./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_8.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_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_8.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/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 37d0ed05d77a0379c9ed98058bf2f327252773ce ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:23:15,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:23:15,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:23:15,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:23:15,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:23:15,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:23:15,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:23:15,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:23:15,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:23:15,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:23:15,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:23:15,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:23:15,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:23:15,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:23:15,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:23:15,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:23:15,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:23:15,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:23:15,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:23:15,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:23:15,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:23:15,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:23:15,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:23:15,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:23:15,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:23:15,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:23:15,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:23:15,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:23:15,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:23:15,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:23:15,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:23:15,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:23:15,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:23:15,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:23:15,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:23:15,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:23:15,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:23:15,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:23:15,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:23:15,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:23:15,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:23:15,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:23:15,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:23:15,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:23:15,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:23:15,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:23:15,377 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:23:15,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:23:15,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:23:15,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:23:15,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:23:15,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:23:15,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:23:15,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:23:15,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:23:15,379 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:23:15,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:23:15,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:23:15,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:23:15,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:23:15,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:23:15,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:23:15,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:23:15,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:23:15,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:23:15,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:23:15,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:23:15,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:23:15,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:23:15,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:23:15,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:23:15,382 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_8753aa71-1e71-4028-90ae-bddfd116d18d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37d0ed05d77a0379c9ed98058bf2f327252773ce [2020-11-30 00:23:15,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:23:15,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:23:15,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:23:15,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:23:15,723 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:23:15,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_8.c [2020-11-30 00:23:15,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/data/d81e2ecbe/d20f09f2c8e14984839232b09e8962d8/FLAG25aebfab6 [2020-11-30 00:23:16,273 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:23:16,273 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/sv-benchmarks/c/locks/test_locks_8.c [2020-11-30 00:23:16,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/data/d81e2ecbe/d20f09f2c8e14984839232b09e8962d8/FLAG25aebfab6 [2020-11-30 00:23:16,629 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/data/d81e2ecbe/d20f09f2c8e14984839232b09e8962d8 [2020-11-30 00:23:16,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:23:16,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:23:16,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:23:16,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:23:16,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:23:16,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307a7626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16, skipping insertion in model container [2020-11-30 00:23:16,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:23:16,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:23:16,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:23:16,868 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:23:16,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:23:16,911 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:23:16,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16 WrapperNode [2020-11-30 00:23:16,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:23:16,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:23:16,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:23:16,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:23:16,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:23:16,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:23:16,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:23:16,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:23:16,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (1/1) ... [2020-11-30 00:23:16,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:23:16,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:23:16,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:23:16,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:23:16,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:23:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:23:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:23:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:23:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:23:17,465 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:23:17,466 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-30 00:23:17,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:23:17 BoogieIcfgContainer [2020-11-30 00:23:17,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:23:17,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:23:17,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:23:17,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:23:17,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:23:16" (1/3) ... [2020-11-30 00:23:17,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d86615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:23:17, skipping insertion in model container [2020-11-30 00:23:17,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:23:16" (2/3) ... [2020-11-30 