/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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:07:58,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:07:58,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:07:58,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:07:58,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:07:58,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:07:58,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:07:58,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:07:58,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:07:58,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:07:58,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:07:58,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:07:58,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:07:58,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:07:58,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:07:58,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:07:58,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:07:58,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:07:58,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:07:58,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:07:58,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:07:58,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:07:58,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:07:58,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:07:58,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:07:58,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:07:58,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:07:58,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:07:58,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:07:58,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:07:58,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:07:58,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:07:58,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:07:58,947 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:07:58,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:07:58,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:07:58,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:07:58,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:07:58,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:07:58,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:07:58,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:07:58,948 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:07:58,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:07:58,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:07:58,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:07:58,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:07:58,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:07:58,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:07:58,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:07:58,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:07:58,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:07:58,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:07:58,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:07:58,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:07:58,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:07:59,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:07:59,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:07:59,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:07:59,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:07:59,451 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:07:59,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c [2020-12-22 10:07:59,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716175e19/9a12592c66fd49a08c424809af433dcd/FLAG43cc4564f [2020-12-22 10:08:00,643 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:08:00,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c [2020-12-22 10:08:00,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716175e19/9a12592c66fd49a08c424809af433dcd/FLAG43cc4564f [2020-12-22 10:08:01,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716175e19/9a12592c66fd49a08c424809af433dcd [2020-12-22 10:08:01,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:08:01,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:08:01,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:08:01,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:08:01,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:08:01,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:08:01" (1/1) ... [2020-12-22 10:08:01,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35edcd8a 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 10:08:01,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:08:01" (1/1) ... [2020-12-22 10:08:01,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:08:01,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:08:01,687 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_label07.c[15614,15627] [2020-12-22 10:08:01,707 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_label07.c[16213,16226] [2020-12-22 10:08:02,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:08:02,751 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:08:02,833 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_label07.c[15614,15627] [2020-12-22 10:08:02,835 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_label07.c[16213,16226] [2020-12-22 10:08:03,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:08:03,550 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:08:03,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03 WrapperNode [2020-12-22 10:08:03,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:08:03,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:08:03,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:08:03,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:08:03,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:03,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:08:04,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:08:04,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:08:04,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:08:04,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:05,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:08:05,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:08:05,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:08:05,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:08:05,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (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 10:08:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:08:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:08:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:08:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:08:10,890 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:08:10,891 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2020-12-22 10:08:10,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:08:10 BoogieIcfgContainer [2020-12-22 10:08:10,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:08:10,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:08:10,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:08:10,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:08:10,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:08:01" (1/3) ... [2020-12-22 10:08:10,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f76c044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:08:10, skipping insertion in model container [2020-12-22 10:08:10,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (2/3) ... [2020-12-22 10:08:10,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f76c044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:08:10, skipping insertion in model container [2020-12-22 10:08:10,910 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 10:08:10,912 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label07.c [2020-12-22 10:08:10,920 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:08:10,927 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:08:10,952 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:08:10,990 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:08:10,991 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:08:10,991 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:08:10,991 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:08:10,991 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:08:10,991 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:08:10,992 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:08:10,992 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:08:11,027 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states. [2020-12-22 10:08:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 10:08:11,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:11,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:11,035 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:11,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:11,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2000286550, now seen corresponding path program 1 times [2020-12-22 10:08:11,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:11,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592194909] [2020-12-22 10:08:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:11,304 