/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/product-lines/elevator_spec13_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:52:48,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:52:48,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:52:48,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:52:48,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:52:48,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:52:48,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:52:48,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:52:48,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:52:48,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:52:48,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:52:48,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:52:48,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:52:48,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:52:48,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:52:48,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:52:48,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:52:48,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:52:48,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:52:48,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:52:48,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:52:48,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:52:48,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:52:48,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:52:48,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:52:48,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:52:48,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:52:48,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:52:49,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:52:49,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:52:49,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:52:49,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:52:49,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:52:49,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:52:49,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:52:49,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:52:49,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:52:49,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:52:49,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:52:49,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:52:49,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:52:49,062 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:52:49,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:52:49,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:52:49,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:52:49,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:52:49,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:52:49,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:52:49,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:52:49,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:52:49,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:52:49,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:52:49,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:52:49,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:52:49,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:52:49,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:52:49,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:52:49,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:52:49,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:52:49,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:52:49,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:52:49,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:52:49,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:52:49,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:52:49,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:52:49,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:52:49,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:52:49,433 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:52:49,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2020-12-22 05:52:49,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724c9987d/f33f498a98874f48ad45012123b69187/FLAG0d9552105 [2020-12-22 05:52:50,178 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:52:50,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2020-12-22 05:52:50,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724c9987d/f33f498a98874f48ad45012123b69187/FLAG0d9552105 [2020-12-22 05:52:50,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724c9987d/f33f498a98874f48ad45012123b69187 [2020-12-22 05:52:50,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:52:50,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:52:50,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:52:50,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:52:50,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:52:50,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:52:50" (1/1) ... [2020-12-22 05:52:50,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c3ac50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:50, skipping insertion in model container [2020-12-22 05:52:50,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:52:50" (1/1) ... [2020-12-22 05:52:50,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:52:50,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:52:50,721 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/product-lines/elevator_spec13_product22.cil.c[1487,1500] [2020-12-22 05:52:51,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:52:51,208 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:52:51,227 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/product-lines/elevator_spec13_product22.cil.c[1487,1500] [2020-12-22 05:52:51,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:52:51,465 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:52:51,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51 WrapperNode [2020-12-22 05:52:51,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:52:51,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:52:51,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:52:51,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:52:51,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (1/1) ... [2020-12-22 05:52:51,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (1/1) ... [2020-12-22 05:52:52,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:52:52,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:52:52,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:52:52,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:52:52,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (1/1) ... [2020-12-22 05:52:52,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (1/1) ... [2020-12-22 05:52:52,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (1/1) ... [2020-12-22 05:52:52,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (1/1) ... [2020-12-22 05:52:53,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (1/1) ... [2020-12-22 05:52:53,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (1/1) ... [2020-12-22 05:52:53,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (1/1) ... [2020-12-22 