/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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:07:59,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:07:59,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:07:59,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:07:59,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:07:59,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:07:59,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:07:59,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:07:59,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:07:59,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:07:59,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:07:59,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:07:59,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:07:59,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:07:59,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:07:59,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:07:59,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:07:59,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:07:59,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:07:59,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:07:59,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:07:59,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:07:59,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:07:59,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:07:59,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:07:59,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:07:59,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:07:59,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:07:59,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:07:59,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:07:59,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:07:59,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:07:59,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:07:59,932 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:07:59,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:07:59,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:07:59,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:07:59,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:07:59,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:07:59,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:07:59,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:07:59,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:07:59,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:07:59,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:07:59,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:07:59,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:07:59,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:07:59,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:07:59,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:07:59,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:07:59,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:07:59,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:07:59,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:07:59,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:07:59,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:08:00,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:08:00,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:08:00,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:08:00,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:08:00,356 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:08:00,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c [2020-12-22 10:08:00,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb35e1b4/ca5a16901e064dc1857a5fc098b05475/FLAGf902cc9d7 [2020-12-22 10:08:01,420 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:08:01,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c [2020-12-22 10:08:01,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb35e1b4/ca5a16901e064dc1857a5fc098b05475/FLAGf902cc9d7 [2020-12-22 10:08:01,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb35e1b4/ca5a16901e064dc1857a5fc098b05475 [2020-12-22 10:08:01,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:08:01,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:08:01,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:08:01,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:08:01,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:08:01,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:08:01" (1/1) ... [2020-12-22 10:08:01,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a4c87e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:01, skipping insertion in model container [2020-12-22 10:08:01,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:08:01" (1/1) ... [2020-12-22 10:08:01,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:08:02,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:08:02,573 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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c[15614,15627] [2020-12-22 10:08:02,657 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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c[23119,23132] [2020-12-22 10:08:03,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:08:03,616 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:08:03,753 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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c[15614,15627] [2020-12-22 10:08:03,780 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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c[23119,23132] [2020-12-22 10:08:04,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:08:04,462 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:08:04,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04 WrapperNode [2020-12-22 10:08:04,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:08:04,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:08:04,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:08:04,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:08:04,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (1/1) ... [2020-12-22 10:08:04,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (1/1) ... [2020-12-22 10:08:04,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:08:04,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:08:04,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:08:04,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:08:04,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (1/1) ... [2020-12-22 10:08:04,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (1/1) ... [2020-12-22 10:08:04,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (1/1) ... [2020-12-22 10:08:04,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (1/1) ... [2020-12-22 10:08:05,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (1/1) ... [2020-12-22 10:08:05,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (1/1) ... [2020-12-22 10:08:05,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (1/1) ... [2020-12-22 10:08:05,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:08:05,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:08:05,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:08:05,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:08:05,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (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 10:08:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:08:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:08:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:08:05,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:08:10,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:08:10,991 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2020-12-22 10:08:10,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:08:10 BoogieIcfgContainer [2020-12-22 10:08:10,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:08:10,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:08:10,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:08:11,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:08:11,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:08:01" (1/3) ... [2020-12-22 10:08:11,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5219fe3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:08:11, skipping insertion in model container [2020-12-22 10:08:11,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:04" (2/3) ... [2020-12-22 10:08:11,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5219fe3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:08:11, skipping insertion in model container [2020-12-22 10:08:11,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:08:10" (3/3) ... [2020-12-22 10:08:11,004 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label09.c [2020-12-22 10:08:11,010 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:08:11,016 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:08:11,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:08:11,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:08:11,071 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:08:11,071 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:08:11,071 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:08:11,071 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:08:11,071 