/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_spec1_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:02:31,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:02:31,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:02:31,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:02:31,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:02:31,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:02:31,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:02:31,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:02:31,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:02:31,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:02:31,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:02:31,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:02:31,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:02:31,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:02:31,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:02:31,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:02:31,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:02:31,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:02:31,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:02:31,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:02:31,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:02:31,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:02:31,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:02:31,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:02:31,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 06:02:31,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 06:02:31,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 06:02:31,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 06:02:31,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 06:02:31,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 06:02:31,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:02:31,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:02:31,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:02:31,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:02:31,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:02:31,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:02:31,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:02:31,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:02:31,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:02:31,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:02:31,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:02:31,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:02:31,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:02:31,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:02:31,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:02:31,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:02:31,980 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:02:31,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:02:31,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:02:31,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:02:31,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:02:31,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:02:31,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:02:31,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:02:31,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:02:31,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:02:31,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:02:31,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:02:31,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:02:31,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:02:31,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:02:31,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:02:31,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:02:31,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:02:31,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:02:31,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:02:31,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:02:31,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:02:32,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:02:32,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:02:32,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:02:32,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:02:32,414 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:02:32,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2020-12-22 06:02:32,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b58f33a/901c11bbdef94301a439c62c8969cf88/FLAGff5149a62 [2020-12-22 06:02:33,318 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:02:33,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2020-12-22 06:02:33,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b58f33a/901c11bbdef94301a439c62c8969cf88/FLAGff5149a62 [2020-12-22 06:02:33,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b58f33a/901c11bbdef94301a439c62c8969cf88 [2020-12-22 06:02:33,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:02:33,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:02:33,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:02:33,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:02:33,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:02:33,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:02:33" (1/1) ... [2020-12-22 06:02:33,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305c4767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:33, skipping insertion in model container [2020-12-22 06:02:33,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:02:33" (1/1) ... [2020-12-22 06:02:33,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:02:33,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:02:33,959 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_spec1_product31.cil.c[10908,10921] [2020-12-22 06:02:34,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:02:34,395 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:02:34,470 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_spec1_product31.cil.c[10908,10921] [2020-12-22 06:02:34,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:02:34,704 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:02:34,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34 WrapperNode [2020-12-22 06:02:34,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:02:34,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:02:34,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:02:34,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:02:34,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (1/1) ... [2020-12-22 06:02:34,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (1/1) ... [2020-12-22 06:02:35,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:02:35,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:02:35,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:02:35,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:02:35,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (1/1) ... [2020-12-22 06:02:35,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (1/1) ... [2020-12-22 06:02:35,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (1/1) ... [2020-12-22 06:02:35,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (1/1) ... [2020-12-22 06:02:35,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (1/1) ... [2020-12-22 06:02:35,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (1/1) ... [2020-12-22 06:02:35,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (1/1) ... [2020-12-22 06:02:35,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:02:35,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:02:35,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:02:35,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:02:35,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (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 06:02:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:02:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:02:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:02:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:02:42,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:02:42,191 INFO L299 CfgBuilder]: Removed 881 assume(true) statements. [2020-12-22 06:02:42,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:02:42 BoogieIcfgContainer [2020-12-22 06:02:42,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:02:42,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:02:42,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:02:42,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:02:42,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:02:33" (1/3) ... [2020-12-22 06:02:42,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e666206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:02:42, skipping insertion in model container [2020-12-22 06:02:42,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:34" (2/3) ... [2020-12-22 06:02:42,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e666206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:02:42, skipping insertion in model container [2020-12-22 06:02:42,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:02:42" (3/3) ... [2020-12-22 06:02:42,211 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product31.cil.c [2020-12-22 06:02:42,219 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:02:42,230 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:02:42,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:02:42,320 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:02:42,320 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:02:42,320 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:02:42,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:02:42,320 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:02:42,321 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:02:42,321 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:02:42,321 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:02:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states. [2020-12-22 06:02:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:02:42,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:42,433 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] [2020-12-22 06:02:42,434 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:42,442 INFO L82 PathProgramCache]: Analyzing trace with hash -183688650, now seen corresponding path program 1 times [2020-12-22 06:02:42,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:42,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403139650] [2020-12-22 06:02:42,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:42,991 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 06:02:42,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403139650] [2020-12-22 06:02:42,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:42,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:42,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41962696] [2020-12-22 06:02:43,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:43,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:43,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:43,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:43,025 INFO L87 Difference]: Start difference. First operand 3675 states. Second operand 3 states. [2020-12-22 06:02:43,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:43,528 INFO L93 Difference]: Finished difference Result 10945 states and 20597 transitions. [2020-12-22 06:02:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:43,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 06:02:43,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:43,627 INFO L225 Difference]: With dead ends: 10945 [2020-12-22 06:02:43,628 INFO L226 Difference]: Without dead ends: 7275 [2020-12-22 06:02:43,646 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 06:02:43,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7275 states. [2020-12-22 06:02:43,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7275 to 3671. [2020-12-22 06:02:43,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3671 states. [2020-12-22 06:02:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 6896 transitions. [2020-12-22 06:02:43,893 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 6896 transitions. Word has length 53 [2020-12-22 06:02:43,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:43,893 INFO L481 AbstractCegarLoop]: Abstraction has 3671 states and 6896 transitions. [2020-12-22 06:02:43,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 6896 transitions. [2020-12-22 06:02:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:02:43,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:43,901 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] [2020-12-22 06:02:43,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:02:43,903 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:43,905 INFO L82 PathProgramCache]: Analyzing trace with hash -63832707, now seen corresponding path program 1 times [2020-12-22 06:02:43,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:43,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940780721] [2020-12-22 06:02:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:44,105 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 06:02:44,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940780721] [2020-12-22 06:02:44,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:44,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:44,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218034193] [2020-12-22 06:02:44,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:44,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:44,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:44,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:44,110 INFO L87 Difference]: Start difference. First operand 3671 states and 6896 transitions. Second operand 4 states. [2020-12-22 06:02:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:44,863 INFO L93 Difference]: Finished difference Result 14438 states and 27139 transitions. [2020-12-22 06:02:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:44,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:02:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:44,931 INFO L225 Difference]: With dead ends: 14438 [2020-12-22 06:02:44,931 INFO L226 Difference]: Without dead ends: 10789 [2020-12-22 06:02:44,945 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 06:02:44,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10789 states. [2020-12-22 