00:23:17,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d86615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:23:17, skipping insertion in model container [2020-11-30 00:23:17,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:23:17" (3/3) ... [2020-11-30 00:23:17,476 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2020-11-30 00:23:17,489 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:23:17,493 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:23:17,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:23:17,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:23:17,527 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:23:17,527 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:23:17,528 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:23:17,528 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:23:17,528 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:23:17,528 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:23:17,528 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:23:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-30 00:23:17,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:23:17,547 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:17,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:17,548 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:17,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:17,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1577492323, now seen corresponding path program 1 times [2020-11-30 00:23:17,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:17,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803380242] [2020-11-30 00:23:17,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:17,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803380242] [2020-11-30 00:23:17,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:17,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:17,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465480775] [2020-11-30 00:23:17,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:17,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:17,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:17,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:17,755 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-11-30 00:23:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:17,796 INFO L93 Difference]: Finished difference Result 72 states and 122 transitions. [2020-11-30 00:23:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:17,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-30 00:23:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:17,807 INFO L225 Difference]: With dead ends: 72 [2020-11-30 00:23:17,807 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 00:23:17,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:17,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 00:23:17,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-11-30 00:23:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:23:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 70 transitions. [2020-11-30 00:23:17,845 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 70 transitions. Word has length 15 [2020-11-30 00:23:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:17,846 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 70 transitions. [2020-11-30 00:23:17,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:17,846 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 70 transitions. [2020-11-30 00:23:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:23:17,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:17,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:17,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:23:17,848 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:17,848 INFO L82 PathProgramCache]: Analyzing trace with hash -876427745, now seen corresponding path program 1 times [2020-11-30 00:23:17,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:17,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087925186] [2020-11-30 00:23:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:17,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087925186] [2020-11-30 00:23:17,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:17,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:17,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727369541] [2020-11-30 00:23:17,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:17,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:17,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:17,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:17,946 INFO L87 Difference]: Start difference. First operand 39 states and 70 transitions. Second operand 3 states. [2020-11-30 00:23:17,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:17,987 INFO L93 Difference]: Finished difference Result 94 states and 169 transitions. [2020-11-30 00:23:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:17,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-30 00:23:17,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:17,989 INFO L225 Difference]: With dead ends: 94 [2020-11-30 00:23:17,989 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 00:23:17,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 00:23:17,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-11-30 00:23:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 00:23:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-11-30 00:23:17,998 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 15 [2020-11-30 00:23:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:17,999 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-11-30 00:23:17,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-11-30 00:23:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:23:18,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:18,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:18,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:23:18,001 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1657407761, now seen corresponding path program 1 times [2020-11-30 00:23:18,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41147843] [2020-11-30 00:23:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:18,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41147843] [2020-11-30 00:23:18,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:18,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:18,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409323866] [2020-11-30 00:23:18,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:18,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:18,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:18,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,060 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 3 states. [2020-11-30 00:23:18,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:18,077 INFO L93 Difference]: Finished difference Result 87 states and 150 transitions. [2020-11-30 00:23:18,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:18,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 00:23:18,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:18,079 INFO L225 Difference]: With dead ends: 87 [2020-11-30 00:23:18,079 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 00:23:18,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 00:23:18,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-11-30 00:23:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 00:23:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 100 transitions. [2020-11-30 00:23:18,089 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 100 transitions. Word has length 16 [2020-11-30 00:23:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:18,089 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 100 transitions. [2020-11-30 00:23:18,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:18,089 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 100 transitions. [2020-11-30 00:23:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:23:18,090 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:18,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:18,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:23:18,091 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:18,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1399242323, now seen corresponding path program 1 times [2020-11-30 00:23:18,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233483386] [2020-11-30 00:23:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:18,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233483386] [2020-11-30 