/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:47:26,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:47:26,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:47:26,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:47:26,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:47:26,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:47:26,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:47:26,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:47:26,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:47:26,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:47:26,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:47:26,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:47:26,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:47:26,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:47:26,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:47:26,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:47:26,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:47:26,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:47:26,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:47:26,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:47:26,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:47:26,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:47:26,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:47:26,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:47:26,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:47:26,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:47:26,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:47:26,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:47:26,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:47:26,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:47:26,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:47:26,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:47:26,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:47:26,411 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:47:26,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:47:26,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:47:26,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:47:26,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:47:26,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:47:26,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:47:26,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:47:26,415 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:47:26,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:47:26,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:47:26,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:47:26,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:47:26,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:47:26,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:47:26,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:47:26,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:47:26,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:47:26,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:47:26,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:47:26,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:47:26,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:47:26,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:47:27,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:47:27,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:47:27,026 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:47:27,027 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:47:27,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:47:27,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73ac4d24b/06df9b7b555e452f83d051311c8d65e5/FLAGc4465db32 [2020-12-22 08:47:28,034 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:47:28,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:47:28,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73ac4d24b/06df9b7b555e452f83d051311c8d65e5/FLAGc4465db32 [2020-12-22 08:47:28,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73ac4d24b/06df9b7b555e452f83d051311c8d65e5 [2020-12-22 08:47:28,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:47:28,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:47:28,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:47:28,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:47:28,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:47:28,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:28,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37eb7519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28, skipping insertion in model container [2020-12-22 08:47:28,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:28,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:47:28,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:47:28,706 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7432,7445] [2020-12-22 08:47:28,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:47:28,772 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:47:28,861 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7432,7445] [2020-12-22 08:47:28,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:47:28,970 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:47:28,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28 WrapperNode [2020-12-22 08:47:28,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:47:28,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:47:28,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:47:28,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:47:28,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:28,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:29,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:47:29,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:47:29,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:47:29,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:47:29,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:29,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:29,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:29,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:29,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:29,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:29,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (1/1) ... [2020-12-22 08:47:29,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:47:29,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:47:29,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:47:29,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:47:29,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (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 [2020-12-22 08:47:29,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:47:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:47:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:47:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:47:30,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:47:30,301 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:47:30,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:47:30 BoogieIcfgContainer [2020-12-22 08:47:30,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:47:30,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:47:30,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:47:30,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:47:30,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:47:28" (1/3) ... [2020-12-22 08:47:30,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cfadbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:47:30, skipping insertion in model container [2020-12-22 08:47:30,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:47:28" (2/3) ... [2020-12-22 08:47:30,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cfadbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:47:30, skipping insertion in model container [2020-12-22 08:47:30,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:47:30" (3/3) ... [2020-12-22 08:47:30,317 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:47:30,324 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:47:30,330 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:47:30,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:47:30,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:47:30,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:47:30,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:47:30,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:47:30,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:47:30,380 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:47:30,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:47:30,381 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:47:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-12-22 08:47:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:47:30,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:30,413 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:47:30,414 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:30,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1577999170, now seen corresponding path program 1 times [2020-12-22 08:47:30,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:30,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990500954] [2020-12-22 08:47:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:30,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990500954] [2020-12-22 08:47:30,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:30,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:47:30,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763072581] [2020-12-22 08:47:30,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:47:30,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:30,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:47:30,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:47:30,970 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-12-22 08:47:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:31,097 INFO L93 Difference]: