./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_11.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_11.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 a93221bc263791497331acd2a7a0150037c621aa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 22:24:34,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:24:34,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:24:34,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:24:34,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:24:34,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:24:34,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:24:34,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:24:34,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:24:34,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:24:34,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:24:34,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:24:34,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:24:34,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:24:34,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:24:34,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:24:34,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:24:34,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:24:34,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:24:34,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:24:34,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:24:35,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:24:35,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:24:35,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:24:35,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:24:35,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:24:35,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:24:35,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:24:35,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:24:35,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:24:35,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:24:35,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:24:35,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:24:35,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:24:35,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:24:35,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:24:35,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:24:35,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:24:35,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:24:35,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:24:35,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:24:35,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:24:35,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:24:35,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:24:35,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:24:35,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:24:35,073 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:24:35,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:24:35,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:24:35,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:24:35,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:24:35,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:24:35,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:24:35,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:24:35,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:24:35,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:24:35,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:24:35,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:24:35,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:24:35,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:24:35,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:24:35,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:24:35,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:24:35,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:24:35,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:24:35,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:24:35,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:24:35,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:24:35,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:24:35,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:24:35,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:24:35,081 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 -> a93221bc263791497331acd2a7a0150037c621aa [2020-10-19 22:24:35,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:24:35,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:24:35,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:24:35,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:24:35,301 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:24:35,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_11.c [2020-10-19 22:24:35,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38f8969c3/83103915aeec4211a7a91edda64ef4dd/FLAG0222a5f9a [2020-10-19 22:24:35,879 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:24:35,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_11.c [2020-10-19 22:24:35,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38f8969c3/83103915aeec4211a7a91edda64ef4dd/FLAG0222a5f9a [2020-10-19 22:24:36,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38f8969c3/83103915aeec4211a7a91edda64ef4dd [2020-10-19 22:24:36,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:24:36,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:24:36,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:24:36,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:24:36,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:24:36,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e08bd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36, skipping insertion in model container [2020-10-19 22:24:36,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:24:36,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:24:36,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:24:36,562 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:24:36,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:24:36,608 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:24:36,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36 WrapperNode [2020-10-19 22:24:36,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:24:36,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:24:36,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:24:36,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:24:36,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:24:36,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:24:36,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:24:36,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:24:36,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (1/1) ... [2020-10-19 22:24:36,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:24:36,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:24:36,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:24:36,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:24:36,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (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 22:24:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:24:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:24:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:24:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:24:37,072 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:24:37,073 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-19 22:24:37,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:37 BoogieIcfgContainer [2020-10-19 22:24:37,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:24:37,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:24:37,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:24:37,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:24:37,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:24:36" (1/3) ... [2020-10-19 22:24:37,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9d6cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:24:37, skipping insertion in model container [2020-10-19 22:24:37,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:36" (2/3) ... [2020-10-19 22:24:37,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9d6cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:24:37, skipping insertion in model container [2020-10-19 22:24:37,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:37" (3/3) ... [2020-10-19 22:24:37,088 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-10-19 22:24:37,109 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:24:37,124 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:24:37,149 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:24:37,191 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:24:37,192 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:24:37,192 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:24:37,192 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:24:37,192 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:24:37,193 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:24:37,193 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:24:37,193 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:24:37,213 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-19 22:24:37,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:24:37,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:37,222 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 22:24:37,222 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:37,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:37,227 INFO L82 PathProgramCache]: Analyzing trace with hash 458919617, now seen corresponding path program 1 times [2020-10-19 22:24:37,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:37,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073918831] [2020-10-19 22:24:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:37,451 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 22:24:37,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073918831] [2020-10-19 22:24:37,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:37,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:37,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710955798] [2020-10-19 22:24:37,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:37,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:37,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:37,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:37,475 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-19 22:24:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:37,540 INFO L93 Difference]: Finished difference Result 90 states and 158 transitions. [2020-10-19 22:24:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:37,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-19 22:24:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:37,555 INFO L225 Difference]: With dead ends: 90 [2020-10-19 22:24:37,555 INFO L226 Difference]: Without dead ends: 75 [2020-10-19 22:24:37,559 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 22:24:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-19 22:24:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 51. [2020-10-19 22:24:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-19 22:24:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 94 transitions. [2020-10-19 22:24:37,613 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 94 transitions. Word has length 18 [2020-10-19 22:24:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:37,614 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 94 transitions. [2020-10-19 22:24:37,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:37,616 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 94 transitions. [2020-10-19 22:24:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:24:37,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:37,617 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 22:24:37,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:24:37,619 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:37,619 INFO L82 PathProgramCache]: Analyzing trace with hash -552197633, now seen corresponding path program 1 times [2020-10-19 