./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_8.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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_8.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 37d0ed05d77a0379c9ed98058bf2f327252773ce .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:24:56,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:24:56,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:24:56,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:24:56,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:24:56,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:24:56,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:24:56,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:24:56,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:24:56,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:24:56,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:24:56,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:24:56,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:24:56,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:24:56,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:24:56,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:24:56,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:24:56,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:24:56,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:24:56,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:24:56,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:24:56,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:24:56,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:24:56,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:24:56,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:24:56,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:24:56,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:24:56,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:24:56,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:24:56,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:24:56,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:24:56,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:24:56,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:24:56,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:24:56,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:24:56,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:24:56,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:24:56,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:24:56,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:24:56,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:24:56,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:24:56,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:24:56,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:24:56,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:24:56,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:24:56,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:24:56,379 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:24:56,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:24:56,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:24:56,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:24:56,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:24:56,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:24:56,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:24:56,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:24:56,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:24:56,383 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:24:56,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:24:56,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:24:56,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:24:56,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:24:56,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:24:56,384 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:24:56,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:24:56,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:24:56,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:24:56,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:24:56,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:24:56,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:24:56,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:24:56,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:24:56,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:24:56,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 37d0ed05d77a0379c9ed98058bf2f327252773ce [2020-10-19 22:24:56,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:24:56,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:24:56,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:24:56,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:24:56,630 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:24:56,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_8.c [2020-10-19 22:24:56,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab47d70de/583be9f7853d41338b9c33d4362b38bd/FLAG45930a061 [2020-10-19 22:24:57,263 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:24:57,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_8.c [2020-10-19 22:24:57,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab47d70de/583be9f7853d41338b9c33d4362b38bd/FLAG45930a061 [2020-10-19 22:24:57,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab47d70de/583be9f7853d41338b9c33d4362b38bd [2020-10-19 22:24:57,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:24:57,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:24:57,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:24:57,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:24:57,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:24:57,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:57,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7217afda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57, skipping insertion in model container [2020-10-19 22:24:57,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:57,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:24:57,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:24:57,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:24:57,872 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:24:57,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:24:57,933 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:24:57,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57 WrapperNode [2020-10-19 22:24:57,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:24:57,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:24:57,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:24:57,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:24:57,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:57,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:57,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:24:57,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:24:57,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:24:57,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:24:57,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:57,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:57,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:57,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:57,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:58,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:58,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (1/1) ... [2020-10-19 22:24:58,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:24:58,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:24:58,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:24:58,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:24:58,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (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 [2020-10-19 22:24:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:24:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:24:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:24:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:24:58,389 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:24:58,389 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-19 22:24:58,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:58 BoogieIcfgContainer [2020-10-19 22:24:58,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:24:58,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:24:58,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:24:58,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:24:58,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:24:57" (1/3) ... [2020-10-19 22:24:58,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35387e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:24:58, skipping insertion in model container [2020-10-19 22:24:58,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:57" (2/3) ... [2020-10-19 22:24:58,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35387e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:24:58, skipping insertion in model container [2020-10-19 22:24:58,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:58" (3/3) ... [2020-10-19 22:24:58,400 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2020-10-19 