Finished difference Result 294 states and 487 transitions. [2020-12-22 08:47:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:47:31,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:47:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:31,115 INFO L225 Difference]: With dead ends: 294 [2020-12-22 08:47:31,115 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 08:47:31,119 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 [2020-12-22 08:47:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 08:47:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2020-12-22 08:47:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-22 08:47:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 322 transitions. [2020-12-22 08:47:31,196 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 322 transitions. Word has length 75 [2020-12-22 08:47:31,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:31,199 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 322 transitions. [2020-12-22 08:47:31,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:47:31,199 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 322 transitions. [2020-12-22 08:47:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:47:31,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:31,202 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:47:31,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:47:31,203 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:31,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:31,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1882204162, now seen corresponding path program 1 times [2020-12-22 08:47:31,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:31,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552727324] [2020-12-22 08:47:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:31,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552727324] [2020-12-22 08:47:31,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:31,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:47:31,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052457570] [2020-12-22 08:47:31,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:47:31,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:31,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:47:31,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:47:31,417 INFO L87 Difference]: Start difference. First operand 222 states and 322 transitions. Second operand 6 states. [2020-12-22 08:47:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:31,759 INFO L93 Difference]: Finished difference Result 558 states and 844 transitions. [2020-12-22 08:47:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:47:31,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 08:47:31,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:31,763 INFO L225 Difference]: With dead ends: 558 [2020-12-22 08:47:31,763 INFO L226 Difference]: Without dead ends: 373 [2020-12-22 08:47:31,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:47:31,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-12-22 08:47:31,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2020-12-22 08:47:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-12-22 08:47:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 556 transitions. [2020-12-22 08:47:31,810 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 556 transitions. Word has length 77 [2020-12-22 08:47:31,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:31,811 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 556 transitions. [2020-12-22 08:47:31,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:47:31,811 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 556 transitions. [2020-12-22 08:47:31,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:47:31,815 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:31,815 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:47:31,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:47:31,816 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:31,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:31,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2128024995, now seen corresponding path program 1 times [2020-12-22 08:47:31,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:31,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954282309] [2020-12-22 08:47:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:32,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954282309] [2020-12-22 08:47:32,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:32,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:47:32,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222173677] [2020-12-22 08:47:32,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:47:32,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:32,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:47:32,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:47:32,044 INFO L87 Difference]: Start difference. First operand 371 states and 556 transitions. Second operand 6 states. [2020-12-22 08:47:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:32,278 INFO L93 Difference]: Finished difference Result 917 states and 1412 transitions. [2020-12-22 08:47:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:47:32,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 08:47:32,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:32,283 INFO L225 Difference]: With dead ends: 917 [2020-12-22 08:47:32,283 INFO L226 Difference]: Without dead ends: 599 [2020-12-22 08:47:32,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:47:32,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-12-22 08:47:32,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-12-22 08:47:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-12-22 08:47:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 907 transitions. [2020-12-22 08:47:32,334 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 907 transitions. Word has length 78 [2020-12-22 08:47:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:32,336 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 907 transitions. [2020-12-22 08:47:32,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:47:32,336 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 907 transitions. [2020-12-22 08:47:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:47:32,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:32,345 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:47:32,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:47:32,346 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:32,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:32,346 INFO L82 PathProgramCache]: Analyzing trace with hash 172704802, now seen corresponding path program 1 times [2020-12-22 08:47:32,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:32,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219563848] [2020-12-22 08:47:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:32,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219563848] [2020-12-22 08:47:32,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:32,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:47:32,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556343735] [2020-12-22 08:47:32,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:47:32,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:32,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:47:32,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:47:32,611 INFO L87 Difference]: Start difference. First operand 597 states and 907 transitions. Second operand 6 states. [2020-12-22 08:47:32,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:32,873 INFO L93 Difference]: Finished difference Result 1615 states and 2495 transitions. [2020-12-22 08:47:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:47:32,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-22 08:47:32,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:32,880 INFO L225 Difference]: With dead ends: 1615 [2020-12-22 08:47:32,881 INFO L226 Difference]: Without dead ends: 1067 [2020-12-22 08:47:32,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:47:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2020-12-22 08:47:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2020-12-22 08:47:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-12-22 08:47:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1630 transitions. [2020-12-22 08:47:32,956 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1630 transitions. Word has length 79 [2020-12-22 08:47:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:32,956 INFO L481 AbstractCegarLoop]: Abstraction has 1065 states and 1630 transitions. [2020-12-22 08:47:32,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:47:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1630 transitions. [2020-12-22 08:47:32,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:47:32,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:32,960 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:47:32,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:47:32,960 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:32,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:32,961 INFO L82 PathProgramCache]: Analyzing trace with hash 237210639, now seen corresponding path program 1 times [2020-12-22 08:47:32,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:32,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775191718] [2020-12-22 08:47:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:33,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775191718] [2020-12-22 08:47:33,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:33,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:47:33,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987374950] [2020-12-22 08:47:33,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:47:33,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:33,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:47:33,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:47:33,074 