16:05,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:16:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:05,252 INFO L225 Difference]: With dead ends: 86 [2020-11-28 03:16:05,253 INFO L226 Difference]: Without dead ends: 84 [2020-11-28 03:16:05,253 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 [2020-11-28 03:16:05,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-28 03:16:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 58. [2020-11-28 03:16:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 03:16:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-11-28 03:16:05,274 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 14 [2020-11-28 03:16:05,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:05,275 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-11-28 03:16:05,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:05,275 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-11-28 03:16:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:16:05,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:05,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:05,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 03:16:05,279 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]=== [2020-11-28 03:16:05,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:05,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1521386336, now seen corresponding path program 1 times [2020-11-28 03:16:05,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:05,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313021138] [2020-11-28 03:16:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:05,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313021138] [2020-11-28 03:16:05,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:05,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:05,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908084551] [2020-11-28 03:16:05,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:05,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:05,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:05,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:05,495 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 6 states. [2020-11-28 03:16:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:05,633 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-11-28 03:16:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:05,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:16:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:05,634 INFO L225 Difference]: With dead ends: 70 [2020-11-28 03:16:05,634 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 03:16:05,634 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 [2020-11-28 03:16:05,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 03:16:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2020-11-28 03:16:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 03:16:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-11-28 03:16:05,641 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 14 [2020-11-28 03:16:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:05,641 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-11-28 03:16:05,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:05,641 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-11-28 03:16:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:16:05,642 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:05,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:05,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 03:16:05,643 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]=== [2020-11-28 03:16:05,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:05,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2034104204, now seen corresponding path program 1 times [2020-11-28 03:16:05,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:05,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547703305] [2020-11-28 03:16:05,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:05,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547703305] [2020-11-28 03:16:05,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:05,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:05,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618290088] [2020-11-28 03:16:05,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:05,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:05,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:05,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:05,837 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-11-28 03:16:06,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:06,009 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-11-28 03:16:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:16:06,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 03:16:06,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:06,010 INFO L225 Difference]: With dead ends: 87 [2020-11-28 03:16:06,010 INFO L226 Difference]: Without dead ends: 85 [2020-11-28 03:16:06,010 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 [2020-11-28 03:16:06,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-28 03:16:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 62. [2020-11-28 03:16:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-28 03:16:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-11-28 03:16:06,016 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 15 [2020-11-28 03:16:06,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:06,016 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-11-28 03:16:06,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-11-28 03:16:06,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:16:06,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:06,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:06,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 03:16:06,017 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]=== [2020-11-28 03:16:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:06,018 INFO L82 PathProgramCache]: Analyzing trace with hash -468803585, now seen corresponding path program 1 times [2020-11-28 03:16:06,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:06,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536672140] [2020-11-28 03:16:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:06,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536672140] [2020-11-28 03:16:06,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:06,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:06,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220071444] [2020-11-28 03:16:06,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:06,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:06,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:06,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:06,051 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 4 states. [2020-11-28 03:16:06,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:06,089 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-11-28 03:16:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:06,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-28 03:16:06,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:06,091 INFO L225 Difference]: With dead ends: 62 [2020-11-28 03:16:06,091 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 03:16:06,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:06,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 03:16:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-28 03:16:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 03:16:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-11-28 03:16:06,097 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 16 [2020-11-28 03:16:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:06,098 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-11-28 03:16:06,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-11-28 03:16:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:16:06,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:06,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:06,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 03:16:06,099 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]=== [2020-11-28 03:16:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:06,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1648003138, now seen corresponding path program 1 times [2020-11-28 03:16:06,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:06,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207245188] [2020-11-28 03:16:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:06,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207245188] [2020-11-28 