00:23:18,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:18,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:18,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71471420] [2020-11-30 00:23:18,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:18,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:18,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:18,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,141 INFO L87 Difference]: Start difference. First operand 58 states and 100 transitions. Second operand 3 states. [2020-11-30 00:23:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:18,178 INFO L93 Difference]: Finished difference Result 109 states and 189 transitions. [2020-11-30 00:23:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:18,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 00:23:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:18,180 INFO L225 Difference]: With dead ends: 109 [2020-11-30 00:23:18,180 INFO L226 Difference]: Without dead ends: 107 [2020-11-30 00:23:18,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-30 00:23:18,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2020-11-30 00:23:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-30 00:23:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2020-11-30 00:23:18,193 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2020-11-30 00:23:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:18,193 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2020-11-30 00:23:18,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2020-11-30 00:23:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:23:18,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:18,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:18,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:23:18,195 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash -698177745, now seen corresponding path program 1 times [2020-11-30 00:23:18,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843079218] [2020-11-30 00:23:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:18,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843079218] [2020-11-30 00:23:18,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:18,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:18,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936159408] [2020-11-30 00:23:18,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:18,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:18,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:18,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,269 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 3 states. [2020-11-30 00:23:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:18,302 INFO L93 Difference]: Finished difference Result 181 states and 315 transitions. [2020-11-30 00:23:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:18,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 00:23:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:18,304 INFO L225 Difference]: With dead ends: 181 [2020-11-30 00:23:18,305 INFO L226 Difference]: Without dead ends: 109 [2020-11-30 00:23:18,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-30 00:23:18,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-11-30 00:23:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-30 00:23:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 183 transitions. [2020-11-30 00:23:18,318 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 183 transitions. Word has length 16 [2020-11-30 00:23:18,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:18,318 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 183 transitions. [2020-11-30 00:23:18,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:18,319 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 183 transitions. [2020-11-30 00:23:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:23:18,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:18,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:18,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:23:18,320 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:18,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,321 INFO L82 PathProgramCache]: Analyzing trace with hash -426624716, now seen corresponding path program 1 times [2020-11-30 00:23:18,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479322314] [2020-11-30 00:23:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:18,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479322314] [2020-11-30 00:23:18,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:18,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:18,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865266775] [2020-11-30 00:23:18,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:18,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:18,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:18,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,368 INFO L87 Difference]: Start difference. First operand 107 states and 183 transitions. Second operand 3 states. [2020-11-30 00:23:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:18,388 INFO L93 Difference]: Finished difference Result 162 states and 274 transitions. [2020-11-30 00:23:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:18,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:23:18,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:18,390 INFO L225 Difference]: With dead ends: 162 [2020-11-30 00:23:18,390 INFO L226 Difference]: Without dead ends: 111 [2020-11-30 00:23:18,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-30 00:23:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-11-30 00:23:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-30 00:23:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 183 transitions. [2020-11-30 00:23:18,403 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 183 transitions. Word has length 17 [2020-11-30 00:23:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:18,403 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 183 transitions. [2020-11-30 00:23:18,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 183 transitions. [2020-11-30 00:23:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:23:18,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:18,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:18,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:23:18,405 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:18,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,406 INFO L82 PathProgramCache]: Analyzing trace with hash -168459278, now seen corresponding path program 1 times [2020-11-30 00:23:18,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212403807] [2020-11-30 00:23:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:18,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212403807] [2020-11-30 00:23:18,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:18,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:18,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674841340] [2020-11-30 00:23:18,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:18,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:18,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:18,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,443 INFO L87 Difference]: Start difference. First operand 109 states and 183 transitions. Second operand 3 states. [2020-11-30 00:23:18,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:18,474 INFO L93 Difference]: Finished difference Result 309 states and 521 transitions. [2020-11-30 00:23:18,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:18,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:23:18,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:18,476 INFO L225 Difference]: With dead ends: 309 [2020-11-30 00:23:18,476 INFO L226 Difference]: Without dead ends: 207 [2020-11-30 00:23:18,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-11-30 00:23:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-11-30 00:23:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-11-30 00:23:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 339 transitions. [2020-11-30 00:23:18,501 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 339 transitions. Word has length 17 [2020-11-30 00:23:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:18,502 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 339 transitions. [2020-11-30 00:23:18,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 339 transitions. [2020-11-30 