INFO L87 Difference]: Start difference. First operand 1065 states and 1630 transitions. Second operand 5 states. [2020-12-22 08:47:33,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:33,344 INFO L93 Difference]: Finished difference Result 2085 states and 3213 transitions. [2020-12-22 08:47:33,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:47:33,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-22 08:47:33,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:33,351 INFO L225 Difference]: With dead ends: 2085 [2020-12-22 08:47:33,352 INFO L226 Difference]: Without dead ends: 1065 [2020-12-22 08:47:33,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:47:33,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-12-22 08:47:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2020-12-22 08:47:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-12-22 08:47:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1613 transitions. [2020-12-22 08:47:33,430 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1613 transitions. Word has length 80 [2020-12-22 08:47:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:33,431 INFO L481 AbstractCegarLoop]: Abstraction has 1065 states and 1613 transitions. [2020-12-22 08:47:33,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:47:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1613 transitions. [2020-12-22 08:47:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:47:33,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:33,432 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, 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, 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] [2020-12-22 08:47:33,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:47:33,433 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:33,434 INFO L82 PathProgramCache]: Analyzing trace with hash 2036404942, now seen corresponding path program 1 times [2020-12-22 08:47:33,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:33,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653671822] [2020-12-22 08:47:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:33,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653671822] [2020-12-22 08:47:33,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:33,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:47:33,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790766965] [2020-12-22 08:47:33,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:47:33,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:33,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:47:33,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:47:33,525 INFO L87 Difference]: Start difference. First operand 1065 states and 1613 transitions. Second operand 5 states. [2020-12-22 08:47:33,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:33,802 INFO L93 Difference]: Finished difference Result 2089 states and 3184 transitions. [2020-12-22 08:47:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:47:33,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 08:47:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:33,810 INFO L225 Difference]: With dead ends: 2089 [2020-12-22 08:47:33,810 INFO L226 Difference]: Without dead ends: 1065 [2020-12-22 08:47:33,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:47:33,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-12-22 08:47:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2020-12-22 08:47:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-12-22 08:47:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1596 transitions. [2020-12-22 08:47:33,904 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1596 transitions. Word has length 81 [2020-12-22 08:47:33,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:33,905 INFO L481 AbstractCegarLoop]: Abstraction has 1065 states and 1596 transitions. [2020-12-22 08:47:33,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:47:33,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1596 transitions. [2020-12-22 08:47:33,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:47:33,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:33,909 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, 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, 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] [2020-12-22 08:47:33,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:47:33,909 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:33,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:33,911 INFO L82 PathProgramCache]: Analyzing trace with hash 628219771, now seen corresponding path program 1 times [2020-12-22 08:47:33,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:33,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276185993] [2020-12-22 08:47:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:34,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276185993] [2020-12-22 08:47:34,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:34,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:47:34,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143159399] [2020-12-22 08:47:34,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:47:34,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:34,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:47:34,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:47:34,113 INFO L87 Difference]: Start difference. First operand 1065 states and 1596 transitions. Second operand 7 states. [2020-12-22 08:47:34,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:34,711 INFO L93 Difference]: Finished difference Result 5805 states and 8838 transitions. [2020-12-22 08:47:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:47:34,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:47:34,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:34,737 INFO L225 Difference]: With dead ends: 5805 [2020-12-22 08:47:34,738 INFO L226 Difference]: Without dead ends: 4915 [2020-12-22 08:47:34,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:47:34,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2020-12-22 08:47:34,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 1525. [2020-12-22 08:47:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2020-12-22 08:47:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2304 transitions. [2020-12-22 08:47:34,975 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2304 transitions. Word has length 82 [2020-12-22 08:47:34,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:34,976 INFO L481 AbstractCegarLoop]: Abstraction has 1525 states and 2304 transitions. [2020-12-22 08:47:34,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:47:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2304 transitions. [2020-12-22 08:47:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:47:34,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:34,978 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, 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, 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] [2020-12-22 08:47:34,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:47:34,978 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:34,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:34,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1374029307, now seen corresponding path program 1 times [2020-12-22 08:47:34,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:34,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521192709] [2020-12-22 08:47:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:35,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521192709] [2020-12-22 08:47:35,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:35,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:47:35,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736491321] [2020-12-22 08:47:35,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:47:35,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:35,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:47:35,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:47:35,150 INFO L87 Difference]: Start difference. First operand 1525 states and 2304 transitions. Second operand 7 states. [2020-12-22 08:47:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:35,878 INFO L93 Difference]: Finished difference Result 6205 states and 9452 transitions. [2020-12-22 08:47:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:47:35,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:47:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:35,906 INFO L225 Difference]: With dead ends: 6205 [2020-12-22 08:47:35,906 INFO L226 Difference]: Without dead ends: 5315 [2020-12-22 08:47:35,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:47:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5315 states. [2020-12-22 08:47:36,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5315 to 2497. [2020-12-22 08:47:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2497 states. [2020-12-22 08:47:36,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3796 transitions. [2020-12-22 08:47:36,210 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3796 transitions. Word has length 82 [2020-12-22 08:47:36,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:36,211 INFO L481 AbstractCegarLoop]: Abstraction has 2497 states and 3796 transitions. [2020-12-22 08:47:36,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:47:36,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3796 transitions. [2020-12-22 08:47:36,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:47:36,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:36,213 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, 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, 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] [2020-12-22 08:47:36,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:47:36,213 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:36,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:36,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1344416826, now