22:24:58,414 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:24:58,425 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:24:58,443 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:24:58,473 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:24:58,473 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:24:58,473 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:24:58,474 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:24:58,474 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:24:58,474 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:24:58,474 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:24:58,474 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:24:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-19 22:24:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 22:24:58,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:58,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:58,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:58,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:58,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1577492323, now seen corresponding path program 1 times [2020-10-19 22:24:58,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:58,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425205209] [2020-10-19 22:24:58,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:58,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425205209] [2020-10-19 22:24:58,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:58,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:58,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429986185] [2020-10-19 22:24:58,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:58,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:58,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:58,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:58,750 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-19 22:24:58,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:58,821 INFO L93 Difference]: Finished difference Result 72 states and 122 transitions. [2020-10-19 22:24:58,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:58,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-19 22:24:58,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:58,837 INFO L225 Difference]: With dead ends: 72 [2020-10-19 22:24:58,837 INFO L226 Difference]: Without dead ends: 57 [2020-10-19 22:24:58,840 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 [2020-10-19 22:24:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-19 22:24:58,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-10-19 22:24:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 22:24:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 70 transitions. [2020-10-19 22:24:58,877 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 70 transitions. Word has length 15 [2020-10-19 22:24:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:58,878 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 70 transitions. [2020-10-19 22:24:58,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 70 transitions. [2020-10-19 22:24:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 22:24:58,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:58,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:58,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:24:58,880 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:58,880 INFO L82 PathProgramCache]: Analyzing trace with hash -876427745, now seen corresponding path program 1 times [2020-10-19 22:24:58,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:58,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422503518] [2020-10-19 22:24:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:58,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422503518] [2020-10-19 22:24:58,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:58,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:58,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511353620] [2020-10-19 22:24:58,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:58,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:58,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:58,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:58,949 INFO L87 Difference]: Start difference. First operand 39 states and 70 transitions. Second operand 3 states. [2020-10-19 22:24:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:58,998 INFO L93 Difference]: Finished difference Result 94 states and 169 transitions. [2020-10-19 22:24:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:58,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-19 22:24:58,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:59,000 INFO L225 Difference]: With dead ends: 94 [2020-10-19 22:24:59,000 INFO L226 Difference]: Without dead ends: 57 [2020-10-19 22:24:59,001 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 [2020-10-19 22:24:59,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-19 22:24:59,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-19 22:24:59,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-19 22:24:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-10-19 22:24:59,010 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 15 [2020-10-19 22:24:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:59,011 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-10-19 22:24:59,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:59,011 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-10-19 22:24:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 22:24:59,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:59,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:59,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:24:59,013 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:59,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:59,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1657407761, now seen corresponding path program 1 times [2020-10-19 22:24:59,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:59,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42013938] [2020-10-19 22:24:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:59,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42013938] [2020-10-19 22:24:59,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:59,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:59,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871389800] [2020-10-19 22:24:59,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:59,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:59,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:59,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:59,070 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 3 states. [2020-10-19 22:24:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:59,091 INFO L93 Difference]: Finished difference Result 87 states and 150 transitions. [2020-10-19 22:24:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:59,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-19 22:24:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:59,093 INFO L225 Difference]: With dead ends: 87 [2020-10-19 22:24:59,094 INFO L226 Difference]: Without dead ends: 60 [2020-10-19 22:24:59,094 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 [2020-10-19 22:24:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-19 22:24:59,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-19 22:24:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-19 22:24:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 100 transitions. [2020-10-19 22:24:59,105 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 100 transitions. Word has length 16 [2020-10-19 22:24:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:59,106 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 100 transitions. [2020-10-19 22:24:59,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:59,106 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 100 transitions. [2020-10-19 22:24:59,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 22:24:59,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:59,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:59,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:24:59,108 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:59,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:59,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1399242323, now seen corresponding path program 1 times [2020-10-19 22:24:59,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:59,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132612510] [2020-10-19 22:24:59,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:59,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132612510] [2020-10-19 22:24:59,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:59,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:59,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631491019] [2020-10-19 22:24:59,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:59,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:59,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:59,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:59,196 INFO L87 Difference]: Start difference. First operand 58 states and 100 transitions. Second operand 3 states. [2020-10-19 22:24:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:59,219 INFO L93 Difference]: Finished difference Result 109 states and 189 transitions. [2020-10-19 22:24:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:59,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-19 22:24:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:59,221 INFO L225 Difference]: With dead ends: 109 [2020-10-19 22:24:59,222 INFO L226 Difference]: Without dead ends: 107 [2020-10-19 22:24:59,222 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 [2020-10-19 22:24:59,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-19 22:24:59,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2020-10-19 22:24:59,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-19 22:24:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2020-10-19 22:24:59,234 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2020-10-19 22:24:59,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:59,235 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2020-10-19 22:24:59,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2020-10-19 22:24:59,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 22:24:59,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:59,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:59,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:24:59,237 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:59,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:59,237 INFO L82 PathProgramCache]: Analyzing trace with hash -698177745, now seen corresponding path program 1 times [2020-10-19 22:24:59,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:59,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221276210] [2020-10-19 22:24:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:59,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221276210] [2020-10-19 22:24:59,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:59,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:59,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031182085] [2020-10-19 22:24:59,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:59,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:59,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:59,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:59,284 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 3 states. [2020-10-19 22:24:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:59,320 INFO L93 Difference]: Finished difference Result 181 states and 315 transitions. [2020-10-19 22:24:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:59,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-19 22:24:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:59,322 INFO L225 Difference]: With dead ends: 181 [2020-10-19 22:24:59,322 INFO L226 Difference]: Without dead ends: 109 [2020-10-19 22:24:59,323 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 [2020-10-19 22:24:59,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-19 22:24:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-10-19 22:24:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-19 22:24:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 183 transitions. [2020-10-19 22:24:59,336 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 183 transitions. Word has length 16 [2020-10-19 22:24:59,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:59,336 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 183 transitions. [2020-10-19 22:24:59,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 183 transitions. [2020-10-19 22:24:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 22:24:59,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:59,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:59,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:24:59,338 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:59,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:59,339 INFO L82 PathProgramCache]: Analyzing trace with hash -426624716, now seen corresponding path program 1 times [2020-10-19 22:24:59,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:59,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435319682] [2020-10-19 22:24:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:59,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435319682] [2020-10-19 22:24:59,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:59,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:59,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162640650] [2020-10-19 22:24:59,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:59,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:59,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:59,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:59,383 INFO L87 Difference]: Start difference. First operand 107 states and 183 transitions. Second operand 3 states. [2020-10-19 22:24:59,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:59,400 INFO L93 Difference]: Finished difference Result 162 states and 274 transitions. [2020-10-19 22:24:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:59,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-19 22:24:59,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:59,402 INFO L225 Difference]: With dead ends: 162 [2020-10-19 22:24:59,403 INFO L226 Difference]: Without dead ends: 111 [2020-10-19 22:24:59,403 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 [2020-10-19 22:24:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-19 22:24:59,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-19 22:24:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-19 22:24:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 183 transitions. [2020-10-19 22:24:59,419 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 183 transitions. Word has length 17 [2020-10-19 22:24:59,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:59,419 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 183 transitions. [2020-10-19 22:24:59,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:59,419 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 183 transitions. [2020-10-19 22:24:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 22:24:59,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:59,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:59,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:24:59,424 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:59,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:59,424 INFO L82 PathProgramCache]: Analyzing trace with hash -168459278, now seen corresponding path program 1 times [2020-10-19 22:24:59,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:59,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194407750] [2020-10-19 22:24:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:59,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194407750] [2020-10-19 22:24:59,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:59,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:59,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848753548] [2020-10-19 22:24:59,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:59,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:59,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:59,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:59,490 INFO L87 Difference]: Start difference. First operand 109 states and 183 transitions. Second operand 3 states. [2020-10-19 22:24:59,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:59,508 INFO L93 Difference]: Finished difference Result 309 states and 521 transitions. [2020-10-19 22:24:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:59,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-19 22:24:59,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:59,511 INFO L225 Difference]: With dead ends: 309 [2020-10-19 22:24:59,511 INFO L226 Difference]: Without dead ends: 207 [2020-10-19 22:24:59,512 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 [2020-10-19 22:24:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-19 22:24:59,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-10-19 22:24:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-19 22:24:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 339 transitions. [2020-10-19 22:24:59,548 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 339 transitions. Word has length 17 [2020-10-19 22:24:59,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:59,548 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 339 transitions. [2020-10-19 22:24:59,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 339 transitions. [2020-10-19 22:24:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 22:24:59,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:59,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:59,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:24:59,550 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:59,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:59,550 INFO L82 PathProgramCache]: Analyzing trace with hash -869523856, now seen corresponding path program 1 times [2020-10-19 