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 10:08:11,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592194909] [2020-12-22 10:08:11,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:11,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:08:11,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74941939] [2020-12-22 10:08:11,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:11,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:11,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:11,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:11,334 INFO L87 Difference]: Start difference. First operand 927 states. Second operand 3 states. [2020-12-22 10:08:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:17,818 INFO L93 Difference]: Finished difference Result 2561 states and 4922 transitions. [2020-12-22 10:08:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:17,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 10:08:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:17,860 INFO L225 Difference]: With dead ends: 2561 [2020-12-22 10:08:17,861 INFO L226 Difference]: Without dead ends: 1612 [2020-12-22 10:08:17,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:08:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2020-12-22 10:08:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2020-12-22 10:08:18,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2020-12-22 10:08:18,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2997 transitions. [2020-12-22 10:08:18,031 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2997 transitions. Word has length 7 [2020-12-22 10:08:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:18,032 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2997 transitions. [2020-12-22 10:08:18,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2997 transitions. [2020-12-22 10:08:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:08:18,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:18,037 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 10:08:18,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:08:18,038 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2020-12-22 10:08:18,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:18,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722625552] [2020-12-22 10:08:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:18,317 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 10:08:18,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722625552] [2020-12-22 10:08:18,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:18,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:08:18,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993696642] [2020-12-22 10:08:18,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:08:18,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:18,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:08:18,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:08:18,328 INFO L87 Difference]: Start difference. First operand 1612 states and 2997 transitions. Second operand 5 states. [2020-12-22 10:08:18,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:18,503 INFO L93 Difference]: Finished difference Result 1677 states and 3098 transitions. [2020-12-22 10:08:18,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:08:18,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 10:08:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:18,517 INFO L225 Difference]: With dead ends: 1677 [2020-12-22 10:08:18,518 INFO L226 Difference]: Without dead ends: 1612 [2020-12-22 10:08:18,524 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 10:08:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2020-12-22 10:08:18,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2020-12-22 10:08:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2020-12-22 10:08:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2957 transitions. [2020-12-22 10:08:18,596 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2957 transitions. Word has length 38 [2020-12-22 10:08:18,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:18,596 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2957 transitions. [2020-12-22 10:08:18,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:08:18,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2957 transitions. [2020-12-22 10:08:18,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:18,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:18,611 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 10:08:18,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:08:18,612 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:18,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2020-12-22 10:08:18,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:18,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925452680] [2020-12-22 10:08:18,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:19,041 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 10:08:19,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925452680] [2020-12-22 10:08:19,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:19,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:19,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84024185] [2020-12-22 10:08:19,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:19,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:19,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:19,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:19,060 INFO L87 Difference]: Start difference. First operand 1612 states and 2957 transitions. Second operand 3 states. [2020-12-22 10:08:19,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:19,118 INFO L93 Difference]: Finished difference Result 1728 states and 3141 transitions. [2020-12-22 10:08:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:19,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:19,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:19,134 INFO L225 Difference]: With dead ends: 1728 [2020-12-22 10:08:19,136 INFO L226 Difference]: Without dead ends: 1667 [2020-12-22 10:08:19,138 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 10:08:19,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-12-22 10:08:19,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2020-12-22 10:08:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1665 states. [2020-12-22 10:08:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 3042 transitions. [2020-12-22 10:08:19,222 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 3042 transitions. Word has length 77 [2020-12-22 10:08:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:19,223 INFO L481 AbstractCegarLoop]: Abstraction has 1665 states and 3042 transitions. [2020-12-22 10:08:19,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 3042 transitions. [2020-12-22 10:08:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:19,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:19,230 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 10:08:19,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:08:19,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:19,231 INFO L82 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2020-12-22 10:08:19,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:19,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155915379] [2020-12-22 10:08:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:19,416 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 10:08:19,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155915379] [2020-12-22 10:08:19,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:19,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:19,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878574655] [2020-12-22 10:08:19,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:19,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:19,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:19,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:19,425 INFO L87 Difference]: Start difference. First operand 1665 states and 3042 transitions. Second operand 3 states. [2020-12-22 10:08:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:19,487 INFO L93 Difference]: Finished difference Result 1881 states and 3386 transitions. [2020-12-22 10:08:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:19,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:19,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:19,501 INFO L225 Difference]: With dead ends: 1881 [2020-12-22 10:08:19,501 INFO L226 Difference]: Without dead ends: 1767 [2020-12-22 10:08:19,503 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 10:08:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-12-22 10:08:19,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1765. [2020-12-22 10:08:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2020-12-22 10:08:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 3201 transitions. [2020-12-22 10:08:19,582 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 3201 transitions. Word has length 77 [2020-12-22 10:08:19,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:19,585 INFO L481 AbstractCegarLoop]: Abstraction has 1765 states and 3201 transitions. [2020-12-22 10:08:19,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:19,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 3201 transitions. [2020-12-22 