00:23:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:23:18,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:18,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:18,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:23:18,504 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,505 INFO L82 PathProgramCache]: Analyzing trace with hash -869523856, now seen corresponding path program 1 times [2020-11-30 00:23:18,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024416059] [2020-11-30 00:23:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:18,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024416059] [2020-11-30 00:23:18,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:18,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:18,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179366485] [2020-11-30 00:23:18,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:18,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:18,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:18,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,536 INFO L87 Difference]: Start difference. First operand 205 states and 339 transitions. Second operand 3 states. [2020-11-30 00:23:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:18,607 INFO L93 Difference]: Finished difference Result 257 states and 429 transitions. [2020-11-30 00:23:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:18,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:23:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:18,610 INFO L225 Difference]: With dead ends: 257 [2020-11-30 00:23:18,611 INFO L226 Difference]: Without dead ends: 255 [2020-11-30 00:23:18,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-30 00:23:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2020-11-30 00:23:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-11-30 00:23:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 335 transitions. [2020-11-30 00:23:18,627 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 335 transitions. Word has length 17 [2020-11-30 00:23:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:18,627 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 335 transitions. [2020-11-30 00:23:18,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 335 transitions. [2020-11-30 00:23:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:23:18,629 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:18,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:18,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:23:18,630 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:18,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,630 INFO L82 PathProgramCache]: Analyzing trace with hash -927055644, now seen corresponding path program 1 times [2020-11-30 00:23:18,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64811862] [2020-11-30 00:23:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:18,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64811862] [2020-11-30 00:23:18,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:18,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:18,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266687087] [2020-11-30 00:23:18,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:18,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:18,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:18,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,661 INFO L87 Difference]: Start difference. First operand 205 states and 335 transitions. Second operand 3 states. [2020-11-30 00:23:18,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:18,708 INFO L93 Difference]: Finished difference Result 373 states and 617 transitions. [2020-11-30 00:23:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:18,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-30 00:23:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:18,732 INFO L225 Difference]: With dead ends: 373 [2020-11-30 00:23:18,732 INFO L226 Difference]: Without dead ends: 371 [2020-11-30 00:23:18,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-11-30 00:23:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 289. [2020-11-30 00:23:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-11-30 00:23:18,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 463 transitions. [2020-11-30 00:23:18,746 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 463 transitions. Word has length 18 [2020-11-30 00:23:18,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:18,746 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 463 transitions. [2020-11-30 00:23:18,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:18,746 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 463 transitions. [2020-11-30 00:23:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:23:18,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:18,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:18,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:23:18,749 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:18,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,750 INFO L82 PathProgramCache]: Analyzing trace with hash -225991066, now seen corresponding path program 1 times [2020-11-30 00:23:18,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898096098] [2020-11-30 00:23:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:18,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898096098] [2020-11-30 00:23:18,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:18,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:18,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321699049] [2020-11-30 00:23:18,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:18,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:18,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:18,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,796 INFO L87 Difference]: Start difference. First operand 289 states and 463 transitions. Second operand 3 states. [2020-11-30 00:23:18,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:18,822 INFO L93 Difference]: Finished difference Result 677 states and 1089 transitions. [2020-11-30 00:23:18,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:18,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-30 00:23:18,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:18,825 INFO L225 Difference]: With dead ends: 677 [2020-11-30 00:23:18,825 INFO L226 Difference]: Without dead ends: 395 [2020-11-30 00:23:18,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-11-30 00:23:18,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2020-11-30 00:23:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-11-30 00:23:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 619 transitions. [2020-11-30 00:23:18,848 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 619 transitions. Word has length 18 [2020-11-30 00:23:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:18,848 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 619 transitions. [2020-11-30 00:23:18,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 619 transitions. [2020-11-30 00:23:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:23:18,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:18,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:18,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:23:18,850 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:18,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1326261127, now seen corresponding path program 1 times [2020-11-30 00:23:18,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020721662] [2020-11-30 00:23:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:18,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020721662] [2020-11-30 00:23:18,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:18,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:18,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819996845] [2020-11-30 00:23:18,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:18,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:18,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:18,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,894 INFO L87 Difference]: Start difference. First operand 393 states and 619 transitions. Second operand 3 states. [2020-11-30 00:23:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:18,936 INFO L93 Difference]: Finished difference Result 597 states and 937 transitions. [2020-11-30 00:23:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:18,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-30 