03:16:06,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:06,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:06,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729388516] [2020-11-28 03:16:06,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:06,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:06,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:06,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:06,159 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2020-11-28 03:16:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:06,253 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-11-28 03:16:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:06,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 03:16:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:06,254 INFO L225 Difference]: With dead ends: 60 [2020-11-28 03:16:06,254 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:16:06,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:06,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:16:06,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-28 03:16:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:16:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-11-28 03:16:06,260 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 17 [2020-11-28 03:16:06,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:06,260 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-11-28 03:16:06,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-11-28 03:16:06,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:16:06,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:06,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:06,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 03:16:06,262 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]=== [2020-11-28 03:16:06,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:06,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1509691888, now seen corresponding path program 1 times [2020-11-28 03:16:06,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:06,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209430247] [2020-11-28 03:16:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:06,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209430247] [2020-11-28 03:16:06,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362167441] [2020-11-28 03:16:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:06,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:16:06,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:06,845 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:06,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:16:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:06,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:06,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-28 03:16:06,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165997573] [2020-11-28 03:16:06,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:16:06,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:06,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:16:06,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:16:06,876 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 13 states. [2020-11-28 03:16:07,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:07,325 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2020-11-28 03:16:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:16:07,326 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-28 03:16:07,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:07,327 INFO L225 Difference]: With dead ends: 121 [2020-11-28 03:16:07,327 INFO L226 Difference]: Without dead ends: 119 [2020-11-28 03:16:07,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:16:07,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-28 03:16:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 52. [2020-11-28 03:16:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 03:16:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-11-28 03:16:07,335 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 18 [2020-11-28 03:16:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:07,335 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-11-28 03:16:07,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:16:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-11-28 03:16:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:16:07,336 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:07,336 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:07,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:07,537 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]=== [2020-11-28 03:16:07,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:07,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1509076208, now seen corresponding path program 1 times [2020-11-28 03:16:07,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:07,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460743159] [2020-11-28 03:16:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:07,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460743159] [2020-11-28 03:16:07,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408619245] [2020-11-28 03:16:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:07,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:16:07,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:07,946 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:07,954 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:16:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:07,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:16:07,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-28 03:16:07,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689218844] [2020-11-28 03:16:07,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:16:07,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:07,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:16:07,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:16:07,991 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 13 states. [2020-11-28 03:16:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:08,451 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2020-11-28 03:16:08,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:16:08,452 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-28 03:16:08,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:08,453 INFO L225 Difference]: With dead ends: 100 [2020-11-28 03:16:08,453 INFO L226 Difference]: Without dead ends: 98 [2020-11-28 03:16:08,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:16:08,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-28 03:16:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 45. [2020-11-28 03:16:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:16:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-11-28 03:16:08,467 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 18 [2020-11-28 03:16:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:08,467 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-11-28 03:16:08,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:16:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-11-28 03:16:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:16:08,470 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:08,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:08,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:08,688 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]=== [2020-11-28 03:16:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:08,688 INFO L82 PathProgramCache]: Analyzing trace with hash 470387004, now seen corresponding path program 1 times [2020-11-28 03:16:08,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:08,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679883276] [2020-11-28 03:16:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:08,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:08,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679883276] [2020-11-28 03:16:08,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:08,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:08,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4404727] [2020-11-28 03:16:08,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:08,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:08,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:08,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:08,801 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 6 states. [2020-11-28 03:16:08,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:08,949 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-11-28 03:16:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:08,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-28 03:16:08,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:08,950 INFO L225 Difference]: With dead ends: 60 [2020-11-28 03:16:08,950 INFO L226 Difference]: Without dead ends: 58 [2020-11-28 03:16:08,950 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 [2020-11-28 03:16:08,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-28 03:16:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 40. [2020-11-28 03:16:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 03:16:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-11-28 03:16:08,954 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 18 [2020-11-28 03:16:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:08,955 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-11-28 03:16:08,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-11-28 03:16:08,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:16:08,955 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:08,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:08,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-28 03:16:08,956 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]=== [2020-11-28 03:16:08,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:08,956 INFO L82 PathProgramCache]: Analyzing trace with hash -543024337, now seen corresponding path program 1 times [2020-11-28 03:16:08,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:08,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543654461] [2020-11-28 03:16:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:09,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543654461] [2020-11-28 03:16:09,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:09,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:16:09,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538980436] [2020-11-28 03:16:09,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:09,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:09,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:09,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:09,047 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-11-28 03:16:09,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:09,156 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-11-28 03:16:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:09,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 03:16:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:09,160 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:16:09,160 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:16:09,160 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 [2020-11-28 03:16:09,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:16:09,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-11-28 03:16:09,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:16:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-11-28 03:16:09,165 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 19 [2020-11-28 03:16:09,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:09,165 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-11-28 03:16:09,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:09,166 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-11-28 03:16:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:16:09,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:09,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:09,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-28 03:16:09,167 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]=== [2020-11-28 03:16:09,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:09,167 INFO L82 PathProgramCache]: Analyzing trace with hash -478131597, now seen corresponding path program 1 times [2020-11-28 03:16:09,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:09,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654306176] [2020-11-28 03:16:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:09,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654306176] [2020-11-28 03:16:09,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:09,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:16:09,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940269794] [2020-11-28 03:16:09,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:09,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:09,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:09,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:09,238 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 7 states. [2020-11-28 03:16:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:09,323 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-11-28 03:16:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:09,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 03:16:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:09,323 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:16:09,323 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:16:09,324 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 [2020-11-28 03:16:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:16:09,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:16:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:16:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:16:09,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-28 03:16:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:09,325 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:09,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:16:09,325 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:16:09,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-28 03:16:09,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:16:09,444 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-11-28 03:16:09,722 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-11-28 03:16:10,020 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 24 [2020-11-28 03:16:10,550 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 33 [2020-11-28 03:16:10,553 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,553 INFO L274 CegarLoopResult]: For program point L234(lines 234 242) no Hoare annotation was computed. [2020-11-28 03:16:10,553 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,553 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:16:10,553 INFO L274 CegarLoopResult]: For program point L152(lines 152 160) no Hoare annotation was computed. [2020-11-28 03:16:10,553 INFO L274 CegarLoopResult]: For program point L20(lines 20 401) no Hoare annotation was computed. [2020-11-28 03:16:10,554 INFO L277 CegarLoopResult]: At program point L400(lines 15 402) the Hoare annotation is: true [2020-11-28 03:16:10,554 INFO L274 CegarLoopResult]: For program point L70(lines 70 94) no Hoare annotation was computed. [2020-11-28 03:16:10,554 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,554 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,554 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,555 INFO L274 CegarLoopResult]: For program point L4-3(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,555 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,556 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)))))) [2020-11-28 03:16:10,556 INFO L274 CegarLoopResult]: For program point L4-5(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,556 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)))))) [2020-11-28 03:16:10,556 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,556 INFO L274 CegarLoopResult]: For program point L4-7(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,556 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,556 INFO L274 CegarLoopResult]: For program point L4-9(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point L186(lines 186 196) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point L4-11(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point L4-13(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point L4-15(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point L4-17(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,557 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,558 INFO L274 CegarLoopResult]: For program point L4-19(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,558 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,558 INFO L274 CegarLoopResult]: For program point L4-21(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,558 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,559 INFO L274 CegarLoopResult]: For program point L4-23(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,559 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,559 INFO L274 CegarLoopResult]: For program point L4-25(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,559 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,560 INFO L274 CegarLoopResult]: For program point L4-27(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,560 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,560 