22:24:59,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:59,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085146118] [2020-10-19 22:24:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:59,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085146118] [2020-10-19 22:24:59,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:59,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:59,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174870907] [2020-10-19 22:24:59,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:59,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:59,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:59,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:59,580 INFO L87 Difference]: Start difference. First operand 205 states and 339 transitions. Second operand 3 states. [2020-10-19 22:24:59,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:59,596 INFO L93 Difference]: Finished difference Result 257 states and 429 transitions. [2020-10-19 22:24:59,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:59,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-19 22:24:59,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:59,598 INFO L225 Difference]: With dead ends: 257 [2020-10-19 22:24:59,599 INFO L226 Difference]: Without dead ends: 255 [2020-10-19 22:24:59,599 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 [2020-10-19 22:24:59,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-19 22:24:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2020-10-19 22:24:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-19 22:24:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 335 transitions. [2020-10-19 22:24:59,616 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 335 transitions. Word has length 17 [2020-10-19 22:24:59,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:59,616 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 335 transitions. [2020-10-19 22:24:59,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:59,617 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 335 transitions. [2020-10-19 22:24:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:24:59,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:59,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:59,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:24:59,619 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:59,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:59,619 INFO L82 PathProgramCache]: Analyzing trace with hash -927055644, now seen corresponding path program 1 times [2020-10-19 22:24:59,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:59,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913027176] [2020-10-19 22:24:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:59,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913027176] [2020-10-19 22:24:59,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:59,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:59,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567335864] [2020-10-19 22:24:59,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:59,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:59,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:59,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:59,646 INFO L87 Difference]: Start difference. First operand 205 states and 335 transitions. Second operand 3 states. [2020-10-19 22:24:59,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:59,667 INFO L93 Difference]: Finished difference Result 373 states and 617 transitions. [2020-10-19 22:24:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:59,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-19 22:24:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:59,670 INFO L225 Difference]: With dead ends: 373 [2020-10-19 22:24:59,670 INFO L226 Difference]: Without dead ends: 371 [2020-10-19 22:24:59,671 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 [2020-10-19 22:24:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-10-19 22:24:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 289. [2020-10-19 22:24:59,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-19 22:24:59,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 463 transitions. [2020-10-19 22:24:59,687 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 463 transitions. Word has length 18 [2020-10-19 22:24:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:59,688 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 463 transitions. [2020-10-19 22:24:59,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 463 transitions. [2020-10-19 22:24:59,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:24:59,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:59,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:59,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:24:59,691 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:59,691 INFO L82 PathProgramCache]: Analyzing trace with hash -225991066, now seen corresponding path program 1 times [2020-10-19 22:24:59,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:59,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461850752] [2020-10-19 22:24:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:59,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461850752] [2020-10-19 22:24:59,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:59,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:59,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830607678] [2020-10-19 22:24:59,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:59,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:59,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:59,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:59,730 INFO L87 Difference]: Start difference. First operand 289 states and 463 transitions. Second operand 3 states. [2020-10-19 22:24:59,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:59,753 INFO L93 Difference]: Finished difference Result 677 states and 1089 transitions. [2020-10-19 22:24:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:59,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-19 22:24:59,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:59,756 INFO L225 Difference]: With dead ends: 677 [2020-10-19 22:24:59,757 INFO L226 Difference]: Without dead ends: 395 [2020-10-19 22:24:59,758 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 [2020-10-19 22:24:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-19 22:24:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2020-10-19 22:24:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-19 22:24:59,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 619 transitions. [2020-10-19 22:24:59,784 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 619 transitions. Word has length 18 [2020-10-19 22:24:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:59,785 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 619 transitions. [2020-10-19 22:24:59,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 619 transitions. [2020-10-19 22:24:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 22:24:59,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:59,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:59,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:24:59,790 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:59,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1326261127, now seen corresponding path program 1 times [2020-10-19 22:24:59,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:59,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818572723] [2020-10-19 22:24:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:59,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818572723] [2020-10-19 22:24:59,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:59,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:59,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250456673] [2020-10-19 22:24:59,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:59,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:59,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:59,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:59,838 INFO L87 Difference]: Start difference. First operand 393 states and 619 transitions. Second operand 3 states. [2020-10-19 22:24:59,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:59,877 INFO L93 Difference]: Finished difference Result 597 states and 937 transitions. [2020-10-19 22:24:59,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:59,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-19 22:24:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:59,881 INFO L225 Difference]: With dead ends: 597 [2020-10-19 22:24:59,881 INFO L226 Difference]: Without dead ends: 407 [2020-10-19 22:24:59,884 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 [2020-10-19 22:24:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-19 22:24:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2020-10-19 22:24:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-19 22:24:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 627 transitions. [2020-10-19 22:24:59,903 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 627 transitions. Word has length 19 [2020-10-19 22:24:59,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:59,903 