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:08:11,071 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:08:11,072 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:08:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states. [2020-12-22 10:08:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:08:11,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:11,119 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] [2020-12-22 10:08:11,119 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:11,126 INFO L82 PathProgramCache]: Analyzing trace with hash -321533933, now seen corresponding path program 1 times [2020-12-22 10:08:11,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:11,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193294416] [2020-12-22 10:08:11,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:11,434 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 10:08:11,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193294416] [2020-12-22 10:08:11,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:11,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:08:11,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396050176] [2020-12-22 10:08:11,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:08:11,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:11,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:08:11,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:08:11,471 INFO L87 Difference]: Start difference. First operand 927 states. Second operand 2 states. [2020-12-22 10:08:11,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:11,577 INFO L93 Difference]: Finished difference Result 1806 states and 3420 transitions. [2020-12-22 10:08:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:08:11,579 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2020-12-22 10:08:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:11,626 INFO L225 Difference]: With dead ends: 1806 [2020-12-22 10:08:11,627 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:08:11,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:08:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:08:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:08:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:08:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1622 transitions. [2020-12-22 10:08:11,788 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1622 transitions. Word has length 38 [2020-12-22 10:08:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:11,788 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1622 transitions. [2020-12-22 10:08:11,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:08:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1622 transitions. [2020-12-22 10:08:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:08:11,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:11,791 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] [2020-12-22 10:08:11,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:08:11,793 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:11,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:11,794 INFO L82 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2020-12-22 10:08:11,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:11,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186490774] [2020-12-22 10:08:11,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:12,027 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 10:08:12,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186490774] [2020-12-22 10:08:12,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:12,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:08:12,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245014598] [2020-12-22 10:08:12,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:08:12,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:12,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:08:12,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:08:12,032 INFO L87 Difference]: Start difference. First operand 861 states and 1622 transitions. Second operand 5 states. [2020-12-22 10:08:12,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:12,294 INFO L93 Difference]: Finished difference Result 926 states and 1723 transitions. [2020-12-22 10:08:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:08:12,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 10:08:12,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:12,302 INFO L225 Difference]: With dead ends: 926 [2020-12-22 10:08:12,302 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:08:12,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:08:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:08:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:08:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:08:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1582 transitions. [2020-12-22 10:08:12,335 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1582 transitions. Word has length 38 [2020-12-22 10:08:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:12,335 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1582 transitions. [2020-12-22 10:08:12,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:08:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1582 transitions. [2020-12-22 10:08:12,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 10:08:12,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:12,339 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] [2020-12-22 10:08:12,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:08:12,339 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:12,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:12,340 INFO L82 PathProgramCache]: Analyzing trace with hash -573497638, now seen corresponding path program 1 times [2020-12-22 10:08:12,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:12,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484508545] [2020-12-22 10:08:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:12,628 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 10:08:12,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484508545] [2020-12-22 10:08:12,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:12,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:12,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831731255] [2020-12-22 10:08:12,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:08:12,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:12,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:08:12,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:08:12,636 INFO L87 Difference]: Start difference. First operand 861 states and 1582 transitions. Second operand 4 states. [2020-12-22 10:08:23,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:23,723 INFO L93 Difference]: Finished difference Result 3116 states and 5891 transitions. [2020-12-22 10:08:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:08:23,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 10:08:23,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:23,738 INFO L225 Difference]: With dead ends: 3116 [2020-12-22 10:08:23,738 INFO L226 Difference]: Without dead ends: 2363 [2020-12-22 10:08:23,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:08:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-12-22 10:08:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2020-12-22 10:08:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-12-22 10:08:23,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3558 transitions. [2020-12-22 10:08:23,803 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3558 transitions. Word has length 67 [2020-12-22 10:08:23,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:23,804 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states and 3558 transitions. [2020-12-22 10:08:23,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:08:23,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3558 transitions. [2020-12-22 10:08:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:23,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:23,807 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 10:08:23,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:08:23,807 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:23,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:23,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2020-12-22 10:08:23,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:23,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536340248] [2020-12-22 10:08:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:23,975 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 10:08:23,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536340248] [2020-12-22 10:08:23,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:23,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:23,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969098320] [2020-12-22 10:08:23,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:23,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:23,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:23,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:23,978 INFO L87 Difference]: Start difference. First operand 2363 states and 3558 transitions. Second operand 3 states. [2020-12-22 