./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/locks/test_locks_5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 d28fd50bd3f7e49bee026aec860ad9015a4fdfba .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 19:39:11,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:39:11,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:39:11,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:39:11,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:39:11,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:39:11,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:39:11,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:39:11,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:39:11,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:39:11,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:39:11,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:39:11,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:39:11,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:39:11,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:39:11,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:39:11,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:39:11,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:39:11,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:39:11,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:39:11,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:39:11,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:39:11,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:39:11,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:39:11,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:39:11,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:39:11,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:39:11,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:39:11,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:39:11,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:39:11,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:39:11,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:39:11,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:39:11,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:39:11,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:39:11,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:39:11,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:39:11,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:39:11,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:39:11,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:39:11,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:39:11,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:39:11,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:39:11,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:39:11,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:39:11,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:39:11,649 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:39:11,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:39:11,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:39:11,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:39:11,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:39:11,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:39:11,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:39:11,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:39:11,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:39:11,652 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:39:11,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:39:11,653 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:39:11,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:39:11,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:39:11,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:39:11,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:39:11,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:39:11,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:39:11,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:39:11,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:39:11,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:39:11,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:39:11,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:39:11,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:39:11,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:39:11,657 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28fd50bd3f7e49bee026aec860ad9015a4fdfba [2020-10-25 19:39:12,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:39:12,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:39:12,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:39:12,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:39:12,145 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:39:12,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2020-10-25 19:39:12,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3116538c0/0fa8212445424cc78db982f9aa97ae48/FLAGe158083ad [2020-10-25 19:39:12,924 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:39:12,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2020-10-25 19:39:12,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3116538c0/0fa8212445424cc78db982f9aa97ae48/FLAGe158083ad [2020-10-25 19:39:13,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3116538c0/0fa8212445424cc78db982f9aa97ae48 [2020-10-25 19:39:13,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:39:13,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:39:13,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:39:13,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:39:13,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:39:13,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3077f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13, skipping insertion in model container [2020-10-25 19:39:13,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:39:13,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:39:13,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:39:13,457 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:39:13,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:39:13,498 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:39:13,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13 WrapperNode [2020-10-25 19:39:13,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:39:13,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:39:13,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:39:13,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:39:13,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:39:13,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:39:13,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:39:13,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:39:13,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (1/1) ... [2020-10-25 19:39:13,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:39:13,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:39:13,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:39:13,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:39:13,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 19:39:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:39:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:39:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:39:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:39:14,229 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:39:14,230 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-25 19:39:14,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:14 BoogieIcfgContainer [2020-10-25 19:39:14,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:39:14,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:39:14,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:39:14,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:39:14,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:39:13" (1/3) ... [2020-10-25 