22:24:37,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:37,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714592317] [2020-10-19 22:24:37,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:37,694 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 22:24:37,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714592317] [2020-10-19 22:24:37,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:37,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:37,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616928560] [2020-10-19 22:24:37,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:37,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:37,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:37,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:37,698 INFO L87 Difference]: Start difference. First operand 51 states and 94 transitions. Second operand 3 states. [2020-10-19 22:24:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:37,725 INFO L93 Difference]: Finished difference Result 124 states and 229 transitions. [2020-10-19 22:24:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:37,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-19 22:24:37,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:37,727 INFO L225 Difference]: With dead ends: 124 [2020-10-19 22:24:37,728 INFO L226 Difference]: Without dead ends: 75 [2020-10-19 22:24:37,729 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 22:24:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-19 22:24:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-19 22:24:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-19 22:24:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 134 transitions. [2020-10-19 22:24:37,740 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 134 transitions. Word has length 18 [2020-10-19 22:24:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:37,741 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 134 transitions. [2020-10-19 22:24:37,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 134 transitions. [2020-10-19 22:24:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 22:24:37,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:37,742 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 22:24:37,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:24:37,743 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:37,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1341819263, now seen corresponding path program 1 times [2020-10-19 22:24:37,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:37,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951497859] [2020-10-19 22:24:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:37,824 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 22:24:37,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951497859] [2020-10-19 22:24:37,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:37,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:37,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086263833] [2020-10-19 22:24:37,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:37,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:37,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:37,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:37,828 INFO L87 Difference]: Start difference. First operand 73 states and 134 transitions. Second operand 3 states. [2020-10-19 22:24:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:37,879 INFO L93 Difference]: Finished difference Result 114 states and 204 transitions. [2020-10-19 22:24:37,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:37,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-19 22:24:37,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:37,882 INFO L225 Difference]: With dead ends: 114 [2020-10-19 22:24:37,882 INFO L226 Difference]: Without dead ends: 78 [2020-10-19 22:24:37,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-19 22:24:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-19 22:24:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-19 22:24:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 136 transitions. [2020-10-19 22:24:37,893 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 136 transitions. Word has length 19 [2020-10-19 22:24:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:37,893 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 136 transitions. [2020-10-19 22:24:37,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 136 transitions. [2020-10-19 22:24:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 22:24:37,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:37,895 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 22:24:37,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:24:37,895 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:37,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:37,896 INFO L82 PathProgramCache]: Analyzing trace with hash 61955585, now seen corresponding path program 1 times [2020-10-19 22:24:37,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:37,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408398389] [2020-10-19 22:24:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:37,941 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 22:24:37,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408398389] [2020-10-19 22:24:37,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:37,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:37,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680098377] [2020-10-19 22:24:37,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:37,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:37,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:37,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:37,944 INFO L87 Difference]: Start difference. First operand 76 states and 136 transitions. Second operand 3 states. [2020-10-19 22:24:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:37,968 INFO L93 Difference]: Finished difference Result 145 states and 261 transitions. [2020-10-19 22:24:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:37,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-19 22:24:37,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:37,971 INFO L225 Difference]: With dead ends: 145 [2020-10-19 22:24:37,971 INFO L226 Difference]: Without dead ends: 143 [2020-10-19 22:24:37,972 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 22:24:37,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-19 22:24:37,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 101. [2020-10-19 22:24:37,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-19 22:24:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 181 transitions. [2020-10-19 22:24:37,983 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 181 transitions. Word has length 19 [2020-10-19 22:24:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:37,984 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 181 transitions. [2020-10-19 22:24:37,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 181 transitions. [2020-10-19 22:24:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 22:24:37,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:37,986 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 22:24:37,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:24:37,986 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:37,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:37,987 INFO L82 PathProgramCache]: Analyzing trace with hash -949161665, now seen corresponding path program 1 times [2020-10-19 22:24:37,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:37,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158740517] [2020-10-19 22:24:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:38,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158740517] [2020-10-19 22:24:38,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:38,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:38,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074140274] [2020-10-19 22:24:38,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:38,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:38,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:38,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,033 INFO L87 Difference]: Start difference. First operand 101 states and 181 transitions. Second operand 3 states. [2020-10-19 22:24:38,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:38,051 INFO L93 Difference]: Finished difference Result 241 states and 435 transitions. [2020-10-19 22:24:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:38,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-19 22:24:38,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:38,062 INFO L225 Difference]: With dead ends: 241 [2020-10-19 22:24:38,063 INFO L226 Difference]: Without dead ends: 145 [2020-10-19 22:24:38,064 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 22:24:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-19 22:24:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-10-19 22:24:38,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-19 22:24:38,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 255 transitions. [2020-10-19 22:24:38,077 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 255 transitions. Word has length 19 [2020-10-19 22:24:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:38,077 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 255 transitions. [2020-10-19 22:24:38,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 255 transitions. [2020-10-19 22:24:38,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 22:24:38,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:38,079 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 22:24:38,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:24:38,080 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:38,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:38,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1920836500, now seen corresponding path program 1 times [2020-10-19 22:24:38,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:38,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481808012] [2020-10-19 22:24:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:38,130 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 22:24:38,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481808012] [2020-10-19 22:24:38,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:38,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:38,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386107847] [2020-10-19 22:24:38,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:38,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:38,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:38,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,134 INFO L87 Difference]: Start difference. First operand 143 states and 255 transitions. Second operand 3 states. [2020-10-19 22:24:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:38,160 INFO L93 Difference]: Finished difference Result 216 states and 382 transitions. [2020-10-19 22:24:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:38,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-19 22:24:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:38,162 INFO L225 Difference]: With dead ends: 216 [2020-10-19 22:24:38,162 INFO L226 Difference]: Without dead ends: 147 [2020-10-19 22:24:38,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-19 22:24:38,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2020-10-19 22:24:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-19 22:24:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 255 transitions. [2020-10-19 22:24:38,177 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 255 transitions. Word has length 20 [2020-10-19 22:24:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:38,177 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 255 transitions. [2020-10-19 22:24:38,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 255 transitions. [2020-10-19 22:24:38,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 22:24:38,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:38,179 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 22:24:38,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:24:38,180 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:38,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:38,180 