10:08:19,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:19,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:19,588 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 10:08:19,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:08:19,589 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:19,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2020-12-22 10:08:19,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:19,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579935736] [2020-12-22 10:08:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:19,731 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 10:08:19,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579935736] [2020-12-22 10:08:19,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:19,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:19,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807731077] [2020-12-22 10:08:19,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:19,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:19,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:19,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:19,736 INFO L87 Difference]: Start difference. First operand 1765 states and 3201 transitions. Second operand 3 states. [2020-12-22 10:08:19,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:19,807 INFO L93 Difference]: Finished difference Result 2169 states and 3843 transitions. [2020-12-22 10:08:19,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:19,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:19,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:19,825 INFO L225 Difference]: With dead ends: 2169 [2020-12-22 10:08:19,825 INFO L226 Difference]: Without dead ends: 1955 [2020-12-22 10:08:19,827 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 10:08:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2020-12-22 10:08:19,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1953. [2020-12-22 10:08:19,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1953 states. [2020-12-22 10:08:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3497 transitions. [2020-12-22 10:08:19,902 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3497 transitions. Word has length 77 [2020-12-22 10:08:19,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:19,905 INFO L481 AbstractCegarLoop]: Abstraction has 1953 states and 3497 transitions. [2020-12-22 10:08:19,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:19,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3497 transitions. [2020-12-22 10:08:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:19,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:19,906 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 10:08:19,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:08:19,907 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2020-12-22 10:08:19,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:19,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522080885] [2020-12-22 10:08:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:20,003 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 10:08:20,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522080885] [2020-12-22 10:08:20,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:20,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:20,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340673030] [2020-12-22 10:08:20,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:20,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:20,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:20,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:20,007 INFO L87 Difference]: Start difference. First operand 1953 states and 3497 transitions. Second operand 3 states. [2020-12-22 10:08:20,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:20,078 INFO L93 Difference]: Finished difference Result 2709 states and 4691 transitions. [2020-12-22 10:08:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:20,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:20,094 INFO L225 Difference]: With dead ends: 2709 [2020-12-22 10:08:20,094 INFO L226 Difference]: Without dead ends: 2307 [2020-12-22 10:08:20,096 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 10:08:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2020-12-22 10:08:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2305. [2020-12-22 10:08:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-12-22 10:08:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 4045 transitions. [2020-12-22 10:08:20,185 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 4045 transitions. Word has length 77 [2020-12-22 10:08:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:20,186 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 4045 transitions. [2020-12-22 10:08:20,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 4045 transitions. [2020-12-22 10:08:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:20,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:20,187 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 10:08:20,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:08:20,188 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:20,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2020-12-22 10:08:20,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:20,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488305501] [2020-12-22 10:08:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:20,320 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 10:08:20,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488305501] [2020-12-22 10:08:20,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:20,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:20,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308587075] [2020-12-22 10:08:20,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:20,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:20,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:20,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:20,323 INFO L87 Difference]: Start difference. First operand 2305 states and 4045 transitions. Second operand 3 states. [2020-12-22 10:08:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:20,422 INFO L93 Difference]: Finished difference Result 3717 states and 6255 transitions. [2020-12-22 10:08:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:20,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:20,440 INFO L225 Difference]: With dead ends: 3717 [2020-12-22 10:08:20,441 INFO L226 Difference]: Without dead ends: 2963 [2020-12-22 10:08:20,444 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 10:08:20,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-12-22 10:08:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2961. [2020-12-22 10:08:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2020-12-22 10:08:20,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 5053 transitions. [2020-12-22 10:08:20,568 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 5053 transitions. Word has length 77 [2020-12-22 10:08:20,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:20,570 INFO L481 AbstractCegarLoop]: Abstraction has 2961 states and 5053 transitions. [2020-12-22 10:08:20,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:20,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 5053 transitions. [2020-12-22 10:08:20,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:20,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:20,579 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 10:08:20,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:08:20,579 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:20,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:20,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2020-12-22 10:08:20,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:20,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803739780] [2020-12-22 10:08:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:20,733 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 10:08:20,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803739780] [2020-12-22 10:08:20,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:20,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:20,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786766896] [2020-12-22 10:08:20,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:20,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:20,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:20,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:20,736 INFO L87 Difference]: Start difference. First operand 2961 states and 5053 transitions. Second operand 8 states. [2020-12-22 10:08:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:21,921 INFO L93 Difference]: Finished difference Result 19881 states and 31369 transitions. [2020-12-22 10:08:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 10:08:21,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-12-22 10:08:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:22,022 INFO L225 Difference]: With dead ends: 19881 [2020-12-22 10:08:22,023 INFO L226 Difference]: Without dead ends: 18471 [2020-12-22 10:08:22,033 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 10:08:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18471 states. [2020-12-22 10:08:22,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18471 