05:52:54,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:52:54,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:52:54,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:52:54,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:52:54,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (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 05:52:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:52:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:52:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:52:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:53:24,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:53:24,813 INFO L299 CfgBuilder]: Removed 3571 assume(true) statements. [2020-12-22 05:53:24,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:53:24 BoogieIcfgContainer [2020-12-22 05:53:24,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:53:24,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:53:24,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:53:24,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:53:24,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:52:50" (1/3) ... [2020-12-22 05:53:24,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddeba67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:53:24, skipping insertion in model container [2020-12-22 05:53:24,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:52:51" (2/3) ... [2020-12-22 05:53:24,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddeba67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:53:24, skipping insertion in model container [2020-12-22 05:53:24,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:53:24" (3/3) ... [2020-12-22 05:53:24,840 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2020-12-22 05:53:24,846 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:53:24,856 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 05:53:24,872 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 05:53:24,960 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:53:24,961 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:53:24,961 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:53:24,961 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:53:24,961 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:53:24,961 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:53:24,961 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:53:24,962 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:53:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 17136 states. [2020-12-22 05:53:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 05:53:25,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:25,215 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] [2020-12-22 05:53:25,216 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:25,222 INFO L82 PathProgramCache]: Analyzing trace with hash 981100609, now seen corresponding path program 1 times [2020-12-22 05:53:25,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:25,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726351252] [2020-12-22 05:53:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:53:25,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726351252] [2020-12-22 05:53:25,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:25,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:53:25,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151940152] [2020-12-22 05:53:25,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:53:25,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:25,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:53:25,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:53:25,975 INFO L87 Difference]: Start difference. First operand 17136 states. Second operand 3 states. [2020-12-22 05:53:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:27,183 INFO L93 Difference]: Finished difference Result 51329 states and 97382 transitions. [2020-12-22 05:53:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:53:27,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 05:53:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:27,390 INFO L225 Difference]: With dead ends: 51329 [2020-12-22 05:53:27,390 INFO L226 Difference]: Without dead ends: 34193 [2020-12-22 05:53:27,433 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 05:53:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34193 states. [2020-12-22 05:53:28,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34193 to 17128. [2020-12-22 05:53:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17128 states. [2020-12-22 05:53:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17128 states to 17128 states and 32360 transitions. [2020-12-22 05:53:28,193 INFO L78 Accepts]: Start accepts. Automaton has 17128 states and 32360 transitions. Word has length 41 [2020-12-22 05:53:28,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:28,194 INFO L481 AbstractCegarLoop]: Abstraction has 17128 states and 32360 transitions. [2020-12-22 05:53:28,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:53:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 17128 states and 32360 transitions. [2020-12-22 05:53:28,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 05:53:28,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:28,199 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] [2020-12-22 05:53:28,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:53:28,203 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:28,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:28,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1019509189, now seen corresponding path program 1 times [2020-12-22 05:53:28,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:28,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965447236] [2020-12-22 05:53:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:28,372 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 05:53:28,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965447236] [2020-12-22 05:53:28,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:28,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:53:28,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114919448] [2020-12-22 05:53:28,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:53:28,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:28,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:53:28,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:53:28,377 INFO L87 Difference]: Start difference. First operand 17128 states and 32360 transitions. Second operand 4 states. [2020-12-22 05:53:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:31,083 INFO L93 Difference]: Finished difference Result 68228 states and 128903 transitions. [2020-12-22 05:53:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:53:31,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-12-22 05:53:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:31,223 INFO L225 Difference]: With dead ends: 68228 [2020-12-22 05:53:31,223 INFO L226 Difference]: Without dead ends: 51119 [2020-12-22 05:53:31,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:53:31,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51119 states. [2020-12-22 05:53:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51119 to 17113. [2020-12-22 05:53:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17113 states. [2020-12-22 05:53:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17113 