INFO L82 PathProgramCache]: Analyzing trace with hash 640972822, now seen corresponding path program 1 times [2020-10-19 22:24:38,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:38,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463141114] [2020-10-19 22:24:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:38,215 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 22:24:38,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463141114] [2020-10-19 22:24:38,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:38,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:38,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436749117] [2020-10-19 22:24:38,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:38,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:38,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:38,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,218 INFO L87 Difference]: Start difference. First operand 145 states and 255 transitions. Second operand 3 states. [2020-10-19 22:24:38,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:38,257 INFO L93 Difference]: Finished difference Result 417 states and 737 transitions. [2020-10-19 22:24:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:38,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-19 22:24:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:38,261 INFO L225 Difference]: With dead ends: 417 [2020-10-19 22:24:38,261 INFO L226 Difference]: Without dead ends: 279 [2020-10-19 22:24:38,262 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 22:24:38,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-19 22:24:38,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2020-10-19 22:24:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-19 22:24:38,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 483 transitions. [2020-10-19 22:24:38,288 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 483 transitions. Word has length 20 [2020-10-19 22:24:38,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:38,288 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 483 transitions. [2020-10-19 22:24:38,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:38,288 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 483 transitions. [2020-10-19 22:24:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 22:24:38,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:38,290 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 22:24:38,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:24:38,290 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:38,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:38,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1652090072, now seen corresponding path program 1 times [2020-10-19 22:24:38,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:38,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543855861] [2020-10-19 22:24:38,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:38,322 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 22:24:38,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543855861] [2020-10-19 22:24:38,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:38,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:38,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069062853] [2020-10-19 22:24:38,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:38,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:38,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:38,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,324 INFO L87 Difference]: Start difference. First operand 277 states and 483 transitions. Second operand 3 states. [2020-10-19 22:24:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:38,341 INFO L93 Difference]: Finished difference Result 353 states and 621 transitions. [2020-10-19 22:24:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:38,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-19 22:24:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:38,344 INFO L225 Difference]: With dead ends: 353 [2020-10-19 22:24:38,344 INFO L226 Difference]: Without dead ends: 351 [2020-10-19 22:24:38,344 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 22:24:38,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-19 22:24:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 277. [2020-10-19 22:24:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-19 22:24:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 479 transitions. [2020-10-19 22:24:38,356 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 479 transitions. Word has length 20 [2020-10-19 22:24:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:38,356 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 479 transitions. [2020-10-19 22:24:38,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 479 transitions. [2020-10-19 22:24:38,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 22:24:38,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:38,358 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 22:24:38,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:24:38,359 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:38,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1604465292, now seen corresponding path program 1 times [2020-10-19 22:24:38,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:38,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148587642] [2020-10-19 22:24:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:38,402 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 22:24:38,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148587642] [2020-10-19 22:24:38,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:38,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:38,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55812255] [2020-10-19 22:24:38,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:38,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:38,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:38,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,404 INFO L87 Difference]: Start difference. First operand 277 states and 479 transitions. Second operand 3 states. [2020-10-19 22:24:38,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:38,441 INFO L93 Difference]: Finished difference Result 517 states and 905 transitions. [2020-10-19 22:24:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:38,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-19 22:24:38,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:38,445 INFO L225 Difference]: With dead ends: 517 [2020-10-19 22:24:38,445 INFO L226 Difference]: Without dead ends: 515 [2020-10-19 22:24:38,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-19 22:24:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 385. [2020-10-19 22:24:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-19 22:24:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 655 transitions. [2020-10-19 22:24:38,461 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 655 transitions. Word has length 21 [2020-10-19 22:24:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:38,462 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 655 transitions. [2020-10-19 22:24:38,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 655 transitions. [2020-10-19 22:24:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 22:24:38,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:38,464 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 22:24:38,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:24:38,464 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:38,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1679384754, now seen corresponding path program 1 times [2020-10-19 22:24:38,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:38,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686356437] [2020-10-19 22:24:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:38,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686356437] [2020-10-19 22:24:38,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:38,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:38,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449037019] [2020-10-19 22:24:38,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:38,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:38,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:38,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,497 INFO L87 Difference]: Start difference. First operand 385 states and 655 transitions. Second operand 3 states. [2020-10-19 22:24:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:38,520 INFO L93 Difference]: Finished difference Result 917 states and 1569 transitions. [2020-10-19 22:24:38,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:38,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-19 22:24:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:38,524 INFO L225 Difference]: With dead ends: 917 [2020-10-19 22:24:38,524 INFO L226 Difference]: Without dead ends: 539 [2020-10-19 22:24:38,525 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 22:24:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-10-19 22:24:38,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2020-10-19 22:24:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-19 22:24:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 907 transitions. [2020-10-19 22:24:38,542 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 907 transitions. Word has length 21 [2020-10-19 22:24:38,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:38,542 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 907 transitions. [2020-10-19 22:24:38,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:38,553 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 907 transitions. [2020-10-19 22:24:38,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:24:38,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:38,554 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 22:24:38,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:24:38,555 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:38,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:38,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1801397547, now seen corresponding path program 1 times [2020-10-19 22:24:38,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:38,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498525065] [2020-10-19 22:24:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:38,579 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 22:24:38,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498525065] [2020-10-19 22:24:38,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:38,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:38,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136753049] [2020-10-19 22:24:38,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:38,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:38,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:38,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,582 INFO L87 Difference]: Start difference. First operand 537 states and 907 transitions. Second operand 3 states. [2020-10-19 22:24:38,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:38,603 INFO L93 Difference]: Finished difference Result 813 states and 1369 transitions. [2020-10-19 22:24:38,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:38,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-19 22:24:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:38,607 INFO L225 Difference]: With dead ends: 813 [2020-10-19 22:24:38,607 INFO L226 Difference]: Without dead ends: 551 [2020-10-19 22:24:38,608 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 22:24:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-10-19 22:24:38,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2020-10-19 22:24:38,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-19 22:24:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 915 transitions. [2020-10-19 22:24:38,624 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 915 transitions. Word has length 22 [2020-10-19 22:24:38,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:38,624 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 915 transitions. [2020-10-19 22:24:38,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:38,625 