06:02:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10789 to 3647. [2020-12-22 06:02:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3647 states. [2020-12-22 06:02:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 6843 transitions. [2020-12-22 06:02:45,142 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 6843 transitions. Word has length 60 [2020-12-22 06:02:45,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:45,143 INFO L481 AbstractCegarLoop]: Abstraction has 3647 states and 6843 transitions. [2020-12-22 06:02:45,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 6843 transitions. [2020-12-22 06:02:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:02:45,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:45,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:02:45,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:02:45,148 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:45,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1713448475, now seen corresponding path program 1 times [2020-12-22 06:02:45,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:45,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954468261] [2020-12-22 06:02:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:45,278 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 06:02:45,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954468261] [2020-12-22 06:02:45,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:45,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:45,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342195817] [2020-12-22 06:02:45,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:45,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:45,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:45,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:45,282 INFO L87 Difference]: Start difference. First operand 3647 states and 6843 transitions. Second operand 4 states. [2020-12-22 06:02:45,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:45,769 INFO L93 Difference]: Finished difference Result 10849 states and 20380 transitions. [2020-12-22 06:02:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:45,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 06:02:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:45,827 INFO L225 Difference]: With dead ends: 10849 [2020-12-22 06:02:45,828 INFO L226 Difference]: Without dead ends: 7224 [2020-12-22 06:02:45,837 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 06:02:45,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7224 states. [2020-12-22 06:02:45,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7224 to 3647. [2020-12-22 06:02:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3647 states. [2020-12-22 06:02:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 6837 transitions. [2020-12-22 06:02:46,015 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 6837 transitions. Word has length 61 [2020-12-22 06:02:46,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:46,022 INFO L481 AbstractCegarLoop]: Abstraction has 3647 states and 6837 transitions. [2020-12-22 06:02:46,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:46,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 6837 transitions. [2020-12-22 06:02:46,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:02:46,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:46,027 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] [2020-12-22 06:02:46,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:02:46,027 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:46,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1064213782, now seen corresponding path program 1 times [2020-12-22 06:02:46,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:46,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577378816] [2020-12-22 06:02:46,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:46,206 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 06:02:46,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577378816] [2020-12-22 06:02:46,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:46,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:46,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349047931] [2020-12-22 06:02:46,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:46,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:46,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:46,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:46,209 INFO L87 Difference]: Start difference. First operand 3647 states and 6837 transitions. Second operand 4 states. [2020-12-22 06:02:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:46,727 INFO L93 Difference]: Finished difference Result 10849 states and 20368 transitions. [2020-12-22 06:02:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:46,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 06:02:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:46,752 INFO L225 Difference]: With dead ends: 10849 [2020-12-22 06:02:46,752 INFO L226 Difference]: Without dead ends: 7224 [2020-12-22 06:02:46,761 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 06:02:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7224 states. [2020-12-22 06:02:46,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7224 to 3647. [2020-12-22 06:02:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3647 states. [2020-12-22 06:02:46,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 6831 transitions. [2020-12-22 06:02:46,965 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 6831 transitions. Word has length 63 [2020-12-22 06:02:46,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:46,966 INFO L481 AbstractCegarLoop]: Abstraction has 3647 states and 6831 transitions. [2020-12-22 06:02:46,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:46,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 6831 transitions. [2020-12-22 06:02:46,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:02:46,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:46,971 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] [2020-12-22 06:02:46,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:02:46,971 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:46,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:46,972 INFO L82 PathProgramCache]: Analyzing trace with hash -472275451, now seen corresponding path program 1 times [2020-12-22 06:02:46,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:46,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631101647] [2020-12-22 06:02:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:47,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631101647] [2020-12-22 06:02:47,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:47,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:47,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585234727] [2020-12-22 06:02:47,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:47,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:47,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:47,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:47,076 INFO L87 Difference]: Start difference. First operand 3647 states and 6831 transitions. Second operand 4 states. [2020-12-22 06:02:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:48,018 INFO L93 Difference]: Finished difference Result 17985 states and 33770 transitions. [2020-12-22 06:02:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:48,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 06:02:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:48,061 INFO L225 Difference]: With dead ends: 17985 [2020-12-22 06:02:48,061 INFO L226 Difference]: Without dead ends: 14360 [2020-12-22 06:02:48,070 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 06:02:48,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14360 states. [2020-12-22 06:02:48,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14360 to 3647. [2020-12-22 06:02:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3647 states. [2020-12-22 06:02:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 6830 transitions. [2020-12-22 06:02:48,334 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 6830 transitions. Word has length 65 [2020-12-22 06:02:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:48,334 INFO L481 AbstractCegarLoop]: Abstraction has 3647 states and 6830 transitions. [2020-12-22 06:02:48,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 6830 transitions. [2020-12-22 06:02:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:02:48,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:48,338 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] [2020-12-22 06:02:48,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:02:48,339 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:48,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:48,339 INFO L82 PathProgramCache]: Analyzing trace with hash 407840554, now seen corresponding path program 1 times [2020-12-22 06:02:48,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:48,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844505089] [2020-12-22 06:02:48,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:48,445 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 06:02:48,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844505089] [2020-12-22 06:02:48,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:48,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:48,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120025171] [2020-12-22 06:02:48,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:48,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:48,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:48,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:48,448 INFO L87 Difference]: Start difference. First operand 3647 states and 6830 transitions. Second operand 4 states. [2020-12-22 06:02:48,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:48,873 INFO L93 Difference]: Finished difference Result 10849 states and 20355 transitions. [2020-12-22 06:02:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:48,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 06:02:48,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:48,894 INFO L225 Difference]: With dead ends: 10849 [2020-12-22 06:02:48,895 INFO L226 Difference]: Without dead ends: 7224 [2020-12-22 06:02:48,903 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 06:02:48,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7224 states. [2020-12-22 06:02:49,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7224 to 3647. [2020-12-22 06:02:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3647 states. [2020-12-22 06:02:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 6824 transitions. [2020-12-22 06:02:49,086 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 6824 transitions. Word has length 66 [2020-12-22 06:02:49,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:49,086 INFO L481 AbstractCegarLoop]: Abstraction has 3647 states and 6824 transitions. [2020-12-22 06:02:49,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:49,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 6824 transitions. [2020-12-22 06:02:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:02:49,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:49,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:49,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:02:49,090 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:49,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:49,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1108571670, now seen corresponding path program 1 times [2020-12-22 06:02:49,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:49,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81589820] [2020-12-22 06:02:49,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:49,189 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 06:02:49,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81589820] [2020-12-22 06:02:49,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:49,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:49,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190429187] [2020-12-22 06:02:49,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:49,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:49,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:49,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:49,194 INFO L87 Difference]: Start difference. First operand 3647 states and 6824 transitions. Second operand 4 states. [2020-12-22 06:02:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:49,614 INFO L93 Difference]: Finished difference Result 10849 states and 20343 transitions. [2020-12-22 06:02:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:49,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 06:02:49,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:49,636 INFO L225 Difference]: With dead ends: 10849 [2020-12-22 06:02:49,637 INFO L226 Difference]: Without dead ends: 7224 [2020-12-22 06:02:49,646 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 06:02:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7224 states. [2020-12-22 06:02:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7224 to 3647. [2020-12-22 06:02:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3647 states. [2020-12-22 06:02:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 6818 transitions. [2020-12-22 06:02:49,836 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 6818 transitions. Word has length 67 [2020-12-22 06:02:49,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:49,836 INFO L481 AbstractCegarLoop]: Abstraction has 3647 states and 6818 transitions. [2020-12-22 06:02:49,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 6818 transitions. [2020-12-22 06:02:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:02:49,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:49,840 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] [2020-12-22 06:02:49,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:02:49,840 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:49,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:49,841 INFO L82 PathProgramCache]: Analyzing trace with hash 392052335, now seen corresponding path program 1 times [2020-12-22 06:02:49,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:49,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237600575] [2020-12-22 06:02:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:49,912 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 