10:08:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:24,025 INFO L93 Difference]: Finished difference Result 2479 states and 3742 transitions. [2020-12-22 10:08:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:24,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:24,039 INFO L225 Difference]: With dead ends: 2479 [2020-12-22 10:08:24,039 INFO L226 Difference]: Without dead ends: 2418 [2020-12-22 10:08:24,041 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 10:08:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2020-12-22 10:08:24,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2416. [2020-12-22 10:08:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2416 states. [2020-12-22 10:08:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3643 transitions. [2020-12-22 10:08:24,103 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3643 transitions. Word has length 77 [2020-12-22 10:08:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:24,104 INFO L481 AbstractCegarLoop]: Abstraction has 2416 states and 3643 transitions. [2020-12-22 10:08:24,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3643 transitions. [2020-12-22 10:08:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:24,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:24,107 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 10:08:24,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:08:24,107 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:24,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:24,108 INFO L82 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2020-12-22 10:08:24,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:24,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070097621] [2020-12-22 10:08:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:24,270 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 10:08:24,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070097621] [2020-12-22 10:08:24,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:24,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:24,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848819080] [2020-12-22 10:08:24,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:24,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:24,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:24,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:24,275 INFO L87 Difference]: Start difference. First operand 2416 states and 3643 transitions. Second operand 3 states. [2020-12-22 10:08:24,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:24,330 INFO L93 Difference]: Finished difference Result 2632 states and 3987 transitions. [2020-12-22 10:08:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:24,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:24,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:24,344 INFO L225 Difference]: With dead ends: 2632 [2020-12-22 10:08:24,344 INFO L226 Difference]: Without dead ends: 2518 [2020-12-22 10:08:24,346 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 10:08:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2020-12-22 10:08:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2020-12-22 10:08:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-12-22 10:08:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3802 transitions. [2020-12-22 10:08:24,410 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3802 transitions. Word has length 77 [2020-12-22 10:08:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:24,410 INFO L481 AbstractCegarLoop]: Abstraction has 2516 states and 3802 transitions. [2020-12-22 10:08:24,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3802 transitions. [2020-12-22 10:08:24,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:24,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:24,412 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 10:08:24,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:08:24,412 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:24,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:24,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2020-12-22 10:08:24,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:24,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415955074] [2020-12-22 10:08:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:24,522 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 10:08:24,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415955074] [2020-12-22 10:08:24,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:24,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:24,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875716982] [2020-12-22 10:08:24,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:24,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:24,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:24,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:24,525 INFO L87 Difference]: Start difference. First operand 2516 states and 3802 transitions. Second operand 3 states. [2020-12-22 10:08:24,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:24,594 INFO L93 Difference]: Finished difference Result 2920 states and 4444 transitions. [2020-12-22 10:08:24,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:24,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:24,611 INFO L225 Difference]: With dead ends: 2920 [2020-12-22 10:08:24,611 INFO L226 Difference]: Without dead ends: 2706 [2020-12-22 10:08:24,613 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 10:08:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2020-12-22 10:08:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2704. [2020-12-22 10:08:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2020-12-22 10:08:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 4098 transitions. [2020-12-22 10:08:24,695 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 4098 transitions. Word has length 77 [2020-12-22 10:08:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:24,695 INFO L481 AbstractCegarLoop]: Abstraction has 2704 states and 4098 transitions. [2020-12-22 10:08:24,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 4098 transitions. [2020-12-22 10:08:24,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:24,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:24,696 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 10:08:24,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:08:24,698 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:24,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:24,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2020-12-22 10:08:24,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:24,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254753848] [2020-12-22 10:08:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:24,821 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 10:08:24,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254753848] [2020-12-22 10:08:24,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:24,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:24,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863313893] [2020-12-22 10:08:24,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:24,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:24,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:24,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:24,825 INFO L87 Difference]: Start difference. First operand 2704 states and 4098 transitions. Second operand 3 states. [2020-12-22 10:08:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:24,892 INFO L93 Difference]: Finished difference Result 3460 states and 5292 transitions. [2020-12-22 10:08:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:24,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:24,910 INFO L225 Difference]: With dead ends: 3460 [2020-12-22 10:08:24,911 INFO L226 Difference]: Without dead ends: 3058 [2020-12-22 10:08:24,915 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 10:08:24,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-12-22 10:08:24,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3056. [2020-12-22 10:08:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3056 states. [2020-12-22 10:08:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4646 transitions. [2020-12-22 10:08:24,999 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4646 transitions. Word has length 77 [2020-12-22 10:08:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:25,001 INFO L481 AbstractCegarLoop]: Abstraction has 3056 states and 4646 transitions. [2020-12-22 10:08:25,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4646 transitions. [2020-12-22 10:08:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:25,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:25,009 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 10:08:25,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:08:25,009 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:25,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:25,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2020-12-22 10:08:25,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:25,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189700629] [2020-12-22 10:08:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:08:25,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189700629] [2020-12-22 