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 915 transitions. [2020-10-19 22:24:38,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:24:38,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:38,626 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 22:24:38,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:24:38,627 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:38,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:38,627 INFO L82 PathProgramCache]: Analyzing trace with hash 521533869, now seen corresponding path program 1 times [2020-10-19 22:24:38,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:38,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111847411] [2020-10-19 22:24:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:38,652 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 22:24:38,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111847411] [2020-10-19 22:24:38,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:38,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:38,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352926218] [2020-10-19 22:24:38,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:38,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:38,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:38,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,654 INFO L87 Difference]: Start difference. First operand 549 states and 915 transitions. Second operand 3 states. [2020-10-19 22:24:38,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:38,688 INFO L93 Difference]: Finished difference Result 1001 states and 1693 transitions. [2020-10-19 22:24:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:38,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-19 22:24:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:38,694 INFO L225 Difference]: With dead ends: 1001 [2020-10-19 22:24:38,694 INFO L226 Difference]: Without dead ends: 999 [2020-10-19 22:24:38,695 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 22:24:38,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-10-19 22:24:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 773. [2020-10-19 22:24:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-10-19 22:24:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1259 transitions. [2020-10-19 22:24:38,718 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1259 transitions. Word has length 22 [2020-10-19 22:24:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:38,719 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1259 transitions. [2020-10-19 22:24:38,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1259 transitions. [2020-10-19 22:24:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:24:38,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:38,721 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 22:24:38,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:24:38,721 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:38,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:38,722 INFO L82 PathProgramCache]: Analyzing trace with hash -489583381, now seen corresponding path program 1 times [2020-10-19 22:24:38,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:38,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588046480] [2020-10-19 22:24:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:38,750 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 22:24:38,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588046480] [2020-10-19 22:24:38,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:38,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:38,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536714701] [2020-10-19 22:24:38,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:38,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:38,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:38,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,754 INFO L87 Difference]: Start difference. First operand 773 states and 1259 transitions. Second operand 3 states. [2020-10-19 22:24:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:38,796 INFO L93 Difference]: Finished difference Result 1817 states and 2973 transitions. [2020-10-19 22:24:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:38,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-19 22:24:38,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:38,808 INFO L225 Difference]: With dead ends: 1817 [2020-10-19 22:24:38,808 INFO L226 Difference]: Without dead ends: 1063 [2020-10-19 22:24:38,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-10-19 22:24:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2020-10-19 22:24:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-10-19 22:24:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1715 transitions. [2020-10-19 22:24:38,857 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1715 transitions. Word has length 22 [2020-10-19 22:24:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:38,858 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1715 transitions. [2020-10-19 22:24:38,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1715 transitions. [2020-10-19 22:24:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:24:38,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:38,864 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, 1] [2020-10-19 22:24:38,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:24:38,864 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:38,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:38,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1012104857, now seen corresponding path program 1 times [2020-10-19 22:24:38,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:38,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877822192] [2020-10-19 22:24:38,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:38,904 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 22:24:38,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877822192] [2020-10-19 22:24:38,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:38,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:38,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095254690] [2020-10-19 22:24:38,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:38,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:38,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:38,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:38,908 INFO L87 Difference]: Start difference. First operand 1061 states and 1715 transitions. Second operand 3 states. [2020-10-19 22:24:38,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:38,937 INFO L93 Difference]: Finished difference Result 1593 states and 2565 transitions. [2020-10-19 22:24:38,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:38,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-19 22:24:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:38,944 INFO L225 Difference]: With dead ends: 1593 [2020-10-19 22:24:38,944 INFO L226 Difference]: Without dead ends: 1079 [2020-10-19 22:24:38,946 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 22:24:38,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-10-19 22:24:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2020-10-19 22:24:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-10-19 22:24:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1715 transitions. [2020-10-19 22:24:38,988 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1715 transitions. Word has length 23 [2020-10-19 22:24:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:38,990 INFO L481 AbstractCegarLoop]: Abstraction has 1077 states and 1715 transitions. [2020-10-19 22:24:38,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:38,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1715 transitions. [2020-10-19 22:24:38,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:24:38,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:38,992 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, 1] [2020-10-19 22:24:38,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:24:38,993 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:38,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:38,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2002998761, now seen corresponding path program 1 times [2020-10-19 22:24:38,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:38,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812720714] [2020-10-19 22:24:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:39,019 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 22:24:39,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812720714] [2020-10-19 22:24:39,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:39,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:39,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537404337] [2020-10-19 22:24:39,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:39,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:39,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:39,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:39,022 INFO L87 Difference]: Start difference. First operand 1077 states and 1715 transitions. Second operand 3 states. [2020-10-19 22:24:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:39,056 INFO L93 Difference]: Finished difference Result 1929 states and 3125 transitions. [2020-10-19 22:24:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:39,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-19 22:24:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:39,066 INFO L225 Difference]: With dead ends: 1929 [2020-10-19 22:24:39,067 INFO L226 Difference]: Without dead ends: 1927 [2020-10-19 22:24:39,069 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 22:24:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-10-19 22:24:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1541. [2020-10-19 22:24:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-10-19 22:24:39,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2387 transitions. [2020-10-19 22:24:39,123 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2387 transitions. Word has length 23 [2020-10-19 22:24:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:39,123 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2387 transitions. [2020-10-19 22:24:39,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:39,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2387 transitions. [2020-10-19 22:24:39,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 22:24:39,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:39,126 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, 1] [2020-10-19 22:24:39,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:24:39,126 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:39,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:39,126 INFO L82 PathProgramCache]: Analyzing trace with hash 991881511, now seen corresponding path program 1 times [2020-10-19 22:24:39,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:39,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317926574] [2020-10-19 22:24:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:39,159 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 22:24:39,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317926574] [2020-10-19 22:24:39,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:39,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:39,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5296412] [2020-10-19 22:24:39,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:39,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:39,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:39,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:39,161 INFO L87 Difference]: Start difference. First operand 1541 states and 2387 transitions. Second operand 3 states. [2020-10-19 22:24:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:39,228 INFO L93 Difference]: Finished difference Result 3593 states and 5589 transitions. [2020-10-19 22:24:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:39,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-19 22:24:39,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:39,241 INFO L225 Difference]: With dead ends: 3593 [2020-10-19 22:24:39,241 INFO L226 Difference]: Without dead ends: 2087 [2020-10-19 22:24:39,244 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 