to 4369. [2020-12-22 10:08:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4369 states. [2020-12-22 10:08:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 7181 transitions. [2020-12-22 10:08:22,470 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 7181 transitions. Word has length 77 [2020-12-22 10:08:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:22,471 INFO L481 AbstractCegarLoop]: Abstraction has 4369 states and 7181 transitions. [2020-12-22 10:08:22,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 7181 transitions. [2020-12-22 10:08:22,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:08:22,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:22,472 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 10:08:22,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:08:22,475 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:22,476 INFO L82 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2020-12-22 10:08:22,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:22,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094611563] [2020-12-22 10:08:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:22,570 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 10:08:22,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094611563] [2020-12-22 10:08:22,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:22,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:22,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351079682] [2020-12-22 10:08:22,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:22,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:22,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:22,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:22,575 INFO L87 Difference]: Start difference. First operand 4369 states and 7181 transitions. Second operand 3 states. [2020-12-22 10:08:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:22,941 INFO L93 Difference]: Finished difference Result 9653 states and 15215 transitions. [2020-12-22 10:08:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:22,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:08:22,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:22,961 INFO L225 Difference]: With dead ends: 9653 [2020-12-22 10:08:22,961 INFO L226 Difference]: Without dead ends: 6835 [2020-12-22 10:08:22,969 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 10:08:22,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2020-12-22 10:08:23,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6769. [2020-12-22 10:08:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:08:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10669 transitions. [2020-12-22 10:08:23,419 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10669 transitions. Word has length 79 [2020-12-22 10:08:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:23,420 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10669 transitions. [2020-12-22 10:08:23,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10669 transitions. [2020-12-22 10:08:23,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:08:23,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:23,421 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 10:08:23,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:08:23,422 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:23,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:23,422 INFO L82 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2020-12-22 10:08:23,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:23,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435025499] [2020-12-22 10:08:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:23,740 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 10:08:23,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435025499] [2020-12-22 10:08:23,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:23,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:23,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112812222] [2020-12-22 10:08:23,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:23,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:23,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:23,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:23,747 INFO L87 Difference]: Start difference. First operand 6769 states and 10669 transitions. Second operand 8 states. [2020-12-22 10:08:24,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:24,478 INFO L93 Difference]: Finished difference Result 11989 states and 18479 transitions. [2020-12-22 10:08:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:24,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 10:08:24,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:24,501 INFO L225 Difference]: With dead ends: 11989 [2020-12-22 10:08:24,501 INFO L226 Difference]: Without dead ends: 6771 [2020-12-22 10:08:24,513 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 10:08:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2020-12-22 10:08:24,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6769. [2020-12-22 10:08:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:08:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10605 transitions. [2020-12-22 10:08:24,930 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10605 transitions. Word has length 79 [2020-12-22 10:08:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:24,930 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10605 transitions. [2020-12-22 10:08:24,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10605 transitions. [2020-12-22 10:08:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:08:24,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:24,933 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 10:08:24,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:08:24,933 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:24,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:24,934 INFO L82 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2020-12-22 10:08:24,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:24,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377118327] [2020-12-22 10:08:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:25,068 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 10:08:25,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377118327] [2020-12-22 10:08:25,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:25,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:08:25,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294463711] [2020-12-22 10:08:25,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:08:25,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:25,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:08:25,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:08:25,071 INFO L87 Difference]: Start difference. First operand 6769 states and 10605 transitions. Second operand 6 states. [2020-12-22 10:08:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:25,628 INFO L93 Difference]: Finished difference Result 11987 states and 18350 transitions. [2020-12-22 10:08:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:08:25,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 10:08:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:25,645 INFO L225 Difference]: With dead ends: 11987 [2020-12-22 10:08:25,646 INFO L226 Difference]: Without dead ends: 6769 [2020-12-22 10:08:25,654 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 10:08:25,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2020-12-22 10:08:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 6769. [2020-12-22 10:08:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:08:26,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10541 transitions. [2020-12-22 10:08:26,185 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10541 transitions. Word has length 80 [2020-12-22 10:08:26,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:26,186 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10541 transitions. [2020-12-22 10:08:26,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:08:26,186 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10541 transitions. [2020-12-22 10:08:26,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:08:26,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:26,187 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 10:08:26,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:08:26,188 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:26,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:26,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2020-12-22 10:08:26,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:26,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109372003] [2020-12-22 10:08:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:26,330 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 10:08:26,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109372003] [2020-12-22 10:08:26,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:26,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:26,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428521355] [2020-12-22 10:08:26,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:26,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:26,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:26,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:26,332 