10:08:25,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:25,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:25,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109118257] [2020-12-22 10:08:25,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:25,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:25,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:25,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:25,153 INFO L87 Difference]: Start difference. First operand 3056 states and 4646 transitions. Second operand 3 states. [2020-12-22 10:08:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:25,264 INFO L93 Difference]: Finished difference Result 4468 states and 6856 transitions. [2020-12-22 10:08:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:25,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:25,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:25,286 INFO L225 Difference]: With dead ends: 4468 [2020-12-22 10:08:25,287 INFO L226 Difference]: Without dead ends: 3714 [2020-12-22 10:08:25,291 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 10:08:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2020-12-22 10:08:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3712. [2020-12-22 10:08:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3712 states. [2020-12-22 10:08:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 5654 transitions. [2020-12-22 10:08:25,424 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 5654 transitions. Word has length 77 [2020-12-22 10:08:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:25,424 INFO L481 AbstractCegarLoop]: Abstraction has 3712 states and 5654 transitions. [2020-12-22 10:08:25,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 5654 transitions. [2020-12-22 10:08:25,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:25,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:25,426 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 10:08:25,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:08:25,426 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:25,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:25,427 INFO L82 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2020-12-22 10:08:25,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:25,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001630051] [2020-12-22 10:08:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:25,582 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 10:08:25,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001630051] [2020-12-22 10:08:25,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:25,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:25,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512297692] [2020-12-22 10:08:25,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:25,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:25,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:25,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:25,588 INFO L87 Difference]: Start difference. First operand 3712 states and 5654 transitions. Second operand 8 states. [2020-12-22 10:08:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:26,690 INFO L93 Difference]: Finished difference Result 20632 states and 31970 transitions. [2020-12-22 10:08:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 10:08:26,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-12-22 10:08:26,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:26,774 INFO L225 Difference]: With dead ends: 20632 [2020-12-22 10:08:26,774 INFO L226 Difference]: Without dead ends: 19222 [2020-12-22 10:08:26,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:08:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19222 states. [2020-12-22 10:08:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19222 to 5120. [2020-12-22 10:08:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5120 states. [2020-12-22 10:08:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 7782 transitions. [2020-12-22 10:08:27,219 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 7782 transitions. Word has length 77 [2020-12-22 10:08:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:27,219 INFO L481 AbstractCegarLoop]: Abstraction has 5120 states and 7782 transitions. [2020-12-22 10:08:27,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 7782 transitions. [2020-12-22 10:08:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:08:27,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:27,221 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 10:08:27,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:08:27,221 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:27,222 INFO L82 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2020-12-22 10:08:27,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:27,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836480361] [2020-12-22 10:08:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:27,323 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 10:08:27,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836480361] [2020-12-22 10:08:27,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:27,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:27,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201449243] [2020-12-22 10:08:27,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:27,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:27,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:27,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:27,329 INFO L87 Difference]: Start difference. First operand 5120 states and 7782 transitions. Second operand 3 states. [2020-12-22 10:08:27,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:27,802 INFO L93 Difference]: Finished difference Result 10404 states and 15816 transitions. [2020-12-22 10:08:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:27,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:08:27,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:27,822 INFO L225 Difference]: With dead ends: 10404 [2020-12-22 10:08:27,823 INFO L226 Difference]: Without dead ends: 7586 [2020-12-22 10:08:27,831 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 10:08:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2020-12-22 10:08:28,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 7520. [2020-12-22 10:08:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:08:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11270 transitions. [2020-12-22 10:08:28,346 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11270 transitions. Word has length 79 [2020-12-22 10:08:28,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:28,347 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11270 transitions. [2020-12-22 10:08:28,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11270 transitions. [2020-12-22 10:08:28,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:08:28,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:28,348 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 10:08:28,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:08:28,349 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:28,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:28,350 INFO L82 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2020-12-22 10:08:28,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:28,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184233228] [2020-12-22 10:08:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:28,674 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 10:08:28,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184233228] [2020-12-22 10:08:28,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:28,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:28,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837697766] [2020-12-22 10:08:28,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:28,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:28,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:28,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:28,677 INFO L87 Difference]: Start difference. First operand 7520 states and 11270 transitions. Second operand 8 states. [2020-12-22 10:08:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:29,364 INFO L93 Difference]: Finished difference Result 12740 states and 19080 transitions. [2020-12-22 10:08:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:29,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 10:08:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:29,382 INFO L225 Difference]: With dead ends: 12740 [2020-12-22 10:08:29,382 INFO L226 Difference]: Without dead ends: 7522 [2020-12-22 10:08:29,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 10:08:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7522 states. [2020-12-22 10:08:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7522 to 7520. [2020-12-22 10:08:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:08:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11206 transitions. [2020-12-22 10:08:29,821 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11206 transitions. Word has length 79 [2020-12-22 10:08:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:29,821 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11206 transitions. [2020-12-22 10:08:29,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11206 