19:39:14,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ebd079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:39:14, skipping insertion in model container [2020-10-25 19:39:14,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:13" (2/3) ... [2020-10-25 19:39:14,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ebd079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:39:14, skipping insertion in model container [2020-10-25 19:39:14,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:14" (3/3) ... [2020-10-25 19:39:14,246 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-10-25 19:39:14,260 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:39:14,267 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:39:14,283 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:39:14,331 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:39:14,332 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:39:14,332 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:39:14,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:39:14,332 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:39:14,333 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:39:14,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:39:14,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:39:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-25 19:39:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 19:39:14,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:14,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:14,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:14,373 INFO L82 PathProgramCache]: Analyzing trace with hash -161811697, now seen corresponding path program 1 times [2020-10-25 19:39:14,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:14,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075874370] [2020-10-25 19:39:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:14,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075874370] [2020-10-25 19:39:14,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:14,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:14,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722697804] [2020-10-25 19:39:14,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:14,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:14,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:14,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:14,624 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-25 19:39:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:14,667 INFO L93 Difference]: Finished difference Result 54 states and 86 transitions. [2020-10-25 19:39:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:14,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-25 19:39:14,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:14,681 INFO L225 Difference]: With dead ends: 54 [2020-10-25 19:39:14,682 INFO L226 Difference]: Without dead ends: 39 [2020-10-25 19:39:14,685 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 [2020-10-25 19:39:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-25 19:39:14,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2020-10-25 19:39:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 19:39:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2020-10-25 19:39:14,730 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 12 [2020-10-25 19:39:14,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:14,731 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2020-10-25 19:39:14,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:14,731 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2020-10-25 19:39:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 19:39:14,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:14,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:14,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:39:14,733 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:14,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:14,734 INFO L82 PathProgramCache]: Analyzing trace with hash -971158323, now seen corresponding path program 1 times [2020-10-25 19:39:14,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:14,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455713889] [2020-10-25 19:39:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:14,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455713889] [2020-10-25 19:39:14,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:14,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:14,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104288333] [2020-10-25 19:39:14,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:14,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:14,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:14,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:14,807 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand 3 states. [2020-10-25 19:39:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:14,849 INFO L93 Difference]: Finished difference Result 64 states and 109 transitions. [2020-10-25 19:39:14,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:14,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-25 19:39:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:14,855 INFO L225 Difference]: With dead ends: 64 [2020-10-25 19:39:14,855 INFO L226 Difference]: Without dead ends: 39 [2020-10-25 19:39:14,857 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 [2020-10-25 19:39:14,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-25 19:39:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-25 19:39:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-25 19:39:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 62 transitions. [2020-10-25 19:39:14,871 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 62 transitions. Word has length 12 [2020-10-25 19:39:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:14,872 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 62 transitions. [2020-10-25 19:39:14,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:14,873 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 62 transitions. [2020-10-25 19:39:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 19:39:14,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:14,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:14,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:39:14,877 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:14,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:14,879 INFO L82 PathProgramCache]: Analyzing trace with hash -720980343, now seen corresponding path program 1 times [2020-10-25 19:39:14,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:14,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289069900] [2020-10-25 19:39:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:14,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289069900] [2020-10-25 19:39:14,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:14,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:14,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415951729] [2020-10-25 19:39:14,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:14,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:14,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:14,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:14,960 INFO L87 Difference]: Start difference. First operand 37 states and 62 transitions. Second operand 3 states. [2020-10-25 19:39:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:14,978 INFO L93 Difference]: Finished difference Result 60 states and 96 transitions. [2020-10-25 19:39:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:14,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-25 19:39:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:14,980 INFO L225 Difference]: With dead