INFO L87 Difference]: Start difference. First operand 6769 states and 10541 transitions. Second operand 8 states. [2020-12-22 10:08:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:27,266 INFO L93 Difference]: Finished difference Result 10675 states and 16184 transitions. [2020-12-22 10:08:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:08:27,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 10:08:27,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:27,292 INFO L225 Difference]: With dead ends: 10675 [2020-12-22 10:08:27,292 INFO L226 Difference]: Without dead ends: 10673 [2020-12-22 10:08:27,298 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 10:08:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10673 states. [2020-12-22 10:08:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10673 to 6961. [2020-12-22 10:08:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6961 states. [2020-12-22 10:08:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6961 states to 6961 states and 10701 transitions. [2020-12-22 10:08:27,985 INFO L78 Accepts]: Start accepts. Automaton has 6961 states and 10701 transitions. Word has length 80 [2020-12-22 10:08:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:27,986 INFO L481 AbstractCegarLoop]: Abstraction has 6961 states and 10701 transitions. [2020-12-22 10:08:27,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 6961 states and 10701 transitions. [2020-12-22 10:08:27,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:08:27,987 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:27,988 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:08:27,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:08:27,988 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:27,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:27,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1355026024, now seen corresponding path program 1 times [2020-12-22 10:08:27,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:27,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836344352] [2020-12-22 10:08:27,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:08:28,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836344352] [2020-12-22 10:08:28,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:28,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:28,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238701752] [2020-12-22 10:08:28,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:08:28,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:28,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:08:28,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:08:28,092 INFO L87 Difference]: Start difference. First operand 6961 states and 10701 transitions. Second operand 4 states. [2020-12-22 10:08:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:38,461 INFO L93 Difference]: Finished difference Result 10726 states and 17707 transitions. [2020-12-22 10:08:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:08:38,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 10:08:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:38,482 INFO L225 Difference]: With dead ends: 10726 [2020-12-22 10:08:38,483 INFO L226 Difference]: Without dead ends: 9222 [2020-12-22 10:08:38,488 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 10:08:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9222 states. [2020-12-22 10:08:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9222 to 9214. [2020-12-22 10:08:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9214 states. [2020-12-22 10:08:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9214 states to 9214 states and 13945 transitions. [2020-12-22 10:08:39,070 INFO L78 Accepts]: Start accepts. Automaton has 9214 states and 13945 transitions. Word has length 80 [2020-12-22 10:08:39,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:39,070 INFO L481 AbstractCegarLoop]: Abstraction has 9214 states and 13945 transitions. [2020-12-22 10:08:39,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:08:39,070 INFO L276 IsEmpty]: Start isEmpty. Operand 9214 states and 13945 transitions. [2020-12-22 10:08:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 10:08:39,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:39,072 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 10:08:39,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:08:39,072 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:39,073 INFO L82 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2020-12-22 10:08:39,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:39,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167669904] [2020-12-22 10:08:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:39,129 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 10:08:39,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167669904] [2020-12-22 10:08:39,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:39,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:39,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975092278] [2020-12-22 10:08:39,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:39,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:39,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:39,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:39,133 INFO L87 Difference]: Start difference. First operand 9214 states and 13945 transitions. Second operand 3 states. [2020-12-22 10:08:39,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:39,797 INFO L93 Difference]: Finished difference Result 14725 states and 22015 transitions. [2020-12-22 10:08:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:39,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 10:08:39,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:39,828 INFO L225 Difference]: With dead ends: 14725 [2020-12-22 10:08:39,829 INFO L226 Difference]: Without dead ends: 11714 [2020-12-22 10:08:39,839 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 10:08:39,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11714 states. [2020-12-22 10:08:40,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11714 to 11712. [2020-12-22 10:08:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11712 states. [2020-12-22 10:08:40,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11712 states to 11712 states and 17499 transitions. [2020-12-22 10:08:40,597 INFO L78 Accepts]: Start accepts. Automaton has 11712 states and 17499 transitions. Word has length 81 [2020-12-22 10:08:40,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:40,597 INFO L481 AbstractCegarLoop]: Abstraction has 11712 states and 17499 transitions. [2020-12-22 10:08:40,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:40,598 INFO L276 IsEmpty]: Start isEmpty. Operand 11712 states and 17499 transitions. [2020-12-22 10:08:40,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:40,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:40,606 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 10:08:40,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:08:40,607 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:40,607 INFO L82 PathProgramCache]: Analyzing trace with hash 651816077, now seen corresponding path program 1 times [2020-12-22 10:08:40,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:40,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876851066] [2020-12-22 10:08:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:40,762 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 10:08:40,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876851066] [2020-12-22 10:08:40,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:40,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:40,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920888571] [2020-12-22 10:08:40,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:40,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:40,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:40,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:40,765 INFO L87 Difference]: Start difference. First operand 11712 states and 17499 transitions. Second operand 8 states. [2020-12-22 10:08:43,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:43,527 INFO L93 Difference]: Finished difference Result 60718 states and 88034 transitions. [2020-12-22 10:08:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:43,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:08:43,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:43,653 INFO L225 Difference]: With dead ends: 60718 [2020-12-22 10:08:43,653 INFO L226 Difference]: Without dead ends: 52812 [2020-12-22 10:08:43,676 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 10:08:43,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52812 states. [2020-12-22 10:08:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52812 to 19616. [2020-12-22 10:08:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19616 states. [2020-12-22 10:08:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19616 states to 19616 states and 28795 transitions. [2020-12-22 10:08:45,363 INFO L78 Accepts]: Start accepts. Automaton has 19616 states and 28795 transitions. Word has length 111 [2020-12-22 10:08:45,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:45,363 INFO L481 AbstractCegarLoop]: Abstraction has 19616 states and 28795 