transitions. [2020-12-22 10:08:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:08:29,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:29,829 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 10:08:29,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:08:29,829 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:29,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:29,830 INFO L82 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2020-12-22 10:08:29,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:29,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342515984] [2020-12-22 10:08:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:29,945 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 10:08:29,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342515984] [2020-12-22 10:08:29,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:29,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:08:29,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600175022] [2020-12-22 10:08:29,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:08:29,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:29,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:08:29,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:08:29,951 INFO L87 Difference]: Start difference. First operand 7520 states and 11206 transitions. Second operand 6 states. [2020-12-22 10:08:30,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:30,516 INFO L93 Difference]: Finished difference Result 12738 states and 18951 transitions. [2020-12-22 10:08:30,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:08:30,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 10:08:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:30,534 INFO L225 Difference]: With dead ends: 12738 [2020-12-22 10:08:30,535 INFO L226 Difference]: Without dead ends: 7520 [2020-12-22 10:08:30,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:08:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2020-12-22 10:08:30,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7520. [2020-12-22 10:08:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:08:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11142 transitions. [2020-12-22 10:08:30,963 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11142 transitions. Word has length 80 [2020-12-22 10:08:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:30,964 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11142 transitions. [2020-12-22 10:08:30,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:08:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11142 transitions. [2020-12-22 10:08:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:08:30,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:30,965 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 10:08:30,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:08:30,966 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:30,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:30,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2020-12-22 10:08:30,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:30,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540067752] [2020-12-22 10:08:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:31,084 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 10:08:31,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540067752] [2020-12-22 10:08:31,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:31,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:31,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254888199] [2020-12-22 10:08:31,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:31,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:31,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:31,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:31,086 INFO L87 Difference]: Start difference. First operand 7520 states and 11142 transitions. Second operand 8 states. [2020-12-22 10:08:31,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:31,916 INFO L93 Difference]: Finished difference Result 11426 states and 16785 transitions. [2020-12-22 10:08:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:08:31,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 10:08:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:31,943 INFO L225 Difference]: With dead ends: 11426 [2020-12-22 10:08:31,943 INFO L226 Difference]: Without dead ends: 11424 [2020-12-22 10:08:31,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:08:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11424 states. [2020-12-22 10:08:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11424 to 7712. [2020-12-22 10:08:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7712 states. [2020-12-22 10:08:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7712 states to 7712 states and 11302 transitions. [2020-12-22 10:08:32,582 INFO L78 Accepts]: Start accepts. Automaton has 7712 states and 11302 transitions. Word has length 80 [2020-12-22 10:08:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:32,582 INFO L481 AbstractCegarLoop]: Abstraction has 7712 states and 11302 transitions. [2020-12-22 10:08:32,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 7712 states and 11302 transitions. [2020-12-22 10:08:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 10:08:32,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:32,584 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 10:08:32,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:08:32,584 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:32,584 INFO L82 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2020-12-22 10:08:32,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:32,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139264058] [2020-12-22 10:08:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:32,639 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 10:08:32,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139264058] [2020-12-22 10:08:32,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:32,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:32,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361334299] [2020-12-22 10:08:32,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:32,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:32,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:32,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:32,642 INFO L87 Difference]: Start difference. First operand 7712 states and 11302 transitions. Second operand 3 states. [2020-12-22 10:08:33,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:33,143 INFO L93 Difference]: Finished difference Result 13223 states and 19372 transitions. [2020-12-22 10:08:33,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:33,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 10:08:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:33,170 INFO L225 Difference]: With dead ends: 13223 [2020-12-22 10:08:33,170 INFO L226 Difference]: Without dead ends: 10212 [2020-12-22 10:08:33,178 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 10:08:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10212 states. [2020-12-22 10:08:33,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10212 to 10210. [2020-12-22 10:08:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10210 states. [2020-12-22 10:08:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10210 states to 10210 states and 14856 transitions. [2020-12-22 10:08:33,973 INFO L78 Accepts]: Start accepts. Automaton has 10210 states and 14856 transitions. Word has length 81 [2020-12-22 10:08:33,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:33,974 INFO L481 AbstractCegarLoop]: Abstraction has 10210 states and 14856 transitions. [2020-12-22 10:08:33,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:33,974 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states and 14856 transitions. [2020-12-22 10:08:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:33,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:33,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:33,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:08:33,981 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:33,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:33,982 INFO L82 PathProgramCache]: Analyzing trace with hash 651816077, now seen corresponding path program 1 times [2020-12-22 10:08:33,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:33,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118689281] [2020-12-22 10:08:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:08:34,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118689281] [2020-12-22 10:08:34,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:34,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:34,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409616889] [2020-12-22 10:08:34,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:34,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:34,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:34,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:34,255 INFO L87 Difference]: Start difference. First operand 10210 states and 14856 transitions. Second operand 8 states. [2020-12-22 10:08:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:37,504 INFO L93 Difference]: Finished difference Result 