06:02:49,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237600575] [2020-12-22 06:02:49,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:49,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:49,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008825715] [2020-12-22 06:02:49,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:49,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:49,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:49,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:49,915 INFO L87 Difference]: Start difference. First operand 3647 states and 6818 transitions. Second operand 4 states. [2020-12-22 06:02:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:50,449 INFO L93 Difference]: Finished difference Result 14396 states and 27005 transitions. [2020-12-22 06:02:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:50,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 06:02:50,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:50,483 INFO L225 Difference]: With dead ends: 14396 [2020-12-22 06:02:50,483 INFO L226 Difference]: Without dead ends: 10777 [2020-12-22 06:02:50,492 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 06:02:50,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10777 states. [2020-12-22 06:02:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10777 to 3649. [2020-12-22 06:02:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3649 states. [2020-12-22 06:02:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 6819 transitions. [2020-12-22 06:02:50,700 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 6819 transitions. Word has length 68 [2020-12-22 06:02:50,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:50,702 INFO L481 AbstractCegarLoop]: Abstraction has 3649 states and 6819 transitions. [2020-12-22 06:02:50,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 6819 transitions. [2020-12-22 06:02:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:02:50,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:50,717 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] [2020-12-22 06:02:50,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:02:50,717 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:50,718 INFO L82 PathProgramCache]: Analyzing trace with hash -488204641, now seen corresponding path program 1 times [2020-12-22 06:02:50,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:50,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582556176] [2020-12-22 06:02:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:50,797 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 06:02:50,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582556176] [2020-12-22 06:02:50,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:50,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:50,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172365240] [2020-12-22 06:02:50,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:50,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:50,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:50,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:50,805 INFO L87 Difference]: Start difference. First operand 3649 states and 6819 transitions. Second operand 4 states. [2020-12-22 06:02:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:51,346 INFO L93 Difference]: Finished difference Result 14388 states and 26985 transitions. [2020-12-22 06:02:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:51,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-22 06:02:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:51,394 INFO L225 Difference]: With dead ends: 14388 [2020-12-22 06:02:51,394 INFO L226 Difference]: Without dead ends: 10772 [2020-12-22 06:02:51,404 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 06:02:51,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2020-12-22 06:02:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 3654. [2020-12-22 06:02:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2020-12-22 06:02:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 6827 transitions. [2020-12-22 06:02:51,624 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 6827 transitions. Word has length 69 [2020-12-22 06:02:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:51,625 INFO L481 AbstractCegarLoop]: Abstraction has 3654 states and 6827 transitions. [2020-12-22 06:02:51,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 6827 transitions. [2020-12-22 06:02:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:02:51,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:51,628 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] [2020-12-22 06:02:51,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:02:51,629 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:51,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:51,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1663726628, now seen corresponding path program 1 times [2020-12-22 06:02:51,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:51,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345170869] [2020-12-22 06:02:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:51,688 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 06:02:51,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345170869] [2020-12-22 06:02:51,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:51,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:51,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424568898] [2020-12-22 06:02:51,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:51,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:51,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:51,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:51,690 INFO L87 Difference]: Start difference. First operand 3654 states and 6827 transitions. Second operand 3 states. [2020-12-22 06:02:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:51,914 INFO L93 Difference]: Finished difference Result 7265 states and 13596 transitions. [2020-12-22 06:02:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:51,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 06:02:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:51,928 INFO L225 Difference]: With dead ends: 7265 [2020-12-22 06:02:51,929 INFO L226 Difference]: Without dead ends: 3648 [2020-12-22 06:02:51,935 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 06:02:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3648 states. [2020-12-22 06:02:52,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3648 to 3648. [2020-12-22 06:02:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3648 states. [2020-12-22 06:02:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 6815 transitions. [2020-12-22 06:02:52,102 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 6815 transitions. Word has length 70 [2020-12-22 06:02:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:52,103 INFO L481 AbstractCegarLoop]: Abstraction has 3648 states and 6815 transitions. [2020-12-22 06:02:52,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 6815 transitions. [2020-12-22 06:02:52,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:02:52,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:52,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:52,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:02:52,107 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:52,108 INFO L82 PathProgramCache]: Analyzing trace with hash -650743265, now seen corresponding path program 1 times [2020-12-22 06:02:52,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:52,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037600380] [2020-12-22 06:02:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:52,189 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 06:02:52,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037600380] [2020-12-22 06:02:52,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:52,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:52,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653809635] [2020-12-22 06:02:52,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:52,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:52,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:52,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:52,193 INFO L87 Difference]: Start difference. First operand 3648 states and 6815 transitions. Second operand 5 states. [2020-12-22 06:02:52,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:52,431 INFO L93 Difference]: Finished difference Result 7209 states and 13509 transitions. [2020-12-22 06:02:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:52,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 06:02:52,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:52,438 INFO L225 Difference]: With dead ends: 7209 [2020-12-22 06:02:52,438 INFO L226 Difference]: Without dead ends: 3635 [2020-12-22 06:02:52,444 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 06:02:52,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2020-12-22 06:02:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3635. [2020-12-22 06:02:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3635 states. [2020-12-22 06:02:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 6793 transitions. [2020-12-22 06:02:52,619 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 6793 transitions. Word has length 72 [2020-12-22 06:02:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:52,619 INFO L481 AbstractCegarLoop]: Abstraction has 3635 states and 6793 transitions. [2020-12-22 06:02:52,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:52,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 6793 transitions. [2020-12-22 06:02:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:02:52,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:52,624 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 06:02:52,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:02:52,624 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:52,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1408208117, now seen corresponding path program 1 times [2020-12-22 06:02:52,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:52,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398306804] [2020-12-22 06:02:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:52,693 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 06:02:52,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398306804] [2020-12-22 06:02:52,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:52,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:52,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298978662] [2020-12-22 06:02:52,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:52,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:52,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:52,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:52,695 INFO L87 Difference]: Start difference. First operand 3635 states and 6793 transitions. Second operand 5 states. [2020-12-22 06:02:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:52,896 INFO L93 Difference]: Finished difference Result 7203 states and 13498 transitions. [2020-12-22 06:02:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:52,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 06:02:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:52,902 INFO L225 Difference]: With dead ends: 7203 [2020-12-22 06:02:52,902 INFO L226 Difference]: Without dead ends: 3629 [2020-12-22 06:02:52,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2020-12-22 06:02:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3629. [2020-12-22 06:02:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3629 states. [2020-12-22 06:02:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 6784 transitions. [2020-12-22 06:02:53,083 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 6784 transitions. Word has length 75 [2020-12-22 06:02:53,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:53,084 INFO L481 AbstractCegarLoop]: Abstraction has 3629 states and 6784 transitions. [2020-12-22 06:02:53,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 6784 transitions. [2020-12-22 06:02:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:02:53,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:53,088 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 06:02:53,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:02:53,088 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:53,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:53,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1665200245, now seen corresponding path program 1 times [2020-12-22 06:02:53,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:53,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980303378] [2020-12-22 06:02:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:53,187 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 06:02:53,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980303378] [2020-12-22 06:02:53,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:53,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:53,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905073912] [2020-12-22 06:02:53,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:53,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:53,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:53,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:53,190 INFO L87 Difference]: Start difference. First operand 3629 states and 6784 transitions. Second operand 4 states. [2020-12-22 06:02:53,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:53,486 INFO L93 Difference]: Finished difference Result 7197 states and 13489 transitions. [2020-12-22 06:02:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:02:53,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 06:02:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:53,493 INFO L225 Difference]: With dead ends: 7197 [2020-12-22 06:02:53,493 INFO L226 Difference]: Without dead ends: 3615 [2020-12-22 06:02:53,499 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 06:02:53,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2020-12-22 06:02:53,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3615. [2020-12-22 06:02:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3615 states. [2020-12-22 06:02:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 6763 transitions. [2020-12-22 06:02:53,732 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 6763 transitions. Word has length 75 [2020-12-22 06:02:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:53,732 INFO L481 