/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:58:27,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:58:27,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:58:27,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:58:27,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:58:27,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:58:27,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:58:27,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:58:27,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:58:27,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:58:27,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:58:27,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:58:27,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:58:27,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:58:27,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:58:27,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:58:27,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:58:27,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:58:27,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:58:27,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:58:27,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:58:27,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:58:27,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:58:27,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:58:27,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:58:27,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:58:27,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:58:27,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:58:27,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:58:27,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:58:27,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:58:27,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:58:27,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:58:27,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:58:27,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:58:27,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:58:27,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:58:27,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:58:27,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:58:27,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:58:27,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:58:27,931 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:58:27,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:58:27,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:58:27,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:58:27,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:58:27,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:58:27,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:58:27,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:58:27,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:58:27,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:58:27,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:58:27,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:58:27,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:58:27,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:58:27,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:58:27,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:58:27,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:58:27,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:58:27,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:58:27,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:58:27,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:58:27,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:58:28,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:58:28,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:58:28,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:58:28,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:58:28,361 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:58:28,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c [2020-12-22 05:58:28,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fab74d06/7d91bcd9770042f29cbe09c3d236faa5/FLAG60e70bcae [2020-12-22 05:58:29,292 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:58:29,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c [2020-12-22 05:58:29,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fab74d06/7d91bcd9770042f29cbe09c3d236faa5/FLAG60e70bcae [2020-12-22 05:58:29,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fab74d06/7d91bcd9770042f29cbe09c3d236faa5 [2020-12-22 05:58:29,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:58:29,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:58:29,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:58:29,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:58:29,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:58:29,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:58:29" (1/1) ... [2020-12-22 05:58:29,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42bf3bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:29, skipping insertion in model container [2020-12-22 05:58:29,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:58:29" (1/1) ... [2020-12-22 05:58:29,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:58:29,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:58:30,043 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c[48864,48877] [2020-12-22 05:58:30,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:58:30,146 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:58:30,257 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c[48864,48877] [2020-12-22 05:58:30,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:58:30,397 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:58:30,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30 WrapperNode [2020-12-22 05:58:30,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:58:30,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:58:30,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:58:30,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:58:30,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (1/1) ... [2020-12-22 05:58:30,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (1/1) ... [2020-12-22 05:58:30,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:58:30,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:58:30,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:58:30,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:58:30,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (1/1) ... [2020-12-22 05:58:30,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (1/1) ... [2020-12-22 05:58:30,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (1/1) ... [2020-12-22 05:58:30,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (1/1) ... [2020-12-22 05:58:30,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (1/1) ... [2020-12-22 05:58:30,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (1/1) ... [2020-12-22 05:58:30,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (1/1) ... [2020-12-22 05:58:30,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:58:30,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:58:30,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:58:30,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:58:30,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:58:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:58:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:58:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:58:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:58:36,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:58:36,359 INFO L299 CfgBuilder]: Removed 505 assume(true) statements. [2020-12-22 05:58:36,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:58:36 BoogieIcfgContainer [2020-12-22 05:58:36,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:58:36,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:58:36,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:58:36,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:58:36,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:58:29" (1/3) ... [2020-12-22 05:58:36,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555f5150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:58:36, skipping insertion in model container [2020-12-22 05:58:36,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:30" (2/3) ... [2020-12-22 05:58:36,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555f5150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:58:36, skipping insertion in model container [2020-12-22 05:58:36,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:58:36" (3/3) ... [2020-12-22 05:58:36,382 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product03.cil.c [2020-12-22 05:58:36,389 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:58:36,399 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:58:36,417 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:58:36,472 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:58:36,472 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:58:36,473 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:58:36,473 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:58:36,474 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:58:36,474 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:58:36,478 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:58:36,478 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:58:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states. [2020-12-22 05:58:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 05:58:36,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:36,552 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 05:58:36,552 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:36,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:36,559 INFO L82 PathProgramCache]: Analyzing trace with hash 13983143, now seen corresponding path program 1 times [2020-12-22 05:58:36,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:36,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025779782] [2020-12-22 05:58:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:37,032 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 05:58:37,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025779782] [2020-12-22 05:58:37,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:37,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:37,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442110236] [2020-12-22 05:58:37,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:37,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:37,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:37,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:37,062 INFO L87 Difference]: Start difference. First operand 2303 states. Second operand 3 states. [2020-12-22 05:58:37,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:37,402 INFO L93 Difference]: Finished difference Result 6829 states and 12929 transitions. [2020-12-22 05:58:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:37,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 05:58:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:37,480 INFO L225 Difference]: With dead ends: 6829 [2020-12-22 05:58:37,480 INFO L226 Difference]: Without dead ends: 4531 [2020-12-22 05:58:37,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4531 states. [2020-12-22 05:58:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4531 to 2299. [2020-12-22 05:58:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-12-22 05:58:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 4340 transitions. [2020-12-22 05:58:37,695 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 4340 transitions. Word has length 53 [2020-12-22 05:58:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:37,696 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 4340 transitions. [2020-12-22 05:58:37,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 4340 transitions. [2020-12-22 05:58:37,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 05:58:37,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:37,704 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 05:58:37,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:58:37,705 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:37,708 INFO L82 PathProgramCache]: Analyzing trace with hash 347533292, now seen corresponding path program 1 times [2020-12-22 05:58:37,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:37,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49312845] [2020-12-22 05:58:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:37,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49312845] [2020-12-22 05:58:37,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:37,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:37,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285832633] [2020-12-22 05:58:37,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:37,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:37,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:37,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:37,919 INFO L87 Difference]: Start difference. First operand 2299 states and 4340 transitions. Second operand 6 states. [2020-12-22 05:58:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:38,718 INFO L93 Difference]: Finished difference Result 8971 states and 16957 transitions. [2020-12-22 05:58:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:58:38,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 05:58:38,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:38,761 INFO L225 Difference]: With dead ends: 8971 [2020-12-22 05:58:38,761 INFO L226 Difference]: Without dead ends: 6715 [2020-12-22 05:58:38,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:58:38,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6715 states. [2020-12-22 05:58:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6715 to 2295. [2020-12-22 05:58:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-12-22 05:58:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 4329 transitions. [2020-12-22 05:58:38,921 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 4329 transitions. Word has length 60 [2020-12-22 05:58:38,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:38,922 INFO L481 AbstractCegarLoop]: Abstraction has 2295 states and 4329 transitions. [2020-12-22 05:58:38,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 4329 transitions. [2020-12-22 05:58:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:58:38,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:38,925 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] [2020-12-22 05:58:38,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:58:38,926 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:38,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1331038975, now seen corresponding path program 1 times [2020-12-22 05:58:38,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:38,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130384535] [2020-12-22 05:58:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:39,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130384535] [2020-12-22 05:58:39,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:39,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:39,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819683394] [2020-12-22 05:58:39,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:39,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:39,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:39,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:39,076 INFO L87 Difference]: Start difference. First operand 2295 states and 4329 transitions. Second operand 4 states. [2020-12-22 05:58:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:39,663 INFO L93 Difference]: Finished difference Result 6773 states and 12796 transitions. [2020-12-22 05:58:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:39,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:58:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:39,691 INFO L225 Difference]: With dead ends: 6773 [2020-12-22 05:58:39,692 INFO L226 Difference]: Without dead ends: 4521 [2020-12-22 05:58:39,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:39,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2020-12-22 05:58:39,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 2295. [2020-12-22 05:58:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-12-22 05:58:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 4320 transitions. [2020-12-22 05:58:39,830 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 4320 transitions. Word has length 62 [2020-12-22 05:58:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:39,839 INFO L481 AbstractCegarLoop]: Abstraction has 2295 states and 4320 transitions. [2020-12-22 05:58:39,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 4320 transitions. [2020-12-22 05:58:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 05:58:39,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:39,844 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] [2020-12-22 05:58:39,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:58:39,845 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:39,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:39,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1309583314, now seen corresponding path program 1 times [2020-12-22 05:58:39,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:39,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095905456] [2020-12-22 05:58:39,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:39,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095905456] [2020-12-22 05:58:39,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:39,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:39,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86624496] [2020-12-22 05:58:39,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:39,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:39,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:39,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:39,967 