22:24:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-10-19 22:24:39,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2085. [2020-10-19 22:24:39,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-19 22:24:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3203 transitions. [2020-10-19 22:24:39,339 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3203 transitions. Word has length 23 [2020-10-19 22:24:39,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:39,340 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 3203 transitions. [2020-10-19 22:24:39,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3203 transitions. [2020-10-19 22:24:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:24:39,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:39,344 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, 1, 1] [2020-10-19 22:24:39,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 22:24:39,344 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:39,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:39,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1963634176, now seen corresponding path program 1 times [2020-10-19 22:24:39,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:39,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586537849] [2020-10-19 22:24:39,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:39,381 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 22:24:39,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586537849] [2020-10-19 22:24:39,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:39,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:39,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556240231] [2020-10-19 22:24:39,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:39,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:39,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:39,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:39,384 INFO L87 Difference]: Start difference. First operand 2085 states and 3203 transitions. Second operand 3 states. [2020-10-19 22:24:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:39,443 INFO L93 Difference]: Finished difference Result 3129 states and 4789 transitions. [2020-10-19 22:24:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:39,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-19 22:24:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:39,454 INFO L225 Difference]: With dead ends: 3129 [2020-10-19 22:24:39,454 INFO L226 Difference]: Without dead ends: 2119 [2020-10-19 22:24:39,456 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 22:24:39,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2020-10-19 22:24:39,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 2117. [2020-10-19 22:24:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-19 22:24:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3203 transitions. [2020-10-19 22:24:39,508 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3203 transitions. Word has length 24 [2020-10-19 22:24:39,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:39,508 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 3203 transitions. [2020-10-19 22:24:39,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3203 transitions. [2020-10-19 22:24:39,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:24:39,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:39,512 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, 1, 1] [2020-10-19 22:24:39,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 22:24:39,512 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:39,513 INFO L82 PathProgramCache]: Analyzing trace with hash 683770498, now seen corresponding path program 1 times [2020-10-19 22:24:39,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:39,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600442090] [2020-10-19 22:24:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:39,548 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 22:24:39,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600442090] [2020-10-19 22:24:39,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:39,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:39,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534120358] [2020-10-19 22:24:39,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:39,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:39,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:39,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:39,550 INFO L87 Difference]: Start difference. First operand 2117 states and 3203 transitions. Second operand 3 states. [2020-10-19 22:24:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:39,617 INFO L93 Difference]: Finished difference Result 3721 states and 5733 transitions. [2020-10-19 22:24:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:39,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-19 22:24:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:39,637 INFO L225 Difference]: With dead ends: 3721 [2020-10-19 22:24:39,638 INFO L226 Difference]: Without dead ends: 3719 [2020-10-19 22:24:39,639 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 22:24:39,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-10-19 22:24:39,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3077. [2020-10-19 22:24:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3077 states. [2020-10-19 22:24:39,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4515 transitions. [2020-10-19 22:24:39,767 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4515 transitions. Word has length 24 [2020-10-19 22:24:39,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:39,767 INFO L481 AbstractCegarLoop]: Abstraction has 3077 states and 4515 transitions. [2020-10-19 22:24:39,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:39,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4515 transitions. [2020-10-19 22:24:39,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:24:39,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:39,771 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, 1, 1] [2020-10-19 22:24:39,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 22:24:39,772 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:39,772 INFO L82 PathProgramCache]: Analyzing trace with hash -327346752, now seen corresponding path program 1 times [2020-10-19 22:24:39,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:39,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257590352] [2020-10-19 22:24:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:39,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257590352] [2020-10-19 22:24:39,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:39,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:39,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117736904] [2020-10-19 22:24:39,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:39,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:39,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:39,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:39,795 INFO L87 Difference]: Start difference. First operand 3077 states and 4515 transitions. Second operand 3 states. [2020-10-19 22:24:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:39,875 INFO L93 Difference]: Finished difference Result 7113 states and 10469 transitions. [2020-10-19 22:24:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:39,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-19 22:24:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:39,895 INFO L225 Difference]: With dead ends: 7113 [2020-10-19 22:24:39,895 INFO L226 Difference]: Without dead ends: 4103 [2020-10-19 22:24:39,899 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 22:24:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2020-10-19 22:24:40,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4101. [2020-10-19 22:24:40,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4101 states. [2020-10-19 22:24:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5955 transitions. [2020-10-19 22:24:40,034 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5955 transitions. Word has length 24 [2020-10-19 22:24:40,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:40,034 INFO L481 AbstractCegarLoop]: Abstraction has 4101 states and 5955 transitions. [2020-10-19 22:24:40,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5955 transitions. [2020-10-19 22:24:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 22:24:40,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:40,061 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, 1, 1, 1] [2020-10-19 22:24:40,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 22:24:40,062 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:40,062 INFO L82 PathProgramCache]: Analyzing trace with hash -277735972, now seen corresponding path program 1 times [2020-10-19 22:24:40,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:40,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750030323] [2020-10-19 22:24:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:40,080 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 22:24:40,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750030323] [2020-10-19 22:24:40,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:40,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:40,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48404375] [2020-10-19 22:24:40,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:40,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:40,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:40,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:40,082 INFO L87 Difference]: Start difference. First operand 4101 states and 5955 transitions. Second operand 3 states. [2020-10-19 22:24:40,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:40,149 INFO L93 Difference]: Finished difference Result 6153 states and 8901 transitions. [2020-10-19 22:24:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:40,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-19 22:24:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:40,168 INFO L225 Difference]: With dead ends: 6153 [2020-10-19 22:24:40,168 INFO L226 Difference]: Without dead ends: 4167 [2020-10-19 22:24:40,172 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 22:24:40,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2020-10-19 22:24:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 4165. [2020-10-19 22:24:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4165 states. [2020-10-19 22:24:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 5955 transitions. [2020-10-19 22:24:40,298 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 5955 transitions. Word has length 25 [2020-10-19 22:24:40,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:40,298 INFO L481 AbstractCegarLoop]: Abstraction has 4165 states and 5955 transitions. [2020-10-19 22:24:40,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 5955 transitions. [2020-10-19 22:24:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 22:24:40,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:40,303 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, 1, 1, 1] [2020-10-19 22:24:40,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:24:40,303 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:40,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:40,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1557599650, now seen corresponding path program 1 times [2020-10-19 22:24:40,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:40,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420289342] [2020-10-19 22:24:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:40,322 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 22:24:40,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420289342] [2020-10-19 22:24:40,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:40,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:40,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622125519] [2020-10-19 22:24:40,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:40,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:40,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:40,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:40,324 INFO L87 Difference]: Start difference. First operand 4165 