INFO L274 CegarLoopResult]: For program point L4-29(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,560 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,560 INFO L274 CegarLoopResult]: For program point L4-31(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,560 INFO L274 CegarLoopResult]: For program point L4-32(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,561 INFO L274 CegarLoopResult]: For program point L4-33(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,561 INFO L274 CegarLoopResult]: For program point L4-34(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,561 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,561 INFO L274 CegarLoopResult]: For program point L4-35(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,561 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,561 INFO L274 CegarLoopResult]: For program point L105(lines 105 209) no Hoare annotation was computed. [2020-11-28 03:16:10,561 INFO L274 CegarLoopResult]: For program point L39(lines 39 255) no Hoare annotation was computed. [2020-11-28 03:16:10,562 INFO L274 CegarLoopResult]: For program point L288(lines 288 390) no Hoare annotation was computed. [2020-11-28 03:16:10,562 INFO L274 CegarLoopResult]: For program point L222(lines 222 244) no Hoare annotation was computed. [2020-11-28 03:16:10,562 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,562 INFO L274 CegarLoopResult]: For program point L24(lines 24 396) no Hoare annotation was computed. [2020-11-28 03:16:10,562 INFO L274 CegarLoopResult]: For program point L140(lines 140 162) no Hoare annotation was computed. [2020-11-28 03:16:10,562 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:16:10,563 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,563 INFO L274 CegarLoopResult]: For program point L124(lines 124 201) no Hoare annotation was computed. [2020-11-28 03:16:10,563 INFO L274 CegarLoopResult]: For program point L174(lines 174 198) no Hoare annotation was computed. [2020-11-28 03:16:10,563 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,563 INFO L274 CegarLoopResult]: For program point L307(lines 307 315) no Hoare annotation was computed. [2020-11-28 03:16:10,563 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,563 INFO L274 CegarLoopResult]: For program point L324(lines 324 389) no Hoare annotation was computed. [2020-11-28 03:16:10,564 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,564 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,564 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:16:10,564 INFO L274 CegarLoopResult]: For program point L276(lines 276 391) no Hoare annotation was computed. [2020-11-28 03:16:10,564 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,565 INFO L274 CegarLoopResult]: For program point L376(lines 376 385) no Hoare annotation was computed. [2020-11-28 03:16:10,565 INFO L274 CegarLoopResult]: For program point L343(lines 343 352) no Hoare annotation was computed. [2020-11-28 03:16:10,565 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,565 INFO L274 CegarLoopResult]: For program point L112(lines 112 203) no Hoare annotation was computed. [2020-11-28 03:16:10,565 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,566 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)) [2020-11-28 03:16:10,566 INFO L274 CegarLoopResult]: For program point L295(lines 295 317) no Hoare annotation was computed. [2020-11-28 03:16:10,566 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,567 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,567 INFO L274 CegarLoopResult]: For program point L32(lines 32 395) no Hoare annotation was computed. [2020-11-28 03:16:10,567 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:16:10,569 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,569 INFO L274 CegarLoopResult]: For program point L82(lines 82 92) no Hoare annotation was computed. [2020-11-28 03:16:10,569 INFO L277 CegarLoopResult]: At program point L314(lines 32 395) the Hoare annotation is: true [2020-11-28 03:16:10,569 INFO L274 CegarLoopResult]: For program point L215(lines 215 250) no Hoare annotation was computed. [2020-11-28 03:16:10,570 INFO L274 CegarLoopResult]: For program point L50(lines 50 253) no Hoare annotation was computed. [2020-11-28 03:16:10,570 INFO L274 CegarLoopResult]: For program point L364(lines 364 387) no Hoare annotation was computed. [2020-11-28 03:16:10,570 INFO L274 CegarLoopResult]: For program point L331(lines 331 354) no Hoare annotation was computed. [2020-11-28 03:16:10,570 INFO L274 CegarLoopResult]: For program point L265(lines 265 393) no Hoare annotation was computed. [2020-11-28 03:16:10,570 INFO L274 CegarLoopResult]: For program point L133(lines 133 200) no Hoare annotation was computed. [2020-11-28 03:16:10,570 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:16:10,570 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)) [2020-11-28 03:16:10,571 INFO L274 CegarLoopResult]: For program point L101(lines 101 251) no Hoare annotation was computed. [2020-11-28 03:16:10,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:16:10 BoogieIcfgContainer [2020-11-28 03:16:10,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:16:10,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:10,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:10,615 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:10,615 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:01" (3/4) ... [2020-11-28 03:16:10,619 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:16:10,644 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:16:10,644 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:16:10,645 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:16:10,646 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:16:10,757 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d175de9b-0db3-4407-8e97-ea415e0c9d11/bin/uautomizer/witness.graphml [2020-11-28 03:16:10,757 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:10,759 INFO L168 Benchmark]: Toolchain (without parser) took 11026.73 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 62.4 MB in the beginning and 58.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 73.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:10,759 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 92.3 MB. Free memory was 49.7 MB in the beginning and 49.7 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:10,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.58 ms. Allocated memory is still 92.3 MB. Free memory was 62.2 MB in the beginning and 68.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:10,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.56 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 66.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:10,761 INFO L168 Benchmark]: Boogie Preprocessor took 58.18 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 64.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:10,762 INFO L168 Benchmark]: RCFGBuilder took 794.15 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 37.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:10,762 INFO L168 Benchmark]: TraceAbstraction took 9467.34 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 37.2 MB in the beginning and 65.7 MB in the end (delta: -28.6 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:10,763 INFO L168 Benchmark]: Witness Printer took 142.67 ms. Allocated memory is still 161.5 MB. Free memory was 64.7 MB in the beginning and 58.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:10,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 92.3 MB. Free memory was 49.7 MB in the beginning and 49.7 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 468.58 ms. Allocated memory is still 92.3 MB. Free memory was 62.2 MB in the beginning and 68.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.56 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 66.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.18 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 64.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 794.15 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 37.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9467.34 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 37.2 MB in the beginning and 65.7 MB in the end (delta: -28.6 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. * Witness Printer took 142.67 ms. Allocated memory is still 161.5 MB. Free memory was 64.7 MB in the beginning and 58.4 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: 8.0s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 3.9s, 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: 0.1s 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, 0.3s SatisfiabilityAnalysisTime, 2.5s 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...