transitions. [2020-12-22 10:08:45,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 19616 states and 28795 transitions. [2020-12-22 10:08:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:45,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:45,371 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 10:08:45,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:08:45,372 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:45,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:45,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1116966739, now seen corresponding path program 1 times [2020-12-22 10:08:45,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:45,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350984995] [2020-12-22 10:08:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:45,531 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 10:08:45,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350984995] [2020-12-22 10:08:45,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:45,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:45,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961028087] [2020-12-22 10:08:45,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:45,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:45,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:45,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:45,535 INFO L87 Difference]: Start difference. First operand 19616 states and 28795 transitions. Second operand 8 states. [2020-12-22 10:08:49,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:49,385 INFO L93 Difference]: Finished difference Result 68622 states and 99330 transitions. [2020-12-22 10:08:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:49,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:08:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:49,483 INFO L225 Difference]: With dead ends: 68622 [2020-12-22 10:08:49,483 INFO L226 Difference]: Without dead ends: 60716 [2020-12-22 10:08:49,506 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 10:08:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60716 states. [2020-12-22 10:08:52,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60716 to 31488. [2020-12-22 10:08:52,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31488 states. [2020-12-22 10:08:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31488 states to 31488 states and 45659 transitions. [2020-12-22 10:08:52,099 INFO L78 Accepts]: Start accepts. Automaton has 31488 states and 45659 transitions. Word has length 111 [2020-12-22 10:08:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:52,100 INFO L481 AbstractCegarLoop]: Abstraction has 31488 states and 45659 transitions. [2020-12-22 10:08:52,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 31488 states and 45659 transitions. [2020-12-22 10:08:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:52,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:52,109 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 10:08:52,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:08:52,109 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:52,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:52,110 INFO L82 PathProgramCache]: Analyzing trace with hash 14673101, now seen corresponding path program 1 times [2020-12-22 10:08:52,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:52,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449702088] [2020-12-22 10:08:52,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:52,280 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 10:08:52,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449702088] [2020-12-22 10:08:52,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:52,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:52,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745074635] [2020-12-22 10:08:52,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:52,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:52,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:52,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:52,284 INFO L87 Difference]: Start difference. First operand 31488 states and 45659 transitions. Second operand 8 states. [2020-12-22 10:08:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:56,688 INFO L93 Difference]: Finished difference Result 76526 states and 110626 transitions. [2020-12-22 10:08:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:56,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:08:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:56,783 INFO L225 Difference]: With dead ends: 76526 [2020-12-22 10:08:56,783 INFO L226 Difference]: Without dead ends: 68620 [2020-12-22 10:08:56,807 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 10:08:56,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68620 states. [2020-12-22 10:09:00,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68620 to 39392. [2020-12-22 10:09:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39392 states. [2020-12-22 10:09:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39392 states to 39392 states and 56955 transitions. [2020-12-22 10:09:00,149 INFO L78 Accepts]: Start accepts. Automaton has 39392 states and 56955 transitions. Word has length 111 [2020-12-22 10:09:00,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:00,149 INFO L481 AbstractCegarLoop]: Abstraction has 39392 states and 56955 transitions. [2020-12-22 10:09:00,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:09:00,149 INFO L276 IsEmpty]: Start isEmpty. Operand 39392 states and 56955 transitions. [2020-12-22 10:09:00,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:09:00,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:00,159 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 10:09:00,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:09:00,160 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:00,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:00,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1220785939, now seen corresponding path program 1 times [2020-12-22 10:09:00,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:00,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428350004] [2020-12-22 10:09:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:00,302 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 10:09:00,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428350004] [2020-12-22 10:09:00,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:09:00,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:09:00,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418892683] [2020-12-22 10:09:00,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:09:00,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:00,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:09:00,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:09:00,309 INFO L87 Difference]: Start difference. First operand 39392 states and 56955 transitions. Second operand 8 states. [2020-12-22 10:09:05,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:05,775 INFO L93 Difference]: Finished difference Result 84430 states and 121922 transitions. [2020-12-22 10:09:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:09:05,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:09:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:05,852 INFO L225 Difference]: With dead ends: 84430 [2020-12-22 10:09:05,853 INFO L226 Difference]: Without dead ends: 76524 [2020-12-22 10:09:05,875 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 10:09:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76524 states. [2020-12-22 10:09:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76524 to 47296. [2020-12-22 10:09:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47296 states. [2020-12-22 10:09:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47296 states to 47296 states and 68251 transitions. [2020-12-22 10:09:09,641 INFO L78 Accepts]: Start accepts. Automaton has 47296 states and 68251 transitions. Word has length 111 [2020-12-22 10:09:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:09,641 INFO L481 AbstractCegarLoop]: Abstraction has 47296 states and 68251 transitions. [2020-12-22 10:09:09,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:09:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 47296 states and 68251 transitions. [2020-12-22 10:09:09,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:09:09,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:09,653 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 10:09:09,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:09:09,653 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:09,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:09,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1653185805, now seen corresponding path program 1 times [2020-12-22 10:09:09,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:09,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492147743] [2020-12-22 10:09:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:09,802 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 10:09:09,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492147743] [2020-12-22 10:09:09,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:09:09,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:09:09,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290450350] [2020-12-22 