states to 17113 states and 32316 transitions. [2020-12-22 05:53:32,144 INFO L78 Accepts]: Start accepts. Automaton has 17113 states and 32316 transitions. Word has length 42 [2020-12-22 05:53:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:32,144 INFO L481 AbstractCegarLoop]: Abstraction has 17113 states and 32316 transitions. [2020-12-22 05:53:32,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:53:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 17113 states and 32316 transitions. [2020-12-22 05:53:32,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 05:53:32,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:32,153 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] [2020-12-22 05:53:32,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:53:32,153 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:32,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:32,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1450445483, now seen corresponding path program 1 times [2020-12-22 05:53:32,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:32,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925014203] [2020-12-22 05:53:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:32,263 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 05:53:32,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925014203] [2020-12-22 05:53:32,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:32,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:53:32,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469599744] [2020-12-22 05:53:32,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:53:32,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:32,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:53:32,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:53:32,267 INFO L87 Difference]: Start difference. First operand 17113 states and 32316 transitions. Second operand 4 states. [2020-12-22 05:53:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:33,949 INFO L93 Difference]: Finished difference Result 64868 states and 122522 transitions. [2020-12-22 05:53:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:53:33,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 05:53:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:34,062 INFO L225 Difference]: With dead ends: 64868 [2020-12-22 05:53:34,062 INFO L226 Difference]: Without dead ends: 47774 [2020-12-22 05:53:34,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 05:53:34,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47774 states. [2020-12-22 05:53:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47774 to 17113. [2020-12-22 05:53:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17113 states. [2020-12-22 05:53:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17113 states to 17113 states and 32310 transitions. [2020-12-22 05:53:35,026 INFO L78 Accepts]: Start accepts. Automaton has 17113 states and 32310 transitions. Word has length 45 [2020-12-22 05:53:35,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:35,027 INFO L481 AbstractCegarLoop]: Abstraction has 17113 states and 32310 transitions. [2020-12-22 05:53:35,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:53:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 17113 states and 32310 transitions. [2020-12-22 05:53:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:53:35,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:35,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:53:35,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:53:35,030 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:35,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:35,031 INFO L82 PathProgramCache]: Analyzing trace with hash -354975995, now seen corresponding path program 1 times [2020-12-22 05:53:35,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:35,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469794371] [2020-12-22 05:53:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:35,104 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 05:53:35,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469794371] [2020-12-22 05:53:35,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:35,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:53:35,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679348617] [2020-12-22 05:53:35,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:53:35,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:35,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:53:35,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:53:35,110 INFO L87 Difference]: Start difference. First operand 17113 states and 32310 transitions. Second operand 4 states. [2020-12-22 05:53:36,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:36,803 INFO L93 Difference]: Finished difference Result 68232 states and 128873 transitions. [2020-12-22 05:53:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:53:36,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 05:53:36,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:36,917 INFO L225 Difference]: With dead ends: 68232 [2020-12-22 05:53:36,917 INFO L226 Difference]: Without dead ends: 51144 [2020-12-22 05:53:36,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:53:37,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51144 states. [2020-12-22 05:53:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51144 to 17117. [2020-12-22 05:53:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17117 states. [2020-12-22 05:53:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17117 states to 17117 states and 32313 transitions. [2020-12-22 05:53:37,732 INFO L78 Accepts]: Start accepts. Automaton has 17117 states and 32313 transitions. Word has length 47 [2020-12-22 05:53:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:37,732 INFO L481 AbstractCegarLoop]: Abstraction has 17117 states and 32313 transitions. [2020-12-22 05:53:37,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:53:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 17117 states and 32313 transitions. [2020-12-22 05:53:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 05:53:37,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:37,736 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] [2020-12-22 05:53:37,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:53:37,737 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:37,737 INFO L82 PathProgramCache]: Analyzing trace with hash -580135569, now seen corresponding path program 1 times [2020-12-22 05:53:37,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:37,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104504850] [2020-12-22 05:53:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:37,839 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 05:53:37,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104504850] [2020-12-22 05:53:37,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:37,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:53:37,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376647256] [2020-12-22 05:53:37,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:53:37,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:37,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:53:37,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:53:37,842 INFO L87 Difference]: Start difference. First