INFO L87 Difference]: Start difference. First operand 2295 states and 4320 transitions. Second operand 4 states. [2020-12-22 05:58:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:40,503 INFO L93 Difference]: Finished difference Result 6773 states and 12778 transitions. [2020-12-22 05:58:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:40,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 05:58:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:40,536 INFO L225 Difference]: With dead ends: 6773 [2020-12-22 05:58:40,536 INFO L226 Difference]: Without dead ends: 4521 [2020-12-22 05:58:40,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2020-12-22 05:58:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 2295. [2020-12-22 05:58:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-12-22 05:58:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 4311 transitions. [2020-12-22 05:58:40,689 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 4311 transitions. Word has length 64 [2020-12-22 05:58:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:40,691 INFO L481 AbstractCegarLoop]: Abstraction has 2295 states and 4311 transitions. [2020-12-22 05:58:40,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 4311 transitions. [2020-12-22 05:58:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:58:40,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:40,695 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 05:58:40,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:58:40,696 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:40,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1753191167, now seen corresponding path program 1 times [2020-12-22 05:58:40,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:40,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413972922] [2020-12-22 05:58:40,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:40,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413972922] [2020-12-22 05:58:40,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:40,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:40,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856401726] [2020-12-22 05:58:40,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:40,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:40,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:40,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:40,822 INFO L87 Difference]: Start difference. First operand 2295 states and 4311 transitions. Second operand 4 states. [2020-12-22 05:58:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:41,589 INFO L93 Difference]: Finished difference Result 11165 states and 21062 transitions. [2020-12-22 05:58:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:41,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 05:58:41,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:41,642 INFO L225 Difference]: With dead ends: 11165 [2020-12-22 05:58:41,643 INFO L226 Difference]: Without dead ends: 8913 [2020-12-22 05:58:41,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8913 states. [2020-12-22 05:58:41,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8913 to 2295. [2020-12-22 05:58:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-12-22 05:58:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 4307 transitions. [2020-12-22 05:58:41,829 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 4307 transitions. Word has length 66 [2020-12-22 05:58:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:41,829 INFO L481 AbstractCegarLoop]: Abstraction has 2295 states and 4307 transitions. [2020-12-22 05:58:41,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:41,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 4307 transitions. [2020-12-22 05:58:41,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:58:41,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:41,832 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 05:58:41,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:58:41,833 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:41,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1094256255, now seen corresponding path program 1 times [2020-12-22 05:58:41,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:41,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741609102] [2020-12-22 05:58:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:41,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741609102] [2020-12-22 05:58:41,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:41,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:41,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046242439] [2020-12-22 05:58:41,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:41,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:41,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:41,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:41,936 INFO L87 Difference]: Start difference. First operand 2295 states and 4307 transitions. Second operand 4 states. [2020-12-22 05:58:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:42,380 INFO L93 Difference]: Finished difference Result 8948 states and 16871 transitions. [2020-12-22 05:58:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:42,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 05:58:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:42,398 INFO L225 Difference]: With dead ends: 8948 [2020-12-22 05:58:42,399 INFO L226 Difference]: Without dead ends: 6675 [2020-12-22 05:58:42,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6675 states. [2020-12-22 05:58:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6675 to 2277. [2020-12-22 05:58:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2277 states. [2020-12-22 05:58:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 4276 transitions. [2020-12-22 05:58:42,563 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 4276 transitions. Word has length 66 [2020-12-22 05:58:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:42,563 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 4276 transitions. [2020-12-22 05:58:42,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 4276 transitions. [2020-12-22 05:58:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 05:58:42,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:42,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:42,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:58:42,566 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:42,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1027983750, now seen corresponding path program 1 times [2020-12-22 05:58:42,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:42,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22932882] [2020-12-22 05:58:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:42,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22932882] [2020-12-22 05:58:42,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:42,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:42,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386696958] [2020-12-22 05:58:42,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:42,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:42,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:42,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:42,633 INFO L87 Difference]: Start difference. First operand 2277 states and 4276 transitions. Second operand 4 states. [2020-12-22 05:58:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:43,042 INFO L93 Difference]: Finished difference Result 6737 states and 12691 transitions. [2020-12-22 05:58:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:43,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 05:58:43,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:43,055 INFO L225 Difference]: With dead ends: 6737 [2020-12-22 05:58:43,055 INFO L226 Difference]: Without dead ends: 4482 [2020-12-22 05:58:43,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2020-12-22 05:58:43,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 2277. [2020-12-22 05:58:43,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2277 states. [2020-12-22 05:58:43,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 4270 transitions. [2020-12-22 05:58:43,258 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 4270 transitions. Word has length 67 [2020-12-22 05:58:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:43,259 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 4270 transitions. [2020-12-22 05:58:43,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 4270 transitions. [2020-12-22 05:58:43,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:58:43,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:43,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:43,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:58:43,263 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:43,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:43,263 INFO L82 PathProgramCache]: Analyzing trace with hash -792122438, now seen corresponding path program 1 times [2020-12-22 05:58:43,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:43,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101455643] [2020-12-22 05:58:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:43,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101455643] [2020-12-22 05:58:43,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:43,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:43,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126110095] [2020-12-22 05:58:43,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:43,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:43,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:43,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:43,329 INFO L87 Difference]: Start difference. First operand 2277 states and 4270 transitions. Second operand 4 states. [2020-12-22 05:58:43,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:43,694 INFO L93 Difference]: Finished difference Result 6737 states and 12679 transitions. [2020-12-22 05:58:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:43,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 05:58:43,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:43,710 INFO L225 Difference]: With dead ends: 6737 [2020-12-22 05:58:43,710 INFO L226 Difference]: Without dead ends: 4482 [2020-12-22 05:58:43,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:43,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2020-12-22 05:58:43,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 2277. [2020-12-22 05:58:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2277 states. [2020-12-22 05:58:43,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 4264 transitions. [2020-12-22 05:58:43,865 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 4264 transitions. Word has length 68 [2020-12-22 05:58:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:43,867 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 4264 transitions. [2020-12-22 05:58:43,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 4264 transitions. [2020-12-22 05:58:43,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:58:43,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:43,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:43,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:58:43,877 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:43,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:43,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1517418539, now seen corresponding path program 1 times [2020-12-22 05:58:43,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:43,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566499115] [2020-12-22 05:58:43,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:43,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566499115] [2020-12-22 05:58:43,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:43,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:58:43,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524300519] [2020-12-22 05:58:43,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:58:43,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:43,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:58:43,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:43,991 INFO L87 Difference]: Start difference. First operand 2277 states and 4264 transitions. Second operand 7 states. [2020-12-22 05:58:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:44,899 INFO L93 Difference]: Finished difference Result 11136 states and 20976 transitions. [2020-12-22 05:58:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:44,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-22 05:58:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:44,929 INFO L225 Difference]: With dead ends: 11136 [2020-12-22 05:58:44,929 INFO L226 Difference]: Without dead ends: 8887 [2020-12-22 05:58:44,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:58:44,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8887 states. [2020-12-22 05:58:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8887 to 2279. [2020-12-22 05:58:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2279 states. [2020-12-22 05:58:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 4265 transitions. [2020-12-22 05:58:45,114 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 4265 transitions. Word has length 69 [2020-12-22 05:58:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:45,114 INFO L481 AbstractCegarLoop]: Abstraction has 2279 states and 4265 transitions. [2020-12-22 05:58:45,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:58:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 4265 transitions. [2020-12-22 05:58:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:58:45,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:45,117 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 05:58:45,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:58:45,117 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:45,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:45,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1564965744, now seen corresponding path program 1 times [2020-12-22 05:58:45,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:45,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091626069] [2020-12-22 05:58:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:45,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091626069] [2020-12-22 05:58:45,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:45,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:58:45,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276558741] [2020-12-22 05:58:45,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:58:45,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:45,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:58:45,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:45,204 INFO L87 Difference]: Start difference. First operand 2279 states and 4265 transitions. Second operand 7 states. [2020-12-22 05:58:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:46,070 INFO L93 Difference]: Finished difference Result 11128 states and 20955 transitions. [2020-12-22 05:58:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:46,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-12-22 05:58:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:46,096 INFO L225 Difference]: With dead ends: 11128 [2020-12-22 05:58:46,096 INFO L226 Difference]: Without dead ends: 8882 [2020-12-22 05:58:46,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:58:46,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8882 states. [2020-12-22 05:58:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8882 to 2284. [2020-12-22 05:58:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2284 states. [2020-12-22 05:58:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 4273 transitions. [2020-12-22 05:58:46,289 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 4273 transitions. Word has length 71 [2020-12-22 05:58:46,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:46,290 INFO L481 AbstractCegarLoop]: Abstraction has 2284 states and 4273 transitions. [2020-12-22 05:58:46,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:58:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 4273 transitions. [2020-12-22 05:58:46,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:58:46,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:46,294 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 05:58:46,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:58:46,294 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:46,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:46,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2029229739, now seen corresponding path program 1 times [2020-12-22 05:58:46,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:46,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760718860] [2020-12-22 05:58:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:46,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760718860] [2020-12-22 05:58:46,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:46,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:46,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551668323] [2020-12-22 05:58:46,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:46,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:46,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:46,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:46,389 INFO L87 Difference]: Start difference. First operand 2284 states and 4273 transitions. Second operand 3 states. [2020-12-22 05:58:46,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:46,524 INFO L93 Difference]: Finished difference Result 4510 states and 8464 transitions. [2020-12-22 05:58:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:46,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 05:58:46,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:46,532 INFO L225 Difference]: With dead ends: 4510 [2020-12-22 05:58:46,532 INFO L226 Difference]: Without dead ends: 2263 [2020-12-22 05:58:46,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2020-12-22 