seen corresponding path program 1 times [2020-12-22 08:47:36,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:36,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584954910] [2020-12-22 08:47:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:36,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584954910] [2020-12-22 08:47:36,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:36,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:47:36,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124792317] [2020-12-22 08:47:36,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:47:36,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:36,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:47:36,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:47:36,309 INFO L87 Difference]: Start difference. First operand 2497 states and 3796 transitions. Second operand 3 states. [2020-12-22 08:47:36,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:36,783 INFO L93 Difference]: Finished difference Result 6149 states and 9406 transitions. [2020-12-22 08:47:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:47:36,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 08:47:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:36,803 INFO L225 Difference]: With dead ends: 6149 [2020-12-22 08:47:36,803 INFO L226 Difference]: Without dead ends: 3879 [2020-12-22 08:47:36,807 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 [2020-12-22 08:47:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2020-12-22 08:47:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3877. [2020-12-22 08:47:37,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3877 states. [2020-12-22 08:47:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 5856 transitions. [2020-12-22 08:47:37,265 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 5856 transitions. Word has length 82 [2020-12-22 08:47:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:37,266 INFO L481 AbstractCegarLoop]: Abstraction has 3877 states and 5856 transitions. [2020-12-22 08:47:37,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:47:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 5856 transitions. [2020-12-22 08:47:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:47:37,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:37,268 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, 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, 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] [2020-12-22 08:47:37,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:47:37,269 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:37,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1136565019, now seen corresponding path program 1 times [2020-12-22 08:47:37,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:37,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169881323] [2020-12-22 08:47:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:37,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169881323] [2020-12-22 08:47:37,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:37,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:47:37,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629714367] [2020-12-22 08:47:37,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:47:37,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:37,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:47:37,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:47:37,349 INFO L87 Difference]: Start difference. First operand 3877 states and 5856 transitions. Second operand 3 states. [2020-12-22 08:47:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:38,212 INFO L93 Difference]: Finished difference Result 10785 states and 16290 transitions. [2020-12-22 08:47:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:47:38,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 08:47:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:38,253 INFO L225 Difference]: With dead ends: 10785 [2020-12-22 08:47:38,253 INFO L226 Difference]: Without dead ends: 7135 [2020-12-22 08:47:38,261 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 [2020-12-22 08:47:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7135 states. [2020-12-22 08:47:39,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7135 to 7005. [2020-12-22 08:47:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7005 states. [2020-12-22 08:47:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7005 states to 7005 states and 10440 transitions. [2020-12-22 08:47:39,038 INFO L78 Accepts]: Start accepts. Automaton has 7005 states and 10440 transitions. Word has length 82 [2020-12-22 08:47:39,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:39,038 INFO L481 AbstractCegarLoop]: Abstraction has 7005 states and 10440 transitions. [2020-12-22 08:47:39,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:47:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7005 states and 10440 transitions. [2020-12-22 08:47:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:47:39,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:39,041 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, 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, 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] [2020-12-22 08:47:39,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:47:39,041 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:39,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1295122343, now seen corresponding path program 1 times [2020-12-22 08:47:39,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:39,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953198331] [2020-12-22 08:47:39,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:39,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953198331] [2020-12-22 08:47:39,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:39,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:47:39,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470633477] [2020-12-22 08:47:39,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:47:39,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:39,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:47:39,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:47:39,158 INFO L87 Difference]: Start difference. First operand 7005 states and 10440 transitions. Second operand 7 states. [2020-12-22 08:47:41,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:41,030 INFO L93 Difference]: Finished difference Result 18863 states and 28190 transitions. [2020-12-22 08:47:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:47:41,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:47:41,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:41,084 INFO L225 Difference]: With dead ends: 18863 [2020-12-22 08:47:41,085 INFO L226 Difference]: Without dead ends: 16349 [2020-12-22 08:47:41,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:47:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16349 states. [2020-12-22 08:47:42,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16349 to 8713. [2020-12-22 08:47:42,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8713 states. [2020-12-22 08:47:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12988 transitions. [2020-12-22 08:47:42,177 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12988 transitions. Word has length 82 [2020-12-22 08:47:42,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:42,177 INFO L481 AbstractCegarLoop]: Abstraction has 8713 states and 12988 transitions. [2020-12-22 08:47:42,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:47:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12988 transitions. [2020-12-22 08:47:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:47:42,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:42,179 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, 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, 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, 1, 1, 1, 1, 1, 1] [2020-12-22 08:47:42,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:47:42,179 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:42,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1184031025, now seen corresponding path program 1 times [2020-12-22 08:47:42,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:42,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548667813] [2020-12-22 08:47:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:42,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548667813] [2020-12-22 08:47:42,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:42,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:47:42,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87460465] [2020-12-22 08:47:42,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:47:42,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:42,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:47:42,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:47:42,308 INFO L87 Difference]: Start difference. First operand 8713 states and 12988 transitions. Second operand 7 states. [2020-12-22 08:47:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:44,045 INFO L93 Difference]: Finished difference Result 21069 states and 31494 transitions. [2020-12-22 08:47:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:47:44,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:47:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:44,084 INFO L225 Difference]: With dead ends: 21069 [2020-12-22 08:47:44,084 INFO L226 Difference]: Without dead ends: 18555 [2020-12-22 08:47:44,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:47:44,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18555 states. [2020-12-22 08:47:45,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18555 to 10460. [2020-12-22 08:47:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10460 states. [2020-12-22 08:47:45,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 15596 transitions. [2020-12-22 08:47:45,247 