operand 17117 states and 32313 transitions. Second operand 4 states. [2020-12-22 05:53:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:39,566 INFO L93 Difference]: Finished difference Result 68241 states and 128879 transitions. [2020-12-22 05:53:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:53:39,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-22 05:53:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:39,651 INFO L225 Difference]: With dead ends: 68241 [2020-12-22 05:53:39,651 INFO L226 Difference]: Without dead ends: 51149 [2020-12-22 05:53:39,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:53:39,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51149 states. [2020-12-22 05:53:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51149 to 17123. [2020-12-22 05:53:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17123 states. [2020-12-22 05:53:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17123 states to 17123 states and 32318 transitions. [2020-12-22 05:53:40,396 INFO L78 Accepts]: Start accepts. Automaton has 17123 states and 32318 transitions. Word has length 48 [2020-12-22 05:53:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:40,397 INFO L481 AbstractCegarLoop]: Abstraction has 17123 states and 32318 transitions. [2020-12-22 05:53:40,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:53:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 17123 states and 32318 transitions. [2020-12-22 05:53:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:53:40,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:40,400 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] [2020-12-22 05:53:40,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:53:40,401 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:40,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:40,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1511115382, now seen corresponding path program 1 times [2020-12-22 05:53:40,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:40,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655301064] [2020-12-22 05:53:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:40,464 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 05:53:40,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655301064] [2020-12-22 05:53:40,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:40,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:53:40,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090875655] [2020-12-22 05:53:40,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:53:40,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:53:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:53:40,467 INFO L87 Difference]: Start difference. First operand 17123 states and 32318 transitions. Second operand 4 states. [2020-12-22 05:53:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:42,080 INFO L93 Difference]: Finished difference Result 68254 states and 128889 transitions. [2020-12-22 05:53:42,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:53:42,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 05:53:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:42,325 INFO L225 Difference]: With dead ends: 68254 [2020-12-22 05:53:42,325 INFO L226 Difference]: Without dead ends: 51156 [2020-12-22 05:53:42,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:53:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51156 states. [2020-12-22 05:53:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51156 to 17131. [2020-12-22 05:53:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17131 states. [2020-12-22 05:53:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17131 states to 17131 states and 32325 transitions. [2020-12-22 05:53:43,037 INFO L78 Accepts]: Start accepts. Automaton has 17131 states and 32325 transitions. Word has length 49 [2020-12-22 05:53:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:43,037 INFO L481 AbstractCegarLoop]: Abstraction has 17131 states and 32325 transitions. [2020-12-22 05:53:43,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:53:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 17131 states and 32325 transitions. [2020-12-22 05:53:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 05:53:43,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:43,040 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] [2020-12-22 05:53:43,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:53:43,040 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:43,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:43,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1447281172, now seen corresponding path program 1 times [2020-12-22 05:53:43,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:43,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988184128] [2020-12-22 05:53:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:43,099 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 05:53:43,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988184128] [2020-12-22 05:53:43,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:43,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:53:43,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940997412] [2020-12-22 05:53:43,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:53:43,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:43,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:53:43,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:53:43,102 INFO L87 Difference]: Start difference. First operand 17131 states and 32325 transitions. Second operand 3 states. [2020-12-22 05:53:43,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:43,781 INFO L93 Difference]: Finished difference Result 41098 states and 77574 transitions. [2020-12-22 05:53:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:53:43,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-22 05:53:43,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:43,814 INFO L225 Difference]: With dead ends: 41098 [2020-12-22 05:53:43,815 INFO L226 Difference]: Without dead ends: 23996 [2020-12-22 05:53:43,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:53:43,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23996 states. [2020-12-22 05:53:44,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23996 to 17123. [2020-12-22 05:53:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17123 states. [2020-12-22 05:53:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17123 states to 17123 states and 32311 transitions. [2020-12-22 05:53:44,408 INFO L78 Accepts]: Start accepts. Automaton has 17123 states and 32311 transitions. Word has length 50 [2020-12-22 05:53:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:44,409 INFO L481 AbstractCegarLoop]: Abstraction has 17123 states and 32311 transitions. [2020-12-22 05:53:44,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:53:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 17123 states and 32311 transitions. [2020-12-22 05:53:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:53:44,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:44,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:53:44,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:53:44,412 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:44,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:44,413 INFO L82 PathProgramCache]: Analyzing trace with hash -11907815, now seen corresponding path program 1 times [2020-12-22 05:53:44,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:44,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705457773] [2020-12-22 05:53:44,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:44,502 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 05:53:44,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705457773] [2020-12-22 05:53:44,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:44,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:53:44,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422309438] [2020-12-22 05:53:44,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:53:44,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:44,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:53:44,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:53:44,508 INFO L87 Difference]: Start difference. First operand 17123 states and 32311 transitions. Second operand 5 states. [2020-12-22 05:53:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:45,555 INFO L93 Difference]: Finished difference Result 54726 states and 103313 transitions. [2020-12-22 05:53:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:53:45,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-12-22 05:53:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:45,601 INFO L225 Difference]: With dead ends: 54726 [2020-12-22 05:53:45,602 INFO L226 Difference]: Without dead ends: 37671 [2020-12-22 05:53:45,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:53:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37671 states. [2020-12-22 05:53:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37671 to 17117. [2020-12-22 05:53:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17117 states. [2020-12-22 05:53:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17117 states to 17117 states and 32298 transitions. [2020-12-22 05:53:46,368 INFO L78 Accepts]: Start accepts. Automaton has 17117 states and 32298 transitions. Word has length 52 [2020-12-22 05:53:46,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:46,368 INFO L481 AbstractCegarLoop]: Abstraction has 17117 states and 32298 transitions. [2020-12-22 05:53:46,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:53:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand 17117 states and 32298 transitions. [2020-12-22 05:53:46,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 05:53:46,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:46,371 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] [2020-12-22 05:53:46,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:53:46,372 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:46,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:46,372 INFO L82 PathProgramCache]: Analyzing trace with hash 389816867, now seen corresponding path program 1 times [2020-12-22 05:53:46,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:46,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636742686] [2020-12-22 05:53:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:46,458 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 05:53:46,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636742686] [2020-12-22 05:53:46,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:46,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:53:46,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154211313] [2020-12-22 05:53:46,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:53:46,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:53:46,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:53:46,467 INFO L87 Difference]: Start difference. First operand 17117 states and 32298 transitions. Second operand 5 states. [2020-12-22 05:53:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:47,706 INFO L93 Difference]: Finished difference Result 54702 states and 103266 transitions. [2020-12-22 05:53:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:53:47,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 05:53:47,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:47,751 INFO L225 Difference]: With dead ends: 54702 [2020-12-22 05:53:47,751 INFO L226 Difference]: Without dead ends: 37645 [2020-12-22 05:53:47,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:53:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37645 states. [2020-12-22 05:53:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37645 to 17111. [2020-12-22 05:53:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17111 states. [2020-12-22 05:53:48,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17111 states to 17111 states and 32285 transitions. [2020-12-22 05:53:48,310 INFO L78 Accepts]: Start accepts. Automaton has 17111 states and 32285 transitions. Word has length 54 [2020-12-22 05:53:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:48,310 INFO L481 AbstractCegarLoop]: Abstraction has 17111 states and 32285 transitions. [2020-12-22 05:53:48,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:53:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 17111 states and 32285 transitions. [2020-12-22 05:53:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 05:53:48,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:48,313 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] [2020-12-22 05:53:48,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:53:48,313 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:48,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1625332930, now seen corresponding path program 1 times [2020-12-22 05:53:48,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:48,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168194654] [2020-12-22 05:53:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:48,373 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 05:53:48,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168194654] [2020-12-22 05:53:48,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:48,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:53:48,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131829836] [2020-12-22 05:53:48,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:53:48,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:48,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:53:48,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:53:48,375 INFO L87 Difference]: Start difference. First operand 17111 states and 32285 transitions. Second operand 4 states. [2020-12-22 05:53:49,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:49,371 INFO L93 Difference]: Finished difference Result 41036 states and 77446 transitions. [2020-12-22 05:53:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:53:49,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 05:53:49,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:49,407 INFO L225 Difference]: With dead ends: 41036 [2020-12-22 05:53:49,407 INFO L226 Difference]: Without dead ends: 23978 [2020-12-22 05:53:49,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 05:53:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23978 states. [2020-12-22 05:53:49,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23978 to 17111. [2020-12-22 05:53:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17111 states. [2020-12-22 05:53:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17111 states