05:58:46,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2020-12-22 05:58:46,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2263 states. [2020-12-22 05:58:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 4237 transitions. [2020-12-22 05:58:46,668 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 4237 transitions. Word has length 73 [2020-12-22 05:58:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:46,668 INFO L481 AbstractCegarLoop]: Abstraction has 2263 states and 4237 transitions. [2020-12-22 05:58:46,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 4237 transitions. [2020-12-22 05:58:46,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:58:46,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:46,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:46,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:58:46,672 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:46,673 INFO L82 PathProgramCache]: Analyzing trace with hash -996842118, now seen corresponding path program 1 times [2020-12-22 05:58:46,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:46,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664313911] [2020-12-22 05:58:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:46,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664313911] [2020-12-22 05:58:46,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:46,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:46,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459483420] [2020-12-22 05:58:46,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:46,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:46,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:46,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:46,766 INFO L87 Difference]: Start difference. First operand 2263 states and 4237 transitions. Second operand 5 states. [2020-12-22 05:58:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:46,971 INFO L93 Difference]: Finished difference Result 4459 states and 8386 transitions. [2020-12-22 05:58:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:46,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 05:58:46,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:46,977 INFO L225 Difference]: With dead ends: 4459 [2020-12-22 05:58:46,977 INFO L226 Difference]: Without dead ends: 2257 [2020-12-22 05:58:46,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2020-12-22 05:58:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2020-12-22 05:58:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2020-12-22 05:58:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 4228 transitions. [2020-12-22 05:58:47,100 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 4228 transitions. Word has length 75 [2020-12-22 05:58:47,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:47,101 INFO L481 AbstractCegarLoop]: Abstraction has 2257 states and 4228 transitions. [2020-12-22 05:58:47,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 4228 transitions. [2020-12-22 05:58:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:58:47,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:47,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:47,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:58:47,104 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:47,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1253834246, now seen corresponding path program 1 times [2020-12-22 05:58:47,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:47,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211838519] [2020-12-22 05:58:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:47,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211838519] [2020-12-22 05:58:47,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:47,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:47,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860761525] [2020-12-22 05:58:47,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:47,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:47,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:47,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:47,172 INFO L87 Difference]: Start difference. First operand 2257 states and 4228 transitions. Second operand 4 states. [2020-12-22 05:58:47,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:47,328 INFO L93 Difference]: Finished difference Result 4453 states and 8377 transitions. [2020-12-22 05:58:47,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:47,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 05:58:47,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:47,334 INFO L225 Difference]: With dead ends: 4453 [2020-12-22 05:58:47,335 INFO L226 Difference]: Without dead ends: 2243 [2020-12-22 05:58:47,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-12-22 05:58:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2243. [2020-12-22 05:58:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2020-12-22 05:58:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4207 transitions. [2020-12-22 05:58:47,462 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4207 transitions. Word has length 75 [2020-12-22 05:58:47,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:47,463 INFO L481 AbstractCegarLoop]: Abstraction has 2243 states and 4207 transitions. [2020-12-22 05:58:47,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:47,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4207 transitions. [2020-12-22 05:58:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 05:58:47,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:47,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:47,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:58:47,466 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:47,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:47,467 INFO L82 PathProgramCache]: Analyzing trace with hash 605407655, now seen corresponding path program 1 times [2020-12-22 05:58:47,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:47,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729762519] [2020-12-22 05:58:47,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:47,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729762519] [2020-12-22 05:58:47,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:47,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:47,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304701269] [2020-12-22 05:58:47,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:47,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:47,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:47,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:47,575 INFO L87 Difference]: Start difference. First operand 2243 states and 4207 transitions. Second operand 6 states. [2020-12-22 05:58:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:47,846 INFO L93 Difference]: Finished difference Result 4453 states and 8372 transitions. [2020-12-22 05:58:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:47,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 05:58:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:47,853 INFO L225 Difference]: With dead ends: 4453 [2020-12-22 05:58:47,854 INFO L226 Difference]: Without dead ends: 2263 [2020-12-22 05:58:47,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:58:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2020-12-22 05:58:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2243. [2020-12-22 05:58:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2020-12-22 05:58:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4206 transitions. [2020-12-22 05:58:48,017 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4206 transitions. Word has length 76 [2020-12-22 05:58:48,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:48,018 INFO L481 AbstractCegarLoop]: Abstraction has 2243 states and 4206 transitions. [2020-12-22 05:58:48,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:48,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4206 transitions. [2020-12-22 05:58:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 05:58:48,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:48,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:48,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:58:48,021 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:48,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:48,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1546323955, now seen corresponding path program 1 times [2020-12-22 05:58:48,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:48,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354338592] [2020-12-22 05:58:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:48,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354338592] [2020-12-22 05:58:48,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:48,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:48,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347846828] [2020-12-22 05:58:48,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:48,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:48,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:48,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:48,107 INFO L87 Difference]: Start difference. First operand 2243 states and 4206 transitions. Second operand 6 states. [2020-12-22 05:58:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:48,452 INFO L93 Difference]: Finished difference Result 4443 states and 8353 transitions. [2020-12-22 05:58:48,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:48,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 05:58:48,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:48,461 INFO L225 Difference]: With dead ends: 4443 [2020-12-22 05:58:48,461 INFO L226 Difference]: Without dead ends: 2258 [2020-12-22 05:58:48,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:58:48,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2020-12-22 05:58:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2243. [2020-12-22 05:58:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2020-12-22 05:58:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4205 transitions. [2020-12-22 05:58:48,632 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4205 transitions. Word has length 77 [2020-12-22 05:58:48,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:48,632 INFO L481 AbstractCegarLoop]: Abstraction has 2243 states and 4205 transitions. [2020-12-22 05:58:48,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4205 transitions. [2020-12-22 05:58:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 05:58:48,635 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:48,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:48,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:58:48,636 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:48,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:48,636 INFO L82 PathProgramCache]: Analyzing trace with hash -738611566, now seen corresponding path program 1 times [2020-12-22 05:58:48,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:48,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798256360] [2020-12-22 05:58:48,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:48,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798256360] [2020-12-22 05:58:48,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:48,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:48,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191472393] [2020-12-22 05:58:48,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:48,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:48,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:48,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:48,769 INFO L87 Difference]: Start difference. First operand 2243 states and 4205 transitions. Second operand 4 states. [2020-12-22 05:58:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:50,100 INFO L93 Difference]: Finished difference Result 6135 states and 11592 transitions. [2020-12-22 05:58:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:50,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 05:58:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:50,111 INFO L225 Difference]: With dead ends: 6135 [2020-12-22 05:58:50,112 INFO L226 Difference]: Without dead ends: 3956 [2020-12-22 05:58:50,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2020-12-22 05:58:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 2243. [2020-12-22 05:58:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2020-12-22 05:58:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4199 transitions. [2020-12-22 05:58:50,283 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4199 transitions. Word has length 78 [2020-12-22 05:58:50,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:50,284 INFO L481 AbstractCegarLoop]: Abstraction has 2243 states and 4199 transitions. [2020-12-22 05:58:50,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4199 transitions. [2020-12-22 05:58:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 05:58:50,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:50,286 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:50,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:58:50,287 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:50,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1707707840, now seen corresponding path program 1 times [2020-12-22 05:58:50,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:50,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022640821] [2020-12-22 05:58:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:50,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022640821] [2020-12-22 05:58:50,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:50,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:50,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823162497] [2020-12-22 05:58:50,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:50,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:50,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:50,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:50,382 INFO L87 Difference]: Start difference. First operand 2243 states and 4199 transitions. Second operand 4 states. [2020-12-22 05:58:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:51,533 INFO L93 Difference]: Finished difference Result 6135 states and 11581 transitions. [2020-12-22 05:58:51,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:51,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 05:58:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:51,547 INFO L225 Difference]: With dead ends: 6135 [2020-12-22 05:58:51,547 INFO L226 Difference]: Without dead ends: 3956 [2020-12-22 05:58:51,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:51,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2020-12-22 05:58:51,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 2243. [2020-12-22 05:58:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2020-12-22 05:58:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4193 transitions. [2020-12-22 05:58:51,738 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4193 transitions. Word has length 80 [2020-12-22 05:58:51,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:51,738 INFO L481 AbstractCegarLoop]: Abstraction has 2243 states and 4193 transitions. [2020-12-22 05:58:51,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:51,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4193 transitions. [2020-12-22 05:58:51,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 05:58:51,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:51,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:51,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:58:51,741 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:51,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:51,742 INFO L82 PathProgramCache]: Analyzing trace with hash -65650296, now seen corresponding path program 1 times [2020-12-22 05:58:51,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:51,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569675227] [2020-12-22 05:58:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:51,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569675227] [2020-12-22 05:58:51,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:51,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:51,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363922541] [2020-12-22 05:58:51,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:51,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:51,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:51,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:51,856 INFO L87 Difference]: Start difference. First operand 2243 states and 4193 transitions. Second operand 4 states. [2020-12-22 05:58:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:52,994 INFO L93 Difference]: Finished difference Result 6135 states and 11570 transitions. [2020-12-22 05:58:52,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:52,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 05:58:52,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:53,013 INFO L225 Difference]: With dead ends: 6135 [2020-12-22 05:58:53,013 INFO L226 Difference]: Without dead ends: 3956 [2020-12-22 05:58:53,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2020-12-22 05:58:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 2243. [2020-12-22 05:58:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2020-12-22 05:58:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4187 transitions. [2020-12-22 05:58:53,163 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4187 transitions. Word has length 82 [2020-12-22 05:58:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:53,163 INFO L481 AbstractCegarLoop]: Abstraction has 2243 states and 4187 transitions. [2020-12-22 05:58:53,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4187 transitions. [2020-12-22 05:58:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 05:58:53,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:53,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:53,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:58:53,167 