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 15596 transitions. Word has length 82 [2020-12-22 08:47:45,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:45,248 INFO L481 AbstractCegarLoop]: Abstraction has 10460 states and 15596 transitions. [2020-12-22 08:47:45,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:47:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 15596 transitions. [2020-12-22 08:47:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:47:45,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:45,250 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, 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, 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] [2020-12-22 08:47:45,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:47:45,251 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash 392667471, now seen corresponding path program 1 times [2020-12-22 08:47:45,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:45,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654716564] [2020-12-22 08:47:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:45,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654716564] [2020-12-22 08:47:45,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:45,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:47:45,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760140095] [2020-12-22 08:47:45,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:47:45,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:45,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:47:45,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:47:45,417 INFO L87 Difference]: Start difference. First operand 10460 states and 15596 transitions. Second operand 7 states. [2020-12-22 08:47:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:47,546 INFO L93 Difference]: Finished difference Result 22621 states and 33810 transitions. [2020-12-22 08:47:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:47:47,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:47:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:47,580 INFO L225 Difference]: With dead ends: 22621 [2020-12-22 08:47:47,581 INFO L226 Difference]: Without dead ends: 20107 [2020-12-22 08:47:47,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:47:47,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20107 states. [2020-12-22 08:47:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20107 to 12188. [2020-12-22 08:47:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12188 states. [2020-12-22 08:47:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 18176 transitions. [2020-12-22 08:47:48,834 INFO L78 Accepts]: Start accepts. Automaton has 12188 states and 18176 transitions. Word has length 82 [2020-12-22 08:47:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:48,835 INFO L481 AbstractCegarLoop]: Abstraction has 12188 states and 18176 transitions. [2020-12-22 08:47:48,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:47:48,835 INFO L276 IsEmpty]: Start isEmpty. Operand 12188 states and 18176 transitions. [2020-12-22 08:47:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:47:48,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:48,837 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, 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, 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] [2020-12-22 08:47:48,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:47:48,838 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:48,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1274660632, now seen corresponding path program 1 times [2020-12-22 08:47:48,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:48,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883945963] [2020-12-22 08:47:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:48,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883945963] [2020-12-22 08:47:48,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:48,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:47:48,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143763425] [2020-12-22 08:47:48,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:47:48,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:48,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:47:48,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:47:48,947 INFO L87 Difference]: Start difference. First operand 12188 states and 18176 transitions. Second operand 5 states. [2020-12-22 08:47:51,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:51,368 INFO L93 Difference]: Finished difference Result 20742 states and 30881 transitions. [2020-12-22 08:47:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:47:51,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 08:47:51,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:51,390 INFO L225 Difference]: With dead ends: 20742 [2020-12-22 08:47:51,390 INFO L226 Difference]: Without dead ends: 20740 [2020-12-22 08:47:51,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:47:51,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20740 states. [2020-12-22 08:47:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20740 to 12284. [2020-12-22 08:47:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12284 states. [2020-12-22 08:47:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12284 states to 12284 states and 18216 transitions. [2020-12-22 08:47:52,727 INFO L78 Accepts]: Start accepts. Automaton has 12284 states and 18216 transitions. Word has length 83 [2020-12-22 08:47:52,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:52,727 INFO L481 AbstractCegarLoop]: Abstraction has 12284 states and 18216 transitions. [2020-12-22 08:47:52,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:47:52,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12284 states and 18216 transitions. [2020-12-22 08:47:52,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:47:52,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:52,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1] [2020-12-22 08:47:52,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:47:52,731 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:52,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1071199524, now seen corresponding path program 1 times [2020-12-22 08:47:52,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:52,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707820641] [2020-12-22 08:47:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:53,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707820641] [2020-12-22 08:47:53,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:53,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:47:53,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601353238] [2020-12-22 08:47:53,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:47:53,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:53,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:47:53,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:47:53,038 INFO L87 Difference]: Start difference. First operand 12284 states and 18216 transitions. Second operand 9 states. [2020-12-22 08:47:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:57,169 INFO L93 Difference]: Finished difference Result 42101 states and 62579 transitions. [2020-12-22 08:47:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:47:57,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-12-22 08:47:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:57,203 INFO L225 Difference]: With dead ends: 42101 [2020-12-22 08:47:57,203 INFO L226 Difference]: Without dead ends: 30015 [2020-12-22 08:47:57,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:47:57,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30015 states. [2020-12-22 08:47:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30015 to 12203. [2020-12-22 08:47:58,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12203 states. [2020-12-22 08:47:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12203 states to 12203 states and 18095 transitions. [2020-12-22 08:47:58,856 INFO L78 Accepts]: Start accepts. Automaton has 12203 states and 18095 transitions. Word has length 83 [2020-12-22 08:47:58,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:58,856 INFO L481 AbstractCegarLoop]: Abstraction has 12203 states and 18095 transitions. [2020-12-22 08:47:58,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:47:58,857 INFO L276 IsEmpty]: Start isEmpty. Operand 12203 states and 18095 transitions. [2020-12-22 08:47:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:47:58,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:58,858 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, 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, 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] [2020-12-22 08:47:58,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:47:58,858 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:58,859 INFO L82 PathProgramCache]: Analyzing trace with hash -49884989, now seen corresponding path program 1 times [2020-12-22 08:47:58,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:58,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158552961] [2020-12-22 08:47:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:59,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158552961] [2020-12-22 08:47:59,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:59,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:47:59,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974297030] [2020-12-22 08:47:59,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:47:59,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:59,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:47:59,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:47:59,087 INFO L87 Difference]: Start difference. First operand 12203 states and 18095 transitions. Second operand 10 states. [2020-12-22 08:48:02,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:48:02,088 INFO L93 Difference]: Finished difference Result 26590 states and 