states and 5955 transitions. Second operand 3 states. [2020-10-19 22:24:40,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:40,431 INFO L93 Difference]: Finished difference Result 7177 states and 10437 transitions. [2020-10-19 22:24:40,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:40,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-19 22:24:40,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:40,446 INFO L225 Difference]: With dead ends: 7177 [2020-10-19 22:24:40,446 INFO L226 Difference]: Without dead ends: 7175 [2020-10-19 22:24:40,448 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 22:24:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2020-10-19 22:24:40,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 6149. [2020-10-19 22:24:40,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6149 states. [2020-10-19 22:24:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 8515 transitions. [2020-10-19 22:24:40,622 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 8515 transitions. Word has length 25 [2020-10-19 22:24:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:40,622 INFO L481 AbstractCegarLoop]: Abstraction has 6149 states and 8515 transitions. [2020-10-19 22:24:40,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 8515 transitions. [2020-10-19 22:24:40,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 22:24:40,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:40,630 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, 1, 1, 1] [2020-10-19 22:24:40,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 22:24:40,630 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:40,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:40,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1726250396, now seen corresponding path program 1 times [2020-10-19 22:24:40,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:40,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966527874] [2020-10-19 22:24:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:40,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966527874] [2020-10-19 22:24:40,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:40,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:40,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266058824] [2020-10-19 22:24:40,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:40,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:40,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:40,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:40,653 INFO L87 Difference]: Start difference. First operand 6149 states and 8515 transitions. Second operand 3 states. [2020-10-19 22:24:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:40,785 INFO L93 Difference]: Finished difference Result 14089 states and 19525 transitions. [2020-10-19 22:24:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:40,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-19 22:24:40,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:40,808 INFO L225 Difference]: With dead ends: 14089 [2020-10-19 22:24:40,808 INFO L226 Difference]: Without dead ends: 8071 [2020-10-19 22:24:40,817 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 22:24:40,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2020-10-19 22:24:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 8069. [2020-10-19 22:24:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8069 states. [2020-10-19 22:24:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8069 states to 8069 states and 11011 transitions. [2020-10-19 22:24:41,348 INFO L78 Accepts]: Start accepts. Automaton has 8069 states and 11011 transitions. Word has length 25 [2020-10-19 22:24:41,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:41,348 INFO L481 AbstractCegarLoop]: Abstraction has 8069 states and 11011 transitions. [2020-10-19 22:24:41,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 8069 states and 11011 transitions. [2020-10-19 22:24:41,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:24:41,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:41,360 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, 1, 1, 1, 1] [2020-10-19 22:24:41,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 22:24:41,360 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:41,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1040733483, now seen corresponding path program 1 times [2020-10-19 22:24:41,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:41,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777300573] [2020-10-19 22:24:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:41,385 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 22:24:41,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777300573] [2020-10-19 22:24:41,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:41,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:41,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229368986] [2020-10-19 22:24:41,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:41,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:41,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:41,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:41,386 INFO L87 Difference]: Start difference. First operand 8069 states and 11011 transitions. Second operand 3 states. [2020-10-19 22:24:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:41,537 INFO L93 Difference]: Finished difference Result 12105 states and 16453 transitions. [2020-10-19 22:24:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:41,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-19 22:24:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:41,561 INFO L225 Difference]: With dead ends: 12105 [2020-10-19 22:24:41,562 INFO L226 Difference]: Without dead ends: 8199 [2020-10-19 22:24:41,570 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 22:24:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2020-10-19 22:24:42,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 8197. [2020-10-19 22:24:42,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8197 states. [2020-10-19 22:24:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 11011 transitions. [2020-10-19 22:24:42,108 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 11011 transitions. Word has length 26 [2020-10-19 22:24:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:42,109 INFO L481 AbstractCegarLoop]: Abstraction has 8197 states and 11011 transitions. [2020-10-19 22:24:42,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 11011 transitions. [2020-10-19 22:24:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:24:42,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:42,121 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, 1, 1, 1, 1] [2020-10-19 22:24:42,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 22:24:42,122 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:42,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1974370135, now seen corresponding path program 1 times [2020-10-19 22:24:42,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:42,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464767172] [2020-10-19 22:24:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:42,166 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 22:24:42,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464767172] [2020-10-19 22:24:42,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:42,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:42,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850986299] [2020-10-19 22:24:42,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:42,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:42,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:42,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:42,169 INFO L87 Difference]: Start difference. First operand 8197 states and 11011 transitions. Second operand 3 states. [2020-10-19 22:24:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:42,630 INFO L93 Difference]: Finished difference Result 13833 states and 18821 transitions. [2020-10-19 22:24:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:42,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-19 22:24:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:42,653 INFO L225 Difference]: With dead ends: 13833 [2020-10-19 22:24:42,654 INFO L226 Difference]: Without dead ends: 13831 [2020-10-19 22:24:42,657 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 22:24:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2020-10-19 22:24:42,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 12293. [2020-10-19 22:24:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12293 states. [2020-10-19 22:24:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12293 states to 12293 states and 16003 transitions. [2020-10-19 22:24:42,983 INFO L78 Accepts]: Start accepts. Automaton has 12293 states and 16003 transitions. Word has length 26 [2020-10-19 22:24:42,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:42,984 INFO L481 AbstractCegarLoop]: Abstraction has 12293 states and 16003 transitions. [2020-10-19 22:24:42,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand 12293 states and 16003 transitions. [2020-10-19 22:24:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:24:42,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:42,998 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, 1, 1, 1, 1] [2020-10-19 22:24:42,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 22:24:42,999 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:42,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:42,999 INFO L82 PathProgramCache]: Analyzing trace with hash 963252885, now seen corresponding path program 1 times [2020-10-19 22:24:43,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:43,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755929709] [2020-10-19 22:24:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:43,030 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 22:24:43,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755929709] [2020-10-19 22:24:43,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:43,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:43,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278288199] [2020-10-19 22:24:43,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:43,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:43,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:43,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:43,034 INFO L87 Difference]: Start difference. First operand 12293 states and 16003 transitions. Second operand 3 states. [2020-10-19 22:24:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:43,281 INFO L93 Difference]: Finished difference Result 27913 states and 36229 transitions. [2020-10-19 22:24:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:43,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-19 22:24:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:43,310 INFO L225 Difference]: With dead ends: 27913 [2020-10-19 22:24:43,310 INFO L226 Difference]: Without dead ends: 15879 [2020-10-19 22:24:43,325 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 22:24:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15879 states. [2020-10-19 22:24:44,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15879 to 15877. [2020-10-19 22:24:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15877 states. [2020-10-19 22:24:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15877 states to 15877 states and 20227 transitions. [2020-10-19 22:24:44,125 INFO L78 Accepts]: Start accepts. Automaton has 15877 states and 20227 transitions. Word has length 26 [2020-10-19 22:24:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:44,125 INFO L481 AbstractCegarLoop]: Abstraction has 15877 states and 20227 transitions. [2020-10-19 22:24:44,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 15877 states and 20227 transitions. [2020-10-19 22:24:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:24:44,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:44,142 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, 1, 1, 1, 1, 1] [2020-10-19 22:24:44,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 22:24:44,143 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:44,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:44,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1076147793, now