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 627 transitions. [2020-10-19 22:24:59,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 627 transitions. [2020-10-19 22:24:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 22:24:59,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:59,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:59,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:24:59,905 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:59,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1584426565, now seen corresponding path program 1 times [2020-10-19 22:24:59,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:59,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734399322] [2020-10-19 22:24:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:59,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734399322] [2020-10-19 22:24:59,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:59,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:59,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216467013] [2020-10-19 22:24:59,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:59,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:59,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:59,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:59,975 INFO L87 Difference]: Start difference. First operand 405 states and 627 transitions. Second operand 3 states. [2020-10-19 22:25:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:00,001 INFO L93 Difference]: Finished difference Result 713 states and 1117 transitions. [2020-10-19 22:25:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:00,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-19 22:25:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:00,006 INFO L225 Difference]: With dead ends: 713 [2020-10-19 22:25:00,006 INFO L226 Difference]: Without dead ends: 711 [2020-10-19 22:25:00,007 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 [2020-10-19 22:25:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-10-19 22:25:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 581. [2020-10-19 22:25:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-10-19 22:25:00,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 875 transitions. [2020-10-19 22:25:00,027 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 875 transitions. Word has length 19 [2020-10-19 22:25:00,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:00,029 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 875 transitions. [2020-10-19 22:25:00,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 875 transitions. [2020-10-19 22:25:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 22:25:00,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:25:00,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:25:00,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:25:00,031 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:25:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:25:00,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2009476153, now seen corresponding path program 1 times [2020-10-19 22:25:00,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:25:00,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167710375] [2020-10-19 22:25:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:25:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:25:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:25:00,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167710375] [2020-10-19 22:25:00,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:25:00,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:25:00,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017766487] [2020-10-19 22:25:00,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:25:00,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:25:00,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:25:00,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:00,061 INFO L87 Difference]: Start difference. First operand 581 states and 875 transitions. Second operand 3 states. [2020-10-19 22:25:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:00,086 INFO L93 Difference]: Finished difference Result 1337 states and 2013 transitions. [2020-10-19 22:25:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:00,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-19 22:25:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:00,091 INFO L225 Difference]: With dead ends: 1337 [2020-10-19 22:25:00,091 INFO L226 Difference]: Without dead ends: 775 [2020-10-19 22:25:00,092 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 [2020-10-19 22:25:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-10-19 22:25:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2020-10-19 22:25:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-10-19 22:25:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1139 transitions. [2020-10-19 22:25:00,113 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1139 transitions. Word has length 19 [2020-10-19 22:25:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:00,113 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1139 transitions. [2020-10-19 22:25:00,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1139 transitions. [2020-10-19 22:25:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 22:25:00,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:25:00,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:25:00,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:25:00,127 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:25:00,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:25:00,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1872798619, now seen corresponding path program 1 times [2020-10-19 22:25:00,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:25:00,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945114509] [2020-10-19 22:25:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:25:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:25:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:25:00,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945114509] [2020-10-19 22:25:00,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:25:00,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:25:00,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160506686] [2020-10-19 22:25:00,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:25:00,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:25:00,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:25:00,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:00,156 INFO L87 Difference]: Start difference. First operand 773 states and 1139 transitions. Second operand 3 states. [2020-10-19 22:25:00,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:00,178 INFO L93 Difference]: Finished difference Result 1161 states and 1701 transitions. [2020-10-19 22:25:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:00,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-19 22:25:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:00,183 INFO L225 Difference]: With dead ends: 1161 [2020-10-19 22:25:00,183 INFO L226 Difference]: Without dead ends: 791 [2020-10-19 22:25:00,184 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 [2020-10-19 22:25:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-10-19 22:25:00,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 789. [2020-10-19 22:25:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-10-19 22:25:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1139 transitions. [2020-10-19 22:25:00,206 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1139 transitions. Word has length 20 [2020-10-19 22:25:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:00,206 INFO L481 AbstractCegarLoop]: Abstraction has 789 states and 1139 transitions. [2020-10-19 22:25:00,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1139 transitions. [2020-10-19 22:25:00,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 22:25:00,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:25:00,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:25:00,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:25:00,208 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:25:00,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:25:00,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2130964057, now seen corresponding path program 1 times [2020-10-19 22:25:00,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:25:00,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074613660] [2020-10-19 22:25:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:25:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:25:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:25:00,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074613660] [2020-10-19 22:25:00,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:25:00,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:25:00,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577702032] [2020-10-19 22:25:00,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:25:00,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:25:00,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:25:00,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:00,231 