/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_spec3_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:10:16,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:10:16,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:10:16,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:10:16,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:10:16,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:10:16,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:10:16,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:10:16,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:10:16,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:10:16,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:10:16,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:10:16,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:10:16,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:10:16,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:10:16,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:10:16,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:10:16,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:10:16,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:10:16,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:10:16,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:10:16,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:10:16,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:10:16,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:10:16,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:10:16,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:10:16,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:10:16,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:10:16,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:10:16,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:10:16,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:10:16,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:10:16,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:10:16,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:10:16,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:10:16,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:10:16,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:10:16,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:10:16,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:10:16,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:10:16,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:10:16,288 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:10:16,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:10:16,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:10:16,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:10:16,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:10:16,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:10:16,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:10:16,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:10:16,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:10:16,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:10:16,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:10:16,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:10:16,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:10:16,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:10:16,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:10:16,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:10:16,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:10:16,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:10:16,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:10:16,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:10:16,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:10:16,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:10:16,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:10:16,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:10:16,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:10:16,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:10:16,760 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:10:16,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2020-12-22 06:10:16,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50b0ce558/d710239e6fb046bf95855aede00a5e8d/FLAG5209f200a [2020-12-22 06:10:17,805 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:10:17,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2020-12-22 06:10:17,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50b0ce558/d710239e6fb046bf95855aede00a5e8d/FLAG5209f200a [2020-12-22 06:10:17,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50b0ce558/d710239e6fb046bf95855aede00a5e8d [2020-12-22 06:10:17,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:10:17,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:10:17,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:17,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:10:17,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:10:17,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:17" (1/1) ... [2020-12-22 06:10:17,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73dd1968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:17, skipping insertion in model container [2020-12-22 06:10:17,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:17" (1/1) ... [2020-12-22 06:10:17,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:10:17,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:10:18,217 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_spec3_product23.cil.c[5474,5487] [2020-12-22 06:10:18,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:18,750 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:10:18,773 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_spec3_product23.cil.c[5474,5487] [2020-12-22 06:10:18,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:19,031 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:10:19,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19 WrapperNode [2020-12-22 06:10:19,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:19,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:19,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:10:19,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:10:19,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (1/1) ... [2020-12-22 06:10:19,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (1/1) ... [2020-12-22 06:10:19,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:19,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:10:19,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:10:19,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:10:19,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (1/1) ... [2020-12-22 06:10:19,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (1/1) ... [2020-12-22 06:10:20,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (1/1) ... [2020-12-22 06:10:20,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (1/1) ... [2020-12-22 06:10:20,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (1/1) ... [2020-12-22 06:10:20,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (1/1) ... [2020-12-22 06:10:20,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (1/1) ... [2020-12-22 06:10:20,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:10:20,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:10:20,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:10:20,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:10:20,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (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 06:10:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:10:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:10:20,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:10:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:10:37,982 