seen corresponding path program 1 times [2020-10-19 22:24:44,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:44,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441500984] [2020-10-19 22:24:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:44,168 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 22:24:44,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441500984] [2020-10-19 22:24:44,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:44,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:44,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121682066] [2020-10-19 22:24:44,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:44,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:44,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:44,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:44,170 INFO L87 Difference]: Start difference. First operand 15877 states and 20227 transitions. Second operand 3 states. [2020-10-19 22:24:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:44,410 INFO L93 Difference]: Finished difference Result 23817 states and 30213 transitions. [2020-10-19 22:24:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:44,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:24:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:44,438 INFO L225 Difference]: With dead ends: 23817 [2020-10-19 22:24:44,438 INFO L226 Difference]: Without dead ends: 16135 [2020-10-19 22:24:44,449 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 22:24:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16135 states. [2020-10-19 22:24:45,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16135 to 16133. [2020-10-19 22:24:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16133 states. [2020-10-19 22:24:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 20227 transitions. [2020-10-19 22:24:45,130 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 20227 transitions. Word has length 27 [2020-10-19 22:24:45,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:45,131 INFO L481 AbstractCegarLoop]: Abstraction has 16133 states and 20227 transitions. [2020-10-19 22:24:45,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:45,131 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 20227 transitions. [2020-10-19 22:24:45,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:24:45,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:45,147 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, 1, 1, 1, 1, 1] [2020-10-19 22:24:45,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 22:24:45,148 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:45,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:45,148 INFO L82 PathProgramCache]: Analyzing trace with hash -203715885, now seen corresponding path program 1 times [2020-10-19 22:24:45,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:45,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845796743] [2020-10-19 22:24:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:45,171 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 22:24:45,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845796743] [2020-10-19 22:24:45,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:45,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:45,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087784926] [2020-10-19 22:24:45,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:45,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:45,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:45,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:45,173 INFO L87 Difference]: Start difference. First operand 16133 states and 20227 transitions. Second operand 3 states. [2020-10-19 22:24:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:45,496 INFO L93 Difference]: Finished difference Result 26633 states and 33541 transitions. [2020-10-19 22:24:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:45,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:24:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:45,540 INFO L225 Difference]: With dead ends: 26633 [2020-10-19 22:24:45,540 INFO L226 Difference]: Without dead ends: 26631 [2020-10-19 22:24:45,546 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 22:24:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26631 states. [2020-10-19 22:24:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26631 to 24581. [2020-10-19 22:24:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24581 states. [2020-10-19 22:24:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24581 states to 24581 states and 29955 transitions. [2020-10-19 22:24:46,248 INFO L78 Accepts]: Start accepts. Automaton has 24581 states and 29955 transitions. Word has length 27 [2020-10-19 22:24:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:46,248 INFO L481 AbstractCegarLoop]: Abstraction has 24581 states and 29955 transitions. [2020-10-19 22:24:46,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:46,249 INFO L276 IsEmpty]: Start isEmpty. Operand 24581 states and 29955 transitions. [2020-10-19 22:24:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:24:46,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:46,278 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, 1, 1, 1, 1, 1] [2020-10-19 22:24:46,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 22:24:46,278 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:46,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:46,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1214833135, now seen corresponding path program 1 times [2020-10-19 22:24:46,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:46,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66196575] [2020-10-19 22:24:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:46,377 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 22:24:46,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66196575] [2020-10-19 22:24:46,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:46,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:46,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094099573] [2020-10-19 22:24:46,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:46,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:46,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:46,380 INFO L87 Difference]: Start difference. First operand 24581 states and 29955 transitions. Second operand 3 states. [2020-10-19 22:24:46,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:46,759 INFO L93 Difference]: Finished difference Result 55305 states and 66821 transitions. [2020-10-19 22:24:46,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:46,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:24:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:46,812 INFO L225 Difference]: With dead ends: 55305 [2020-10-19 22:24:46,813 INFO L226 Difference]: Without dead ends: 31239 [2020-10-19 22:24:46,844 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 22:24:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31239 states. [2020-10-19 22:24:48,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31239 to 31237. [2020-10-19 22:24:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31237 states. [2020-10-19 22:24:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31237 states to 31237 states and 36867 transitions. [2020-10-19 22:24:48,104 INFO L78 Accepts]: Start accepts. Automaton has 31237 states and 36867 transitions. Word has length 27 [2020-10-19 22:24:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:48,104 INFO L481 AbstractCegarLoop]: Abstraction has 31237 states and 36867 transitions. [2020-10-19 22:24:48,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 31237 states and 36867 transitions. [2020-10-19 22:24:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 22:24:48,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:48,128 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, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:48,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 22:24:48,129 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:48,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:48,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2020009046, now seen corresponding path program 1 times [2020-10-19 22:24:48,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:48,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688633966] [2020-10-19 22:24:48,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:48,168 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 22:24:48,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688633966] [2020-10-19 22:24:48,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:48,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:48,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583103721] [2020-10-19 22:24:48,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:48,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:48,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:48,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:48,170 INFO L87 Difference]: Start difference. First operand 31237 states and 36867 transitions. Second operand 3 states. [2020-10-19 22:24:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:48,549 INFO L93 Difference]: Finished difference Result 46857 states and 55045 transitions. [2020-10-19 22:24:48,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:48,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-19 22:24:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:48,583 INFO L225 Difference]: With dead ends: 46857 [2020-10-19 22:24:48,583 INFO L226 Difference]: Without dead ends: 31751 [2020-10-19 22:24:48,601 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 22:24:48,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31751 states. [2020-10-19 22:24:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31751 to 31749. [2020-10-19 22:24:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31749 states. [2020-10-19 22:24:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 36867 transitions. [2020-10-19 22:24:49,895 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 36867 transitions. Word has length 28 [2020-10-19 22:24:49,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:49,896 INFO L481 AbstractCegarLoop]: Abstraction has 31749 states and 36867 transitions. [2020-10-19 22:24:49,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 36867 transitions. [2020-10-19 22:24:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 22:24:49,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:49,924 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, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:49,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 22:24:49,925 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:49,926 INFO L82 PathProgramCache]: Analyzing trace with hash 995094572, now seen corresponding path program 1 times [2020-10-19 22:24:49,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:49,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995681727] [2020-10-19 22:24:49,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:49,954 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 22:24:49,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995681727] [2020-10-19 22:24:49,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:49,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:49,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212173144] [2020-10-19 22:24:49,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:49,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:49,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:49,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:49,957 INFO L87 Difference]: Start difference. First operand 31749 states and 36867 transitions. Second operand 3 states. [2020-10-19 22:24:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:52,041 INFO L93 Difference]: Finished difference Result 92167 states and 104452 transitions. [2020-10-19 22:24:52,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:52,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-19 22:24:52,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:52,079 INFO L225 Difference]: With dead ends: 92167 [2020-10-19 22:24:52,079 INFO L226 Difference]: Without dead ends: 31749 [2020-10-19 22:24:52,105 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 