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:53,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1420572704, now seen corresponding path program 1 times [2020-12-22 05:58:53,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:53,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735954069] [2020-12-22 05:58:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:53,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735954069] [2020-12-22 05:58:53,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:53,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:53,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120777778] [2020-12-22 05:58:53,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:53,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:53,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:53,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:53,259 INFO L87 Difference]: Start difference. First operand 2243 states and 4187 transitions. Second operand 4 states. [2020-12-22 05:58:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:54,408 INFO L93 Difference]: Finished difference Result 6135 states and 11559 transitions. [2020-12-22 05:58:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:54,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-12-22 05:58:54,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:54,420 INFO L225 Difference]: With dead ends: 6135 [2020-12-22 05:58:54,420 INFO L226 Difference]: Without dead ends: 3956 [2020-12-22 05:58:54,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2020-12-22 05:58:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 2243. [2020-12-22 05:58:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2020-12-22 05:58:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 4181 transitions. [2020-12-22 05:58:54,570 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 4181 transitions. Word has length 84 [2020-12-22 05:58:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:54,570 INFO L481 AbstractCegarLoop]: Abstraction has 2243 states and 4181 transitions. [2020-12-22 05:58:54,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 4181 transitions. [2020-12-22 05:58:54,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 05:58:54,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:54,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:54,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:58:54,574 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:54,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:54,574 INFO L82 PathProgramCache]: Analyzing trace with hash -178845954, now seen corresponding path program 1 times [2020-12-22 05:58:54,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:54,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426063886] [2020-12-22 05:58:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:54,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426063886] [2020-12-22 05:58:54,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:54,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:54,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103385015] [2020-12-22 05:58:54,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:54,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:54,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:54,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:54,677 INFO L87 Difference]: Start difference. First operand 2243 states and 4181 transitions. Second operand 6 states. [2020-12-22 05:58:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:58,029 INFO L93 Difference]: Finished difference Result 23845 states and 44836 transitions. [2020-12-22 05:58:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:58:58,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-12-22 05:58:58,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:58,086 INFO L225 Difference]: With dead ends: 23845 [2020-12-22 05:58:58,086 INFO L226 Difference]: Without dead ends: 21684 [2020-12-22 05:58:58,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:58:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21684 states. [2020-12-22 05:58:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21684 to 4410. [2020-12-22 05:58:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4410 states. [2020-12-22 05:58:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 8250 transitions. [2020-12-22 05:58:58,732 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 8250 transitions. Word has length 86 [2020-12-22 05:58:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:58,733 INFO L481 AbstractCegarLoop]: Abstraction has 4410 states and 8250 transitions. [2020-12-22 05:58:58,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 8250 transitions. [2020-12-22 05:58:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 05:58:58,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:58,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:58,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:58:58,738 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:58,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1555279906, now seen corresponding path program 1 times [2020-12-22 05:58:58,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:58,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765263088] [2020-12-22 05:58:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:58,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765263088] [2020-12-22 05:58:58,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:58,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:58,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096781360] [2020-12-22 05:58:58,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:58,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:58,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:58,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:58,848 INFO L87 Difference]: Start difference. First operand 4410 states and 8250 transitions. Second operand 5 states. [2020-12-22 05:59:01,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:01,217 INFO L93 Difference]: Finished difference Result 17543 states and 32877 transitions. [2020-12-22 05:59:01,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:01,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 05:59:01,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:01,241 INFO L225 Difference]: With dead ends: 17543 [2020-12-22 05:59:01,241 INFO L226 Difference]: Without dead ends: 13281 [2020-12-22 05:59:01,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:01,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2020-12-22 05:59:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 4422. [2020-12-22 05:59:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4422 states. [2020-12-22 05:59:01,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 8262 transitions. [2020-12-22 05:59:01,616 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 8262 transitions. Word has length 88 [2020-12-22 05:59:01,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:01,617 INFO L481 AbstractCegarLoop]: Abstraction has 4422 states and 8262 transitions. [2020-12-22 05:59:01,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:01,617 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 8262 transitions. [2020-12-22 05:59:01,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 05:59:01,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:01,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:01,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:59:01,622 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:01,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:01,622 INFO L82 PathProgramCache]: Analyzing trace with hash -692204519, now seen corresponding path program 1 times [2020-12-22 05:59:01,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:01,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766341921] [2020-12-22 05:59:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:01,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766341921] [2020-12-22 05:59:01,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:01,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:01,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351298436] [2020-12-22 05:59:01,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:01,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:01,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:01,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:01,753 INFO L87 Difference]: Start difference. First operand 4422 states and 8262 transitions. Second operand 5 states. [2020-12-22 05:59:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:02,115 INFO L93 Difference]: Finished difference Result 8776 states and 16433 transitions. [2020-12-22 05:59:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:02,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 05:59:02,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:02,123 INFO L225 Difference]: With dead ends: 8776 [2020-12-22 05:59:02,123 INFO L226 Difference]: Without dead ends: 4433 [2020-12-22 05:59:02,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:02,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2020-12-22 05:59:02,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4418. [2020-12-22 05:59:02,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4418 states. [2020-12-22 05:59:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4418 states to 4418 states and 8252 transitions. [2020-12-22 05:59:02,504 INFO L78 Accepts]: Start accepts. Automaton has 4418 states and 8252 transitions. Word has length 88 [2020-12-22 05:59:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:02,505 INFO L481 AbstractCegarLoop]: Abstraction has 4418 states and 8252 transitions. [2020-12-22 05:59:02,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4418 states and 8252 transitions. [2020-12-22 05:59:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 05:59:02,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:02,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:02,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:59:02,510 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:02,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1282644095, now seen corresponding path program 1 times [2020-12-22 05:59:02,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:02,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548563287] [2020-12-22 05:59:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:02,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548563287] [2020-12-22 05:59:02,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:02,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:02,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509085869] [2020-12-22 05:59:02,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:02,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:02,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:02,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:02,584 INFO L87 Difference]: Start difference. First operand 4418 states and 8252 transitions. Second operand 4 states. [2020-12-22 05:59:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:04,744 INFO L93 Difference]: Finished difference Result 15180 states and 28475 transitions. [2020-12-22 05:59:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:04,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-22 05:59:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:04,758 INFO L225 Difference]: With dead ends: 15180 [2020-12-22 05:59:04,759 INFO L226 Difference]: Without dead ends: 10867 [2020-12-22 05:59:04,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:04,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10867 states. [2020-12-22 05:59:05,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10867 to 6012. [2020-12-22 05:59:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6012 states. [2020-12-22 05:59:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 11102 transitions. [2020-12-22 05:59:05,452 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 11102 transitions. Word has length 89 [2020-12-22 05:59:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:05,453 INFO L481 AbstractCegarLoop]: Abstraction has 6012 states and 11102 transitions. [2020-12-22 05:59:05,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 11102 transitions. [2020-12-22 05:59:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 05:59:05,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:05,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:05,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:59:05,458 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:05,458 INFO L82 PathProgramCache]: Analyzing trace with hash -387356049, now seen corresponding path program 1 times [2020-12-22 05:59:05,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:05,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525635327] [2020-12-22 05:59:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:05,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525635327] [2020-12-22 05:59:05,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:05,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:05,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949968179] [2020-12-22 05:59:05,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:05,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:05,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:05,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:05,575 INFO L87 Difference]: Start difference. First operand 6012 states and 11102 transitions. Second operand 5 states. [2020-12-22 05:59:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:05,929 INFO L93 Difference]: Finished difference Result 8982 states and 16597 transitions. [2020-12-22 05:59:05,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:05,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-12-22 05:59:05,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:05,936 INFO L225 Difference]: With dead ends: 8982 [2020-12-22 05:59:05,936 INFO L226 Difference]: Without dead ends: 3000 [2020-12-22 05:59:05,943 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 05:59:05,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-12-22 05:59:06,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 3000. [2020-12-22 05:59:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3000 states. [2020-12-22 05:59:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 5530 transitions. [2020-12-22 05:59:06,201 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 5530 transitions. Word has length 89 [2020-12-22 05:59:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:06,201 INFO L481 AbstractCegarLoop]: Abstraction has 3000 states and 5530 transitions. [2020-12-22 05:59:06,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 5530 transitions. [2020-12-22 05:59:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 05:59:06,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:06,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:06,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 05:59:06,204 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1602864519, now seen corresponding path program 1 times [2020-12-22 05:59:06,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:06,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803844129] [2020-12-22 05:59:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:06,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803844129] [2020-12-22 05:59:06,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:06,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:06,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314016889] [2020-12-22 05:59:06,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:06,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:06,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:06,296 INFO L87 Difference]: Start difference. First operand 3000 states and 5530 transitions. Second operand 5 states. [2020-12-22 05:59:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:07,425 INFO L93 Difference]: Finished difference Result 21492 states and 39956 transitions. [2020-12-22 05:59:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:07,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-12-22 05:59:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:07,446 INFO L225 Difference]: With dead ends: 21492 [2020-12-22 05:59:07,446 INFO L226 Difference]: Without dead ends: 18564 [2020-12-22 05:59:07,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:07,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18564 states. [2020-12-22 05:59:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18564 to 5497. [2020-12-22 05:59:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5497 states. [2020-12-22 05:59:07,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 10198 transitions. [2020-12-22 05:59:07,968 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 10198 transitions. Word has length 91 [2020-12-22 05:59:07,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:07,968 INFO L481 AbstractCegarLoop]: Abstraction has 5497 states and 10198 transitions. [2020-12-22 05:59:07,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:07,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 10198 transitions. [2020-12-22 05:59:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 05:59:07,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:07,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:07,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 05:59:07,971 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:07,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:07,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1877624133, now seen corresponding path program 1 times [2020-12-22 05:59:07,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:07,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505853360] [2020-12-22 05:59:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:08,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505853360] [2020-12-22 05:59:08,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:08,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:08,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527128313] [2020-12-22 