ends: 60 [2020-10-25 19:39:14,980 INFO L226 Difference]: Without dead ends: 42 [2020-10-25 19:39:14,981 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 [2020-10-25 19:39:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-25 19:39:14,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-25 19:39:14,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-25 19:39:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 64 transitions. [2020-10-25 19:39:14,988 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 64 transitions. Word has length 13 [2020-10-25 19:39:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:14,989 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 64 transitions. [2020-10-25 19:39:14,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 64 transitions. [2020-10-25 19:39:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 19:39:14,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:14,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:14,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:39:14,991 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:14,992 INFO L82 PathProgramCache]: Analyzing trace with hash -40921973, now seen corresponding path program 1 times [2020-10-25 19:39:14,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:14,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200920743] [2020-10-25 19:39:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:15,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200920743] [2020-10-25 19:39:15,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:15,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:15,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022719120] [2020-10-25 19:39:15,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:15,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:15,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:15,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:15,035 INFO L87 Difference]: Start difference. First operand 40 states and 64 transitions. Second operand 3 states. [2020-10-25 19:39:15,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:15,058 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2020-10-25 19:39:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:15,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-25 19:39:15,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:15,060 INFO L225 Difference]: With dead ends: 73 [2020-10-25 19:39:15,061 INFO L226 Difference]: Without dead ends: 71 [2020-10-25 19:39:15,062 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 [2020-10-25 19:39:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-25 19:39:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2020-10-25 19:39:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-25 19:39:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2020-10-25 19:39:15,071 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 85 transitions. Word has length 13 [2020-10-25 19:39:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:15,072 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 85 transitions. [2020-10-25 19:39:15,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 85 transitions. [2020-10-25 19:39:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 19:39:15,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:15,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:15,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:39:15,074 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:15,075 INFO L82 PathProgramCache]: Analyzing trace with hash -850268599, now seen corresponding path program 1 times [2020-10-25 19:39:15,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:15,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662639384] [2020-10-25 19:39:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:15,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662639384] [2020-10-25 19:39:15,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:15,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:15,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337415799] [2020-10-25 19:39:15,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:15,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:15,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:15,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:15,115 INFO L87 Difference]: Start difference. First operand 53 states and 85 transitions. Second operand 3 states. [2020-10-25 19:39:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:15,160 INFO L93 Difference]: Finished difference Result 121 states and 195 transitions. [2020-10-25 19:39:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:15,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-25 19:39:15,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:15,162 INFO L225 Difference]: With dead ends: 121 [2020-10-25 19:39:15,163 INFO L226 Difference]: Without dead ends: 73 [2020-10-25 19:39:15,164 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 [2020-10-25 19:39:15,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-25 19:39:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-25 19:39:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-25 19:39:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2020-10-25 19:39:15,189 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 13 [2020-10-25 19:39:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:15,190 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2020-10-25 19:39:15,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2020-10-25 19:39:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 19:39:15,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:15,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:15,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:39:15,194 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:15,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:15,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1268365854, now seen corresponding path program 1 times [2020-10-25 19:39:15,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:15,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082200550] [2020-10-25 19:39:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:15,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082200550] [2020-10-25 19:39:15,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:15,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:15,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345658732] [2020-10-25 19:39:15,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:15,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:15,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:15,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:15,261 INFO L87 Difference]: Start difference. First operand 71 states and 111 transitions. Second operand 3 states. [2020-10-25 19:39:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:15,278 INFO L93 Difference]: Finished difference Result 108 states and 166 transitions. [2020-10-25 19:39:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:15,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-25 19:39:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:15,280 INFO L225 Difference]: With dead ends: 108 [2020-10-25 19:39:15,280 INFO L226 Difference]: Without dead ends: 75 [2020-10-25 19:39:15,281 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 [2020-10-25 19:39:15,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-25 19:39:15,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-25 19:39:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-25 19:39:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2020-10-25 19:39:15,289 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 14 [2020-10-25 19:39:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:15,290 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2020-10-25 