AbstractCegarLoop]: Abstraction has 3615 states and 6763 transitions. [2020-12-22 06:02:53,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 6763 transitions. [2020-12-22 06:02:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:02:53,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:53,737 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 06:02:53,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:02:53,737 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:53,738 INFO L82 PathProgramCache]: Analyzing trace with hash 194041656, now seen corresponding path program 1 times [2020-12-22 06:02:53,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:53,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117746019] [2020-12-22 06:02:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:53,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117746019] [2020-12-22 06:02:53,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:53,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:53,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160460337] [2020-12-22 06:02:53,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:53,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:53,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:53,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:53,824 INFO L87 Difference]: Start difference. First operand 3615 states and 6763 transitions. Second operand 6 states. [2020-12-22 06:02:54,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:54,305 INFO L93 Difference]: Finished difference Result 7197 states and 13484 transitions. [2020-12-22 06:02:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:54,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 06:02:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:54,315 INFO L225 Difference]: With dead ends: 7197 [2020-12-22 06:02:54,315 INFO L226 Difference]: Without dead ends: 3635 [2020-12-22 06:02:54,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:02:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2020-12-22 06:02:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3615. [2020-12-22 06:02:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3615 states. [2020-12-22 06:02:54,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 6762 transitions. [2020-12-22 06:02:54,602 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 6762 transitions. Word has length 76 [2020-12-22 06:02:54,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:54,602 INFO L481 AbstractCegarLoop]: Abstraction has 3615 states and 6762 transitions. [2020-12-22 06:02:54,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:54,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 6762 transitions. [2020-12-22 06:02:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 06:02:54,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:54,607 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 06:02:54,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:02:54,608 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:54,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1134957956, now seen corresponding path program 1 times [2020-12-22 06:02:54,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:54,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372124769] [2020-12-22 06:02:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:54,708 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 06:02:54,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372124769] [2020-12-22 06:02:54,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:54,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:54,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270014423] [2020-12-22 06:02:54,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:54,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:54,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:54,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:54,713 INFO L87 Difference]: Start difference. First operand 3615 states and 6762 transitions. Second operand 6 states. [2020-12-22 06:02:55,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:55,100 INFO L93 Difference]: Finished difference Result 7187 states and 13465 transitions. [2020-12-22 06:02:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:55,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 06:02:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:55,107 INFO L225 Difference]: With dead ends: 7187 [2020-12-22 06:02:55,107 INFO L226 Difference]: Without dead ends: 3630 [2020-12-22 06:02:55,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:02:55,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2020-12-22 06:02:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 3615. [2020-12-22 06:02:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3615 states. [2020-12-22 06:02:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 6761 transitions. [2020-12-22 06:02:55,311 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 6761 transitions. Word has length 77 [2020-12-22 06:02:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:55,312 INFO L481 AbstractCegarLoop]: Abstraction has 3615 states and 6761 transitions. [2020-12-22 06:02:55,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 6761 transitions. [2020-12-22 06:02:55,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:02:55,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:55,316 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 06:02:55,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:02:55,316 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1149977565, now seen corresponding path program 1 times [2020-12-22 06:02:55,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:55,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908579750] [2020-12-22 06:02:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:55,408 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 06:02:55,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908579750] [2020-12-22 06:02:55,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:55,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:55,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610412143] [2020-12-22 06:02:55,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:55,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:55,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:55,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:55,414 INFO L87 Difference]: Start difference. First operand 3615 states and 6761 transitions. Second operand 6 states. [2020-12-22 06:03:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:01,562 INFO L93 Difference]: Finished difference Result 24719 states and 46195 transitions. [2020-12-22 06:03:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:03:01,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 06:03:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:01,593 INFO L225 Difference]: With dead ends: 24719 [2020-12-22 06:03:01,593 INFO L226 Difference]: Without dead ends: 21195 [2020-12-22 06:03:01,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:03:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21195 states. [2020-12-22 06:03:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21195 to 3621. [2020-12-22 06:03:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3621 states. [2020-12-22 06:03:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6767 transitions. [2020-12-22 06:03:01,971 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 6767 transitions. Word has length 78 [2020-12-22 06:03:01,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:01,971 INFO L481 AbstractCegarLoop]: Abstraction has 3621 states and 6767 transitions. [2020-12-22 06:03:01,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:03:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 6767 transitions. [2020-12-22 06:03:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:03:01,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:01,975 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 06:03:01,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:03:01,975 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:01,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:01,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1660069039, now seen corresponding path program 1 times [2020-12-22 06:03:01,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:01,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650952185] [2020-12-22 06:03:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:02,089 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 06:03:02,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650952185] [2020-12-22 06:03:02,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:02,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:02,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090984243] [2020-12-22 06:03:02,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:02,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:02,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:02,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:02,092 INFO L87 Difference]: Start difference. First operand 3621 states and 6767 transitions. Second operand 4 states. [2020-12-22 06:03:04,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:04,564 INFO L93 Difference]: Finished difference Result 9546 states and 17947 transitions. [2020-12-22 06:03:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:04,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 06:03:04,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:04,574 INFO L225 Difference]: With dead ends: 9546 [2020-12-22 06:03:04,575 INFO L226 Difference]: Without dead ends: 6018 [2020-12-22 06:03:04,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:04,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6018 states. [2020-12-22 06:03:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6018 to 3621. [2020-12-22 06:03:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3621 states. [2020-12-22 06:03:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6761 transitions. [2020-12-22 06:03:04,917 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 6761 transitions. Word has length 79 [2020-12-22 06:03:04,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:04,918 INFO L481 AbstractCegarLoop]: Abstraction has 3621 states and 6761 transitions. [2020-12-22 06:03:04,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:04,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 6761 transitions. [2020-12-22 06:03:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:03:04,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:04,921 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 06:03:04,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:03:04,922 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:04,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:04,922 INFO L82 PathProgramCache]: Analyzing trace with hash 479677129, now seen corresponding path program 1 times [2020-12-22 06:03:04,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:04,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108273741] [2020-12-22 06:03:04,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:05,017 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 06:03:05,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108273741] [2020-12-22 06:03:05,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:05,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:05,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884480192] [2020-12-22 06:03:05,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:05,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:05,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:05,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:05,020 INFO L87 Difference]: Start difference. First operand 3621 states and 6761 transitions. Second operand 4 states. [2020-12-22 06:03:07,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:07,668 INFO L93 Difference]: Finished difference Result 9572 states and 17982 transitions. [2020-12-22 06:03:07,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:07,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 06:03:07,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:07,677 INFO L225 Difference]: With dead ends: 9572 [2020-12-22 06:03:07,677 INFO L226 Difference]: Without dead ends: 6018 [2020-12-22 06:03:07,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6018 states. [2020-12-22 06:03:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6018 to 3621. [2020-12-22 06:03:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3621 states. [2020-12-22 06:03:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6755 transitions. [2020-12-22 06:03:07,979 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 6755 transitions. Word has length 80 [2020-12-22 06:03:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:07,979 INFO L481 AbstractCegarLoop]: Abstraction has 3621 states and 6755 transitions. [2020-12-22 06:03:07,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 6755 transitions. [2020-12-22 06:03:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:03:07,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:07,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:07,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:03:07,983 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:07,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:07,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1078636057, now seen corresponding path program 1 times [2020-12-22 06:03:07,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:07,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511992204] [2020-12-22 06:03:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:08,073 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 06:03:08,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511992204] [2020-12-22 06:03:08,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:08,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:08,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004385376] [2020-12-22 06:03:08,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:08,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:08,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:08,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:08,077 INFO L87 Difference]: Start difference. First operand 3621 states and 6755 transitions. Second operand 4 states. [2020-12-22 06:03:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:10,641 INFO L93 Difference]: Finished difference Result 9572 states and 17971 