/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:05:16,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:05:16,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:05:16,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:05:16,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:05:16,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:05:16,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:05:16,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:05:16,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:05:16,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:05:16,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:05:16,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:05:16,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:05:16,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:05:16,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:05:16,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:05:16,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:05:16,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:05:16,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:05:16,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:05:16,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:05:16,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:05:16,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:05:16,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:05:16,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:05:16,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:05:16,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:05:16,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:05:16,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:05:16,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:05:16,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:05:16,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:05:16,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:05:16,276 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:05:16,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:05:16,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:05:16,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:05:16,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:05:16,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:05:16,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:05:16,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:05:16,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:05:16,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:05:16,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:05:16,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:05:16,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:05:16,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:05:16,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:05:16,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:05:16,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:05:16,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:05:16,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:05:16,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:05:16,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:05:16,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:05:16,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:05:16,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:05:16,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:05:16,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:05:16,694 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:05:16,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c [2020-12-22 10:05:16,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d422af499/ccf1661c905242f19d73397889d7eae8/FLAG8c7896edf [2020-12-22 10:05:17,818 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:05:17,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c [2020-12-22 10:05:17,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d422af499/ccf1661c905242f19d73397889d7eae8/FLAG8c7896edf [2020-12-22 10:05:18,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d422af499/ccf1661c905242f19d73397889d7eae8 [2020-12-22 10:05:18,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:05:18,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:05:18,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:05:18,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:05:18,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:05:18,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:05:18" (1/1) ... [2020-12-22 10:05:18,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203d815e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:18, skipping insertion in model container [2020-12-22 10:05:18,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:05:18" (1/1) ... [2020-12-22 10:05:18,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:05:18,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:05:18,799 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c[15614,15627] [2020-12-22 10:05:18,826 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c[17246,17259] [2020-12-22 10:05:19,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:05:19,855 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:05:19,929 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c[15614,15627] [2020-12-22 10:05:19,936 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c[17246,17259] [2020-12-22 10:05:20,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:05:20,609 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:05:20,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20 WrapperNode [2020-12-22 10:05:20,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:05:20,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:05:20,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:05:20,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:05:20,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (1/1) ... [2020-12-22 10:05:20,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (1/1) ... [2020-12-22 10:05:21,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:05:21,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:05:21,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:05:21,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:05:21,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (1/1) ... [2020-12-22 10:05:21,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (1/1) ... [2020-12-22 10:05:21,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (1/1) ... [2020-12-22 10:05:21,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (1/1) ... [2020-12-22 10:05:21,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (1/1) ... [2020-12-22 10:05:21,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (1/1) ... [2020-12-22 10:05:21,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (1/1) ... [2020-12-22 10:05:21,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:05:21,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:05:21,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:05:21,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:05:21,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:05:21,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:05:21,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:05:21,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:05:21,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:05:27,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:05:27,199 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2020-12-22 10:05:27,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:05:27 BoogieIcfgContainer [2020-12-22 10:05:27,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:05:27,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:05:27,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:05:27,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:05:27,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:05:18" (1/3) ... [2020-12-22 10:05:27,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4707c9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:05:27, skipping insertion in model container [2020-12-22 10:05:27,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:05:20" (2/3) ... [2020-12-22 10:05:27,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4707c9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:05:27, skipping insertion in model container [2020-12-22 10:05:27,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:05:27" (3/3) ... [2020-12-22 10:05:27,212 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label00.c [2020-12-22 10:05:27,218 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:05:27,225 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:05:27,244 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:05:27,279 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:05:27,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:05:27,279 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:05:27,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:05:27,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:05:27,280 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:05:27,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:05:27,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:05:27,314 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states. [2020-12-22 10:05:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 10:05:27,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:27,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:27,323 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:27,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1577302293, now seen