19:39:15,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2020-10-25 19:39:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 19:39:15,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:15,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:15,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 19:39:15,292 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:15,292 INFO L82 PathProgramCache]: Analyzing trace with hash -588307484, now seen corresponding path program 1 times [2020-10-25 19:39:15,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:15,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473575455] [2020-10-25 19:39:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:15,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473575455] [2020-10-25 19:39:15,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:15,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:15,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993994924] [2020-10-25 19:39:15,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:15,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:15,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:15,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:15,329 INFO L87 Difference]: Start difference. First operand 73 states and 111 transitions. Second operand 3 states. [2020-10-25 19:39:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:15,354 INFO L93 Difference]: Finished difference Result 201 states and 305 transitions. [2020-10-25 19:39:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:15,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-25 19:39:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:15,356 INFO L225 Difference]: With dead ends: 201 [2020-10-25 19:39:15,356 INFO L226 Difference]: Without dead ends: 135 [2020-10-25 19:39:15,357 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 [2020-10-25 19:39:15,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-25 19:39:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-10-25 19:39:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-25 19:39:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2020-10-25 19:39:15,372 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 14 [2020-10-25 19:39:15,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:15,372 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2020-10-25 19:39:15,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2020-10-25 19:39:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 19:39:15,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:15,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:15,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 19:39:15,374 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:15,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:15,375 INFO L82 PathProgramCache]: Analyzing trace with hash 221039142, now seen corresponding path program 1 times [2020-10-25 19:39:15,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:15,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992530351] [2020-10-25 19:39:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:15,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992530351] [2020-10-25 19:39:15,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:15,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:15,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429172673] [2020-10-25 19:39:15,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:15,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:15,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:15,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:15,407 INFO L87 Difference]: Start difference. First operand 133 states and 195 transitions. Second operand 3 states. [2020-10-25 19:39:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:15,426 INFO L93 Difference]: Finished difference Result 161 states and 237 transitions. [2020-10-25 19:39:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:15,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-25 19:39:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:15,428 INFO L225 Difference]: With dead ends: 161 [2020-10-25 19:39:15,428 INFO L226 Difference]: Without dead ends: 159 [2020-10-25 19:39:15,429 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 [2020-10-25 19:39:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-25 19:39:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2020-10-25 19:39:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-25 19:39:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2020-10-25 19:39:15,443 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 14 [2020-10-25 19:39:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:15,443 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2020-10-25 19:39:15,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2020-10-25 19:39:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:39:15,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:15,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:15,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 19:39:15,446 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:15,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:15,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1057447170, now seen corresponding path program 1 times [2020-10-25 19:39:15,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:15,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396304972] [2020-10-25 19:39:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:15,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396304972] [2020-10-25 19:39:15,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:15,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:15,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313674333] [2020-10-25 19:39:15,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:15,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:15,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:15,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:15,476 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand 3 states. [2020-10-25 19:39:15,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:15,497 INFO L93 Difference]: Finished difference Result 229 states and 329 transitions. [2020-10-25 19:39:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:15,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 19:39:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:15,499 INFO L225 Difference]: With dead ends: 229 [2020-10-25 19:39:15,500 INFO L226 Difference]: Without dead ends: 227 [2020-10-25 19:39:15,500 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 [2020-10-25 19:39:15,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-25 19:39:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 193. [2020-10-25 19:39:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-25 19:39:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 271 transitions. [2020-10-25 19:39:15,520 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 271 transitions. Word has length 15 [2020-10-25 19:39:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:15,520 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 271 transitions. [2020-10-25 19:39:15,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 271 transitions. [2020-10-25 19:39:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:39:15,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:15,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:15,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 19:39:15,523 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:15,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1866793796, now seen corresponding path program 1 times [2020-10-25 19:39:15,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:15,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960305594] [2020-10-25 