39384 transitions. [2020-12-22 08:48:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:48:02,089 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:48:02,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:48:02,105 INFO L225 Difference]: With dead ends: 26590 [2020-12-22 08:48:02,105 INFO L226 Difference]: Without dead ends: 14501 [2020-12-22 08:48:02,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:48:02,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14501 states. [2020-12-22 08:48:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14501 to 12203. [2020-12-22 08:48:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12203 states. [2020-12-22 08:48:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12203 states to 12203 states and 18093 transitions. [2020-12-22 08:48:03,747 INFO L78 Accepts]: Start accepts. Automaton has 12203 states and 18093 transitions. Word has length 84 [2020-12-22 08:48:03,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:48:03,748 INFO L481 AbstractCegarLoop]: Abstraction has 12203 states and 18093 transitions. [2020-12-22 08:48:03,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:48:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 12203 states and 18093 transitions. [2020-12-22 08:48:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:48:03,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:48:03,749 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, 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, 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] [2020-12-22 08:48:03,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:48:03,750 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:48:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:48:03,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1500586117, now seen corresponding path program 1 times [2020-12-22 08:48:03,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:48:03,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605792728] [2020-12-22 08:48:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:48:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:48:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:48:03,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605792728] [2020-12-22 08:48:03,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:48:03,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:48:03,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88452225] [2020-12-22 08:48:03,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:48:03,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:48:03,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:48:03,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:48:03,990 INFO L87 Difference]: Start difference. First operand 12203 states and 18093 transitions. Second operand 10 states. [2020-12-22 08:48:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:48:08,359 INFO L93 Difference]: Finished difference Result 36819 states and 54429 transitions. [2020-12-22 08:48:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:48:08,360 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:48:08,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:48:08,395 INFO L225 Difference]: With dead ends: 36819 [2020-12-22 08:48:08,396 INFO L226 Difference]: Without dead ends: 24740 [2020-12-22 08:48:08,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:48:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24740 states. [2020-12-22 08:48:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24740 to 12203. [2020-12-22 08:48:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12203 states. [2020-12-22 08:48:10,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12203 states to 12203 states and 18089 transitions. [2020-12-22 08:48:10,325 INFO L78 Accepts]: Start accepts. Automaton has 12203 states and 18089 transitions. Word has length 84 [2020-12-22 08:48:10,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:48:10,325 INFO L481 AbstractCegarLoop]: Abstraction has 12203 states and 18089 transitions. [2020-12-22 08:48:10,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:48:10,325 INFO L276 IsEmpty]: Start isEmpty. Operand 12203 states and 18089 transitions. [2020-12-22 08:48:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:48:10,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:48:10,326 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, 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, 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, 1] [2020-12-22 08:48:10,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:48:10,327 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:48:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:48:10,327 INFO L82 PathProgramCache]: Analyzing trace with hash 842057330, now seen corresponding path program 1 times [2020-12-22 08:48:10,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:48:10,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796616781] [2020-12-22 08:48:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:48:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:48:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:48:10,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796616781] [2020-12-22 08:48:10,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:48:10,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:48:10,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711708909] [2020-12-22 08:48:10,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:48:10,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:48:10,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:48:10,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:48:10,540 INFO L87 Difference]: Start difference. First operand 12203 states and 18089 transitions. Second operand 10 states. [2020-12-22 08:48:15,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:48:15,398 INFO L93 Difference]: Finished difference Result 36759 states and 54335 transitions. [2020-12-22 08:48:15,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:48:15,399 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-12-22 08:48:15,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:48:15,430 INFO L225 Difference]: With dead ends: 36759 [2020-12-22 08:48:15,430 INFO L226 Difference]: Without dead ends: 24730 [2020-12-22 08:48:15,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:48:15,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24730 states. [2020-12-22 08:48:17,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24730 to 12203. [2020-12-22 08:48:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12203 states. [2020-12-22 08:48:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12203 states to 12203 states and 18083 transitions. [2020-12-22 08:48:17,547 INFO L78 Accepts]: Start accepts. Automaton has 12203 states and 18083 transitions. Word has length 85 [2020-12-22 08:48:17,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:48:17,547 INFO L481 AbstractCegarLoop]: Abstraction has 12203 states and 18083 transitions. [2020-12-22 08:48:17,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:48:17,547 INFO L276 IsEmpty]: Start isEmpty. Operand 12203 states and 18083 transitions. [2020-12-22 08:48:17,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 08:48:17,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:48:17,549 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, 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, 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, 1, 1] [2020-12-22 08:48:17,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:48:17,549 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:48:17,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:48:17,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2050544046, now seen corresponding path program 1 times [2020-12-22 08:48:17,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:48:17,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266767602] [2020-12-22 08:48:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:48:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:48:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:48:17,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266767602] [2020-12-22 08:48:17,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:48:17,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:48:17,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148665] [2020-12-22 08:48:17,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:48:17,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:48:17,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:48:17,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:48:17,780 INFO L87 Difference]: Start difference. First operand 12203 states and 18083 transitions. Second operand 10 states. [2020-12-22 08:48:21,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:48:21,885 INFO L93 Difference]: Finished difference Result 30476 states and 45078 transitions. [2020-12-22 08:48:21,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:48:21,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-12-22 08:48:21,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:48:21,909 INFO L225 Difference]: With dead ends: 30476 [2020-12-22 08:48:21,909 INFO L226 Difference]: Without dead ends: 18477 [2020-12-22 08:48:21,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:48:21,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18477 states. [2020-12-22 08:48:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18477 to 12203. [2020-12-22 08:48:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12203 states. [2020-12-22 08:48:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12203 states to 12203 states and 18070 transitions. [2020-12-22 08:48:24,107 INFO L78 Accepts]: Start accepts. Automaton has 12203 states and 18070 transitions. Word has length 86 [2020-12-22 08:48:24,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:48:24,107 INFO L481 AbstractCegarLoop]: Abstraction has 12203 states and 18070 transitions. [2020-12-22 