05:59:08,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:08,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:08,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:08,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:08,074 INFO L87 Difference]: Start difference. First operand 5497 states and 10198 transitions. Second operand 6 states. [2020-12-22 05:59:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:09,190 INFO L93 Difference]: Finished difference Result 10000 states and 18458 transitions. [2020-12-22 05:59:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:59:09,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-12-22 05:59:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:09,199 INFO L225 Difference]: With dead ends: 10000 [2020-12-22 05:59:09,199 INFO L226 Difference]: Without dead ends: 7594 [2020-12-22 05:59:09,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2020-12-22 05:59:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 5487. [2020-12-22 05:59:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5487 states. [2020-12-22 05:59:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 10178 transitions. [2020-12-22 05:59:09,598 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 10178 transitions. Word has length 91 [2020-12-22 05:59:09,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:09,598 INFO L481 AbstractCegarLoop]: Abstraction has 5487 states and 10178 transitions. [2020-12-22 05:59:09,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:09,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 10178 transitions. [2020-12-22 05:59:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 05:59:09,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:09,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:09,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 05:59:09,601 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:09,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:09,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2027187445, now seen corresponding path program 1 times [2020-12-22 05:59:09,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:09,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645728204] [2020-12-22 05:59:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:09,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645728204] [2020-12-22 05:59:09,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:09,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:09,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316071874] [2020-12-22 05:59:09,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:09,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:09,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:09,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:09,681 INFO L87 Difference]: Start difference. First operand 5487 states and 10178 transitions. Second operand 5 states. [2020-12-22 05:59:10,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:10,625 INFO L93 Difference]: Finished difference Result 16655 states and 30926 transitions. [2020-12-22 05:59:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:59:10,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 05:59:10,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:10,646 INFO L225 Difference]: With dead ends: 16655 [2020-12-22 05:59:10,646 INFO L226 Difference]: Without dead ends: 14255 [2020-12-22 05:59:10,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:10,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14255 states. [2020-12-22 05:59:11,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14255 to 7626. [2020-12-22 05:59:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7626 states. [2020-12-22 05:59:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7626 states to 7626 states and 14127 transitions. [2020-12-22 05:59:11,143 INFO L78 Accepts]: Start accepts. Automaton has 7626 states and 14127 transitions. Word has length 93 [2020-12-22 05:59:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:11,144 INFO L481 AbstractCegarLoop]: Abstraction has 7626 states and 14127 transitions. [2020-12-22 05:59:11,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 7626 states and 14127 transitions. [2020-12-22 05:59:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 05:59:11,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:11,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:11,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 05:59:11,146 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:11,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:11,147 INFO L82 PathProgramCache]: Analyzing trace with hash 918387229, now seen corresponding path program 1 times [2020-12-22 05:59:11,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:11,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042371686] [2020-12-22 05:59:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:11,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042371686] [2020-12-22 05:59:11,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:11,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:11,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780027769] [2020-12-22 05:59:11,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:11,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:11,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:11,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:11,223 INFO L87 Difference]: Start difference. First operand 7626 states and 14127 transitions. Second operand 5 states. [2020-12-22 05:59:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:12,196 INFO L93 Difference]: Finished difference Result 15842 states and 29218 transitions. [2020-12-22 05:59:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:12,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-12-22 05:59:12,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:12,210 INFO L225 Difference]: With dead ends: 15842 [2020-12-22 05:59:12,210 INFO L226 Difference]: Without dead ends: 11520 [2020-12-22 05:59:12,223 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 05:59:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11520 states. [2020-12-22 05:59:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11520 to 7643. [2020-12-22 05:59:12,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7643 states. [2020-12-22 05:59:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 14140 transitions. [2020-12-22 05:59:12,660 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 14140 transitions. Word has length 95 [2020-12-22 05:59:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:12,660 INFO L481 AbstractCegarLoop]: Abstraction has 7643 states and 14140 transitions. [2020-12-22 05:59:12,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:12,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 14140 transitions. [2020-12-22 05:59:12,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 05:59:12,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:12,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:12,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 05:59:12,665 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:12,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:12,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1941230665, now seen corresponding path program 1 times [2020-12-22 05:59:12,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:12,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121831179] [2020-12-22 05:59:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:12,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121831179] [2020-12-22 05:59:12,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:12,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:12,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761309038] [2020-12-22 05:59:12,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:12,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:12,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:12,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:12,745 INFO L87 Difference]: Start difference. First operand 7643 states and 14140 transitions. Second operand 5 states. [2020-12-22 05:59:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:13,887 INFO L93 Difference]: Finished difference Result 17342 states and 32209 transitions. [2020-12-22 05:59:13,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:13,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-12-22 05:59:13,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:13,906 INFO L225 Difference]: With dead ends: 17342 [2020-12-22 05:59:13,906 INFO L226 Difference]: Without dead ends: 11065 [2020-12-22 05:59:13,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2020-12-22 05:59:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 7643. [2020-12-22 05:59:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7643 states. [2020-12-22 05:59:14,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 14040 transitions. [2020-12-22 05:59:14,379 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 14040 transitions. Word has length 102 [2020-12-22 05:59:14,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:14,379 INFO L481 AbstractCegarLoop]: Abstraction has 7643 states and 14040 transitions. [2020-12-22 05:59:14,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 14040 transitions. [2020-12-22 05:59:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 05:59:14,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:14,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:14,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 05:59:14,383 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:14,383 INFO L82 PathProgramCache]: Analyzing trace with hash 55305702, now seen corresponding path program 1 times [2020-12-22 05:59:14,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:14,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355355993] [2020-12-22 05:59:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:14,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355355993] [2020-12-22 05:59:14,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:14,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:14,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108313752] [2020-12-22 05:59:14,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:14,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:14,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:14,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:14,462 INFO L87 Difference]: Start difference. First operand 7643 states and 14040 transitions. Second operand 6 states. [2020-12-22 05:59:15,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:15,188 INFO L93 Difference]: Finished difference Result 12331 states and 22533 transitions. [2020-12-22 05:59:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:15,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-12-22 05:59:15,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:15,198 INFO L225 Difference]: With dead ends: 12331 [2020-12-22 05:59:15,198 INFO L226 Difference]: Without dead ends: 7658 [2020-12-22 05:59:15,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7658 states. [2020-12-22 05:59:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7658 to 7643. [2020-12-22 05:59:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7643 states. [2020-12-22 05:59:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 13938 transitions. [2020-12-22 05:59:15,665 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 13938 transitions. Word has length 102 [2020-12-22 05:59:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:15,665 INFO L481 AbstractCegarLoop]: Abstraction has 7643 states and 13938 transitions. [2020-12-22 05:59:15,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 13938 transitions. [2020-12-22 05:59:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 05:59:15,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:15,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:15,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 05:59:15,668 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1607798750, now seen corresponding path program 1 times [2020-12-22 05:59:15,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:15,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685002534] [2020-12-22 05:59:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:15,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685002534] [2020-12-22 05:59:15,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:15,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:15,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156780387] [2020-12-22 05:59:15,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:15,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:15,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:15,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:15,744 INFO L87 Difference]: Start difference. First operand 7643 states and 13938 transitions. Second operand 3 states. [2020-12-22 05:59:16,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:16,175 INFO L93 Difference]: Finished difference Result 13796 states and 25145 transitions. [2020-12-22 05:59:16,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:16,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-22 05:59:16,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:16,185 INFO L225 Difference]: With dead ends: 13796 [2020-12-22 05:59:16,185 INFO L226 Difference]: Without dead ends: 7621 [2020-12-22 05:59:16,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:16,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7621 states. [2020-12-22 05:59:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7621 to 7621. [2020-12-22 05:59:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7621 states. [2020-12-22 05:59:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7621 states to 7621 states and 13896 transitions. [2020-12-22 05:59:16,676 INFO L78 Accepts]: Start accepts. Automaton has 7621 states and 13896 transitions. Word has length 103 [2020-12-22 05:59:16,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:16,677 INFO L481 AbstractCegarLoop]: Abstraction has 7621 states and 13896 transitions. [2020-12-22 05:59:16,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:16,677 INFO L276 IsEmpty]: Start isEmpty. Operand 7621 states and 13896 transitions. [2020-12-22 05:59:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 05:59:16,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:16,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:16,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 05:59:16,680 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:16,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2077440587, now seen corresponding path program 1 times [2020-12-22 05:59:16,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:16,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872341788] [2020-12-22 05:59:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:16,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872341788] [2020-12-22 05:59:16,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:16,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:16,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856233579] [2020-12-22 05:59:16,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:16,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:16,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:16,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:16,771 INFO L87 Difference]: Start difference. First operand 7621 states and 13896 transitions. Second operand 5 states. [2020-12-22 05:59:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:18,852 INFO L93 Difference]: Finished difference Result 31250 states and 55815 transitions. [2020-12-22 05:59:18,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:18,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 05:59:18,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:18,887 INFO L225 Difference]: With dead ends: 31250 [2020-12-22 05:59:18,888 INFO L226 Difference]: Without dead ends: 26979 [2020-12-22 05:59:18,895 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 05:59:18,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26979 states. [2020-12-22 05:59:19,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26979 to 9528. [2020-12-22 05:59:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9528 states. [2020-12-22 05:59:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9528 states to 9528 states and 16902 transitions. [2020-12-22 05:59:19,709 INFO L78 Accepts]: Start accepts. Automaton has 9528 states and 16902 transitions. Word has length 105 [2020-12-22 05:59:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:19,710 INFO L481 AbstractCegarLoop]: Abstraction has 9528 states and 16902 transitions. [2020-12-22 05:59:19,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 9528 states and 16902 transitions. [2020-12-22 05:59:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 05:59:19,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:19,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:19,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 05:59:19,713 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:19,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:19,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1902219059, now seen corresponding path program 1 times [2020-12-22 05:59:19,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:19,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406388673] [2020-12-22 05:59:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:19,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406388673] [2020-12-22 05:59:19,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:19,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:19,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123910253] [2020-12-22 05:59:19,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:19,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:19,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:19,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:19,828 INFO L87 Difference]: Start difference. First operand 9528 states and 16902 transitions. Second operand 5 states. [2020-12-22 05:59:20,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:20,875 