10:09:09,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:09:09,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:09,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:09:09,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:09:09,804 INFO L87 Difference]: Start difference. First operand 47296 states and 68251 transitions. Second operand 8 states. [2020-12-22 10:09:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:16,497 INFO L93 Difference]: Finished difference Result 92334 states and 133218 transitions. [2020-12-22 10:09:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:09:16,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:09:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:16,588 INFO L225 Difference]: With dead ends: 92334 [2020-12-22 10:09:16,588 INFO L226 Difference]: Without dead ends: 84428 [2020-12-22 10:09:16,608 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 10:09:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84428 states. [2020-12-22 10:09:21,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84428 to 55200. [2020-12-22 10:09:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55200 states. [2020-12-22 10:09:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55200 states to 55200 states and 79547 transitions. [2020-12-22 10:09:21,277 INFO L78 Accepts]: Start accepts. Automaton has 55200 states and 79547 transitions. Word has length 111 [2020-12-22 10:09:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:21,277 INFO L481 AbstractCegarLoop]: Abstraction has 55200 states and 79547 transitions. [2020-12-22 10:09:21,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:09:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 55200 states and 79547 transitions. [2020-12-22 10:09:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:09:21,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:21,290 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 10:09:21,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:09:21,290 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:21,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:21,291 INFO L82 PathProgramCache]: Analyzing trace with hash -2019174363, now seen corresponding path program 1 times [2020-12-22 10:09:21,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:21,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848749479] [2020-12-22 10:09:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:21,361 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 10:09:21,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848749479] [2020-12-22 10:09:21,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:09:21,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:09:21,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738146051] [2020-12-22 10:09:21,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:09:21,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:21,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:09:21,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:09:21,364 INFO L87 Difference]: Start difference. First operand 55200 states and 79547 transitions. Second operand 3 states. [2020-12-22 10:09:24,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:24,584 INFO L93 Difference]: Finished difference Result 91013 states and 131172 transitions. [2020-12-22 10:09:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:09:24,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:09:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:24,626 INFO L225 Difference]: With dead ends: 91013 [2020-12-22 10:09:24,626 INFO L226 Difference]: Without dead ends: 39619 [2020-12-22 10:09:24,654 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 10:09:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39619 states. [2020-12-22 10:09:27,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39619 to 39617. [2020-12-22 10:09:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39617 states. [2020-12-22 10:09:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39617 states to 39617 states and 57313 transitions. [2020-12-22 10:09:27,765 INFO L78 Accepts]: Start accepts. Automaton has 39617 states and 57313 transitions. Word has length 113 [2020-12-22 10:09:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:27,765 INFO L481 AbstractCegarLoop]: Abstraction has 39617 states and 57313 transitions. [2020-12-22 10:09:27,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:09:27,765 INFO L276 IsEmpty]: Start isEmpty. Operand 39617 states and 57313 transitions. [2020-12-22 10:09:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:09:27,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:27,773 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 10:09:27,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:09:27,773 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:27,774 INFO L82 PathProgramCache]: Analyzing trace with hash -21629902, now seen corresponding path program 1 times [2020-12-22 10:09:27,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:27,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419298861] [2020-12-22 10:09:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:27,920 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 10:09:27,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419298861] [2020-12-22 10:09:27,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:09:27,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:09:27,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520670104] [2020-12-22 10:09:27,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:09:27,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:27,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:09:27,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:09:27,922 INFO L87 Difference]: Start difference. First operand 39617 states and 57313 transitions. Second operand 8 states. [2020-12-22 10:09:33,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:33,724 INFO L93 Difference]: Finished difference Result 72655 states and 104936 transitions. [2020-12-22 10:09:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:09:33,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-12-22 10:09:33,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:33,800 INFO L225 Difference]: With dead ends: 72655 [2020-12-22 10:09:33,800 INFO L226 Difference]: Without dead ends: 67149 [2020-12-22 10:09:33,816 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 10:09:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67149 states. [2020-12-22 10:09:37,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67149 to 45121. [2020-12-22 10:09:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45121 states. [2020-12-22 10:09:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45121 states to 45121 states and 65185 transitions. [2020-12-22 10:09:37,812 INFO L78 Accepts]: Start accepts. Automaton has 45121 states and 65185 transitions. Word has length 113 [2020-12-22 10:09:37,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:37,812 INFO L481 AbstractCegarLoop]: Abstraction has 45121 states and 65185 transitions. [2020-12-22 10:09:37,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:09:37,812 INFO L276 IsEmpty]: Start isEmpty. Operand 45121 states and 65185 transitions. [2020-12-22 10:09:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:09:37,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:37,820 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 10:09:37,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:09:37,820 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:37,820 INFO L82 PathProgramCache]: Analyzing trace with hash 254785081, now seen corresponding path program 1 times [2020-12-22 10:09:37,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:37,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963891599] [2020-12-22 10:09:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:38,230 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 10:09:38,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963891599] [2020-12-22 10:09:38,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54006374] [2020-12-22 10:09:38,231 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 10:09:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:38,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 10:09:38,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:09:38,866 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 10:09:38,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:09:38,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 16 [2020-12-22 10:09:38,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780890209] [2020-12-22 10:09:38,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 10:09:38,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:38,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 10:09:38,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:09:38,869 INFO L87 Difference]: Start difference. First operand 45121 states and 65185 transitions. Second operand 16 states. [2020-12-22 10:09:39,979 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:09:40,171 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-22 10:09:40,579 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 10:09:45,208 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:09:45,436 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 10:09:53,562 