transitions. [2020-12-22 06:03:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:10,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 06:03:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:10,650 INFO L225 Difference]: With dead ends: 9572 [2020-12-22 06:03:10,650 INFO L226 Difference]: Without dead ends: 6018 [2020-12-22 06:03:10,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:10,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6018 states. [2020-12-22 06:03:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6018 to 3621. [2020-12-22 06:03:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3621 states. [2020-12-22 06:03:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6749 transitions. [2020-12-22 06:03:10,932 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 6749 transitions. Word has length 82 [2020-12-22 06:03:10,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:10,932 INFO L481 AbstractCegarLoop]: Abstraction has 3621 states and 6749 transitions. [2020-12-22 06:03:10,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 6749 transitions. [2020-12-22 06:03:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:03:10,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:10,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:10,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:03:10,936 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:10,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:10,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1747394921, now seen corresponding path program 1 times [2020-12-22 06:03:10,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:10,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928081914] [2020-12-22 06:03:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:11,032 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 06:03:11,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928081914] [2020-12-22 06:03:11,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:11,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:11,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718922722] [2020-12-22 06:03:11,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:03:11,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:11,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:03:11,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:11,035 INFO L87 Difference]: Start difference. First operand 3621 states and 6749 transitions. Second operand 6 states. [2020-12-22 06:03:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:20,628 INFO L93 Difference]: Finished difference Result 45890 states and 85651 transitions. [2020-12-22 06:03:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:03:20,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-22 06:03:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:20,689 INFO L225 Difference]: With dead ends: 45890 [2020-12-22 06:03:20,689 INFO L226 Difference]: Without dead ends: 42363 [2020-12-22 06:03:20,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:03:20,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42363 states. [2020-12-22 06:03:21,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42363 to 7194. [2020-12-22 06:03:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7194 states. [2020-12-22 06:03:21,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 13442 transitions. [2020-12-22 06:03:21,557 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 13442 transitions. Word has length 84 [2020-12-22 06:03:21,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:21,558 INFO L481 AbstractCegarLoop]: Abstraction has 7194 states and 13442 transitions. [2020-12-22 06:03:21,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:03:21,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 13442 transitions. [2020-12-22 06:03:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:03:21,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:21,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:21,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:03:21,563 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:21,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:21,563 INFO L82 PathProgramCache]: Analyzing trace with hash -508944324, now seen corresponding path program 1 times [2020-12-22 06:03:21,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:21,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986781292] [2020-12-22 06:03:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:21,668 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 06:03:21,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986781292] [2020-12-22 06:03:21,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:21,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:21,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835109212] [2020-12-22 06:03:21,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:21,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:21,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:21,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:21,671 INFO L87 Difference]: Start difference. First operand 7194 states and 13442 transitions. Second operand 4 states. [2020-12-22 06:03:24,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:24,493 INFO L93 Difference]: Finished difference Result 19040 states and 35790 transitions. [2020-12-22 06:03:24,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:24,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-22 06:03:24,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:24,676 INFO L225 Difference]: With dead ends: 19040 [2020-12-22 06:03:24,676 INFO L226 Difference]: Without dead ends: 11973 [2020-12-22 06:03:24,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:24,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11973 states. [2020-12-22 06:03:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11973 to 3621. [2020-12-22 06:03:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3621 states. [2020-12-22 06:03:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6743 transitions. [2020-12-22 06:03:25,145 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 6743 transitions. Word has length 85 [2020-12-22 06:03:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:25,146 INFO L481 AbstractCegarLoop]: Abstraction has 3621 states and 6743 transitions. [2020-12-22 06:03:25,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 6743 transitions. [2020-12-22 06:03:25,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:03:25,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:25,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:25,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:03:25,149 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:25,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:25,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1298731663, now seen corresponding path program 1 times [2020-12-22 06:03:25,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:25,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647938037] [2020-12-22 06:03:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:25,243 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 06:03:25,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647938037] [2020-12-22 06:03:25,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:25,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:25,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841161904] [2020-12-22 06:03:25,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:25,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:25,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:25,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:25,245 INFO L87 Difference]: Start difference. First operand 3621 states and 6743 transitions. Second operand 3 states. [2020-12-22 06:03:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:25,674 INFO L93 Difference]: Finished difference Result 5447 states and 10152 transitions. [2020-12-22 06:03:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:25,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:03:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:25,681 INFO L225 Difference]: With dead ends: 5447 [2020-12-22 06:03:25,682 INFO L226 Difference]: Without dead ends: 3615 [2020-12-22 06:03:25,686 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 06:03:25,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2020-12-22 06:03:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3615. [2020-12-22 06:03:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3615 states. [2020-12-22 06:03:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 6733 transitions. [2020-12-22 06:03:26,092 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 6733 transitions. Word has length 86 [2020-12-22 06:03:26,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:26,092 INFO L481 AbstractCegarLoop]: Abstraction has 3615 states and 6733 transitions. [2020-12-22 06:03:26,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:26,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 6733 transitions. [2020-12-22 06:03:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:03:26,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:26,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:26,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:03:26,095 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash -726355396, now seen corresponding path program 1 times [2020-12-22 06:03:26,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:26,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523841432] [2020-12-22 06:03:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:26,169 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 06:03:26,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523841432] [2020-12-22 06:03:26,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:26,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:26,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966000435] [2020-12-22 06:03:26,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:26,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:26,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:26,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:26,171 INFO L87 Difference]: Start difference. First operand 3615 states and 6733 transitions. Second operand 5 states. [2020-12-22 06:03:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:27,515 INFO L93 Difference]: Finished difference Result 14410 states and 26853 transitions. [2020-12-22 06:03:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:27,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 06:03:27,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:27,532 INFO L225 Difference]: With dead ends: 14410 [2020-12-22 06:03:27,532 INFO L226 Difference]: Without dead ends: 12600 [2020-12-22 06:03:27,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:03:27,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12600 states. [2020-12-22 06:03:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12600 to 5390. [2020-12-22 06:03:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5390 states. [2020-12-22 06:03:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 10034 transitions. [2020-12-22 06:03:28,038 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 10034 transitions. Word has length 88 [2020-12-22 06:03:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:28,039 INFO L481 AbstractCegarLoop]: Abstraction has 5390 states and 10034 transitions. [2020-12-22 06:03:28,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:28,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 10034 transitions. [2020-12-22 06:03:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:03:28,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:28,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:28,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:03:28,043 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:28,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:28,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1041663046, now seen corresponding path program 1 times [2020-12-22 06:03:28,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:28,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824754203] [2020-12-22 06:03:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:28,154 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 06:03:28,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824754203] [2020-12-22 06:03:28,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:28,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:28,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126235262] [2020-12-22 06:03:28,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:28,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:28,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:28,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:28,156 INFO L87 Difference]: Start difference. First operand 5390 states and 10034 transitions. Second operand 5 states. [2020-12-22 06:03:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:28,944 INFO L93 Difference]: Finished difference Result 8156 states and 15170 transitions. [2020-12-22 06:03:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:28,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 06:03:28,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:28,955 INFO L225 Difference]: With dead ends: 8156 [2020-12-22 06:03:28,955 INFO L226 Difference]: Without dead ends: 8143 [2020-12-22 06:03:28,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8143 states. [2020-12-22 06:03:29,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8143 to 5396. [2020-12-22 06:03:29,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5396 states. [2020-12-22 06:03:29,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 10040 transitions. [2020-12-22 06:03:29,417 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 10040 transitions. Word has length 88 [2020-12-22 06:03:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:29,417 INFO L481 AbstractCegarLoop]: Abstraction has 5396 states and 10040 transitions. [2020-12-22 06:03:29,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 10040 transitions. [2020-12-22 06:03:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:03:29,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:29,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:29,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:03:29,422 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:29,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:29,423 INFO L82 PathProgramCache]: Analyzing trace with hash -183106049, now seen corresponding path program 1 times [2020-12-22 06:03:29,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:29,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607966615] [2020-12-22 06:03:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:29,485 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 06:03:29,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607966615] [2020-12-22 06:03:29,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:29,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:29,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231299897] [2020-12-22 06:03:29,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:29,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:29,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:29,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:29,487 INFO L87 Difference]: Start difference. First operand 5396 states and 10040 transitions. Second operand 4 states. [2020-12-22 06:03:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:29,889 INFO L93 Difference]: Finished difference Result 5411 states and 10054 transitions. [2020-12-22 06:03:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:29,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-22 06:03:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:29,896 INFO L225 Difference]: With dead ends: 5411 [2020-12-22 06:03:29,896 INFO L226 Difference]: Without dead ends: 5398 [2020-12-22 06:03:29,897 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 06:03:29,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5398 states. [2020-12-22 06:03:30,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5398 to 5396. [2020-12-22 06:03:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5396 states. [2020-12-22 06:03:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 10038 transitions. [2020-12-22 06:03:30,330 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 10038 transitions. Word has length 90 [2020-12-22 06:03:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:30,331 INFO L481 AbstractCegarLoop]: Abstraction has 5396 states and 10038 transitions. [2020-12-22 06:03:30,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 10038 transitions. [2020-12-22 06:03:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 06:03:30,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:30,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:30,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:03:30,337 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:30,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:30,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1958221190, now seen corresponding path program 1 times [2020-12-22 06:03:30,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:30,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056004232] [2020-12-22 06:03:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:30,417 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 06:03:30,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056004232] [2020-12-22 06:03:30,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:30,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:30,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028584742] [2020-12-22 06:03:30,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:30,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:30,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:30,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:30,419 INFO L87 Difference]: Start difference. First operand 5396 states and 10038 transitions. Second operand 5 states. [2020-12-22 06:03:33,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:33,736 INFO L93 Difference]: Finished difference Result 16761 states and 31036 transitions. [2020-12-22 06:03:33,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:03:33,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-12-22 06:03:33,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:33,754 INFO L225 Difference]: With dead ends: 16761 [2020-12-22 06:03:33,754 INFO L226 Difference]: Without dead ends: 14008 [2020-12-22 06:03:33,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:03:33,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14008 states. [2020-12-22 06:03:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14008 to 5400. [2020-12-22 06:03:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5400 states. [2020-12-22 06:03:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 10042 transitions. [2020-12-22 06:03:34,224 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 10042 transitions. Word has length 97 [2020-12-22 06:03:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:34,225 INFO L481 AbstractCegarLoop]: Abstraction has 5400 states and 10042 transitions. [2020-12-22 06:03:34,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 10042 transitions. [2020-12-22 06:03:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 06:03:34,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:34,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:34,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:03:34,229 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:34,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1994848158, now seen corresponding path program 1 times [2020-12-22 06:03:34,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:34,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754155845] [2020-12-22 06:03:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:34,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754155845] [2020-12-22 06:03:34,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:34,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:34,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143098116] [2020-12-22 06:03:34,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:34,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:34,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:34,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:34,306 INFO L87 Difference]: Start difference. First operand 5400 states and 10042 transitions. Second operand 3 states. [2020-12-22 06:03:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:35,381 INFO L93 Difference]: Finished difference Result 13063 states and 24336 transitions. [2020-12-22 06:03:35,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:35,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-22 06:03:35,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:35,392 INFO L225 Difference]: With dead ends: 13063 [2020-12-22 06:03:35,392 INFO L226 Difference]: Without dead ends: 8668 [2020-12-22 06:03:35,398 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 06:03:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2020-12-22 06:03:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8655. [2020-12-22 06:03:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8655 states. [2020-12-22 06:03:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8655 states to 8655 states and 16067 transitions. [2020-12-22 06:03:36,056 INFO L78 Accepts]: Start accepts. Automaton has 8655 states and 16067 transitions. Word has length 98 [2020-12-22 06:03:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:36,057 INFO L481 AbstractCegarLoop]: Abstraction has 8655 states and 16067 transitions. [2020-12-22 06:03:36,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 8655 states and 16067 transitions. [2020-12-22 06:03:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 06:03:36,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:36,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:03:36,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:03:36,061 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:36,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:36,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1317049385, now seen corresponding path program 1 times [2020-12-22 06:03:36,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:36,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848466195] [2020-12-22 06:03:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:36,137 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 06:03:36,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848466195] [2020-12-22 06:03:36,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:36,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:36,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330465998] [2020-12-22 06:03:36,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:36,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:36,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:36,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:36,139 INFO L87 Difference]: Start difference. First operand 8655 states and 16067 transitions. Second operand 3 states. [2020-12-22 06:03:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:38,827 INFO L93 Difference]: Finished difference Result 21231 states and 39317 transitions. [2020-12-22 06:03:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:38,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-22 06:03:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:38,848 INFO L225 Difference]: With dead ends: 21231 [2020-12-22 06:03:38,849 INFO L226 Difference]: Without dead ends: 14238 [2020-12-22 06:03:38,858 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 06:03:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14238 states. [2020-12-22 06:03:39,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14238 to 8343. [2020-12-22 06:03:39,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8343 states. [2020-12-22 06:03:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8343 states to 8343 states and 15371 transitions. [2020-12-22 06:03:39,630 INFO L78 Accepts]: Start accepts. Automaton has 8343 states and 15371 transitions. Word has length 98 [2020-12-22 06:03:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:39,630 INFO L481 AbstractCegarLoop]: Abstraction has 8343 states and 15371 transitions. [2020-12-22 06:03:39,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:39,630 INFO L276 IsEmpty]: Start isEmpty. Operand 8343 states and 15371 transitions. [2020-12-22 06:03:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 06:03:39,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:39,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:39,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:03:39,635 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:39,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:39,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1220561966, now seen corresponding path program 1 times [2020-12-22 06:03:39,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:39,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667149889] [2020-12-22 06:03:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:39,706 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 06:03:39,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667149889] [2020-12-22 06:03:39,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:39,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:39,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695778757] [2020-12-22 06:03:39,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:39,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:39,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:39,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:39,708 INFO L87 Difference]: Start difference. First operand 8343 states and 15371 transitions. Second operand 5 states. [2020-12-22 06:03:43,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:43,476 INFO L93 Difference]: Finished difference Result 20169 states and 37381 transitions. [2020-12-22 06:03:43,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:03:43,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-12-22 06:03:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:43,495 INFO L225 Difference]: With dead ends: 20169 [2020-12-22 06:03:43,495 INFO L226 Difference]: Without dead ends: 13632 [2020-12-22 06:03:43,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13632 states. [2020-12-22 06:03:44,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13632 to 8343. [2020-12-22 06:03:44,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8343 states. [2020-12-22 06:03:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8343 states to 8343 states and 15075 transitions. [2020-12-22 06:03:44,224 INFO L78 Accepts]: Start accepts. Automaton has 8343 states and 15075 transitions. Word has length 101 [2020-12-22 06:03:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:44,225 INFO L481 AbstractCegarLoop]: Abstraction has 8343 states and 15075 transitions. [2020-12-22 06:03:44,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 8343 states and 15075 transitions. [2020-12-22 06:03:44,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:03:44,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:44,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:44,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:03:44,229 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:44,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:44,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1597652250, now seen corresponding path program 1 times [2020-12-22 06:03:44,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:44,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878485092] [2020-12-22 06:03:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:44,363 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 06:03:44,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878485092] [2020-12-22 06:03:44,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:44,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:44,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69552492] [2020-12-22 06:03:44,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:03:44,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:44,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:03:44,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:44,365 INFO L87 Difference]: Start difference. First operand 8343 states and 15075 transitions. Second operand 6 states. [2020-12-22 06:03:49,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:49,496 INFO L93 Difference]: Finished difference Result 30747 states and 55483 transitions. [2020-12-22 06:03:49,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:03:49,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-12-22 06:03:49,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:49,525 INFO L225 Difference]: With dead ends: 