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:10:37,983 INFO L299 CfgBuilder]: Removed 2077 assume(true) statements. [2020-12-22 06:10:37,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:10:37 BoogieIcfgContainer [2020-12-22 06:10:37,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:10:37,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:10:37,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:10:37,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:10:38,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:10:17" (1/3) ... [2020-12-22 06:10:38,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bafa8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:10:38, skipping insertion in model container [2020-12-22 06:10:38,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:19" (2/3) ... [2020-12-22 06:10:38,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bafa8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:10:38, skipping insertion in model container [2020-12-22 06:10:38,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:10:37" (3/3) ... [2020-12-22 06:10:38,003 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2020-12-22 06:10:38,010 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:10:38,019 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:10:38,038 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:10:38,102 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:10:38,102 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:10:38,102 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:10:38,103 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:10:38,103 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:10:38,103 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:10:38,103 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:10:38,103 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:10:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 8983 states. [2020-12-22 06:10:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:10:38,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:38,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:10:38,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:38,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:38,260 INFO L82 PathProgramCache]: Analyzing trace with hash -610179148, now seen corresponding path program 1 times [2020-12-22 06:10:38,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:38,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301561307] [2020-12-22 06:10:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:38,775 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 06:10:38,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301561307] [2020-12-22 06:10:38,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:38,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:38,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323065830] [2020-12-22 06:10:38,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:38,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:38,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:38,947 INFO L87 Difference]: Start difference. First operand 8983 states. Second operand 4 states. [2020-12-22 06:10:40,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:40,487 INFO L93 Difference]: Finished difference Result 35757 states and 67409 transitions. [2020-12-22 06:10:40,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:40,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:10:40,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:40,709 INFO L225 Difference]: With dead ends: 35757 [2020-12-22 06:10:40,710 INFO L226 Difference]: Without dead ends: 26787 [2020-12-22 06:10:40,742 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 06:10:40,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26787 states. [2020-12-22 06:10:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26787 to 8991. [2020-12-22 06:10:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8991 states. [2020-12-22 06:10:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8991 states to 8991 states and 16928 transitions. [2020-12-22 06:10:41,393 INFO L78 Accepts]: Start accepts. Automaton has 8991 states and 16928 transitions. Word has length 47 [2020-12-22 06:10:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:41,394 INFO L481 AbstractCegarLoop]: Abstraction has 8991 states and 16928 transitions. [2020-12-22 06:10:41,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 8991 states and 16928 transitions. [2020-12-22 06:10:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:10:41,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:41,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:10:41,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:10:41,405 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:41,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1976885613, now seen corresponding path program 1 times [2020-12-22 06:10:41,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:41,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738568970] [2020-12-22 06:10:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:41,586 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 06:10:41,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738568970] [2020-12-22 06:10:41,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:41,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:10:41,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743784011] [2020-12-22 06:10:41,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:10:41,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:41,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:10:41,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:10:41,592 INFO L87 Difference]: Start difference. First operand 8991 states and 16928 transitions. Second operand 3 states. [2020-12-22 06:10:41,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:41,907 INFO L93 Difference]: Finished difference Result 17898 states and 33703 transitions. [2020-12-22 06:10:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:10:41,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:10:41,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:41,936 INFO L225 Difference]: With dead ends: 17898 [2020-12-22 06:10:41,936 INFO L226 Difference]: Without dead ends: 8921 [2020-12-22 06:10:41,954 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 06:10:41,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8921 states. [2020-12-22 06:10:42,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8921 to 8921. [2020-12-22 06:10:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8921 states. [2020-12-22 06:10:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 16788 transitions. [2020-12-22 06:10:42,489 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 16788 transitions. Word has length 48 [2020-12-22 06:10:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:42,489 INFO L481 AbstractCegarLoop]: Abstraction has 8921 states and 16788 transitions. [2020-12-22 06:10:42,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:10:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 16788 transitions. [2020-12-22 06:10:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:10:42,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:42,495 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] [2020-12-22 06:10:42,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:10:42,496 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:42,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1378256444, now seen corresponding path program 1 times [2020-12-22 06:10:42,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:42,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196422475] [2020-12-22 06:10:42,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:42,601 