59216 states and 85391 transitions. [2020-12-22 10:08:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:37,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:08:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:37,629 INFO L225 Difference]: With dead ends: 59216 [2020-12-22 10:08:37,629 INFO L226 Difference]: Without dead ends: 51310 [2020-12-22 10:08:37,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:08:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51310 states. [2020-12-22 10:08:39,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51310 to 18114. [2020-12-22 10:08:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18114 states. [2020-12-22 10:08:39,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 26152 transitions. [2020-12-22 10:08:39,383 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 26152 transitions. Word has length 111 [2020-12-22 10:08:39,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:39,384 INFO L481 AbstractCegarLoop]: Abstraction has 18114 states and 26152 transitions. [2020-12-22 10:08:39,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:39,384 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 26152 transitions. [2020-12-22 10:08:39,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:39,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:39,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:39,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:08:39,393 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:39,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:39,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1116966739, now seen corresponding path program 1 times [2020-12-22 10:08:39,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:39,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098757375] [2020-12-22 10:08:39,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:08:39,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098757375] [2020-12-22 10:08:39,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:39,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:39,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913362059] [2020-12-22 10:08:39,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:39,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:39,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:39,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:39,548 INFO L87 Difference]: Start difference. First operand 18114 states and 26152 transitions. Second operand 8 states. [2020-12-22 10:08:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:43,380 INFO L93 Difference]: Finished difference Result 67120 states and 96687 transitions. [2020-12-22 10:08:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:43,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:08:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:43,476 INFO L225 Difference]: With dead ends: 67120 [2020-12-22 10:08:43,476 INFO L226 Difference]: Without dead ends: 59214 [2020-12-22 10:08:43,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:08:43,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59214 states. [2020-12-22 10:08:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59214 to 29986. [2020-12-22 10:08:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29986 states. [2020-12-22 10:08:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29986 states to 29986 states and 43016 transitions. [2020-12-22 10:08:45,831 INFO L78 Accepts]: Start accepts. Automaton has 29986 states and 43016 transitions. Word has length 111 [2020-12-22 10:08:45,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:45,831 INFO L481 AbstractCegarLoop]: Abstraction has 29986 states and 43016 transitions. [2020-12-22 10:08:45,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 29986 states and 43016 transitions. [2020-12-22 10:08:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:45,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:45,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:45,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:08:45,840 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:45,841 INFO L82 PathProgramCache]: Analyzing trace with hash 14673101, now seen corresponding path program 1 times [2020-12-22 10:08:45,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:45,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013444178] [2020-12-22 10:08:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:08:45,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013444178] [2020-12-22 10:08:45,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:45,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:45,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845472886] [2020-12-22 10:08:45,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:45,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:45,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:45,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:45,984 INFO L87 Difference]: Start difference. First operand 29986 states and 43016 transitions. Second operand 8 states. [2020-12-22 10:08:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:50,618 INFO L93 Difference]: Finished difference Result 75024 states and 107983 transitions. [2020-12-22 10:08:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:50,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:08:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:50,721 INFO L225 Difference]: With dead ends: 75024 [2020-12-22 10:08:50,721 INFO L226 Difference]: Without dead ends: 67118 [2020-12-22 10:08:50,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:08:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67118 states. [2020-12-22 10:08:53,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67118 to 37890. [2020-12-22 10:08:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37890 states. [2020-12-22 10:08:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37890 states to 37890 states and 54312 transitions. [2020-12-22 10:08:54,027 INFO L78 Accepts]: Start accepts. Automaton has 37890 states and 54312 transitions. Word has length 111 [2020-12-22 10:08:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:54,027 INFO L481 AbstractCegarLoop]: Abstraction has 37890 states and 54312 transitions. [2020-12-22 10:08:54,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:54,027 INFO L276 IsEmpty]: Start isEmpty. Operand 37890 states and 54312 transitions. [2020-12-22 10:08:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:54,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:54,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:54,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:08:54,038 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:54,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:54,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1220785939, now seen corresponding path program 1 times [2020-12-22 10:08:54,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:54,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771792346] [2020-12-22 10:08:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 10:08:54,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771792346] [2020-12-22 10:08:54,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:54,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:54,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571468833] [2020-12-22 10:08:54,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:54,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:54,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:54,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:54,191 INFO L87 Difference]: Start difference. First operand 37890 states and 54312 transitions. Second operand 8 states. [2020-12-22 10:09:00,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:00,398 INFO L93 Difference]: Finished difference Result 82928 states and 119279 transitions. [2020-12-22 10:09:00,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:09:00,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:09:00,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:00,479 INFO L225 Difference]: With dead ends: 82928 [2020-12-22 10:09:00,479 INFO L226 Difference]: Without dead ends: 75022 [2020-12-22 10:09:00,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:09:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75022 states. [2020-12-22 10:09:04,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75022 to 45794. [2020-12-22 10:09:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45794 states. [2020-12-22 10:09:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45794 states to 45794 states and 65608 transitions. [2020-12-22 10:09:04,382 INFO L78 Accepts]: Start accepts. Automaton has 45794 states and 65608 transitions. Word has length 111 [2020-12-22 10:09:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:04,382 INFO L481 AbstractCegarLoop]: Abstraction has 45794 states and 65608 transitions. [2020-12-22 10:09:04,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:09:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 45794 states and 65608 transitions. [2020-12-22 10:09:04,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:09:04,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:04,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:04,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:09:04,393 