INFO L87 Difference]: Start difference. First operand 789 states and 1139 transitions. Second operand 3 states. [2020-10-19 22:25:00,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:00,271 INFO L93 Difference]: Finished difference Result 1353 states and 1973 transitions. [2020-10-19 22:25:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:00,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-19 22:25:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:00,278 INFO L225 Difference]: With dead ends: 1353 [2020-10-19 22:25:00,278 INFO L226 Difference]: Without dead ends: 1351 [2020-10-19 22:25:00,279 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 [2020-10-19 22:25:00,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-10-19 22:25:00,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1157. [2020-10-19 22:25:00,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-10-19 22:25:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1619 transitions. [2020-10-19 22:25:00,310 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1619 transitions. Word has length 20 [2020-10-19 22:25:00,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:00,311 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1619 transitions. [2020-10-19 22:25:00,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:00,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1619 transitions. [2020-10-19 22:25:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 22:25:00,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:25:00,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:25:00,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:25:00,314 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:25:00,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:25:00,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1462938661, now seen corresponding path program 1 times [2020-10-19 22:25:00,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:25:00,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520693898] [2020-10-19 22:25:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:25:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:25:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:25:00,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520693898] [2020-10-19 22:25:00,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:25:00,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:25:00,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785414185] [2020-10-19 22:25:00,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:25:00,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:25:00,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:25:00,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:00,337 INFO L87 Difference]: Start difference. First operand 1157 states and 1619 transitions. Second operand 3 states. [2020-10-19 22:25:00,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:00,376 INFO L93 Difference]: Finished difference Result 2633 states and 3669 transitions. [2020-10-19 22:25:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:00,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-19 22:25:00,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:00,384 INFO L225 Difference]: With dead ends: 2633 [2020-10-19 22:25:00,385 INFO L226 Difference]: Without dead ends: 1511 [2020-10-19 22:25:00,387 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 [2020-10-19 22:25:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2020-10-19 22:25:00,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2020-10-19 22:25:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-10-19 22:25:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2051 transitions. [2020-10-19 22:25:00,443 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2051 transitions. Word has length 20 [2020-10-19 22:25:00,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:00,443 INFO L481 AbstractCegarLoop]: Abstraction has 1509 states and 2051 transitions. [2020-10-19 22:25:00,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:00,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2051 transitions. [2020-10-19 22:25:00,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 22:25:00,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:25:00,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:25:00,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 22:25:00,447 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:25:00,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:25:00,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1635592028, now seen corresponding path program 1 times [2020-10-19 22:25:00,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:25:00,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392531456] [2020-10-19 22:25:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:25:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:25:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:25:00,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392531456] [2020-10-19 22:25:00,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:25:00,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:25:00,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962993757] [2020-10-19 22:25:00,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:25:00,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:25:00,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:25:00,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:00,470 INFO L87 Difference]: Start difference. First operand 1509 states and 2051 transitions. Second operand 3 states. [2020-10-19 22:25:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:00,505 INFO L93 Difference]: Finished difference Result 2265 states and 3061 transitions. [2020-10-19 22:25:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:00,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-19 22:25:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:00,514 INFO L225 Difference]: With dead ends: 2265 [2020-10-19 22:25:00,515 INFO L226 Difference]: Without dead ends: 1543 [2020-10-19 22:25:00,516 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 [2020-10-19 22:25:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-10-19 22:25:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2020-10-19 22:25:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-10-19 22:25:00,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2051 transitions. [2020-10-19 22:25:00,611 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2051 transitions. Word has length 21 [2020-10-19 22:25:00,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:00,611 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2051 transitions. [2020-10-19 22:25:00,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:00,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2051 transitions. [2020-10-19 22:25:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 22:25:00,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:25:00,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:25:00,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 22:25:00,615 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:25:00,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:25:00,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1893757466, now seen corresponding path program 1 times [2020-10-19 22:25:00,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:25:00,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250442094] [2020-10-19 22:25:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:25:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:25:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:25:00,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250442094] [2020-10-19 22:25:00,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:25:00,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:25:00,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683232430] [2020-10-19 22:25:00,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:25:00,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:25:00,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:25:00,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:00,657 INFO L87 Difference]: Start difference. First operand 1541 states and 2051 transitions. Second operand 3 states. [2020-10-19 22:25:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:00,729 INFO L93 Difference]: Finished difference Result 2569 states and 3429 transitions. [2020-10-19 22:25:00,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:00,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-19 22:25:00,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:00,744 INFO L225 Difference]: With dead ends: 2569 [2020-10-19 22:25:00,744 INFO L226 Difference]: Without dead ends: 2567 [2020-10-19 22:25:00,749 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 [2020-10-19 22:25:00,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2020-10-19 22:25:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2309. [2020-10-19 22:25:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-10-19 22:25:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2979 transitions. [2020-10-19 22:25:00,855 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2979 