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 06:10:42,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196422475] [2020-12-22 06:10:42,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:42,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:42,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759208089] [2020-12-22 06:10:42,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:42,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:42,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:42,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:42,610 INFO L87 Difference]: Start difference. First operand 8921 states and 16788 transitions. Second operand 4 states. [2020-12-22 06:10:43,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:43,207 INFO L93 Difference]: Finished difference Result 17816 states and 33539 transitions. [2020-12-22 06:10:43,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:43,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:10:43,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:43,241 INFO L225 Difference]: With dead ends: 17816 [2020-12-22 06:10:43,241 INFO L226 Difference]: Without dead ends: 8921 [2020-12-22 06:10:43,257 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 06:10:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8921 states. [2020-12-22 06:10:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8921 to 8921. [2020-12-22 06:10:43,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8921 states. [2020-12-22 06:10:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 16786 transitions. [2020-12-22 06:10:43,650 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 16786 transitions. Word has length 51 [2020-12-22 06:10:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:43,658 INFO L481 AbstractCegarLoop]: Abstraction has 8921 states and 16786 transitions. [2020-12-22 06:10:43,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 16786 transitions. [2020-12-22 06:10:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:10:43,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:43,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:10:43,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:10:43,662 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:43,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:43,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1068240097, now seen corresponding path program 1 times [2020-12-22 06:10:43,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:43,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864212258] [2020-12-22 06:10:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:43,795 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 06:10:43,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864212258] [2020-12-22 06:10:43,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:43,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:43,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413590691] [2020-12-22 06:10:43,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:43,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:43,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:43,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:43,800 INFO L87 Difference]: Start difference. First operand 8921 states and 16786 transitions. Second operand 4 states. [2020-12-22 06:10:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:44,345 INFO L93 Difference]: Finished difference Result 17816 states and 33536 transitions. [2020-12-22 06:10:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:44,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:10:44,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:44,375 INFO L225 Difference]: With dead ends: 17816 [2020-12-22 06:10:44,376 INFO L226 Difference]: Without dead ends: 8921 [2020-12-22 06:10:44,392 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 06:10:44,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8921 states. [2020-12-22 06:10:44,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8921 to 8921. [2020-12-22 06:10:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8921 states. [2020-12-22 06:10:44,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 16784 transitions. [2020-12-22 06:10:44,795 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 16784 transitions. Word has length 52 [2020-12-22 06:10:44,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:44,795 INFO L481 AbstractCegarLoop]: Abstraction has 8921 states and 16784 transitions. [2020-12-22 06:10:44,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 16784 transitions. [2020-12-22 06:10:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:10:44,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:44,798 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 06:10:44,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:10:44,798 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:44,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:44,799 INFO L82 PathProgramCache]: Analyzing trace with hash 85137825, now seen corresponding path program 1 times [2020-12-22 06:10:44,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:44,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416268819] [2020-12-22 06:10:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:44,911 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 06:10:44,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416268819] [2020-12-22 06:10:44,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:44,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:44,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991895255] [2020-12-22 06:10:44,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:44,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:44,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:44,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:44,914 INFO L87 Difference]: Start difference. First operand 8921 states and 16784 transitions. Second operand 4 states. [2020-12-22 06:10:45,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:45,459 INFO L93 Difference]: Finished difference Result 17816 states and 33533 transitions. [2020-12-22 06:10:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:45,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:10:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:45,494 INFO L225 Difference]: With dead ends: 17816 [2020-12-22 06:10:45,494 INFO L226 Difference]: Without dead ends: 8921 [2020-12-22 06:10:45,510 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 06:10:45,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8921 states. [2020-12-22 06:10:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8921 to 8921. [2020-12-22 06:10:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8921 states. [2020-12-22 06:10:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 16782 transitions. [2020-12-22 06:10:45,924 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 16782 transitions. Word has length 53 [2020-12-22 06:10:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:45,925 INFO L481 AbstractCegarLoop]: Abstraction has 8921 states and 16782 transitions. [2020-12-22 06:10:45,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 16782 transitions. [2020-12-22 06:10:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:10:45,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:45,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:10:45,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:10:45,929 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:45,930 INFO L82 PathProgramCache]: Analyzing trace with hash -288791642, now seen corresponding path program 1 times [2020-12-22 06:10:45,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:45,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339023149] [2020-12-22 06:10:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:46,032 