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:04,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1653185805, now seen corresponding path program 1 times [2020-12-22 10:09:04,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:04,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128477449] [2020-12-22 10:09:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:09:04,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128477449] [2020-12-22 10:09:04,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:09:04,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:09:04,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092162352] [2020-12-22 10:09:04,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:09:04,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:04,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:09:04,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:09:04,535 INFO L87 Difference]: Start difference. First operand 45794 states and 65608 transitions. Second operand 8 states. [2020-12-22 10:09:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:10,744 INFO L93 Difference]: Finished difference Result 90832 states and 130575 transitions. [2020-12-22 10:09:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:09:10,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:09:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:10,846 INFO L225 Difference]: With dead ends: 90832 [2020-12-22 10:09:10,846 INFO L226 Difference]: Without dead ends: 82926 [2020-12-22 10:09:10,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:09:10,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82926 states. [2020-12-22 10:09:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82926 to 53698. [2020-12-22 10:09:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53698 states. [2020-12-22 10:09:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53698 states to 53698 states and 76904 transitions. [2020-12-22 10:09:15,340 INFO L78 Accepts]: Start accepts. Automaton has 53698 states and 76904 transitions. Word has length 111 [2020-12-22 10:09:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:15,340 INFO L481 AbstractCegarLoop]: Abstraction has 53698 states and 76904 transitions. [2020-12-22 10:09:15,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:09:15,340 INFO L276 IsEmpty]: Start isEmpty. Operand 53698 states and 76904 transitions. [2020-12-22 10:09:15,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:09:15,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:15,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:15,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:09:15,355 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:15,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:15,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2019174363, now seen corresponding path program 1 times [2020-12-22 10:09:15,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:15,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575896731] [2020-12-22 10:09:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:09:15,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575896731] [2020-12-22 10:09:15,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:09:15,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:09:15,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880027812] [2020-12-22 10:09:15,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:09:15,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:15,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:09:15,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:09:15,445 INFO L87 Difference]: Start difference. First operand 53698 states and 76904 transitions. Second operand 3 states. [2020-12-22 10:09:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:18,969 INFO L93 Difference]: Finished difference Result 89511 states and 128529 transitions. [2020-12-22 10:09:18,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:09:18,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:09:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:19,004 INFO L225 Difference]: With dead ends: 89511 [2020-12-22 10:09:19,009 INFO L226 Difference]: Without dead ends: 38117 [2020-12-22 10:09:19,034 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 10:09:19,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38117 states. [2020-12-22 10:09:21,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38117 to 38115. [2020-12-22 10:09:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38115 states. [2020-12-22 10:09:22,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38115 states to 38115 states and 54670 transitions. [2020-12-22 10:09:22,041 INFO L78 Accepts]: Start accepts. Automaton has 38115 states and 54670 transitions. Word has length 113 [2020-12-22 10:09:22,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:22,041 INFO L481 AbstractCegarLoop]: Abstraction has 38115 states and 54670 transitions. [2020-12-22 10:09:22,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:09:22,042 INFO L276 IsEmpty]: Start isEmpty. Operand 38115 states and 54670 transitions. [2020-12-22 10:09:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:09:22,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:22,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:22,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:09:22,050 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:22,051 INFO L82 PathProgramCache]: Analyzing trace with hash -21629902, now seen corresponding path program 1 times [2020-12-22 10:09:22,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:22,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439722329] [2020-12-22 10:09:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:09:22,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439722329] [2020-12-22 10:09:22,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:09:22,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:09:22,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655762589] [2020-12-22 10:09:22,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:09:22,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:22,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:09:22,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:09:22,190 INFO L87 Difference]: Start difference. First operand 38115 states and 54670 transitions. Second operand 8 states. [2020-12-22 10:09:27,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:27,776 INFO L93 Difference]: Finished difference Result 71153 states and 102293 transitions. [2020-12-22 10:09:27,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:09:27,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-12-22 10:09:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:27,846 INFO L225 Difference]: With dead ends: 71153 [2020-12-22 10:09:27,846 INFO L226 Difference]: Without dead ends: 65647 [2020-12-22 10:09:27,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:09:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65647 states. [2020-12-22 10:09:31,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65647 to 43619. [2020-12-22 10:09:31,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43619 states. [2020-12-22 10:09:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43619 states to 43619 states and 62542 transitions. [2020-12-22 10:09:31,586 INFO L78 Accepts]: Start accepts. Automaton has 43619 states and 62542 transitions. Word has length 113 [2020-12-22 10:09:31,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:31,586 INFO L481 AbstractCegarLoop]: Abstraction has 43619 states and 62542 transitions. [2020-12-22 10:09:31,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:09:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand 43619 states and 62542 transitions. [2020-12-22 10:09:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:09:31,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:31,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:31,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:09:31,595 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:31,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:31,596 INFO L82 PathProgramCache]: Analyzing trace with hash 254785081, now seen corresponding path program 1 times [2020-12-22 10:09:31,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:31,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707824865] [2020-12-22 10:09:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:09:31,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707824865] [2020-12-22 10:09:31,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276432036] [2020-12-22 10:09:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 10:09:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:32,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 10:09:32,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:09:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:09:32,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:09:32,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 16 [2020-12-22 10:09:32,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032902857] [2020-12-22 10:09:32,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 10:09:32,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:32,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 