to 17111 states and 32277 transitions. [2020-12-22 05:53:49,990 INFO L78 Accepts]: Start accepts. Automaton has 17111 states and 32277 transitions. Word has length 56 [2020-12-22 05:53:49,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:49,990 INFO L481 AbstractCegarLoop]: Abstraction has 17111 states and 32277 transitions. [2020-12-22 05:53:49,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:53:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 17111 states and 32277 transitions. [2020-12-22 05:53:49,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 05:53:49,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:49,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:53:49,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:53:49,993 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:49,993 INFO L82 PathProgramCache]: Analyzing trace with hash -189816488, now seen corresponding path program 1 times [2020-12-22 05:53:49,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:49,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102096021] [2020-12-22 05:53:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:50,092 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 05:53:50,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102096021] [2020-12-22 05:53:50,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:50,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:53:50,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532757129] [2020-12-22 05:53:50,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:53:50,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:50,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:53:50,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:53:50,094 INFO L87 Difference]: Start difference. First operand 17111 states and 32277 transitions. Second operand 3 states. [2020-12-22 05:53:51,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:51,850 INFO L93 Difference]: Finished difference Result 46289 states and 87333 transitions. [2020-12-22 05:53:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:53:51,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 05:53:51,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:51,888 INFO L225 Difference]: With dead ends: 46289 [2020-12-22 05:53:51,888 INFO L226 Difference]: Without dead ends: 32475 [2020-12-22 05:53:51,901 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 05:53:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32475 states. [2020-12-22 05:53:52,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32475 to 27503. [2020-12-22 05:53:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27503 states. [2020-12-22 05:53:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27503 states to 27503 states and 51841 transitions. [2020-12-22 05:53:52,904 INFO L78 Accepts]: Start accepts. Automaton has 27503 states and 51841 transitions. Word has length 57 [2020-12-22 05:53:52,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:52,904 INFO L481 AbstractCegarLoop]: Abstraction has 27503 states and 51841 transitions. [2020-12-22 05:53:52,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:53:52,904 INFO L276 IsEmpty]: Start isEmpty. Operand 27503 states and 51841 transitions. [2020-12-22 05:53:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:53:52,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:52,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:53:52,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:53:52,912 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:52,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1351370949, now seen corresponding path program 1 times [2020-12-22 05:53:52,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:52,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465840462] [2020-12-22 05:53:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:53,016 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 05:53:53,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465840462] [2020-12-22 05:53:53,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:53,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:53:53,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310721350] [2020-12-22 05:53:53,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:53:53,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:53,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:53:53,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:53:53,018 INFO L87 Difference]: Start difference. First operand 27503 states and 51841 transitions. Second operand 7 states. [2020-12-22 05:53:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:54,903 INFO L93 Difference]: Finished difference Result 71413 states and 133284 transitions. [2020-12-22 05:53:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:53:54,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-12-22 05:53:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:54,956 INFO L225 Difference]: With dead ends: 71413 [2020-12-22 05:53:54,956 INFO L226 Difference]: Without dead ends: 45094 [2020-12-22 05:53:54,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:53:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45094 states. [2020-12-22 05:53:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45094 to 26565. [2020-12-22 05:53:55,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26565 states. [2020-12-22 05:53:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26565 states to 26565 states and 49714 transitions. [2020-12-22 05:53:56,029 INFO L78 Accepts]: Start accepts. Automaton has 26565 states and 49714 transitions. Word has length 75 [2020-12-22 05:53:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:56,029 INFO L481 AbstractCegarLoop]: Abstraction has 26565 states and 49714 transitions. [2020-12-22 05:53:56,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:53:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 26565 states and 49714 transitions. [2020-12-22 05:53:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 05:53:56,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:56,034 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] [2020-12-22 05:53:56,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:53:56,034 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:56,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:56,034 INFO L82 PathProgramCache]: Analyzing trace with hash -305253792, now seen corresponding path program 1 times [2020-12-22 05:53:56,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:56,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483011933] [2020-12-22 05:53:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:56,106 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 05:53:56,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483011933] [2020-12-22 05:53:56,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:56,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:53:56,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268707307] [2020-12-22 05:53:56,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:53:56,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:56,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:53:56,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:53:56,108 INFO L87 Difference]: Start difference. First operand 26565 states and 49714 transitions. Second operand 3 states. [2020-12-22 