00:23:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:18,940 INFO L225 Difference]: With dead ends: 597 [2020-11-30 00:23:18,940 INFO L226 Difference]: Without dead ends: 407 [2020-11-30 00:23:18,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-11-30 00:23:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2020-11-30 00:23:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-11-30 00:23:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 627 transitions. [2020-11-30 00:23:18,973 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 627 transitions. Word has length 19 [2020-11-30 00:23:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:18,975 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 627 transitions. [2020-11-30 00:23:18,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 627 transitions. [2020-11-30 00:23:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:23:18,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:18,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:18,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 00:23:18,976 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:18,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:18,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1584426565, now seen corresponding path program 1 times [2020-11-30 00:23:18,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:18,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814759092] [2020-11-30 00:23:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:19,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814759092] [2020-11-30 00:23:19,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:19,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:19,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529659084] [2020-11-30 00:23:19,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:19,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:19,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:19,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,016 INFO L87 Difference]: Start difference. First operand 405 states and 627 transitions. Second operand 3 states. [2020-11-30 00:23:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:19,058 INFO L93 Difference]: Finished difference Result 713 states and 1117 transitions. [2020-11-30 00:23:19,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:19,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-30 00:23:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:19,064 INFO L225 Difference]: With dead ends: 713 [2020-11-30 00:23:19,064 INFO L226 Difference]: Without dead ends: 711 [2020-11-30 00:23:19,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-11-30 00:23:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 581. [2020-11-30 00:23:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-11-30 00:23:19,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 875 transitions. [2020-11-30 00:23:19,090 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 875 transitions. Word has length 19 [2020-11-30 00:23:19,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:19,091 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 875 transitions. [2020-11-30 00:23:19,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:19,091 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 875 transitions. [2020-11-30 00:23:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:23:19,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:19,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:19,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 00:23:19,092 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:19,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2009476153, now seen corresponding path program 1 times [2020-11-30 00:23:19,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:19,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442493089] [2020-11-30 00:23:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:19,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442493089] [2020-11-30 00:23:19,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:19,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:19,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150411098] [2020-11-30 00:23:19,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:19,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:19,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:19,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,152 INFO L87 Difference]: Start difference. First operand 581 states and 875 transitions. Second operand 3 states. [2020-11-30 00:23:19,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:19,190 INFO L93 Difference]: Finished difference Result 1337 states and 2013 transitions. [2020-11-30 00:23:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:19,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-30 00:23:19,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:19,195 INFO L225 Difference]: With dead ends: 1337 [2020-11-30 00:23:19,196 INFO L226 Difference]: Without dead ends: 775 [2020-11-30 00:23:19,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-11-30 00:23:19,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2020-11-30 00:23:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-11-30 00:23:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1139 transitions. [2020-11-30 00:23:19,233 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1139 transitions. Word has length 19 [2020-11-30 00:23:19,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:19,233 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1139 transitions. [2020-11-30 00:23:19,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1139 transitions. [2020-11-30 00:23:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:23:19,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:19,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:19,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 00:23:19,241 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:19,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:19,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1872798619, now seen corresponding path program 1 times [2020-11-30 00:23:19,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:19,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69330013] [2020-11-30 00:23:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:19,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69330013] [2020-11-30 00:23:19,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:19,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:19,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348853328] [2020-11-30 00:23:19,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:19,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:19,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:19,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,290 INFO L87 Difference]: Start difference. First operand 773 states and 1139 transitions. Second operand 3 states. [2020-11-30 00:23:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:19,325 INFO L93 Difference]: Finished difference Result 1161 states and 1701 transitions. [2020-11-30 00:23:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:19,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-30 00:23:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:19,331 INFO L225 Difference]: With dead ends: 1161 [2020-11-30 00:23:19,331 INFO L226 Difference]: Without dead ends: 791 [2020-11-30 00:23:19,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-11-30 00:23:19,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 789. [2020-11-30 00:23:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-11-30 00:23:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1139 transitions. [2020-11-30 00:23:19,358 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1139 transitions. Word has length 20 [2020-11-30 00:23:19,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:19,359 INFO L481 AbstractCegarLoop]: Abstraction has 789 states and 1139 transitions. [2020-11-30 00:23:19,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1139 transitions. [2020-11-30 00:23:19,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:23:19,362 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:19,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:19,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 00:23:19,363 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:19,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:19,363 INFO L82 PathProgramCache]: Analyzing trace