30747 [2020-12-22 06:03:49,525 INFO L226 Difference]: Without dead ends: 24021 [2020-12-22 06:03:49,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:03:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24021 states. [2020-12-22 06:03:51,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24021 to 15199. [2020-12-22 06:03:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15199 states. [2020-12-22 06:03:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15199 states to 15199 states and 26525 transitions. [2020-12-22 06:03:51,037 INFO L78 Accepts]: Start accepts. Automaton has 15199 states and 26525 transitions. Word has length 102 [2020-12-22 06:03:51,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:51,037 INFO L481 AbstractCegarLoop]: Abstraction has 15199 states and 26525 transitions. [2020-12-22 06:03:51,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:03:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 15199 states and 26525 transitions. [2020-12-22 06:03:51,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:03:51,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:51,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:51,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:03:51,043 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash -211448856, now seen corresponding path program 1 times [2020-12-22 06:03:51,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:51,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344024449] [2020-12-22 06:03:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:51,123 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 06:03:51,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344024449] [2020-12-22 06:03:51,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:51,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:51,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480174372] [2020-12-22 06:03:51,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:51,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:51,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:51,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:51,126 INFO L87 Difference]: Start difference. First operand 15199 states and 26525 transitions. Second operand 3 states. [2020-12-22 06:03:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:53,350 INFO L93 Difference]: Finished difference Result 36655 states and 64214 transitions. [2020-12-22 06:03:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:53,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-22 06:03:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:53,386 INFO L225 Difference]: With dead ends: 36655 [2020-12-22 06:03:53,386 INFO L226 Difference]: Without dead ends: 23824 [2020-12-22 06:03:53,399 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 06:03:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23824 states. [2020-12-22 06:03:55,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23824 to 23783. [2020-12-22 06:03:55,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23783 states. [2020-12-22 06:03:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23783 states to 23783 states and 41768 transitions. [2020-12-22 06:03:55,776 INFO L78 Accepts]: Start accepts. Automaton has 23783 states and 41768 transitions. Word has length 102 [2020-12-22 06:03:55,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:55,776 INFO L481 AbstractCegarLoop]: Abstraction has 23783 states and 41768 transitions. [2020-12-22 06:03:55,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:55,776 INFO L276 IsEmpty]: Start isEmpty. Operand 23783 states and 41768 transitions. [2020-12-22 06:03:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 06:03:55,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:55,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:55,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:03:55,780 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:55,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:55,781 INFO L82 PathProgramCache]: Analyzing trace with hash 406115304, now seen corresponding path program 1 times [2020-12-22 06:03:55,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:55,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720123017] [2020-12-22 06:03:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:55,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720123017] [2020-12-22 06:03:55,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:55,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:55,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374372585] [2020-12-22 06:03:55,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:03:55,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:55,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:03:55,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:55,946 INFO L87 Difference]: Start difference. First operand 23783 states and 41768 transitions. Second operand 6 states. [2020-12-22 06:04:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:05,661 INFO L93 Difference]: Finished difference Result 95169 states and 168754 transitions. [2020-12-22 06:04:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:04:05,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-12-22 06:04:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:05,780 INFO L225 Difference]: With dead ends: 95169 [2020-12-22 06:04:05,780 INFO L226 Difference]: Without dead ends: 71480 [2020-12-22 06:04:05,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:04:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71480 states. [2020-12-22 06:04:10,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71480 to 46969. [2020-12-22 06:04:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46969 states. [2020-12-22 06:04:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46969 states to 46969 states and 82551 transitions. [2020-12-22 06:04:10,950 INFO L78 Accepts]: Start accepts. Automaton has 46969 states and 82551 transitions. Word has length 103 [2020-12-22 06:04:10,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:10,951 INFO L481 AbstractCegarLoop]: Abstraction has 46969 states and 82551 transitions. [2020-12-22 06:04:10,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:04:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 46969 states and 82551 transitions. [2020-12-22 06:04:10,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 06:04:10,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:10,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:10,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 06:04:10,958 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:10,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1844676653, now seen corresponding path program 1 times [2020-12-22 06:04:10,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:10,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009106108] [2020-12-22 06:04:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:11,026 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 06:04:11,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009106108] [2020-12-22 06:04:11,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:11,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:11,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681304798] [2020-12-22 06:04:11,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:11,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:11,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:11,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:11,028 INFO L87 Difference]: Start difference. First operand 46969 states and 82551 transitions. Second operand 5 states. [2020-12-22 06:04:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:16,231 INFO L93 Difference]: Finished difference Result 93870 states and 165011 transitions. [2020-12-22 06:04:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:04:16,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 06:04:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:16,389 INFO L225 Difference]: With dead ends: 93870 [2020-12-22 06:04:16,389 INFO L226 Difference]: Without dead ends: 46980 [2020-12-22 06:04:16,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 06:04:16,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46980 states. [2020-12-22 06:04:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46980 to 46965. [2020-12-22 06:04:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46965 states. [2020-12-22 06:04:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46965 states to 46965 states and 82541 transitions. [2020-12-22 06:04:21,479 INFO L78 Accepts]: Start accepts. Automaton has 46965 states and 82541 transitions. Word has length 105 [2020-12-22 06:04:21,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:21,479 INFO L481 AbstractCegarLoop]: Abstraction has 46965 states and 82541 transitions. [2020-12-22 06:04:21,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:21,480 INFO L276 IsEmpty]: Start isEmpty. Operand 46965 states and 82541 transitions. [2020-12-22 06:04:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 06:04:21,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:21,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:21,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 06:04:21,487 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash -833402693, now seen corresponding path program 1 times [2020-12-22 06:04:21,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:21,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539426415] [2020-12-22 06:04:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:21,615 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 06:04:21,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539426415] [2020-12-22 06:04:21,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:21,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:21,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833267497] [2020-12-22 06:04:21,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:21,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:21,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:21,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:21,617 INFO L87 Difference]: Start difference. First operand 46965 states and 82541 transitions. Second operand 4 states. [2020-12-22 06:04:30,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:30,969 INFO L93 Difference]: Finished difference Result 131509 states and 231268 transitions. [2020-12-22 06:04:30,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:30,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 06:04:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:31,094 INFO L225 Difference]: With dead ends: 131509 [2020-12-22 06:04:31,094 INFO L226 Difference]: Without dead ends: 84694 [2020-12-22 06:04:31,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:31,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84694 states. [2020-12-22 06:04:38,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84694 to 63288. [2020-12-22 06:04:38,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63288 states. [2020-12-22 06:04:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63288 states to 63288 states and 110478 transitions. [2020-12-22 06:04:38,426 INFO L78 Accepts]: Start accepts. Automaton has 63288 states and 110478 transitions. Word has length 106 [2020-12-22 06:04:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:38,426 INFO L481 AbstractCegarLoop]: Abstraction has 63288 states and 110478 transitions. [2020-12-22 06:04:38,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 63288 states and 110478 transitions. [2020-12-22 06:04:38,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 06:04:38,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:38,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:38,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 06:04:38,434 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:38,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:38,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1447452521, now seen corresponding path program 1 times [2020-12-22 06:04:38,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:38,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362852124] [2020-12-22 06:04:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:38,497 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 06:04:38,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362852124] [2020-12-22 06:04:38,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:38,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:38,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005136888] [2020-12-22 06:04:38,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:38,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:38,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:38,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:38,499 INFO L87 Difference]: Start difference. First operand 63288 states and 110478 transitions. Second operand 5 states. [2020-12-22 06:04:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:42,269 INFO L93 Difference]: Finished difference Result 94551 states and 165081 transitions. [2020-12-22 06:04:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:04:42,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-12-22 06:04:42,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:42,312 INFO L225 Difference]: With dead ends: 94551 [2020-12-22 06:04:42,313 INFO L226 Difference]: Without dead ends: 31293 [2020-12-22 06:04:42,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:04:42,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31293 states. [2020-12-22 06:04:45,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31293 to 31293. [2020-12-22 06:04:45,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31293 states. [2020-12-22 06:04:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31293 states to 31293 states and 54638 transitions. [2020-12-22 06:04:46,018 INFO L78 Accepts]: Start accepts. Automaton has 31293 states and 54638 transitions. Word has length 106 [2020-12-22 06:04:46,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:46,018 INFO L481 AbstractCegarLoop]: Abstraction has 31293 states and 54638 transitions. [2020-12-22 06:04:46,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 31293 states and 54638 transitions. [2020-12-22 06:04:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:04:46,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:46,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:46,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 06:04:46,023 