transitions. Word has length 21 [2020-10-19 22:25:00,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:00,855 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 2979 transitions. [2020-10-19 22:25:00,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2979 transitions. [2020-10-19 22:25:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 22:25:00,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:25:00,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:25:00,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 22:25:00,861 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:25:00,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:25:00,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1700145252, now seen corresponding path program 1 times [2020-10-19 22:25:00,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:25:00,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306872698] [2020-10-19 22:25:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:25:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:25:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:25:00,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306872698] [2020-10-19 22:25:00,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:25:00,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:25:00,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90780571] [2020-10-19 22:25:00,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:25:00,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:25:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:25:00,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:00,898 INFO L87 Difference]: Start difference. First operand 2309 states and 2979 transitions. Second operand 3 states. [2020-10-19 22:25:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:01,012 INFO L93 Difference]: Finished difference Result 5193 states and 6629 transitions. [2020-10-19 22:25:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:01,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-19 22:25:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:01,029 INFO L225 Difference]: With dead ends: 5193 [2020-10-19 22:25:01,029 INFO L226 Difference]: Without dead ends: 2951 [2020-10-19 22:25:01,033 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 [2020-10-19 22:25:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-10-19 22:25:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2949. [2020-10-19 22:25:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2949 states. [2020-10-19 22:25:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3651 transitions. [2020-10-19 22:25:01,169 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3651 transitions. Word has length 21 [2020-10-19 22:25:01,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:01,170 INFO L481 AbstractCegarLoop]: Abstraction has 2949 states and 3651 transitions. [2020-10-19 22:25:01,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3651 transitions. [2020-10-19 22:25:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:25:01,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:25:01,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:25:01,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 22:25:01,175 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:25:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:25:01,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1422844656, now seen corresponding path program 1 times [2020-10-19 22:25:01,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:25:01,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184244185] [2020-10-19 22:25:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:25:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:25:01,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:25:01,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184244185] [2020-10-19 22:25:01,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:25:01,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:25:01,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364357504] [2020-10-19 22:25:01,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:25:01,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:25:01,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:25:01,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:01,207 INFO L87 Difference]: Start difference. First operand 2949 states and 3651 transitions. Second operand 3 states. [2020-10-19 22:25:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:01,291 INFO L93 Difference]: Finished difference Result 4425 states and 5445 transitions. [2020-10-19 22:25:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:01,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-19 22:25:01,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:01,305 INFO L225 Difference]: With dead ends: 4425 [2020-10-19 22:25:01,306 INFO L226 Difference]: Without dead ends: 3015 [2020-10-19 22:25:01,308 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 [2020-10-19 22:25:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-10-19 22:25:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3013. [2020-10-19 22:25:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3013 states. [2020-10-19 22:25:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3651 transitions. [2020-10-19 22:25:01,406 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3651 transitions. Word has length 22 [2020-10-19 22:25:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:01,406 INFO L481 AbstractCegarLoop]: Abstraction has 3013 states and 3651 transitions. [2020-10-19 22:25:01,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3651 transitions. [2020-10-19 22:25:01,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:25:01,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:25:01,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:25:01,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:25:01,448 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:25:01,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:25:01,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1164679218, now seen corresponding path program 1 times [2020-10-19 22:25:01,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:25:01,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626061577] [2020-10-19 22:25:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:25:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:25:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:25:01,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626061577] [2020-10-19 22:25:01,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:25:01,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:25:01,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537106700] [2020-10-19 22:25:01,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:25:01,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:25:01,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:25:01,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:01,478 INFO L87 Difference]: Start difference. First operand 3013 states and 3651 transitions. Second operand 3 states. [2020-10-19 22:25:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:01,562 INFO L93 Difference]: Finished difference Result 4871 states and 5828 transitions. [2020-10-19 22:25:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:01,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-19 22:25:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:01,583 INFO L225 Difference]: With dead ends: 4871 [2020-10-19 22:25:01,584 INFO L226 Difference]: Without dead ends: 4869 [2020-10-19 22:25:01,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:01,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-10-19 22:25:01,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4613. [2020-10-19 22:25:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4613 states. [2020-10-19 22:25:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 5443 transitions. [2020-10-19 22:25:01,723 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 5443 transitions. Word has length 22 [2020-10-19 22:25:01,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:01,723 INFO L481 AbstractCegarLoop]: Abstraction has 4613 states and 5443 transitions. [2020-10-19 22:25:01,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 5443 transitions. [2020-10-19 22:25:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:25:01,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:25:01,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:25:01,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 22:25:01,730 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:25:01,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:25:01,731 INFO L82 PathProgramCache]: Analyzing trace with hash -463614640, now seen corresponding path program 1 times [2020-10-19 22:25:01,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:25:01,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557965988] [2020-10-19 22:25:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:25:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:25:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:25:01,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557965988] [2020-10-19 