19:39:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:15,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960305594] [2020-10-25 19:39:15,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:15,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:15,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88768964] [2020-10-25 19:39:15,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:15,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:15,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:15,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:15,558 INFO L87 Difference]: Start difference. First operand 193 states and 271 transitions. Second operand 3 states. [2020-10-25 19:39:15,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:15,582 INFO L93 Difference]: Finished difference Result 437 states and 609 transitions. [2020-10-25 19:39:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:15,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 19:39:15,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:15,585 INFO L225 Difference]: With dead ends: 437 [2020-10-25 19:39:15,585 INFO L226 Difference]: Without dead ends: 251 [2020-10-25 19:39:15,587 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 [2020-10-25 19:39:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-25 19:39:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2020-10-25 19:39:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-25 19:39:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 331 transitions. [2020-10-25 19:39:15,608 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 331 transitions. Word has length 15 [2020-10-25 19:39:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:15,609 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 331 transitions. [2020-10-25 19:39:15,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 331 transitions. [2020-10-25 19:39:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:39:15,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:15,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:15,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-25 19:39:15,612 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:15,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1579092089, now seen corresponding path program 1 times [2020-10-25 19:39:15,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:15,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169518879] [2020-10-25 19:39:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:15,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169518879] [2020-10-25 19:39:15,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:15,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:15,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512885079] [2020-10-25 19:39:15,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:15,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:15,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:15,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:15,639 INFO L87 Difference]: Start difference. First operand 249 states and 331 transitions. Second operand 3 states. [2020-10-25 19:39:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:15,659 INFO L93 Difference]: Finished difference Result 381 states and 505 transitions. [2020-10-25 19:39:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:15,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 19:39:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:15,662 INFO L225 Difference]: With dead ends: 381 [2020-10-25 19:39:15,662 INFO L226 Difference]: Without dead ends: 263 [2020-10-25 19:39:15,664 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 [2020-10-25 19:39:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-25 19:39:15,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2020-10-25 19:39:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-25 19:39:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 339 transitions. [2020-10-25 19:39:15,678 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 339 transitions. Word has length 16 [2020-10-25 19:39:15,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:15,679 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 339 transitions. [2020-10-25 19:39:15,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 339 transitions. [2020-10-25 19:39:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:39:15,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:15,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:15,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-25 19:39:15,682 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:15,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:15,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2035816837, now seen corresponding path program 1 times [2020-10-25 19:39:15,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:15,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576208923] [2020-10-25 19:39:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:15,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576208923] [2020-10-25 19:39:15,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:15,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:15,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956939598] [2020-10-25 19:39:15,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:15,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:15,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:15,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:15,713 INFO L87 Difference]: Start difference. First operand 261 states and 339 transitions. Second operand 3 states. [2020-10-25 19:39:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:15,739 INFO L93 Difference]: Finished difference Result 423 states and 540 transitions. [2020-10-25 19:39:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:15,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 19:39:15,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:15,743 INFO L225 Difference]: With dead ends: 423 [2020-10-25 19:39:15,743 INFO L226 Difference]: Without dead ends: 421 [2020-10-25 19:39:15,744 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 [2020-10-25 19:39:15,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-25 19:39:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 389. [2020-10-25 19:39:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-25 19:39:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 491 transitions. [2020-10-25 19:39:15,758 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 491 transitions. Word has length 16 [2020-10-25 19:39:15,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:15,759 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 491 transitions. [2020-10-25 19:39:15,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 491 transitions. [2020-10-25 19:39:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:39:15,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:15,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:15,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-25 19:39:15,762 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:15,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:15,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1449803833, now seen corresponding path program 1 times [2020-10-25 19:39:15,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:15,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894426643] [2020-10-25 19:39:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:15,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894426643] [2020-10-25 19:39:15,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:15,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:15,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969403147] [2020-10-25 19:39:15,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:15,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:15,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:15,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:15,797 