22:24:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31749 states. [2020-10-19 22:24:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31749 to 31749. [2020-10-19 22:24:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31749 states. [2020-10-19 22:24:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 34819 transitions. [2020-10-19 22:24:53,256 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 34819 transitions. Word has length 28 [2020-10-19 22:24:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:53,257 INFO L481 AbstractCegarLoop]: Abstraction has 31749 states and 34819 transitions. [2020-10-19 22:24:53,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 34819 transitions. [2020-10-19 22:24:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 22:24:53,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:53,277 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, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:53,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-19 22:24:53,277 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:53,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:53,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2006211822, now seen corresponding path program 1 times [2020-10-19 22:24:53,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:53,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180848132] [2020-10-19 22:24:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:53,297 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 22:24:53,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180848132] [2020-10-19 22:24:53,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:53,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:53,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026823944] [2020-10-19 22:24:53,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:53,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:53,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:53,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:53,299 INFO L87 Difference]: Start difference. First operand 31749 states and 34819 transitions. Second operand 3 states. [2020-10-19 22:24:53,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:53,611 INFO L93 Difference]: Finished difference Result 31749 states and 34819 transitions. [2020-10-19 22:24:53,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:53,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-19 22:24:53,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:53,612 INFO L225 Difference]: With dead ends: 31749 [2020-10-19 22:24:53,612 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 22:24:53,622 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 22:24:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 22:24:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 22:24:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 22:24:53,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 22:24:53,623 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-10-19 22:24:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:53,623 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 22:24:53,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 22:24:53,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 22:24:53,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-19 22:24:53,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 22:24:53,653 INFO L274 CegarLoopResult]: For program point L159-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,653 INFO L274 CegarLoopResult]: For program point L93-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,653 INFO L274 CegarLoopResult]: For program point L85-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,654 INFO L274 CegarLoopResult]: For program point L77-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,654 INFO L274 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-10-19 22:24:53,654 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-19 22:24:53,654 INFO L274 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-10-19 22:24:53,654 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 22:24:53,654 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 22:24:53,654 INFO L274 CegarLoopResult]: For program point L119-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,654 INFO L274 CegarLoopResult]: For program point L144-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,654 INFO L277 CegarLoopResult]: At program point L169-1(lines 44 174) the Hoare annotation is: true [2020-10-19 22:24:53,655 INFO L274 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-10-19 22:24:53,655 INFO L277 CegarLoopResult]: At program point L178(lines 6 179) the Hoare annotation is: true [2020-10-19 22:24:53,655 INFO L274 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-10-19 22:24:53,655 INFO L274 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-10-19 22:24:53,655 INFO L274 CegarLoopResult]: For program point L170(line 170) no Hoare annotation was computed. [2020-10-19 22:24:53,655 INFO L270 CegarLoopResult]: At program point L170-1(lines 7 179) the Hoare annotation is: false [2020-10-19 22:24:53,655 INFO L274 CegarLoopResult]: For program point L129-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,655 INFO L274 CegarLoopResult]: For program point L154-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,655 INFO L274 CegarLoopResult]: For program point L113-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,655 INFO L274 CegarLoopResult]: For program point L105-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,655 INFO L274 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-10-19 22:24:53,656 INFO L274 CegarLoopResult]: For program point L97-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,656 INFO L274 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-10-19 22:24:53,656 INFO L274 CegarLoopResult]: For program point L89-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,656 INFO L274 CegarLoopResult]: For program point L81-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,657 INFO L274 CegarLoopResult]: For program point L139-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,657 INFO L274 CegarLoopResult]: For program point L73(lines 73 75) no Hoare annotation was computed. [2020-10-19 22:24:53,657 INFO L274 CegarLoopResult]: For program point L73-2(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,657 INFO L274 CegarLoopResult]: For program point L164-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,658 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 22:24:53,658 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-19 22:24:53,658 INFO L274 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-10-19 22:24:53,658 INFO L274 CegarLoopResult]: For program point L165(line 165) no Hoare annotation was computed. [2020-10-19 22:24:53,658 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 22:24:53,659 INFO L274 CegarLoopResult]: For program point L124-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,660 INFO L274 CegarLoopResult]: For program point L149-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,660 INFO L274 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-10-19 22:24:53,660 INFO L274 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-10-19 22:24:53,660 INFO L277 CegarLoopResult]: At program point L175(lines 7 179) the Hoare annotation is: true [2020-10-19 22:24:53,660 INFO L274 CegarLoopResult]: For program point L109-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,660 INFO L274 CegarLoopResult]: For program point L134-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,661 INFO L274 CegarLoopResult]: For program point L101-1(lines 44 174) no Hoare annotation was computed. [2020-10-19 22:24:53,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:24:53 BoogieIcfgContainer [2020-10-19 22:24:53,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:24:53,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:24:53,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:24:53,679 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:24:53,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:37" (3/4) ... [2020-10-19 22:24:53,686 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 22:24:53,724 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-19 22:24:53,724 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-19 22:24:53,725 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:24:53,725 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:24:53,819 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:24:53,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:24:53,823 INFO L168 Benchmark]: Toolchain (without parser) took 17511.06 ms. Allocated memory was 40.4 MB in the beginning and 475.0 MB in the end (delta: 434.6 MB). Free memory was 16.4 MB in the beginning and 246.4 MB in the end (delta: -230.0 MB). Peak memory consumption was 204.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:53,823 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 30.4 MB. Free memory was 16.2 MB in the beginning and 16.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:24:53,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.08 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 15.6 MB in the beginning and 13.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:53,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.01 ms. Allocated memory is still 40.9 MB. Free memory was 13.1 MB in the beginning and 11.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:53,825 INFO L168 Benchmark]: Boogie Preprocessor took 27.12 ms. Allocated memory is still 40.9 MB. Free memory was 11.2 MB in the beginning and 9.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:53,825 INFO L168 Benchmark]: RCFGBuilder took 389.53 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 24.8 MB in the beginning and 18.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:53,826 INFO L168 Benchmark]: TraceAbstraction took 16601.28 ms. Allocated memory was 43.0 MB in the beginning and 475.0 MB in the end (delta: 432.0 MB). Free memory was 17.5 MB in the beginning and 250.0 MB in the end (delta: -232.5 MB). Peak memory consumption was 199.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:53,826 INFO L168 Benchmark]: Witness Printer took 141.40 ms. Allocated memory is still 475.0 MB. Free memory was 250.0 MB in the beginning and 246.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:53,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 30.4 MB. Free memory was 16.2 MB in the beginning and 16.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 292.08 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 15.6 MB in the beginning and 13.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 43.01 ms. Allocated memory is still 40.9 MB. Free memory was 13.1 MB in the beginning and 11.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.12 ms. Allocated memory is still 40.9 MB. Free memory was 11.2 MB in the beginning and 9.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 389.53 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 24.8 MB in the beginning and 18.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 16601.28 ms. Allocated memory was 43.0 MB in the beginning and 475.0 MB in the end (delta: 432.0 MB). Free memory was 17.5 MB in the beginning and 250.0 MB in the end (delta: -232.5 MB). Peak memory consumption was 199.5 MB. Max. memory is 14.3 GB. * Witness Printer took 141.40 ms. Allocated memory is still 475.0 MB. Free memory was 250.0 MB in the beginning and 246.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 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: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.4s, OverallIterations: 31, TraceHistogramMax: 1, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2753 SDtfs, 1400 SDslu, 1835 SDs, 0 SdLazy, 163 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31749occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.3s AutomataMinimizationTime, 31 MinimizatonAttempts, 6176 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 2057 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, 0.7s InterpolantComputationTime, 720 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 689 ConstructedInterpolants, 0 QuantifiedInterpolants, 33510 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 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...