INFO L93 Difference]: Finished difference Result 15714 states and 27973 transitions. [2020-12-22 05:59:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:20,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 05:59:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:20,897 INFO L225 Difference]: With dead ends: 15714 [2020-12-22 05:59:20,897 INFO L226 Difference]: Without dead ends: 15701 [2020-12-22 05:59:20,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15701 states. [2020-12-22 05:59:21,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15701 to 9546. [2020-12-22 05:59:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9546 states. [2020-12-22 05:59:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9546 states to 9546 states and 16920 transitions. [2020-12-22 05:59:21,659 INFO L78 Accepts]: Start accepts. Automaton has 9546 states and 16920 transitions. Word has length 105 [2020-12-22 05:59:21,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:21,660 INFO L481 AbstractCegarLoop]: Abstraction has 9546 states and 16920 transitions. [2020-12-22 05:59:21,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9546 states and 16920 transitions. [2020-12-22 05:59:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 05:59:21,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:21,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:21,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 05:59:21,663 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:21,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:21,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1579326840, now seen corresponding path program 1 times [2020-12-22 05:59:21,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:21,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773835172] [2020-12-22 05:59:21,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:21,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773835172] [2020-12-22 05:59:21,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:21,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:21,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700220253] [2020-12-22 05:59:21,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:21,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:21,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:21,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:21,753 INFO L87 Difference]: Start difference. First operand 9546 states and 16920 transitions. Second operand 6 states. [2020-12-22 05:59:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:22,438 INFO L93 Difference]: Finished difference Result 9565 states and 16938 transitions. [2020-12-22 05:59:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:22,438 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-12-22 05:59:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:22,449 INFO L225 Difference]: With dead ends: 9565 [2020-12-22 05:59:22,450 INFO L226 Difference]: Without dead ends: 9552 [2020-12-22 05:59:22,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9552 states. [2020-12-22 05:59:23,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9552 to 9546. [2020-12-22 05:59:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9546 states. [2020-12-22 05:59:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9546 states to 9546 states and 16910 transitions. [2020-12-22 05:59:23,166 INFO L78 Accepts]: Start accepts. Automaton has 9546 states and 16910 transitions. Word has length 107 [2020-12-22 05:59:23,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:23,166 INFO L481 AbstractCegarLoop]: Abstraction has 9546 states and 16910 transitions. [2020-12-22 05:59:23,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 9546 states and 16910 transitions. [2020-12-22 05:59:23,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 05:59:23,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:23,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:23,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 05:59:23,170 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:23,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:23,170 INFO L82 PathProgramCache]: Analyzing trace with hash -225264353, now seen corresponding path program 1 times [2020-12-22 05:59:23,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:23,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868839173] [2020-12-22 05:59:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:23,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868839173] [2020-12-22 05:59:23,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:23,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:23,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463050884] [2020-12-22 05:59:23,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:23,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:23,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:23,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:23,262 INFO L87 Difference]: Start difference. First operand 9546 states and 16910 transitions. Second operand 5 states. [2020-12-22 05:59:25,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:25,135 INFO L93 Difference]: Finished difference Result 22678 states and 39950 transitions. [2020-12-22 05:59:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:25,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-12-22 05:59:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:25,153 INFO L225 Difference]: With dead ends: 22678 [2020-12-22 05:59:25,154 INFO L226 Difference]: Without dead ends: 14881 [2020-12-22 05:59:25,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:25,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14881 states. [2020-12-22 05:59:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14881 to 9546. [2020-12-22 05:59:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9546 states. [2020-12-22 05:59:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9546 states to 9546 states and 16900 transitions. [2020-12-22 05:59:25,895 INFO L78 Accepts]: Start accepts. Automaton has 9546 states and 16900 transitions. Word has length 114 [2020-12-22 05:59:25,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:25,896 INFO L481 AbstractCegarLoop]: Abstraction has 9546 states and 16900 transitions. [2020-12-22 05:59:25,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:25,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9546 states and 16900 transitions. [2020-12-22 05:59:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 05:59:25,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:25,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:25,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 05:59:25,899 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:25,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:25,900 INFO L82 PathProgramCache]: Analyzing trace with hash 732459615, now seen corresponding path program 1 times [2020-12-22 05:59:25,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:25,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224752458] [2020-12-22 05:59:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:26,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224752458] [2020-12-22 05:59:26,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:26,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:59:26,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202961135] [2020-12-22 05:59:26,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:59:26,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:26,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:59:26,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:26,052 INFO L87 Difference]: Start difference. First operand 9546 states and 16900 transitions. Second operand 7 states. [2020-12-22 05:59:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:27,281 INFO L93 Difference]: Finished difference Result 15239 states and 27118 transitions. [2020-12-22 05:59:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:27,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-12-22 05:59:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:27,301 INFO L225 Difference]: With dead ends: 15239 [2020-12-22 05:59:27,301 INFO L226 Difference]: Without dead ends: 15226 [2020-12-22 05:59:27,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:27,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15226 states. [2020-12-22 05:59:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15226 to 9561. [2020-12-22 05:59:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9561 states. [2020-12-22 05:59:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9561 states to 9561 states and 16910 transitions. [2020-12-22 05:59:28,004 INFO L78 Accepts]: Start accepts. Automaton has 9561 states and 16910 transitions. Word has length 119 [2020-12-22 05:59:28,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:28,004 INFO L481 AbstractCegarLoop]: Abstraction has 9561 states and 16910 transitions. [2020-12-22 05:59:28,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:59:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 9561 states and 16910 transitions. [2020-12-22 05:59:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 05:59:28,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:28,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:28,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 05:59:28,008 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1415770589, now seen corresponding path program 1 times [2020-12-22 05:59:28,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:28,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255235953] [2020-12-22 05:59:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:28,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255235953] [2020-12-22 05:59:28,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:28,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:28,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068044748] [2020-12-22 05:59:28,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:28,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:28,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:28,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:28,107 INFO L87 Difference]: Start difference. First operand 9561 states and 16910 transitions. Second operand 5 states. [2020-12-22 05:59:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:32,035 INFO L93 Difference]: Finished difference Result 47660 states and 85883 transitions. [2020-12-22 05:59:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:32,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-22 05:59:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:32,082 INFO L225 Difference]: With dead ends: 47660 [2020-12-22 05:59:32,082 INFO L226 Difference]: Without dead ends: 39848 [2020-12-22 05:59:32,093 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 05:59:32,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39848 states. [2020-12-22 05:59:33,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39848 to 18469. [2020-12-22 05:59:33,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18469 states. [2020-12-22 05:59:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18469 states to 18469 states and 32795 transitions. [2020-12-22 05:59:33,670 INFO L78 Accepts]: Start accepts. Automaton has 18469 states and 32795 transitions. Word has length 135 [2020-12-22 05:59:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:33,670 INFO L481 AbstractCegarLoop]: Abstraction has 18469 states and 32795 transitions. [2020-12-22 05:59:33,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 18469 states and 32795 transitions. [2020-12-22 05:59:33,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 05:59:33,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:33,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:33,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 05:59:33,675 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:33,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:33,676 INFO L82 PathProgramCache]: Analyzing trace with hash 7146384, now seen corresponding path program 1 times [2020-12-22 05:59:33,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:33,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944590108] [2020-12-22 05:59:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:33,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944590108] [2020-12-22 05:59:33,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:33,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:33,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808125740] [2020-12-22 05:59:33,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:33,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:33,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:33,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:33,749 INFO L87 Difference]: Start difference. First operand 18469 states and 32795 transitions. Second operand 3 states. [2020-12-22 05:59:36,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:36,467 INFO L93 Difference]: Finished difference Result 42958 states and 76182 transitions. [2020-12-22 05:59:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:36,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-12-22 05:59:36,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:36,505 INFO L225 Difference]: With dead ends: 42958 [2020-12-22 05:59:36,505 INFO L226 Difference]: Without dead ends: 26971 [2020-12-22 05:59:36,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26971 states. [2020-12-22 05:59:38,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26971 to 18037. [2020-12-22 05:59:38,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18037 states. [2020-12-22 05:59:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18037 states to 18037 states and 31882 transitions. [2020-12-22 05:59:38,165 INFO L78 Accepts]: Start accepts. Automaton has 18037 states and 31882 transitions. Word has length 136 [2020-12-22 05:59:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:38,166 INFO L481 AbstractCegarLoop]: Abstraction has 18037 states and 31882 transitions. [2020-12-22 05:59:38,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 18037 states and 31882 transitions. [2020-12-22 05:59:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 05:59:38,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:38,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:38,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 05:59:38,173 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:38,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:38,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1975806490, now seen corresponding path program 1 times [2020-12-22 05:59:38,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:38,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125373767] [2020-12-22 05:59:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:38,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125373767] [2020-12-22 05:59:38,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:38,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:38,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022573815] [2020-12-22 05:59:38,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:38,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:38,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:38,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:38,257 INFO L87 Difference]: Start difference. First operand 18037 states and 31882 transitions. Second operand 5 states. [2020-12-22 05:59:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:40,985 INFO L93 Difference]: Finished difference Result 37663 states and 66508 transitions. [2020-12-22 05:59:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:40,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-12-22 05:59:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:41,008 INFO L225 Difference]: With dead ends: 37663 [2020-12-22 05:59:41,008 INFO L226 Difference]: Without dead ends: 20466 [2020-12-22 05:59:41,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:41,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20466 states. [2020-12-22 05:59:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20466 to 18037. [2020-12-22 05:59:42,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18037 states. [2020-12-22 05:59:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18037 states to 18037 states and 31482 transitions. [2020-12-22 05:59:42,534 INFO L78 Accepts]: Start accepts. Automaton has 18037 states and 31482 transitions. Word has length 148 [2020-12-22 05:59:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:42,535 INFO L481 AbstractCegarLoop]: Abstraction has 18037 states and 31482 transitions. [2020-12-22 05:59:42,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 18037 states and 31482 transitions. [2020-12-22 05:59:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 05:59:42,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:42,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:42,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 05:59:42,542 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:42,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1934975093, now seen corresponding path program 1 times [2020-12-22 05:59:42,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:42,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250215575] [2020-12-22 05:59:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:42,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250215575] [2020-12-22 05:59:42,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:42,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:42,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674502123] [2020-12-22 05:59:42,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:42,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:42,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:42,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:42,627 INFO L87 Difference]: Start difference. First operand 18037 states and 31482 transitions. Second operand 4 states. [2020-12-22 05:59:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:45,288 INFO L93 Difference]: Finished difference Result 