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 06:10:46,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339023149] [2020-12-22 06:10:46,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:46,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:46,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387171587] [2020-12-22 06:10:46,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:46,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:46,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:46,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:46,036 INFO L87 Difference]: Start difference. First operand 8921 states and 16782 transitions. Second operand 4 states. [2020-12-22 06:10:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:46,544 INFO L93 Difference]: Finished difference Result 17816 states and 33530 transitions. [2020-12-22 06:10:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:46,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:10:46,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:46,574 INFO L225 Difference]: With dead ends: 17816 [2020-12-22 06:10:46,575 INFO L226 Difference]: Without dead ends: 8921 [2020-12-22 06:10:46,589 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 06:10:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8921 states. [2020-12-22 06:10:46,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8921 to 8921. [2020-12-22 06:10:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8921 states. [2020-12-22 06:10:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 16780 transitions. [2020-12-22 06:10:46,888 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 16780 transitions. Word has length 54 [2020-12-22 06:10:46,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:46,890 INFO L481 AbstractCegarLoop]: Abstraction has 8921 states and 16780 transitions. [2020-12-22 06:10:46,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 16780 transitions. [2020-12-22 06:10:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:10:46,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:46,892 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] [2020-12-22 06:10:46,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:10:46,893 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:46,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1041766662, now seen corresponding path program 1 times [2020-12-22 06:10:46,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:46,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420321594] [2020-12-22 06:10:46,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:47,116 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 06:10:47,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420321594] [2020-12-22 06:10:47,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:47,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:10:47,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579726836] [2020-12-22 06:10:47,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:10:47,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:47,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:10:47,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:10:47,118 INFO L87 Difference]: Start difference. First operand 8921 states and 16780 transitions. Second operand 5 states. [2020-12-22 06:10:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:48,819 INFO L93 Difference]: Finished difference Result 25117 states and 47119 transitions. [2020-12-22 06:10:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:10:48,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:10:48,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:48,933 INFO L225 Difference]: With dead ends: 25117 [2020-12-22 06:10:48,933 INFO L226 Difference]: Without dead ends: 16266 [2020-12-22 06:10:48,948 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 06:10:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16266 states. [2020-12-22 06:10:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16266 to 15801. [2020-12-22 06:10:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15801 states. [2020-12-22 06:10:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15801 states to 15801 states and 29734 transitions. [2020-12-22 06:10:49,607 INFO L78 Accepts]: Start accepts. Automaton has 15801 states and 29734 transitions. Word has length 55 [2020-12-22 06:10:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:49,607 INFO L481 AbstractCegarLoop]: Abstraction has 15801 states and 29734 transitions. [2020-12-22 06:10:49,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:10:49,608 INFO L276 IsEmpty]: Start isEmpty. Operand 15801 states and 29734 transitions. [2020-12-22 06:10:49,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:10:49,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:49,610 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] [2020-12-22 06:10:49,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:10:49,610 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:49,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:49,611 INFO L82 PathProgramCache]: Analyzing trace with hash 282176587, now seen corresponding path program 1 times [2020-12-22 06:10:49,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:49,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162926061] [2020-12-22 06:10:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:49,689 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 06:10:49,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162926061] [2020-12-22 06:10:49,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:49,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:10:49,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472334547] [2020-12-22 06:10:49,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:10:49,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:49,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:10:49,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:10:49,693 INFO L87 Difference]: Start difference. First operand 15801 states and 29734 transitions. Second operand 5 states. [2020-12-22 06:10:56,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:56,659 INFO L93 Difference]: Finished difference Result 129698 states and 244119 transitions. [2020-12-22 06:10:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:10:56,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:10:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:57,139 INFO L225 Difference]: With dead ends: 129698 [2020-12-22 06:10:57,139 INFO L226 Difference]: Without dead ends: 113967 [2020-12-22 06:10:57,190 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 06:10:57,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113967 states. [2020-12-22 06:10:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113967 to 29137. [2020-12-22 06:10:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29137 states. [2020-12-22 06:10:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29137 states to 29137 states and 54723 transitions. [2020-12-22 06:10:59,467 INFO L78 Accepts]: Start accepts. Automaton has 29137 states and 54723 transitions. Word has length 55 [2020-12-22 06:10:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:59,468 INFO L481 AbstractCegarLoop]: Abstraction has 29137 states and 54723 transitions. [2020-12-22 06:10:59,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:10:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 29137 states and 54723 transitions. [2020-12-22 06:10:59,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:10:59,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:59,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:10:59,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:10:59,471 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:59,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:59,472 