with hash 2130964057, now seen corresponding path program 1 times [2020-11-30 00:23:19,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:19,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40786796] [2020-11-30 00:23:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:19,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40786796] [2020-11-30 00:23:19,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:19,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:19,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798642870] [2020-11-30 00:23:19,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:19,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:19,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:19,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,407 INFO L87 Difference]: Start difference. First operand 789 states and 1139 transitions. Second operand 3 states. [2020-11-30 00:23:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:19,437 INFO L93 Difference]: Finished difference Result 1353 states and 1973 transitions. [2020-11-30 00:23:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:19,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-30 00:23:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:19,445 INFO L225 Difference]: With dead ends: 1353 [2020-11-30 00:23:19,445 INFO L226 Difference]: Without dead ends: 1351 [2020-11-30 00:23:19,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-11-30 00:23:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1157. [2020-11-30 00:23:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-11-30 00:23:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1619 transitions. [2020-11-30 00:23:19,491 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1619 transitions. Word has length 20 [2020-11-30 00:23:19,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:19,492 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1619 transitions. [2020-11-30 00:23:19,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1619 transitions. [2020-11-30 00:23:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:23:19,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:19,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:19,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 00:23:19,494 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:19,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1462938661, now seen corresponding path program 1 times [2020-11-30 00:23:19,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:19,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695028916] [2020-11-30 00:23:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:19,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695028916] [2020-11-30 00:23:19,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:19,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:19,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497331486] [2020-11-30 00:23:19,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:19,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:19,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:19,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,530 INFO L87 Difference]: Start difference. First operand 1157 states and 1619 transitions. Second operand 3 states. [2020-11-30 00:23:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:19,574 INFO L93 Difference]: Finished difference Result 2633 states and 3669 transitions. [2020-11-30 00:23:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:19,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-30 00:23:19,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:19,584 INFO L225 Difference]: With dead ends: 2633 [2020-11-30 00:23:19,584 INFO L226 Difference]: Without dead ends: 1511 [2020-11-30 00:23:19,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2020-11-30 00:23:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2020-11-30 00:23:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-11-30 00:23:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2051 transitions. [2020-11-30 00:23:19,637 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2051 transitions. Word has length 20 [2020-11-30 00:23:19,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:19,639 INFO L481 AbstractCegarLoop]: Abstraction has 1509 states and 2051 transitions. [2020-11-30 00:23:19,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:19,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2051 transitions. [2020-11-30 00:23:19,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:23:19,642 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:19,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:19,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-30 00:23:19,642 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:19,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1635592028, now seen corresponding path program 1 times [2020-11-30 00:23:19,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:19,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3572055] [2020-11-30 00:23:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:19,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3572055] [2020-11-30 00:23:19,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:19,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:19,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098443308] [2020-11-30 00:23:19,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:19,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:19,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:19,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,667 INFO L87 Difference]: Start difference. First operand 1509 states and 2051 transitions. Second operand 3 states. [2020-11-30 00:23:19,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:19,713 INFO L93 Difference]: Finished difference Result 2265 states and 3061 transitions. [2020-11-30 00:23:19,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:19,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-30 00:23:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:19,722 INFO L225 Difference]: With dead ends: 2265 [2020-11-30 00:23:19,723 INFO L226 Difference]: Without dead ends: 1543 [2020-11-30 00:23:19,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-11-30 00:23:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2020-11-30 00:23:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-11-30 00:23:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2051 transitions. [2020-11-30 00:23:19,775 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2051 transitions. Word has length 21 [2020-11-30 00:23:19,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:19,777 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2051 transitions. [2020-11-30 00:23:19,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:19,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2051 transitions. [2020-11-30 00:23:19,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:23:19,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:19,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:19,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-30 00:23:19,779 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:19,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:19,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1893757466, now seen corresponding path program 1 times [2020-11-30 00:23:19,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:19,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079237818] [2020-11-30 00:23:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:19,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079237818] [2020-11-30 00:23:19,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:19,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:19,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480108683] [2020-11-30 00:23:19,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:19,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:19,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:19,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,807 INFO L87 Difference]: Start difference. First operand 1541 states and 2051 transitions. Second operand 3 states. [2020-11-30 00:23:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:19,868 INFO L93 Difference]: Finished difference Result 2569 states and 3429 transitions. [2020-11-30 00:23:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:19,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-30 00:23:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:19,882 