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:46,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:46,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1065012452, now seen corresponding path program 1 times [2020-12-22 06:04:46,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:46,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884077388] [2020-12-22 06:04:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:46,099 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 06:04:46,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884077388] [2020-12-22 06:04:46,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:46,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:46,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195358748] [2020-12-22 06:04:46,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:46,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:46,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:46,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:46,101 INFO L87 Difference]: Start difference. First operand 31293 states and 54638 transitions. Second operand 5 states. [2020-12-22 06:05:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:00,977 INFO L93 Difference]: Finished difference Result 138698 states and 242253 transitions. [2020-12-22 06:05:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:05:00,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-22 06:05:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:01,304 INFO L225 Difference]: With dead ends: 138698 [2020-12-22 06:05:01,304 INFO L226 Difference]: Without dead ends: 107482 [2020-12-22 06:05:01,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:05:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107482 states. [2020-12-22 06:05:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107482 to 31349. [2020-12-22 06:05:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31349 states. [2020-12-22 06:05:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31349 states to 31349 states and 54694 transitions. [2020-12-22 06:05:05,967 INFO L78 Accepts]: Start accepts. Automaton has 31349 states and 54694 transitions. Word has length 107 [2020-12-22 06:05:05,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:05,967 INFO L481 AbstractCegarLoop]: Abstraction has 31349 states and 54694 transitions. [2020-12-22 06:05:05,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 31349 states and 54694 transitions. [2020-12-22 06:05:05,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 06:05:05,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:05,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:05,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 06:05:05,971 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:05,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:05,971 INFO L82 PathProgramCache]: Analyzing trace with hash -79358499, now seen corresponding path program 1 times [2020-12-22 06:05:05,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:05,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125649390] [2020-12-22 06:05:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:06,069 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 06:05:06,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125649390] [2020-12-22 06:05:06,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:06,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:06,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477128429] [2020-12-22 06:05:06,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:06,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:06,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:06,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:06,074 INFO L87 Difference]: Start difference. First operand 31349 states and 54694 transitions. Second operand 4 states. [2020-12-22 06:05:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:15,567 INFO L93 Difference]: Finished difference Result 87775 states and 155207 transitions. [2020-12-22 06:05:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:05:15,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-12-22 06:05:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:15,648 INFO L225 Difference]: With dead ends: 87775 [2020-12-22 06:05:15,649 INFO L226 Difference]: Without dead ends: 56496 [2020-12-22 06:05:15,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:15,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56496 states. [2020-12-22 06:05:20,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56496 to 38557. [2020-12-22 06:05:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38557 states. [2020-12-22 06:05:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38557 states to 38557 states and 66366 transitions. [2020-12-22 06:05:20,829 INFO L78 Accepts]: Start accepts. Automaton has 38557 states and 66366 transitions. Word has length 108 [2020-12-22 06:05:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:20,830 INFO L481 AbstractCegarLoop]: Abstraction has 38557 states and 66366 transitions. [2020-12-22 06:05:20,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 38557 states and 66366 transitions. [2020-12-22 06:05:20,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:05:20,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:20,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:20,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 06:05:20,834 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:20,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:20,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1418033947, now seen corresponding path program 1 times [2020-12-22 06:05:20,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:20,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308988399] [2020-12-22 06:05:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:20,907 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 06:05:20,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308988399] [2020-12-22 06:05:20,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:20,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:20,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803308970] [2020-12-22 06:05:20,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:20,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:20,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:20,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:20,910 INFO L87 Difference]: Start difference. First operand 38557 states and 66366 transitions. Second operand 5 states. [2020-12-22 06:05:40,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:40,290 INFO L93 Difference]: Finished difference Result 187335 states and 322285 transitions. [2020-12-22 06:05:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:05:40,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 06:05:40,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:40,699 INFO L225 Difference]: With dead ends: 187335 [2020-12-22 06:05:40,699 INFO L226 Difference]: Without dead ends: 148855 [2020-12-22 06:05:40,753 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 06:05:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148855 states. [2020-12-22 06:05:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148855 to 38625. [2020-12-22 06:05:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38625 states. [2020-12-22 06:05:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38625 states to 38625 states and 66434 transitions. [2020-12-22 06:05:46,653 INFO L78 Accepts]: Start accepts. Automaton has 38625 states and 66434 transitions. Word has length 110 [2020-12-22 06:05:46,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:46,653 INFO L481 AbstractCegarLoop]: Abstraction has 38625 states and 66434 transitions. [2020-12-22 06:05:46,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 38625 states and 66434 transitions. [2020-12-22 06:05:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:05:46,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:46,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:46,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 06:05:46,656 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:46,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1899114205, now seen corresponding path program 1 times [2020-12-22 06:05:46,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:46,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009818038] [2020-12-22 06:05:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:46,823 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 06:05:46,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009818038] [2020-12-22 06:05:46,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:46,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:46,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167740150] [2020-12-22 06:05:46,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:05:46,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:46,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:05:46,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:05:46,825 INFO L87 Difference]: Start difference. First operand 38625 states and 66434 transitions. Second operand 6 states. [2020-12-22 06:05:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:57,603 INFO L93 Difference]: Finished difference Result 98172 states and 169159 transitions. [2020-12-22 06:05:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:05:57,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-12-22 06:05:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:57,689 INFO L225 Difference]: With dead ends: 98172 [2020-12-22 06:05:57,689 INFO L226 Difference]: Without dead ends: 65137 [2020-12-22 06:05:57,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:05:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65137 states. [2020-12-22 06:06:03,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65137 to 38537. [2020-12-22 06:06:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38537 states. [2020-12-22 06:06:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38537 states to 38537 states and 66258 transitions. [2020-12-22 06:06:03,361 INFO L78 Accepts]: Start accepts. Automaton has 38537 states and 66258 transitions. Word has length 110 [2020-12-22 06:06:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:03,361 INFO L481 AbstractCegarLoop]: Abstraction has 38537 states and 66258 transitions. [2020-12-22 06:06:03,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:06:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 38537 states and 66258 transitions. [2020-12-22 06:06:03,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 06:06:03,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:03,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:06:03,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 06:06:03,366 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:03,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:03,367 INFO L82 PathProgramCache]: Analyzing trace with hash 809491801, now seen corresponding path program 1 times [2020-12-22 06:06:03,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:03,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054307528] [2020-12-22 06:06:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:03,441 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 06:06:03,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054307528] [2020-12-22 06:06:03,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:03,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:06:03,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23812922] [2020-12-22 06:06:03,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:03,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:03,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:03,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:03,444 INFO L87 Difference]: Start difference. First operand 38537 states and 66258 transitions. Second operand 3 states. [2020-12-22 06:06:12,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:12,846 INFO L93 Difference]: Finished difference Result 101880 states and 175387 transitions. [2020-12-22 06:06:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:12,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-22 06:06:12,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:12,936 INFO L225 Difference]: With dead ends: 101880 [2020-12-22 06:06:12,937 INFO L226 Difference]: Without dead ends: 65246 [2020-12-22 06:06:12,967 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 06:06:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65246 states. [2020-12-22 06:06:22,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65246 to 65233. [2020-12-22 06:06:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65233 states. [2020-12-22 06:06:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65233 states to 65233 states and 112328 transitions. [2020-12-22 06:06:22,135 INFO L78 Accepts]: Start accepts. Automaton has 65233 states and 112328 transitions. Word has length 117 [2020-12-22 06:06:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:22,136 INFO L481 AbstractCegarLoop]: Abstraction has 65233 states and 112328 transitions. [2020-12-22 06:06:22,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 65233 states and 112328 transitions. [2020-12-22 06:06:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 06:06:22,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:22,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:06:22,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:06:22,144 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:22,145 INFO L82 PathProgramCache]: Analyzing trace with hash 112939318, now seen corresponding path program 1 times [2020-12-22 06:06:22,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:22,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894149805] [2020-12-22 06:06:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:22,228 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 06:06:22,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894149805] [2020-12-22 06:06:22,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:22,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:06:22,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327046685] [2020-12-22 06:06:22,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:22,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:22,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:22,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:22,231 INFO L87 Difference]: Start difference. First operand 65233 states and 112328 transitions. Second operand 3 states.