INFO L87 Difference]: Start difference. First operand 389 states and 491 transitions. Second operand 3 states. [2020-10-25 19:39:15,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:15,847 INFO L93 Difference]: Finished difference Result 853 states and 1051 transitions. [2020-10-25 19:39:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:15,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 19:39:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:15,848 INFO L225 Difference]: With dead ends: 853 [2020-10-25 19:39:15,848 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 19:39:15,850 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 [2020-10-25 19:39:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 19:39:15,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 19:39:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 19:39:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 19:39:15,852 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-25 19:39:15,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:15,852 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 19:39:15,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 19:39:15,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 19:39:15,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-25 19:39:15,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 19:39:15,872 INFO L277 CegarLoopResult]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2020-10-25 19:39:15,872 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 19:39:15,872 INFO L277 CegarLoopResult]: At program point L94(lines 6 95) the Hoare annotation is: true [2020-10-25 19:39:15,872 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 19:39:15,873 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 19:39:15,873 INFO L274 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-10-25 19:39:15,873 INFO L274 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-10-25 19:39:15,873 INFO L270 CegarLoopResult]: At program point L86-1(lines 7 95) the Hoare annotation is: false [2020-10-25 19:39:15,873 INFO L274 CegarLoopResult]: For program point L70-1(lines 26 90) no Hoare annotation was computed. [2020-10-25 19:39:15,873 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-10-25 19:39:15,873 INFO L274 CegarLoopResult]: For program point L55-1(lines 26 90) no Hoare annotation was computed. [2020-10-25 19:39:15,874 INFO L274 CegarLoopResult]: For program point L80-1(lines 26 90) no Hoare annotation was computed. [2020-10-25 19:39:15,874 INFO L274 CegarLoopResult]: For program point L47-1(lines 26 90) no Hoare annotation was computed. [2020-10-25 19:39:15,874 INFO L274 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-10-25 19:39:15,874 INFO L274 CegarLoopResult]: For program point L65-1(lines 26 90) no Hoare annotation was computed. [2020-10-25 19:39:15,874 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 19:39:15,874 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 19:39:15,874 INFO L274 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-10-25 19:39:15,874 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 19:39:15,875 INFO L277 CegarLoopResult]: At program point L91(lines 7 95) the Hoare annotation is: true [2020-10-25 19:39:15,875 INFO L274 CegarLoopResult]: For program point L75-1(lines 26 90) no Hoare annotation was computed. [2020-10-25 19:39:15,875 INFO L274 CegarLoopResult]: For program point L59-1(lines 26 90) no Hoare annotation was computed. [2020-10-25 19:39:15,875 INFO L274 CegarLoopResult]: For program point L51-1(lines 26 90) no Hoare annotation was computed. [2020-10-25 19:39:15,875 INFO L274 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-10-25 19:39:15,875 INFO L274 CegarLoopResult]: For program point L43(lines 43 45) no Hoare annotation was computed. [2020-10-25 19:39:15,875 INFO L274 CegarLoopResult]: For program point L43-2(lines 26 90) no Hoare annotation was computed. [2020-10-25 19:39:15,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:39:15 BoogieIcfgContainer [2020-10-25 19:39:15,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:39:15,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:39:15,887 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:39:15,887 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:39:15,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:14" (3/4) ... [2020-10-25 19:39:15,891 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 19:39:15,904 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 19:39:15,904 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 19:39:15,904 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:39:15,904 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:39:15,960 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:39:15,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:39:15,963 INFO L168 Benchmark]: Toolchain (without parser) took 2744.89 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 31.4 MB in the beginning and 40.0 MB in the end (delta: -8.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:15,964 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 37.7 MB. Free memory was 20.7 MB in the beginning and 20.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:39:15,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.55 ms. Allocated memory is still 46.1 MB. Free memory was 30.8 MB in the beginning and 21.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:15,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.50 ms. Allocated memory is still 46.1 MB. Free memory was 21.2 MB in the beginning and 31.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:15,965 INFO L168 Benchmark]: Boogie Preprocessor took 24.24 ms. Allocated memory is still 46.1 MB. Free memory was 31.8 MB in the beginning and 30.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:39:15,966 INFO L168 Benchmark]: RCFGBuilder took 665.56 ms. Allocated memory is still 46.1 MB. Free memory was 30.7 MB in the beginning and 25.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:15,967 INFO L168 Benchmark]: TraceAbstraction took 1649.47 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.4 MB in the beginning and 21.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:15,967 INFO L168 Benchmark]: Witness Printer took 74.01 ms. Allocated memory is still 56.6 MB. Free memory was 21.1 MB in the beginning and 40.0 MB in the end (delta: -18.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:15,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 37.7 MB. Free memory was 20.7 MB in the beginning and 20.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.55 ms. Allocated memory is still 46.1 MB. Free memory was 30.8 MB in the beginning and 21.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.50 ms. Allocated memory is still 46.1 MB. Free memory was 21.2 MB in the beginning and 31.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.24 ms. Allocated memory is still 46.1 MB. Free memory was 31.8 MB in the beginning and 30.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 665.56 ms. Allocated memory is still 46.1 MB. Free memory was 30.7 MB in the beginning and 25.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1649.47 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.4 MB in the beginning and 21.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * Witness Printer took 74.01 ms. Allocated memory is still 56.6 MB. Free memory was 21.1 MB in the beginning and 40.0 MB in the end (delta: -18.9 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: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 574 SDtfs, 264 SDslu, 358 SDs, 0 SdLazy, 69 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 136 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 41 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 4278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...