INFO L225 Difference]: With dead ends: 2569 [2020-11-30 00:23:19,882 INFO L226 Difference]: Without dead ends: 2567 [2020-11-30 00:23:19,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2020-11-30 00:23:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2309. [2020-11-30 00:23:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-11-30 00:23:19,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2979 transitions. [2020-11-30 00:23:19,957 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2979 transitions. Word has length 21 [2020-11-30 00:23:19,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:19,957 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 2979 transitions. [2020-11-30 00:23:19,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2979 transitions. [2020-11-30 00:23:19,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:23:19,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:19,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:19,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 00:23:19,961 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:19,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:19,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1700145252, now seen corresponding path program 1 times [2020-11-30 00:23:19,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:19,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221646674] [2020-11-30 00:23:19,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:19,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221646674] [2020-11-30 00:23:19,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:19,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:19,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181995947] [2020-11-30 00:23:19,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:19,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:19,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:19,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:19,992 INFO L87 Difference]: Start difference. First operand 2309 states and 2979 transitions. Second operand 3 states. [2020-11-30 00:23:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:20,115 INFO L93 Difference]: Finished difference Result 5193 states and 6629 transitions. [2020-11-30 00:23:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:20,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-30 00:23:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:20,130 INFO L225 Difference]: With dead ends: 5193 [2020-11-30 00:23:20,131 INFO L226 Difference]: Without dead ends: 2951 [2020-11-30 00:23:20,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:20,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-11-30 00:23:20,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2949. [2020-11-30 00:23:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2949 states. [2020-11-30 00:23:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3651 transitions. [2020-11-30 00:23:20,231 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3651 transitions. Word has length 21 [2020-11-30 00:23:20,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:20,231 INFO L481 AbstractCegarLoop]: Abstraction has 2949 states and 3651 transitions. [2020-11-30 00:23:20,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:20,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3651 transitions. [2020-11-30 00:23:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:23:20,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:20,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:20,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-30 00:23:20,235 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:20,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1422844656, now seen corresponding path program 1 times [2020-11-30 00:23:20,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:20,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955869182] [2020-11-30 00:23:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:20,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955869182] [2020-11-30 00:23:20,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:20,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:20,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716535252] [2020-11-30 00:23:20,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:20,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:20,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:20,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:20,267 INFO L87 Difference]: Start difference. First operand 2949 states and 3651 transitions. Second operand 3 states. [2020-11-30 00:23:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:20,331 INFO L93 Difference]: Finished difference Result 4425 states and 5445 transitions. [2020-11-30 00:23:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:20,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-30 00:23:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:20,346 INFO L225 Difference]: With dead ends: 4425 [2020-11-30 00:23:20,347 INFO L226 Difference]: Without dead ends: 3015 [2020-11-30 00:23:20,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-11-30 00:23:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3013. [2020-11-30 00:23:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3013 states. [2020-11-30 00:23:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3651 transitions. [2020-11-30 00:23:20,472 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3651 transitions. Word has length 22 [2020-11-30 00:23:20,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:20,473 INFO L481 AbstractCegarLoop]: Abstraction has 3013 states and 3651 transitions. [2020-11-30 00:23:20,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3651 transitions. [2020-11-30 00:23:20,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:23:20,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:20,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:20,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-30 00:23:20,477 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:20,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:20,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1164679218, now seen corresponding path program 1 times [2020-11-30 00:23:20,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:20,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841680468] [2020-11-30 00:23:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:20,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841680468] [2020-11-30 00:23:20,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:20,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:20,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074855558] [2020-11-30 00:23:20,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:20,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:20,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:20,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:20,502 INFO L87 Difference]: Start difference. First operand 3013 states and 3651 transitions. Second operand 3 states. [2020-11-30 00:23:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:20,591 INFO L93 Difference]: Finished difference Result 4871 states and 5828 transitions. [2020-11-30 00:23:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:20,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-30 00:23:20,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:20,615 INFO L225 Difference]: With dead ends: 4871 [2020-11-30 00:23:20,615 INFO L226 Difference]: Without dead ends: 4869 [2020-11-30 00:23:20,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-11-30 00:23:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4613. [2020-11-30 00:23:20,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4613 states. [2020-11-30 00:23:20,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 5443 transitions. [2020-11-30 00:23:20,801 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 5443 transitions. Word has length 22 [2020-11-30 00:23:20,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:20,801 INFO L481 AbstractCegarLoop]: Abstraction has 4613 states and 5443 transitions. [2020-11-30 00:23:20,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:20,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 5443 transitions. [2020-11-30 00:23:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:23:20,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:23:20,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:23:20,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-30 