INFO L82 PathProgramCache]: Analyzing trace with hash 2131918927, now seen corresponding path program 1 times [2020-12-22 06:10:59,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:59,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640520799] [2020-12-22 06:10:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:59,534 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 06:10:59,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640520799] [2020-12-22 06:10:59,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:59,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:10:59,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522328582] [2020-12-22 06:10:59,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:10:59,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:59,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:10:59,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:10:59,537 INFO L87 Difference]: Start difference. First operand 29137 states and 54723 transitions. Second operand 3 states. [2020-12-22 06:11:02,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:02,190 INFO L93 Difference]: Finished difference Result 86251 states and 161973 transitions. [2020-12-22 06:11:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:02,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:11:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:02,294 INFO L225 Difference]: With dead ends: 86251 [2020-12-22 06:11:02,295 INFO L226 Difference]: Without dead ends: 57146 [2020-12-22 06:11:02,335 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 06:11:02,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57146 states. [2020-12-22 06:11:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57146 to 29013. [2020-12-22 06:11:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29013 states. [2020-12-22 06:11:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29013 states to 29013 states and 54475 transitions. [2020-12-22 06:11:03,770 INFO L78 Accepts]: Start accepts. Automaton has 29013 states and 54475 transitions. Word has length 56 [2020-12-22 06:11:03,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:03,770 INFO L481 AbstractCegarLoop]: Abstraction has 29013 states and 54475 transitions. [2020-12-22 06:11:03,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:03,771 INFO L276 IsEmpty]: Start isEmpty. Operand 29013 states and 54475 transitions. [2020-12-22 06:11:03,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:11:03,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:03,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:11:03,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:11:03,773 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:03,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:03,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1503834706, now seen corresponding path program 1 times [2020-12-22 06:11:03,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:03,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755592376] [2020-12-22 06:11:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:03,860 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 06:11:03,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755592376] [2020-12-22 06:11:03,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:03,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:03,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247084528] [2020-12-22 06:11:03,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:03,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:03,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:03,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:03,862 INFO L87 Difference]: Start difference. First operand 29013 states and 54475 transitions. Second operand 5 states. [2020-12-22 06:11:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:10,102 INFO L93 Difference]: Finished difference Result 67724 states and 126967 transitions. [2020-12-22 06:11:10,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:11:10,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-22 06:11:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:10,155 INFO L225 Difference]: With dead ends: 67724 [2020-12-22 06:11:10,155 INFO L226 Difference]: Without dead ends: 38745 [2020-12-22 06:11:10,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 06:11:10,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38745 states. [2020-12-22 06:11:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38745 to 38327. [2020-12-22 06:11:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38327 states. [2020-12-22 06:11:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38327 states to 38327 states and 70740 transitions. [2020-12-22 06:11:11,954 INFO L78 Accepts]: Start accepts. Automaton has 38327 states and 70740 transitions. Word has length 56 [2020-12-22 06:11:11,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:11,954 INFO L481 AbstractCegarLoop]: Abstraction has 38327 states and 70740 transitions. [2020-12-22 06:11:11,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 38327 states and 70740 transitions. [2020-12-22 06:11:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:11:11,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:11,956 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] [2020-12-22 06:11:11,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:11:11,957 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:11,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:11,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1216489331, now seen corresponding path program 1 times [2020-12-22 06:11:11,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:11,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750268079] [2020-12-22 06:11:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:11:12,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750268079] [2020-12-22 06:11:12,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:12,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:11:12,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384704710] [2020-12-22 06:11:12,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:11:12,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:12,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:11:12,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:11:12,042 INFO L87 Difference]: Start difference. First operand 38327 states and 70740 transitions. Second operand 6 states. [2020-12-22 06:11:18,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:18,433 INFO L93 Difference]: Finished difference Result 114850 states and 211460 transitions. [2020-12-22 06:11:18,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 06:11:18,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 06:11:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:18,535 INFO L225 Difference]: With dead ends: 114850 [2020-12-22 06:11:18,535 INFO L226 Difference]: Without dead ends: 76563 [2020-12-22 06:11:18,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:11:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76563 states. [2020-12-22 06:11:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76563 to 38327. [2020-12-22 06:11:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38327 states. [2020-12-22 06:11:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38327 states to 38327 states and 70629 transitions. [2020-12-22 06:11:20,425 INFO L78 Accepts]: Start accepts. Automaton has 38327 states and 70629 transitions. Word has length 59 [2020-12-22 06:11:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:20,425 INFO L481 AbstractCegarLoop]: Abstraction has 38327 states and 70629 transitions. [2020-12-22 06:11:20,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:11:20,426 INFO L276 