38066 states and 66483 transitions. [2020-12-22 05:59:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:45,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-12-22 05:59:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:45,313 INFO L225 Difference]: With dead ends: 38066 [2020-12-22 05:59:45,313 INFO L226 Difference]: Without dead ends: 20624 [2020-12-22 05:59:45,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20624 states. [2020-12-22 05:59:46,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20624 to 18037. [2020-12-22 05:59:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18037 states. [2020-12-22 05:59:46,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18037 states to 18037 states and 31097 transitions. [2020-12-22 05:59:46,883 INFO L78 Accepts]: Start accepts. Automaton has 18037 states and 31097 transitions. Word has length 153 [2020-12-22 05:59:46,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:46,884 INFO L481 AbstractCegarLoop]: Abstraction has 18037 states and 31097 transitions. [2020-12-22 05:59:46,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand 18037 states and 31097 transitions. [2020-12-22 05:59:46,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 05:59:46,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:46,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:46,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 05:59:46,891 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:46,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:46,891 INFO L82 PathProgramCache]: Analyzing trace with hash 270146209, now seen corresponding path program 1 times [2020-12-22 05:59:46,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:46,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270513504] [2020-12-22 05:59:46,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:46,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270513504] [2020-12-22 05:59:46,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:46,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:46,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747498234] [2020-12-22 05:59:46,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:46,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:46,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:46,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:46,983 INFO L87 Difference]: Start difference. First operand 18037 states and 31097 transitions. Second operand 3 states. [2020-12-22 05:59:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:50,535 INFO L93 Difference]: Finished difference Result 47424 states and 81623 transitions. [2020-12-22 05:59:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:50,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 05:59:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:50,570 INFO L225 Difference]: With dead ends: 47424 [2020-12-22 05:59:50,570 INFO L226 Difference]: Without dead ends: 30983 [2020-12-22 05:59:50,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:50,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30983 states. [2020-12-22 05:59:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30983 to 17877. [2020-12-22 05:59:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17877 states. [2020-12-22 05:59:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17877 states to 17877 states and 30617 transitions. [2020-12-22 05:59:52,178 INFO L78 Accepts]: Start accepts. Automaton has 17877 states and 30617 transitions. Word has length 157 [2020-12-22 05:59:52,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:52,178 INFO L481 AbstractCegarLoop]: Abstraction has 17877 states and 30617 transitions. [2020-12-22 05:59:52,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:52,179 INFO L276 IsEmpty]: Start isEmpty. Operand 17877 states and 30617 transitions. [2020-12-22 05:59:52,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 05:59:52,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:52,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:52,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-22 05:59:52,186 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:52,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:52,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1686162716, now seen corresponding path program 1 times [2020-12-22 05:59:52,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:52,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309321707] [2020-12-22 05:59:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:52,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309321707] [2020-12-22 05:59:52,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:52,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:52,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477530857] [2020-12-22 05:59:52,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:52,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:52,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:52,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:52,273 INFO L87 Difference]: Start difference. First operand 17877 states and 30617 transitions. Second operand 4 states. [2020-12-22 05:59:56,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:56,725 INFO L93 Difference]: Finished difference Result 47208 states and 81358 transitions. [2020-12-22 05:59:56,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:56,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-12-22 05:59:56,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:56,765 INFO L225 Difference]: With dead ends: 47208 [2020-12-22 05:59:56,765 INFO L226 Difference]: Without dead ends: 29620 [2020-12-22 05:59:56,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29620 states. [2020-12-22 05:59:58,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29620 to 17877. [2020-12-22 05:59:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17877 states. [2020-12-22 05:59:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17877 states to 17877 states and 30134 transitions. [2020-12-22 05:59:58,423 INFO L78 Accepts]: Start accepts. Automaton has 17877 states and 30134 transitions. Word has length 158 [2020-12-22 05:59:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:58,423 INFO L481 AbstractCegarLoop]: Abstraction has 17877 states and 30134 transitions. [2020-12-22 05:59:58,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 17877 states and 30134 transitions. [2020-12-22 05:59:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-22 05:59:58,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:58,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:58,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-22 05:59:58,431 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:58,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:58,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1673854823, now seen corresponding path program 1 times [2020-12-22 05:59:58,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:58,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621150720] [2020-12-22 05:59:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:58,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621150720] [2020-12-22 05:59:58,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:58,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:58,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795084843] [2020-12-22 05:59:58,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:58,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:58,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:58,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:58,516 INFO L87 Difference]: Start difference. First operand 17877 states and 30134 transitions. Second operand 4 states. [2020-12-22 06:00:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:02,786 INFO L93 Difference]: Finished difference Result 45322 states and 76661 transitions. [2020-12-22 06:00:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:02,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-12-22 06:00:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:02,821 INFO L225 Difference]: With dead ends: 45322 [2020-12-22 06:00:02,821 INFO L226 Difference]: Without dead ends: 27710 [2020-12-22 06:00:02,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27710 states. [2020-12-22 06:00:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27710 to 17877. [2020-12-22 06:00:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17877 states. [2020-12-22 06:00:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17877 states to 17877 states and 29571 transitions. [2020-12-22 06:00:04,559 INFO L78 Accepts]: Start accepts. Automaton has 17877 states and 29571 transitions. Word has length 160 [2020-12-22 06:00:04,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:04,560 INFO L481 AbstractCegarLoop]: Abstraction has 17877 states and 29571 transitions. [2020-12-22 06:00:04,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:04,560 INFO L276 IsEmpty]: Start isEmpty. Operand 17877 states and 29571 transitions. [2020-12-22 06:00:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-12-22 06:00:04,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:04,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:04,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-22 06:00:04,570 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:04,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:04,570 INFO L82 PathProgramCache]: Analyzing trace with hash 678126428, now seen corresponding path program 1 times [2020-12-22 06:00:04,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:04,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045558502] [2020-12-22 06:00:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:04,659 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 06:00:04,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045558502] [2020-12-22 06:00:04,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:04,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:04,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909346350] [2020-12-22 06:00:04,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:04,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:04,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:04,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:04,661 INFO L87 Difference]: Start difference. First operand 17877 states and 29571 transitions. Second operand 4 states. [2020-12-22 06:00:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:07,486 INFO L93 Difference]: Finished difference Result 37746 states and 62628 transitions. [2020-12-22 06:00:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:07,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-12-22 06:00:07,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:07,513 INFO L225 Difference]: With dead ends: 37746 [2020-12-22 06:00:07,513 INFO L226 Difference]: Without dead ends: 20464 [2020-12-22 06:00:07,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:07,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20464 states. [2020-12-22 06:00:09,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20464 to 17877. [2020-12-22 06:00:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17877 states. [2020-12-22 06:00:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17877 states to 17877 states and 29266 transitions. [2020-12-22 06:00:09,240 INFO L78 Accepts]: Start accepts. Automaton has 17877 states and 29266 transitions. Word has length 162 [2020-12-22 06:00:09,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:09,240 INFO L481 AbstractCegarLoop]: Abstraction has 17877 states and 29266 transitions. [2020-12-22 06:00:09,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 17877 states and 29266 transitions. [2020-12-22 06:00:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-12-22 06:00:09,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:09,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:09,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 06:00:09,246 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1461322561, now seen corresponding path program 1 times [2020-12-22 06:00:09,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:09,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28867144] [2020-12-22 06:00:09,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:09,350 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 06:00:09,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28867144] [2020-12-22 06:00:09,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:09,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:09,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139284303] [2020-12-22 06:00:09,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:09,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:09,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:09,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:09,352 INFO L87 Difference]: Start difference. First operand 17877 states and 29266 transitions. Second operand 5 states. [2020-12-22 06:00:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:13,963 INFO L93 Difference]: Finished difference Result 49927 states and 81990 transitions. [2020-12-22 06:00:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:13,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-12-22 06:00:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:14,130 INFO L225 Difference]: With dead ends: 49927 [2020-12-22 06:00:14,131 INFO L226 Difference]: Without dead ends: 32616 [2020-12-22 06:00:14,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:00:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32616 states. [2020-12-22 06:00:15,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32616 to 16673. [2020-12-22 06:00:15,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16673 states. [2020-12-22 06:00:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16673 states to 16673 states and 27573 transitions. [2020-12-22 06:00:15,810 INFO L78 Accepts]: Start accepts. Automaton has 16673 states and 27573 transitions. Word has length 162 [2020-12-22 06:00:15,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:15,810 INFO L481 AbstractCegarLoop]: Abstraction has 16673 states and 27573 transitions. [2020-12-22 06:00:15,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 16673 states and 27573 transitions. [2020-12-22 06:00:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 06:00:15,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:15,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:15,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-22 06:00:15,816 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:15,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1750741271, now seen corresponding path program 1 times [2020-12-22 06:00:15,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:15,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122883243] [2020-12-22 06:00:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:15,929 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 06:00:15,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122883243] [2020-12-22 06:00:15,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:15,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:15,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009104458] [2020-12-22 06:00:15,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:15,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:15,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:15,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:15,931 INFO L87 Difference]: Start difference. First operand 16673 states and 27573 transitions. Second operand 5 states. [2020-12-22 06:00:21,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:21,358 INFO L93 Difference]: Finished difference Result 51162 states and 83892 transitions. [2020-12-22 06:00:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:00:21,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-12-22 06:00:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:21,450 INFO L225 Difference]: With dead ends: 51162 [2020-12-22 06:00:21,450 INFO L226 Difference]: Without dead ends: 36589 [2020-12-22 06:00:21,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:00:21,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36589 states. [2020-12-22 06:00:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36589 to 16641. [2020-12-22 06:00:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16641 states. [2020-12-22 06:00:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16641 states to 16641 states and 27501 transitions. [2020-12-22 06:00:23,327 INFO L78 Accepts]: Start accepts. Automaton has 16641 states and 27501 transitions. Word has length 163 [2020-12-22 06:00:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:23,327 INFO L481 AbstractCegarLoop]: Abstraction has 16641 states and 27501 transitions. [2020-12-22 06:00:23,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 16641 states and 27501 transitions. [2020-12-22 06:00:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 06:00:23,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:23,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:23,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 06:00:23,333 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash 433510570, now seen corresponding path program 1 times [2020-12-22 06:00:23,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:23,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501009280] [2020-12-22 06:00:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:23,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501009280] [2020-12-22 06:00:23,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:23,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:23,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138209318] [2020-12-22 06:00:23,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:23,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:23,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:23,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:23,433 INFO L87 Difference]: Start difference. First operand 16641 states and 27501 transitions. Second operand 6 states. [2020-12-22 06:00:28,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:28,803 