00:23:20,810 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:23:20,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:23:20,811 INFO L82 PathProgramCache]: Analyzing trace with hash -463614640, now seen corresponding path program 1 times [2020-11-30 00:23:20,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:23:20,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756568568] [2020-11-30 00:23:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:23:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:23:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:23:20,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756568568] [2020-11-30 00:23:20,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:23:20,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:23:20,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640833002] [2020-11-30 00:23:20,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:23:20,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:23:20,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:23:20,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:20,848 INFO L87 Difference]: Start difference. First operand 4613 states and 5443 transitions. Second operand 3 states. [2020-11-30 00:23:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:23:20,976 INFO L93 Difference]: Finished difference Result 10245 states and 11843 transitions. [2020-11-30 00:23:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:23:20,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-30 00:23:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:23:20,977 INFO L225 Difference]: With dead ends: 10245 [2020-11-30 00:23:20,977 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:23:20,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:23:20,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:23:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:23:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:23:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:23:20,988 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-30 00:23:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:23:20,988 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:23:20,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:23:20,988 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:23:20,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:23:20,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-30 00:23:20,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:23:21,008 INFO L274 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-11-30 00:23:21,008 INFO L274 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-11-30 00:23:21,008 INFO L274 CegarLoopResult]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,008 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 00:23:21,008 INFO L277 CegarLoopResult]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2020-11-30 00:23:21,008 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:23:21,008 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:23:21,008 INFO L274 CegarLoopResult]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,008 INFO L274 CegarLoopResult]: For program point L78-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,008 INFO L277 CegarLoopResult]: At program point L136(lines 6 137) the Hoare annotation is: true [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L37(lines 37 39) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L70-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L270 CegarLoopResult]: At program point L128-1(lines 7 137) the Hoare annotation is: false [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L62-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:23:21,009 INFO L274 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point L82-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point L74-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point L66-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point L58(lines 58 60) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point L58-2(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L277 CegarLoopResult]: At program point L133(lines 7 137) the Hoare annotation is: true [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,010 INFO L274 CegarLoopResult]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2020-11-30 00:23:21,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:23:21 BoogieIcfgContainer [2020-11-30 00:23:21,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:23:21,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:23:21,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:23:21,022 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:23:21,023 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:23:17" (3/4) ... [2020-11-30 00:23:21,025 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:23:21,039 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 00:23:21,040 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:23:21,040 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:23:21,040 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:23:21,098 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8753aa71-1e71-4028-90ae-bddfd116d18d/bin/uautomizer/witness.graphml [2020-11-30 00:23:21,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:23:21,100 INFO L168 Benchmark]: Toolchain (without parser) took 4466.58 ms. Allocated memory was 109.1 MB in the beginning and 163.6 MB in the end (delta: 54.5 MB). Free memory was 76.2 MB in the beginning and 67.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:21,101 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 73.4 MB. Free memory was 31.9 MB in the beginning and 31.9 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:23:21,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.60 ms. Allocated memory is still 109.1 MB. Free memory was 76.1 MB in the beginning and 84.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:21,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.36 ms. Allocated memory is still 109.1 MB. Free memory was 84.8 MB in the beginning and 83.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:21,102 INFO L168 Benchmark]: Boogie Preprocessor took 23.13 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 82.3 MB in the end (delta: 980.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:23:21,103 INFO L168 Benchmark]: RCFGBuilder took 496.65 ms. Allocated memory is still 109.1 MB. Free memory was 82.3 MB in the beginning and 64.4 MB in the end (delta: 17.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:21,103 INFO L168 Benchmark]: TraceAbstraction took 3552.67 ms. Allocated memory was 109.1 MB in the beginning and 163.6 MB in the end (delta: 54.5 MB). Free memory was 64.4 MB in the beginning and 71.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:21,103 INFO L168 Benchmark]: Witness Printer took 76.69 ms. Allocated memory is still 163.6 MB. Free memory was 71.9 MB in the beginning and 67.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:23:21,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 73.4 MB. Free memory was 31.9 MB in the beginning and 31.9 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.60 ms. Allocated memory is still 109.1 MB. Free memory was 76.1 MB in the beginning and 84.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.36 ms. Allocated memory is still 109.1 MB. Free memory was 84.8 MB in the beginning and 83.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.13 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 82.3 MB in the end (delta: 980.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 496.65 ms. Allocated memory is still 109.1 MB. Free memory was 82.3 MB in the beginning and 64.4 MB in the end (delta: 17.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3552.67 ms. Allocated memory was 109.1 MB in the beginning and 163.6 MB in the end (delta: 54.5 MB). Free memory was 64.4 MB in the beginning and 71.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. * Witness Printer took 76.69 ms. Allocated memory is still 163.6 MB. Free memory was 71.9 MB in the beginning and 67.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1474 SDtfs, 720 SDslu, 964 SDs, 0 SdLazy, 117 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4613occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 22 MinimizatonAttempts, 1044 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 265 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 14367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 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...