05:53:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:53:58,171 INFO L93 Difference]: Finished difference Result 65820 states and 123248 transitions. [2020-12-22 05:53:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:53:58,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 05:53:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:53:58,218 INFO L225 Difference]: With dead ends: 65820 [2020-12-22 05:53:58,218 INFO L226 Difference]: Without dead ends: 40585 [2020-12-22 05:53:58,233 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 05:53:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40585 states. [2020-12-22 05:53:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40585 to 40565. [2020-12-22 05:53:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40565 states. [2020-12-22 05:53:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40565 states to 40565 states and 75619 transitions. [2020-12-22 05:53:59,464 INFO L78 Accepts]: Start accepts. Automaton has 40565 states and 75619 transitions. Word has length 76 [2020-12-22 05:53:59,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:53:59,464 INFO L481 AbstractCegarLoop]: Abstraction has 40565 states and 75619 transitions. [2020-12-22 05:53:59,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:53:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 40565 states and 75619 transitions. [2020-12-22 05:53:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 05:53:59,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:53:59,467 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 05:53:59,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:53:59,468 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:53:59,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:53:59,468 INFO L82 PathProgramCache]: Analyzing trace with hash 76914127, now seen corresponding path program 1 times [2020-12-22 05:53:59,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:53:59,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826259959] [2020-12-22 05:53:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:53:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:53:59,535 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 05:53:59,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826259959] [2020-12-22 05:53:59,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:53:59,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:53:59,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330959363] [2020-12-22 05:53:59,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:53:59,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:53:59,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:53:59,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:53:59,537 INFO L87 Difference]: Start difference. First operand 40565 states and 75619 transitions. Second operand 3 states. [2020-12-22 05:54:02,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:02,782 INFO L93 Difference]: Finished difference Result 106997 states and 199617 transitions. [2020-12-22 05:54:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:54:02,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 05:54:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:02,882 INFO L225 Difference]: With dead ends: 106997 [2020-12-22 05:54:02,882 INFO L226 Difference]: Without dead ends: 68399 [2020-12-22 05:54:02,916 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 05:54:02,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68399 states. [2020-12-22 05:54:04,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68399 to 68379. [2020-12-22 05:54:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68379 states. [2020-12-22 05:54:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68379 states to 68379 states and 127125 transitions. [2020-12-22 05:54:05,056 INFO L78 Accepts]: Start accepts. Automaton has 68379 states and 127125 transitions. Word has length 77 [2020-12-22 05:54:05,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:05,057 INFO L481 AbstractCegarLoop]: Abstraction has 68379 states and 127125 transitions. [2020-12-22 05:54:05,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:54:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 68379 states and 127125 transitions. [2020-12-22 05:54:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 05:54:05,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:05,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:54:05,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:54:05,060 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:54:05,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:05,061 INFO L82 PathProgramCache]: Analyzing trace with hash -447679483, now seen corresponding path program 1 times [2020-12-22 05:54:05,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:05,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487920816] [2020-12-22 05:54:05,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:05,134 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 05:54:05,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487920816] [2020-12-22 05:54:05,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:05,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:54:05,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309072772] [2020-12-22 05:54:05,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:54:05,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:05,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:54:05,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:54:05,137 INFO L87 Difference]: Start difference. First operand 68379 states and 127125 transitions. Second operand 3 states. [2020-12-22 05:54:09,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:09,057 INFO L93 Difference]: Finished difference Result 188871 states and 351383 transitions. [2020-12-22 05:54:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:54:09,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 05:54:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:09,260 INFO L225 Difference]: With dead ends: 188871 [2020-12-22 05:54:09,260 INFO L226 Difference]: Without dead ends: 123625 [2020-12-22 05:54:09,318 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 05:54:09,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123625 states. [2020-12-22 05:54:12,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123625 to 123605. [2020-12-22 05:54:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123605 states. [2020-12-22 05:54:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123605 states to 123605 states and 229263 transitions. [2020-12-22 05:54:12,930 INFO L78 Accepts]: Start accepts. Automaton has 123605 states and 229263 transitions. Word has length 78 [2020-12-22 05:54:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:12,931 INFO L481 AbstractCegarLoop]: Abstraction has 123605 states and 229263 transitions. [2020-12-22 05:54:12,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:54:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 123605 states and 229263 transitions. [2020-12-22 05:54:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 05:54:12,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:12,934 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 05:54:12,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:54:12,934 