INFO L93 Difference]: Finished difference Result 48514 states and 80471 transitions. [2020-12-22 06:00:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:00:28,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-12-22 06:00:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:28,841 INFO L225 Difference]: With dead ends: 48514 [2020-12-22 06:00:28,841 INFO L226 Difference]: Without dead ends: 33687 [2020-12-22 06:00:28,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33687 states. [2020-12-22 06:00:31,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33687 to 23105. [2020-12-22 06:00:31,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23105 states. [2020-12-22 06:00:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23105 states to 23105 states and 38166 transitions. [2020-12-22 06:00:31,201 INFO L78 Accepts]: Start accepts. Automaton has 23105 states and 38166 transitions. Word has length 168 [2020-12-22 06:00:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:31,201 INFO L481 AbstractCegarLoop]: Abstraction has 23105 states and 38166 transitions. [2020-12-22 06:00:31,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 23105 states and 38166 transitions. [2020-12-22 06:00:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 06:00:31,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:31,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:31,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-12-22 06:00:31,209 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:31,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:31,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1568700648, now seen corresponding path program 1 times [2020-12-22 06:00:31,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:31,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131992073] [2020-12-22 06:00:31,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:00:31,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131992073] [2020-12-22 06:00:31,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:31,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:31,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909023126] [2020-12-22 06:00:31,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:31,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:31,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:31,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:31,293 INFO L87 Difference]: Start difference. First operand 23105 states and 38166 transitions. Second operand 3 states. [2020-12-22 06:00:33,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:33,133 INFO L93 Difference]: Finished difference Result 38451 states and 63700 transitions. [2020-12-22 06:00:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:33,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-12-22 06:00:33,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:33,155 INFO L225 Difference]: With dead ends: 38451 [2020-12-22 06:00:33,155 INFO L226 Difference]: Without dead ends: 20243 [2020-12-22 06:00:33,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20243 states. [2020-12-22 06:00:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20243 to 20230. [2020-12-22 06:00:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20230 states. [2020-12-22 06:00:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20230 states to 20230 states and 33970 transitions. [2020-12-22 06:00:35,370 INFO L78 Accepts]: Start accepts. Automaton has 20230 states and 33970 transitions. Word has length 168 [2020-12-22 06:00:35,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:35,370 INFO L481 AbstractCegarLoop]: Abstraction has 20230 states and 33970 transitions. [2020-12-22 06:00:35,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 20230 states and 33970 transitions. [2020-12-22 06:00:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-22 06:00:35,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:35,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:35,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 06:00:35,378 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:35,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:35,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1207726500, now seen corresponding path program 1 times [2020-12-22 06:00:35,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:35,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529544400] [2020-12-22 06:00:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:00:35,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529544400] [2020-12-22 06:00:35,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:35,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:35,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241292812] [2020-12-22 06:00:35,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:35,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:35,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:35,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:35,481 INFO L87 Difference]: Start difference. First operand 20230 states and 33970 transitions. Second operand 5 states. [2020-12-22 06:00:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:39,301 INFO L93 Difference]: Finished difference Result 55762 states and 93434 transitions. [2020-12-22 06:00:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:39,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-12-22 06:00:39,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:39,345 INFO L225 Difference]: With dead ends: 55762 [2020-12-22 06:00:39,345 INFO L226 Difference]: Without dead ends: 40385 [2020-12-22 06:00:39,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:39,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40385 states. [2020-12-22 06:00:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40385 to 40385. [2020-12-22 06:00:42,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40385 states. [2020-12-22 06:00:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40385 states to 40385 states and 67835 transitions. [2020-12-22 06:00:43,043 INFO L78 Accepts]: Start accepts. Automaton has 40385 states and 67835 transitions. Word has length 169 [2020-12-22 06:00:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:43,043 INFO L481 AbstractCegarLoop]: Abstraction has 40385 states and 67835 transitions. [2020-12-22 06:00:43,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 40385 states and 67835 transitions. [2020-12-22 06:00:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-22 06:00:43,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:43,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:43,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-22 06:00:43,063 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:43,063 INFO L82 PathProgramCache]: Analyzing trace with hash 847639701, now seen corresponding path program 1 times [2020-12-22 06:00:43,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:43,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96753121] [2020-12-22 06:00:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:43,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96753121] [2020-12-22 06:00:43,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:43,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:43,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374608170] [2020-12-22 06:00:43,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:43,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:43,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:43,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:43,197 INFO L87 Difference]: Start difference. First operand 40385 states and 67835 transitions. Second operand 6 states. [2020-12-22 06:00:51,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:51,285 INFO L93 Difference]: Finished difference Result 106897 states and 179247 transitions. [2020-12-22 06:00:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:00:51,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-12-22 06:00:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:51,377 INFO L225 Difference]: With dead ends: 106897 [2020-12-22 06:00:51,377 INFO L226 Difference]: Without dead ends: 70358 [2020-12-22 06:00:51,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70358 states. [2020-12-22 06:00:56,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70358 to 53261. [2020-12-22 06:00:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53261 states. [2020-12-22 06:00:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53261 states to 53261 states and 89499 transitions. [2020-12-22 06:00:56,227 INFO L78 Accepts]: Start accepts. Automaton has 53261 states and 89499 transitions. Word has length 169 [2020-12-22 06:00:56,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:56,227 INFO L481 AbstractCegarLoop]: Abstraction has 53261 states and 89499 transitions. [2020-12-22 06:00:56,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:56,227 INFO L276 IsEmpty]: Start isEmpty. Operand 53261 states and 89499 transitions. [2020-12-22 06:00:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 06:00:56,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:56,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:56,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-12-22 06:00:56,252 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:56,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:56,252 INFO L82 PathProgramCache]: Analyzing trace with hash 83258584, now seen corresponding path program 1 times [2020-12-22 06:00:56,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:56,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79279835] [2020-12-22 06:00:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:00:56,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79279835] [2020-12-22 06:00:56,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:56,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:56,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616336317] [2020-12-22 06:00:56,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:56,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:56,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:56,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:56,346 INFO L87 Difference]: Start difference. First operand 53261 states and 89499 transitions. Second operand 5 states. [2020-12-22 06:01:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:08,728 INFO L93 Difference]: Finished difference Result 196037 states and 328907 transitions. [2020-12-22 06:01:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:08,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-12-22 06:01:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:08,982 INFO L225 Difference]: With dead ends: 196037 [2020-12-22 06:01:08,982 INFO L226 Difference]: Without dead ends: 152502 [2020-12-22 06:01:09,233 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 06:01:09,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152502 states. [2020-12-22 06:01:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152502 to 53261. [2020-12-22 06:01:14,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53261 states. [2020-12-22 06:01:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53261 states to 53261 states and 89479 transitions. [2020-12-22 06:01:14,777 INFO L78 Accepts]: Start accepts. Automaton has 53261 states and 89479 transitions. Word has length 170 [2020-12-22 06:01:14,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:14,777 INFO L481 AbstractCegarLoop]: Abstraction has 53261 states and 89479 transitions. [2020-12-22 06:01:14,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:14,777 INFO L276 IsEmpty]: Start isEmpty. Operand 53261 states and 89479 transitions. [2020-12-22 06:01:14,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 06:01:14,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:14,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:01:14,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-12-22 06:01:14,798 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:14,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:14,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1781331203, now seen corresponding path program 1 times [2020-12-22 06:01:14,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:14,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379937787] [2020-12-22 06:01:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:01:14,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379937787] [2020-12-22 06:01:14,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:14,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:14,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995167017] [2020-12-22 06:01:14,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:14,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:14,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:14,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:14,907 INFO L87 Difference]: Start difference. First operand 53261 states and 89479 transitions. Second operand 5 states. [2020-12-22 06:01:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:24,370 INFO L93 Difference]: Finished difference Result 149979 states and 251574 transitions. [2020-12-22 06:01:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:24,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-12-22 06:01:24,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:24,511 INFO L225 Difference]: With dead ends: 149979 [2020-12-22 06:01:24,511 INFO L226 Difference]: Without dead ends: 106392 [2020-12-22 06:01:24,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106392 states. [2020-12-22 06:01:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106392 to 106388. [2020-12-22 06:01:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106388 states. [2020-12-22 06:01:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106388 states to 106388 states and 178764 transitions. [2020-12-22 06:01:34,441 INFO L78 Accepts]: Start accepts. Automaton has 106388 states and 178764 transitions. Word has length 170 [2020-12-22 06:01:34,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:34,441 INFO L481 AbstractCegarLoop]: Abstraction has 106388 states and 178764 transitions. [2020-12-22 06:01:34,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 106388 states and 178764 transitions. [2020-12-22 06:01:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 06:01:34,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:34,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:01:34,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-12-22 06:01:34,478 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:34,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1085735748, now seen corresponding path program 1 times [2020-12-22 06:01:34,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:34,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334922821] [2020-12-22 06:01:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:34,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334922821] [2020-12-22 06:01:34,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:34,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:34,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153150202] [2020-12-22 06:01:34,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:34,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:34,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:34,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:34,611 INFO L87 Difference]: Start difference. First operand 106388 states and 178764 transitions. Second operand 6 states. [2020-12-22 06:01:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:52,100 INFO L93 Difference]: Finished difference Result 265100 states and 444436 transitions. [2020-12-22 06:01:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:01:52,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-12-22 06:01:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:52,407 INFO L225 Difference]: With dead ends: 265100 [2020-12-22 06:01:52,407 INFO L226 Difference]: Without dead ends: 166338 [2020-12-22 06:01:52,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:01:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166338 states. [2020-12-22 06:02:05,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166338 to 136583. [2020-12-22 06:02:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136583 states. [2020-12-22 06:02:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136583 states to 136583 states and 228463 transitions. [2020-12-22 06:02:06,032 INFO L78 Accepts]: Start accepts. Automaton has 136583 states and 228463 transitions. Word has length 170 [2020-12-22 06:02:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:06,032 INFO L481 AbstractCegarLoop]: Abstraction has 136583 states and 228463 transitions. [2020-12-22 06:02:06,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 136583 states and 228463 transitions. [2020-12-22 06:02:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 06:02:06,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:06,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:06,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-12-22 06:02:06,090 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:06,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:06,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1442742321, now seen corresponding path program 1 times [2020-12-22 06:02:06,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:06,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923230870] [2020-12-22 06:02:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:06,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923230870] [2020-12-22 06:02:06,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:06,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:06,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889327549] [2020-12-22 06:02:06,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:06,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:06,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:06,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:06,198 INFO L87 Difference]: Start difference. First operand 136583 states and 228463 transitions. Second operand 6 states.