IsEmpty]: Start isEmpty. Operand 38327 states and 70629 transitions. [2020-12-22 06:11:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:11:20,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:20,428 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 06:11:20,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:11:20,428 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:20,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:20,429 INFO L82 PathProgramCache]: Analyzing trace with hash 745688846, now seen corresponding path program 1 times [2020-12-22 06:11:20,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:20,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316888265] [2020-12-22 06:11:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:20,506 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 06:11:20,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316888265] [2020-12-22 06:11:20,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:20,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:20,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216306409] [2020-12-22 06:11:20,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:20,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:20,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:20,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:20,509 INFO L87 Difference]: Start difference. First operand 38327 states and 70629 transitions. Second operand 5 states. [2020-12-22 06:11:32,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:32,435 INFO L93 Difference]: Finished difference Result 323872 states and 597941 transitions. [2020-12-22 06:11:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:11:32,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 06:11:32,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:33,010 INFO L225 Difference]: With dead ends: 323872 [2020-12-22 06:11:33,010 INFO L226 Difference]: Without dead ends: 285604 [2020-12-22 06:11:33,327 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 06:11:33,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285604 states. [2020-12-22 06:11:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285604 to 73145. [2020-12-22 06:11:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73145 states. [2020-12-22 06:11:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73145 states to 73145 states and 134573 transitions. [2020-12-22 06:11:37,524 INFO L78 Accepts]: Start accepts. Automaton has 73145 states and 134573 transitions. Word has length 60 [2020-12-22 06:11:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:37,526 INFO L481 AbstractCegarLoop]: Abstraction has 73145 states and 134573 transitions. [2020-12-22 06:11:37,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand 73145 states and 134573 transitions. [2020-12-22 06:11:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:11:37,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:37,528 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 06:11:37,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:11:37,528 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:37,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:37,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1793683112, now seen corresponding path program 1 times [2020-12-22 06:11:37,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:37,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69071502] [2020-12-22 06:11:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:37,597 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 06:11:37,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69071502] [2020-12-22 06:11:37,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:37,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:37,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347283460] [2020-12-22 06:11:37,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:37,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:37,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:37,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:37,600 INFO L87 Difference]: Start difference. First operand 73145 states and 134573 transitions. Second operand 3 states. [2020-12-22 06:11:43,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:43,406 INFO L93 Difference]: Finished difference Result 216818 states and 399119 transitions. [2020-12-22 06:11:43,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:43,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:11:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:43,679 INFO L225 Difference]: With dead ends: 216818 [2020-12-22 06:11:43,680 INFO L226 Difference]: Without dead ends: 143710 [2020-12-22 06:11:43,745 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 06:11:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143710 states. [2020-12-22 06:11:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143710 to 72891. [2020-12-22 06:11:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72891 states. [2020-12-22 06:11:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72891 states to 72891 states and 134072 transitions. [2020-12-22 06:11:47,317 INFO L78 Accepts]: Start accepts. Automaton has 72891 states and 134072 transitions. Word has length 61 [2020-12-22 06:11:47,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:47,317 INFO L481 AbstractCegarLoop]: Abstraction has 72891 states and 134072 transitions. [2020-12-22 06:11:47,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 72891 states and 134072 transitions. [2020-12-22 06:11:47,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:11:47,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:47,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:11:47,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:11:47,326 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:47,327 INFO L82 PathProgramCache]: Analyzing trace with hash -643997294, now seen corresponding path program 1 times [2020-12-22 06:11:47,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:47,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296105107] [2020-12-22 06:11:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:47,392 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 06:11:47,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296105107] [2020-12-22 06:11:47,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:47,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:47,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688201109] [2020-12-22 06:11:47,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:47,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:47,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:47,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:47,394 INFO L87 Difference]: Start difference. First operand 72891 states and 134072 transitions. Second operand 3 states. [2020-12-22 06:11:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:53,164 INFO L93 Difference]: Finished difference Result 216317 states and 398146 transitions. [2020-12-22 06:11:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:53,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:11:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:53,416 INFO L225 Difference]: With dead ends: 216317 [2020-12-22 06:11:53,416 INFO L226 Difference]: Without dead ends: 143469 [2020-12-22 06:11:53,493 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 06:11:53,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143469 states. [2020-12-22 06:11:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143469 to 72779. [2020-12-22 06:11:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72779 states. [2020-12-22 06:11:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72779 states to 72779 states and 133736 transitions. [2020-12-22 06:11:57,003 INFO L78 Accepts]: Start