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:54:12,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:12,934 INFO L82 PathProgramCache]: Analyzing trace with hash 982890580, now seen corresponding path program 1 times [2020-12-22 05:54:12,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:12,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751100909] [2020-12-22 05:54:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:13,010 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 05:54:13,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751100909] [2020-12-22 05:54:13,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:13,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:54:13,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060367649] [2020-12-22 05:54:13,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:54:13,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:13,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:54:13,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:54:13,012 INFO L87 Difference]: Start difference. First operand 123605 states and 229263 transitions. Second operand 3 states. [2020-12-22 05:54:19,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:19,568 INFO L93 Difference]: Finished difference Result 351599 states and 652444 transitions. [2020-12-22 05:54:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:54:19,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 05:54:19,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:19,974 INFO L225 Difference]: With dead ends: 351599 [2020-12-22 05:54:19,974 INFO L226 Difference]: Without dead ends: 233243 [2020-12-22 05:54:20,073 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 05:54:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233243 states. [2020-12-22 05:54:27,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233243 to 233223. [2020-12-22 05:54:27,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233223 states. [2020-12-22 05:54:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233223 states to 233223 states and 431525 transitions. [2020-12-22 05:54:28,618 INFO L78 Accepts]: Start accepts. Automaton has 233223 states and 431525 transitions. Word has length 79 [2020-12-22 05:54:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:28,619 INFO L481 AbstractCegarLoop]: Abstraction has 233223 states and 431525 transitions. [2020-12-22 05:54:28,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:54:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 233223 states and 431525 transitions. [2020-12-22 05:54:28,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 05:54:28,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:28,623 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 05:54:28,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:54:28,623 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:54:28,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:28,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1400974934, now seen corresponding path program 1 times [2020-12-22 05:54:28,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:28,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069843447] [2020-12-22 05:54:28,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:28,748 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 05:54:28,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069843447] [2020-12-22 05:54:28,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:28,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:54:28,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939713755] [2020-12-22 05:54:28,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:54:28,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:28,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:54:28,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:54:28,750 INFO L87 Difference]: Start difference. First operand 233223 states and 431525 transitions. Second operand 3 states. [2020-12-22 05:54:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:41,520 INFO L93 Difference]: Finished difference Result 674955 states and 1249097 transitions. [2020-12-22 05:54:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:54:41,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 05:54:41,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:42,492 INFO L225 Difference]: With dead ends: 674955 [2020-12-22 05:54:42,492 INFO L226 Difference]: Without dead ends: 450781 [2020-12-22 05:54:42,714 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 05:54:43,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450781 states. [2020-12-22 05:54:56,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450781 to 450761. [2020-12-22 05:54:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450761 states. [2020-12-22 05:54:57,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450761 states to 450761 states and 831755 transitions. [2020-12-22 05:54:57,697 INFO L78 Accepts]: Start accepts. Automaton has 450761 states and 831755 transitions. Word has length 80 [2020-12-22 05:54:57,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:57,697 INFO L481 AbstractCegarLoop]: Abstraction has 450761 states and 831755 transitions. [2020-12-22 05:54:57,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:54:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 450761 states and 831755 transitions. [2020-12-22 05:54:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 05:54:57,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:57,701 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 05:54:57,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:54:57,701 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:54:57,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:57,701 INFO L82 PathProgramCache]: Analyzing trace with hash 522253100, now seen corresponding path program 1 times [2020-12-22 05:54:57,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:57,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263690401] [2020-12-22 05:54:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:57,800 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 05:54:57,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263690401] [2020-12-22 05:54:57,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:57,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:54:57,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728313251] [2020-12-22 05:54:57,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:54:57,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:57,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:54:57,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:54:57,806 INFO L87 Difference]: Start difference. First operand 450761 states and 831755 transitions. Second operand 5 states. [2020-12-22 05:55:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:39,802 INFO L93 Difference]: Finished difference Result 2169623 states and 3991841 transitions. [2020-12-22 05:55:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:55:39,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-22 05:55:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:46,475 INFO L225 Difference]: With dead ends: 2169623 [2020-12-22 05:55:46,475 INFO L226 Difference]: Without dead ends: 1757169 [2020-12-22 05:55:47,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:55:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757169 states.