22:25:01,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:25:01,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:25:01,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464383925] [2020-10-19 22:25:01,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:25:01,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:25:01,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:25:01,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:25:01,751 INFO L87 Difference]: Start difference. First operand 4613 states and 5443 transitions. Second operand 3 states. [2020-10-19 22:25:01,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:25:01,871 INFO L93 Difference]: Finished difference Result 10245 states and 11843 transitions. [2020-10-19 22:25:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:25:01,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-19 22:25:01,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:25:01,872 INFO L225 Difference]: With dead ends: 10245 [2020-10-19 22:25:01,872 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 22:25:01,880 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 [2020-10-19 22:25:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 22:25:01,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 22:25:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 22:25:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 22:25:01,881 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-19 22:25:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:25:01,881 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 22:25:01,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:25:01,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 22:25:01,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 22:25:01,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 22:25:01,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 22:25:01,901 INFO L274 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-10-19 22:25:01,901 INFO L274 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-10-19 22:25:01,901 INFO L274 CegarLoopResult]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,901 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-19 22:25:01,901 INFO L277 CegarLoopResult]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2020-10-19 22:25:01,902 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 22:25:01,902 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 22:25:01,902 INFO L274 CegarLoopResult]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,902 INFO L274 CegarLoopResult]: For program point L78-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,902 INFO L277 CegarLoopResult]: At program point L136(lines 6 137) the Hoare annotation is: true [2020-10-19 22:25:01,902 INFO L274 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-10-19 22:25:01,902 INFO L274 CegarLoopResult]: For program point L37(lines 37 39) no Hoare annotation was computed. [2020-10-19 22:25:01,902 INFO L274 CegarLoopResult]: For program point L70-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,902 INFO L274 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-10-19 22:25:01,904 INFO L270 CegarLoopResult]: At program point L128-1(lines 7 137) the Hoare annotation is: false [2020-10-19 22:25:01,904 INFO L274 CegarLoopResult]: For program point L62-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,904 INFO L274 CegarLoopResult]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,904 INFO L274 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-10-19 22:25:01,904 INFO L274 CegarLoopResult]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,905 INFO L274 CegarLoopResult]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,905 INFO L274 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-10-19 22:25:01,905 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 22:25:01,905 INFO L274 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-10-19 22:25:01,905 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-19 22:25:01,905 INFO L274 CegarLoopResult]: For program point L82-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,905 INFO L274 CegarLoopResult]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,905 INFO L274 CegarLoopResult]: For program point L74-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,906 INFO L274 CegarLoopResult]: For program point L66-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,906 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 22:25:01,906 INFO L274 CegarLoopResult]: For program point L58(lines 58 60) no Hoare annotation was computed. [2020-10-19 22:25:01,906 INFO L274 CegarLoopResult]: For program point L58-2(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,907 INFO L274 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-10-19 22:25:01,907 INFO L277 CegarLoopResult]: At program point L133(lines 7 137) the Hoare annotation is: true [2020-10-19 22:25:01,907 INFO L274 CegarLoopResult]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,907 INFO L274 CegarLoopResult]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2020-10-19 22:25:01,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:25:01 BoogieIcfgContainer [2020-10-19 22:25:01,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:25:01,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:25:01,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:25:01,924 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:25:01,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:58" (3/4) ... [2020-10-19 22:25:01,930 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 22:25:01,961 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-19 22:25:01,966 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-19 22:25:01,967 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:25:01,967 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:25:02,054 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:25:02,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:25:02,057 INFO L168 Benchmark]: Toolchain (without parser) took 4488.98 ms. Allocated memory was 42.5 MB in the beginning and 89.1 MB in the end (delta: 46.7 MB). Free memory was 22.9 MB in the beginning and 39.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 30.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:25:02,058 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 32.0 MB. Free memory was 9.8 MB in the beginning and 9.7 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:25:02,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.10 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 22.0 MB in the beginning and 23.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:25:02,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.63 ms. Allocated memory is still 43.0 MB. Free memory was 23.9 MB in the beginning and 22.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:25:02,059 INFO L168 Benchmark]: Boogie Preprocessor took 27.63 ms. Allocated memory is still 43.0 MB. Free memory was 22.0 MB in the beginning and 20.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:25:02,060 INFO L168 Benchmark]: RCFGBuilder took 385.80 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 20.5 MB in the beginning and 19.9 MB in the end (delta: 638.2 kB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:25:02,060 INFO L168 Benchmark]: TraceAbstraction took 3530.90 ms. Allocated memory was 45.1 MB in the beginning and 89.1 MB in the end (delta: 44.0 MB). Free memory was 19.4 MB in the beginning and 43.6 MB in the end (delta: -24.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:25:02,061 INFO L168 Benchmark]: Witness Printer took 130.87 ms. Allocated memory is still 89.1 MB. Free memory was 43.6 MB in the beginning and 39.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:25:02,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 32.0 MB. Free memory was 9.8 MB in the beginning and 9.7 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 360.10 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 22.0 MB in the beginning and 23.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 42.63 ms. Allocated memory is still 43.0 MB. Free memory was 23.9 MB in the beginning and 22.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.63 ms. Allocated memory is still 43.0 MB. Free memory was 22.0 MB in the beginning and 20.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 385.80 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 20.5 MB in the beginning and 19.9 MB in the end (delta: 638.2 kB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3530.90 ms. Allocated memory was 45.1 MB in the beginning and 89.1 MB in the end (delta: 44.0 MB). Free memory was 19.4 MB in the beginning and 43.6 MB in the end (delta: -24.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 14.3 GB. * Witness Printer took 130.87 ms. Allocated memory is still 89.1 MB. Free memory was 43.6 MB in the beginning and 39.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1474 SDtfs, 720 SDslu, 964 SDs, 0 SdLazy, 117 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4613occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 22 MinimizatonAttempts, 1044 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 265 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 14367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...