accepts. Automaton has 72779 states and 133736 transitions. Word has length 65 [2020-12-22 06:11:57,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:57,003 INFO L481 AbstractCegarLoop]: Abstraction has 72779 states and 133736 transitions. [2020-12-22 06:11:57,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 72779 states and 133736 transitions. [2020-12-22 06:11:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:11:57,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:57,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:11:57,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:11:57,010 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:57,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:57,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1218927803, now seen corresponding path program 1 times [2020-12-22 06:11:57,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:57,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092697324] [2020-12-22 06:11:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:57,308 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 06:11:57,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092697324] [2020-12-22 06:11:57,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:57,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:57,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006023020] [2020-12-22 06:11:57,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:57,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:57,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:57,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:57,312 INFO L87 Difference]: Start difference. First operand 72779 states and 133736 transitions. Second operand 5 states. [2020-12-22 06:12:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:18,679 INFO L93 Difference]: Finished difference Result 609596 states and 1122825 transitions. [2020-12-22 06:12:18,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:12:18,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-12-22 06:12:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:20,150 INFO L225 Difference]: With dead ends: 609596 [2020-12-22 06:12:20,150 INFO L226 Difference]: Without dead ends: 536871 [2020-12-22 06:12:20,335 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 06:12:20,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536871 states. [2020-12-22 06:12:29,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536871 to 141379. [2020-12-22 06:12:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141379 states. [2020-12-22 06:12:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141379 states to 141379 states and 259400 transitions. [2020-12-22 06:12:30,575 INFO L78 Accepts]: Start accepts. Automaton has 141379 states and 259400 transitions. Word has length 66 [2020-12-22 06:12:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:30,576 INFO L481 AbstractCegarLoop]: Abstraction has 141379 states and 259400 transitions. [2020-12-22 06:12:30,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 141379 states and 259400 transitions. [2020-12-22 06:12:30,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:12:30,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:30,591 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] [2020-12-22 06:12:30,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:12:30,591 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:30,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1826683820, now seen corresponding path program 1 times [2020-12-22 06:12:30,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:30,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729009702] [2020-12-22 06:12:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:30,723 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 06:12:30,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729009702] [2020-12-22 06:12:30,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:30,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:30,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821729528] [2020-12-22 06:12:30,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:30,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:30,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:30,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:30,730 INFO L87 Difference]: Start difference. First operand 141379 states and 259400 transitions. Second operand 3 states. [2020-12-22 06:12:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:44,788 INFO L93 Difference]: Finished difference Result 419584 states and 770722 transitions. [2020-12-22 06:12:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:12:44,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 06:12:44,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:45,430 INFO L225 Difference]: With dead ends: 419584 [2020-12-22 06:12:45,430 INFO L226 Difference]: Without dead ends: 278255 [2020-12-22 06:12:45,565 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 06:12:45,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278255 states. [2020-12-22 06:12:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278255 to 141271. [2020-12-22 06:12:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141271 states. [2020-12-22 06:12:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141271 states to 141271 states and 258860 transitions. [2020-12-22 06:12:53,283 INFO L78 Accepts]: Start accepts. Automaton has 141271 states and 258860 transitions. Word has length 71 [2020-12-22 06:12:53,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:53,284 INFO L481 AbstractCegarLoop]: Abstraction has 141271 states and 258860 transitions. [2020-12-22 06:12:53,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:12:53,284 INFO L276 IsEmpty]: Start isEmpty. Operand 141271 states and 258860 transitions. [2020-12-22 06:12:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:12:53,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:53,286 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] [2020-12-22 06:12:53,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:12:53,286 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:53,287 INFO L82 PathProgramCache]: Analyzing trace with hash -983341647, now seen corresponding path program 1 times [2020-12-22 06:12:53,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:53,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562468575] [2020-12-22 06:12:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:53,363 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 06:12:53,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562468575] [2020-12-22 06:12:53,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:53,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:53,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374535703] [2020-12-22 06:12:53,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:53,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:53,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:53,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:53,366 INFO L87 Difference]: Start difference. First operand 141271 states and 258860 transitions. Second operand 5 states. [2020-12-22 06:13:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:37,780 INFO L93 Difference]: Finished difference Result 1199785 states and 2205747 transitions. [2020-12-22 06:13:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:13:37,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-22 06:13:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:40,732 INFO L225 Difference]: With dead ends: 1199785 [2020-12-22 06:13:40,732 INFO L226 Difference]: Without dead ends: 1058567 [2020-12-22 06:13:42,057 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 06:13:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058567 states.