10:09:32,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:09:32,683 INFO L87 Difference]: Start difference. First operand 43619 states and 62542 transitions. Second operand 16 states. [2020-12-22 10:09:33,675 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:09:34,259 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 10:09:38,275 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:09:38,497 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 10:09:46,022 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-12-22 10:09:47,077 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 10:10:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:03,512 INFO L93 Difference]: Finished difference Result 309560 states and 436777 transitions. [2020-12-22 10:10:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-22 10:10:03,514 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 114 [2020-12-22 10:10:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:04,262 INFO L225 Difference]: With dead ends: 309560 [2020-12-22 10:10:04,262 INFO L226 Difference]: Without dead ends: 268278 [2020-12-22 10:10:04,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1154, Invalid=5008, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 10:10:04,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268278 states. [2020-12-22 10:10:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268278 to 135312. [2020-12-22 10:10:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135312 states. [2020-12-22 10:10:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135312 states to 135312 states and 188780 transitions. [2020-12-22 10:10:20,348 INFO L78 Accepts]: Start accepts. Automaton has 135312 states and 188780 transitions. Word has length 114 [2020-12-22 10:10:20,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:20,348 INFO L481 AbstractCegarLoop]: Abstraction has 135312 states and 188780 transitions. [2020-12-22 10:10:20,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 10:10:20,349 INFO L276 IsEmpty]: Start isEmpty. Operand 135312 states and 188780 transitions. [2020-12-22 10:10:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 10:10:20,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:20,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:20,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 10:10:20,569 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:20,570 INFO L82 PathProgramCache]: Analyzing trace with hash -725866966, now seen corresponding path program 1 times [2020-12-22 10:10:20,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:20,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252824947] [2020-12-22 10:10:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:21,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252824947] [2020-12-22 10:10:21,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305465658] [2020-12-22 10:10:21,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 10:10:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:21,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 10:10:21,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:10:21,456 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 10:10:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:21,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:10:21,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 10:10:21,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230190941] [2020-12-22 10:10:21,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 10:10:21,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:21,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 10:10:21,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 10:10:21,846 INFO L87 Difference]: Start difference. First operand 135312 states and 188780 transitions. Second operand 22 states. [2020-12-22 10:10:21,981 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:22,800 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-12-22 10:10:24,102 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 10:10:24,363 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:24,545 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:10:24,785 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:10:25,086 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:10:25,804 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:25,999 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:10:26,484 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 10:10:26,782 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:10:28,790 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:29,674 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:29,944 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:31,239 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:31,386 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:31,550 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:32,822 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:33,933 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:10:34,331 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:10:35,814 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:36,555 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:36,796 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:37,357 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:37,998 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:38,942 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:10:39,082 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:10:39,253 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:10:40,719 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:42,036 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:42,535 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:43,201 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:43,750 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:10:44,356 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:51,871 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:10:52,200 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:10:52,531 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:10:52,702 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:10:52,938 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:10:53,235 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:10:53,395 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:53,622 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-22 10:10:54,172 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 10:10:54,341 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:54,560 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:10:54,735 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:54,962 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:10:55,188 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:10:55,473 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-22 10:10:55,612 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:55,823 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:10:56,008 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:10:56,257 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:10:56,479 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:10:57,542 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:10:57,714 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:57,981 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:10:58,134 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:58,662 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-22 10:10:59,541 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-12-22 10:10:59,699 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:59,904 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:00,214 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:11:00,351 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:00,518 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:16,157 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:16,347 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:16,749 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:11:16,915 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:17,130 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:11:17,353 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:18,604 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:11:18,905 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:19,083 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:19,226 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:11:19,465 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:19,663 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:11:20,059 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:20,734 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:11:20,899 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:21,039 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 10:11:21,247 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:11:22,756 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 10:11:22,987 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:11:23,310 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:11:23,758 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:24,076 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:24,741 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:27,517 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45