08:48:24,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:48:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 12203 states and 18070 transitions. [2020-12-22 08:48:24,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 08:48:24,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:48:24,109 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, 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, 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, 1, 1, 1] [2020-12-22 08:48:24,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:48:24,110 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:48:24,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:48:24,110 INFO L82 PathProgramCache]: Analyzing trace with hash 420822697, now seen corresponding path program 1 times [2020-12-22 08:48:24,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:48:24,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653784222] [2020-12-22 08:48:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:48:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:48:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:48:25,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653784222] [2020-12-22 08:48:25,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:48:25,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-12-22 08:48:25,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286902340] [2020-12-22 08:48:25,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-22 08:48:25,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:48:25,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-22 08:48:25,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 08:48:25,921 INFO L87 Difference]: Start difference. First operand 12203 states and 18070 transitions. Second operand 33 states. [2020-12-22 08:48:26,275 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-12-22 08:48:26,941 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-12-22 08:48:27,150 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-22 08:48:27,359 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-22 08:48:27,577 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-12-22 08:48:27,779 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-22 08:48:28,265 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-12-22 08:48:28,509 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-22 08:48:28,792 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-22 08:48:29,087 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-12-22 08:48:29,474 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-12-22 08:48:29,874 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-12-22 08:48:30,359 WARN L197 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-12-22 08:48:30,836 WARN L197 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-12-22 08:48:31,407 WARN L197 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-12-22 08:48:31,688 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-22 08:48:31,968 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-22 08:48:33,891 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 08:48:34,625 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-22 08:48:35,145 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-12-22 08:48:44,488 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-12-22 08:48:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:48:58,891 INFO L93 Difference]: Finished difference Result 89429 states and 132800 transitions. [2020-12-22 08:48:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-22 08:48:58,891 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 87 [2020-12-22 08:48:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:48:58,988 INFO L225 Difference]: With dead ends: 89429 [2020-12-22 08:48:58,988 INFO L226 Difference]: Without dead ends: 85176 [2020-12-22 08:48:59,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=722, Invalid=4390, Unknown=0, NotChecked=0, Total=5112 [2020-12-22 08:48:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85176 states. [2020-12-22 08:49:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85176 to 12236. [2020-12-22 08:49:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12236 states. [2020-12-22 08:49:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12236 states to 12236 states and 18111 transitions. [2020-12-22 08:49:02,736 INFO L78 Accepts]: Start accepts. Automaton has 12236 states and 18111 transitions. Word has length 87 [2020-12-22 08:49:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:02,737 INFO L481 AbstractCegarLoop]: Abstraction has 12236 states and 18111 transitions. [2020-12-22 08:49:02,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-22 08:49:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 12236 states and 18111 transitions. [2020-12-22 08:49:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 08:49:02,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:02,739 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, 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, 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, 1, 1, 1] [2020-12-22 08:49:02,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:49:02,740 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:02,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:02,740 INFO L82 PathProgramCache]: Analyzing trace with hash -891179609, now seen corresponding path program 1 times [2020-12-22 08:49:02,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:02,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003864498] [2020-12-22 08:49:02,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:49:05,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003864498] [2020-12-22 08:49:05,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:05,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-12-22 08:49:05,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905804091] [2020-12-22 08:49:05,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-22 08:49:05,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:05,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-22 08:49:05,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:49:05,425 INFO L87 Difference]: Start difference. First operand 12236 states and 18111 transitions. Second operand 34 states. [2020-12-22 08:49:06,030 WARN L197 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 120 [2020-12-22 08:49:06,694 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-12-22 08:49:06,880 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-22 08:49:07,135 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-12-22 08:49:07,422 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-12-22 08:49:07,726 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-12-22 08:49:08,038 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-12-22 08:49:08,414 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-12-22 08:49:09,092 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-22 08:49:09,468 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-12-22 08:49:09,924 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-12-22 08:49:10,420 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-12-22 08:49:11,007 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-12-22 08:49:11,653 WARN L197 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2020-12-22 08:49:12,408 WARN L197 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 116 [2020-12-22 08:49:13,198 WARN L197 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 130 [2020-12-22 08:49:14,192 WARN L197 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 146 [2020-12-22 08:49:14,642 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-12-22 08:49:15,072 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-12-22 08:49:15,359 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-12-22 08:49:15,704 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-12-22 08:49:15,971 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-12-22 08:49:16,236 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-12-22 08:49:16,490 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-12-22 08:49:16,697 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:49:16,936 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 08:49:17,402 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 08:49:18,124 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-12-22 08:49:18,821 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-12-22 08:49:19,321 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-12-22 08:49:20,206 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-12-22 08:49:20,593 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-12-22 08:49:21,333 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-12-22 08:49:21,699 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-12-22 08:49:22,013 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-12-22 08:49:22,649 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 08:49:25,465 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-22 08:49:27,990 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 08:49:28,664 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-22 08:49:35,405 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-22 08:50:01,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:01,329 INFO L93 Difference]: Finished difference Result 109595 states and 162835 transitions. [2020-12-22 08:50:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-12-22 08:50:01,330 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 87 [2020-12-22 08:50:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:01,484 INFO L225 Difference]: With dead ends: 109595 [2020-12-22 08:50:01,484 INFO L226 Difference]: Without dead ends: 107063 [2020-12-22 08:50:01,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=1021, Invalid=5785, Unknown=0, NotChecked=0, Total=6806 [2020-12-22 08:50:01,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107063 states. [2020-12-22 08:50:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107063 to 12252. [2020-12-22 08:50:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12252 