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-22 10:09:54,414 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 10:10:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:11,057 INFO L93 Difference]: Finished difference Result 311062 states and 439420 transitions. [2020-12-22 10:10:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-22 10:10:11,060 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 114 [2020-12-22 10:10:11,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:11,859 INFO L225 Difference]: With dead ends: 311062 [2020-12-22 10:10:11,859 INFO L226 Difference]: Without dead ends: 269780 [2020-12-22 10:10:11,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1154, Invalid=5008, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 10:10:12,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269780 states. [2020-12-22 10:10:28,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269780 to 136814. [2020-12-22 10:10:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136814 states. [2020-12-22 10:10:28,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136814 states to 136814 states and 191423 transitions. [2020-12-22 10:10:28,289 INFO L78 Accepts]: Start accepts. Automaton has 136814 states and 191423 transitions. Word has length 114 [2020-12-22 10:10:28,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:28,289 INFO L481 AbstractCegarLoop]: Abstraction has 136814 states and 191423 transitions. [2020-12-22 10:10:28,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 10:10:28,289 INFO L276 IsEmpty]: Start isEmpty. Operand 136814 states and 191423 transitions. [2020-12-22 10:10:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 10:10:28,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:28,309 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 10:10:28,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 10:10:28,525 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:28,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:28,526 INFO L82 PathProgramCache]: Analyzing trace with hash -725866966, now seen corresponding path program 1 times [2020-12-22 10:10:28,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:28,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224244946] [2020-12-22 10:10:28,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:29,195 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 10:10:29,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224244946] [2020-12-22 10:10:29,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529097191] [2020-12-22 10:10:29,196 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 10:10:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:29,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 10:10:29,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:10:29,672 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 10:10:30,049 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 10:10:30,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:10:30,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 10:10:30,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58159036] [2020-12-22 10:10:30,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 10:10:30,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:30,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 10:10:30,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 10:10:30,052 INFO L87 Difference]: Start difference. First operand 136814 states and 191423 transitions. Second operand 22 states. [2020-12-22 10:10:30,184 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:30,514 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:30,636 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:31,200 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-12-22 10:10:32,702 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:32,902 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:10:33,140 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:10:33,446 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:10:34,182 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:34,382 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:10:34,716 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 10:10:35,027 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:10:37,167 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:38,089 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:38,365 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:39,697 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:39,850 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:40,018 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:41,307 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:42,431 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:10:42,845 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:10:44,350 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:45,106 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:45,356 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:45,923 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:46,571 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:47,538 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:10:47,683 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:10:47,859 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:10:49,374 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:50,664 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:51,147 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:51,835 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:52,371 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:11:00,724 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:11:00,864 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:01,070 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:11:01,217 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:01,427 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:11:01,609 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:01,860 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:11:02,177 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:11:02,341 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:02,575 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-22 10:11:02,802 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-12-22 10:11:03,218 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 10:11:03,578 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:03,807 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:11:03,984 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:04,205 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:11:04,431 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:11:04,707 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-22 10:11:04,845 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:05,056 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:11:05,236 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:05,484 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:11:05,714 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:11:06,314 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:11:06,646 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:11:06,826 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:07,149 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:11:07,300 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:11:07,877 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-22 10:11:08,126 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:08,751 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-12-22 10:11:08,908 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:09,121 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:09,433 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:11:09,695 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:09,864 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:25,880 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 10:11:26,230 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:26,421 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:26,834 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:11:26,998 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:27,231 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:11:27,462 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:28,742 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:11:29,059 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:29,241 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:29,389 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:11:29,630 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:29,839 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:11:30,254 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:30,949 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:11:31,118 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:31,467 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:11:33,033 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 10:11:33,271 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:11:33,609 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:11:34,061 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:34,392 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:35,203 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:37,914 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45