states. [2020-12-22 08:50:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12252 states to 12252 states and 18132 transitions. [2020-12-22 08:50:06,215 INFO L78 Accepts]: Start accepts. Automaton has 12252 states and 18132 transitions. Word has length 87 [2020-12-22 08:50:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:06,215 INFO L481 AbstractCegarLoop]: Abstraction has 12252 states and 18132 transitions. [2020-12-22 08:50:06,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-22 08:50:06,215 INFO L276 IsEmpty]: Start isEmpty. Operand 12252 states and 18132 transitions. [2020-12-22 08:50:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 08:50:06,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:06,217 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, 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, 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, 1, 1, 1] [2020-12-22 08:50:06,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:50:06,217 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:06,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:06,218 INFO L82 PathProgramCache]: Analyzing trace with hash 927353448, now seen corresponding path program 1 times [2020-12-22 08:50:06,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:06,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934751946] [2020-12-22 08:50:06,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:50:08,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934751946] [2020-12-22 08:50:08,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:08,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-12-22 08:50:08,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019739842] [2020-12-22 08:50:08,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-22 08:50:08,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:08,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-22 08:50:08,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:50:08,905 INFO L87 Difference]: Start difference. First operand 12252 states and 18132 transitions. Second operand 34 states. [2020-12-22 08:50:09,653 WARN L197 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 131 [2020-12-22 08:50:10,427 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:50:10,659 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2020-12-22 08:50:10,939 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-12-22 08:50:11,239 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-12-22 08:50:11,548 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-12-22 08:50:11,881 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-12-22 08:50:12,186 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-12-22 08:50:12,937 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-12-22 08:50:13,413 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-12-22 08:50:14,027 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 107 [2020-12-22 08:50:14,761 WARN L197 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 126 [2020-12-22 08:50:15,683 WARN L197 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 134 [2020-12-22 08:50:16,751 WARN L197 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 144 [2020-12-22 08:50:17,982 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 167 DAG size of output: 155 [2020-12-22 08:50:19,320 WARN L197 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 175 DAG size of output: 162 [2020-12-22 08:50:20,853 WARN L197 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 184 DAG size of output: 171 [2020-12-22 08:50:21,379 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-12-22 08:50:21,855 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-12-22 08:50:22,352 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-12-22 08:50:22,792 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-12-22 08:50:23,138 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-12-22 08:50:23,479 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-12-22 08:50:23,805 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-22 08:50:24,059 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-12-22 08:50:24,454 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-12-22 08:50:25,070 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-22 08:50:25,571 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:50:26,297 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-22 08:50:26,879 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-22 08:50:27,094 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-12-22 08:50:27,639 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-12-22 08:50:27,895 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-12-22 08:50:29,700 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-12-22 08:50:38,270 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2020-12-22 08:51:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:07,333 INFO L93 Difference]: Finished difference Result 80129 states and 118925 transitions. [2020-12-22 08:51:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-22 08:51:07,339 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 87 [2020-12-22 08:51:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:07,447 INFO L225 Difference]: With dead ends: 80129 [2020-12-22 08:51:07,448 INFO L226 Difference]: Without dead ends: 77598 [2020-12-22 08:51:07,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=801, Invalid=4601, Unknown=0, NotChecked=0, Total=5402 [2020-12-22 08:51:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77598 states. [2020-12-22 08:51:12,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77598 to 12256. [2020-12-22 08:51:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12256 states. [2020-12-22 08:51:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12256 states to 12256 states and 18136 transitions. [2020-12-22 08:51:12,209 INFO L78 Accepts]: Start accepts. Automaton has 12256 states and 18136 transitions. Word has length 87 [2020-12-22 08:51:12,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:12,209 INFO L481 AbstractCegarLoop]: Abstraction has 12256 states and 18136 transitions. [2020-12-22 08:51:12,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-22 08:51:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12256 states and 18136 transitions. [2020-12-22 08:51:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 08:51:12,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:12,210 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, 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, 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, 1, 1, 1] [2020-12-22 08:51:12,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:51:12,210 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:12,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:12,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1358537207, now seen corresponding path program 1 times [2020-12-22 08:51:12,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:12,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674919136] [2020-12-22 08:51:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:51:15,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674919136] [2020-12-22 08:51:15,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:15,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-12-22 08:51:15,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810687956] [2020-12-22 08:51:15,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-22 08:51:15,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:15,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-22 08:51:15,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:51:15,505 INFO L87 Difference]: Start difference. First operand 12256 states and 18136 transitions. Second operand 34 states. [2020-12-22 08:51:16,266 WARN L197 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 116 [2020-12-22 08:51:16,874 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:51:17,160 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:51:17,439 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-12-22 08:51:17,734 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-22 08:51:18,046 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-22 08:51:18,373 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:51:18,715 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-22 08:51:19,614 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-22 08:51:20,078 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-12-22 08:51:20,670 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-12-22 08:51:21,275 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-12-22 08:51:22,036 WARN L197 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 98 [2020-12-22 08:51:22,823 WARN L197 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 108 [2020-12-22 08:51:23,774 WARN L197 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 119 [2020-12-22 08:51:24,822 WARN L197 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 128 [2020-12-22 08:51:25,891 WARN L197 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 139 [2020-12-22 08:51:26,330 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-22 08:51:26,839 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-22 08:51:27,250 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-22 08:51:27,745 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-22 08:51:28,136 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-22 08:51:28,495 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 08:51:29,054 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 08:51:29,897 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 08:51:30,680 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-22 08:51:31,415 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-22 08:51:32,540 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-22 08:51:33,289 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 08:51:34,139 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-12-22 08:51:34,967 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43