corresponding path program 1 times [2020-12-22 10:05:27,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:27,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120043333] [2020-12-22 10:05:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:27,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120043333] [2020-12-22 10:05:27,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:27,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:05:27,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969500545] [2020-12-22 10:05:27,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:27,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:27,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:27,711 INFO L87 Difference]: Start difference. First operand 927 states. Second operand 3 states. [2020-12-22 10:05:33,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:33,828 INFO L93 Difference]: Finished difference Result 2561 states and 4922 transitions. [2020-12-22 10:05:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:33,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-22 10:05:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:33,879 INFO L225 Difference]: With dead ends: 2561 [2020-12-22 10:05:33,879 INFO L226 Difference]: Without dead ends: 1612 [2020-12-22 10:05:33,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2020-12-22 10:05:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2020-12-22 10:05:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2020-12-22 10:05:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2961 transitions. [2020-12-22 10:05:34,038 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2961 transitions. Word has length 16 [2020-12-22 10:05:34,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:34,039 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2961 transitions. [2020-12-22 10:05:34,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:34,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2961 transitions. [2020-12-22 10:05:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:05:34,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:34,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:34,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:05:34,042 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:34,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:34,043 INFO L82 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2020-12-22 10:05:34,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:34,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325902064] [2020-12-22 10:05:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:34,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325902064] [2020-12-22 10:05:34,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:34,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:05:34,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942373550] [2020-12-22 10:05:34,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:05:34,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:34,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:05:34,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:05:34,191 INFO L87 Difference]: Start difference. First operand 1612 states and 2961 transitions. Second operand 5 states. [2020-12-22 10:05:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:34,315 INFO L93 Difference]: Finished difference Result 1677 states and 3062 transitions. [2020-12-22 10:05:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:05:34,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 10:05:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:34,327 INFO L225 Difference]: With dead ends: 1677 [2020-12-22 10:05:34,327 INFO L226 Difference]: Without dead ends: 1612 [2020-12-22 10:05:34,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:05:34,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2020-12-22 10:05:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2020-12-22 10:05:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2020-12-22 10:05:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2921 transitions. [2020-12-22 10:05:34,376 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2921 transitions. Word has length 38 [2020-12-22 10:05:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:34,376 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2921 transitions. [2020-12-22 10:05:34,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:05:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2921 transitions. [2020-12-22 10:05:34,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:05:34,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:34,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:34,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:05:34,381 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:34,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:34,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2020-12-22 10:05:34,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:34,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364761974] [2020-12-22 10:05:34,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:34,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364761974] [2020-12-22 10:05:34,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:34,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:05:34,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188386374] [2020-12-22 10:05:34,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:34,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:34,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:34,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:34,559 INFO L87 Difference]: Start difference. First operand 1612 states and 2921 transitions. Second operand 3 states. [2020-12-22 10:05:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:34,604 INFO L93 Difference]: Finished difference Result 1728 states and 3105 transitions. [2020-12-22 10:05:34,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:34,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:05:34,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:34,615 INFO L225 Difference]: With dead ends: 1728 [2020-12-22 10:05:34,615 INFO L226 Difference]: Without dead ends: 1667 [2020-12-22 10:05:34,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:34,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-12-22 10:05:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2020-12-22 10:05:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1665 states. [2020-12-22 10:05:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 3006 transitions. [2020-12-22 10:05:34,667 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 3006 transitions. Word has length 77 [2020-12-22 10:05:34,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:34,668 INFO L481 AbstractCegarLoop]: Abstraction has 1665 states and 3006 transitions. [2020-12-22 10:05:34,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:34,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 3006 transitions. [2020-12-22 10:05:34,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:05:34,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:34,675 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] [2020-12-22 10:05:34,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:05:34,677 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:34,677 INFO L82 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2020-12-22 10:05:34,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:34,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300718922] [2020-12-22 10:05:34,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:34,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300718922] [2020-12-22 10:05:34,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:34,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:05:34,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49245438] [2020-12-22 10:05:34,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:34,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:34,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:34,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:34,864 INFO L87 Difference]: Start difference. First operand 1665 states and 3006 transitions. Second operand 3 states. [2020-12-22 10:05:34,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:34,914 INFO L93 Difference]: Finished difference Result 1881 states and 3350 transitions. [2020-12-22 10:05:34,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:34,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:05:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:34,927 INFO L225 Difference]: With dead ends: 1881 [2020-12-22 10:05:34,927 INFO L226 Difference]: Without dead ends: 1767 [2020-12-22 10:05:34,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-12-22 10:05:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1765. [2020-12-22 10:05:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2020-12-22 10:05:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 3165 transitions. [2020-12-22 10:05:34,987 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 3165 transitions. Word has length 77 [2020-12-22 10:05:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:34,989 INFO L481 AbstractCegarLoop]: Abstraction has 1765 states and 3165 transitions. [2020-12-22 10:05:34,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 3165 transitions. [2020-12-22 10:05:34,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:05:34,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:34,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:34,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:05:34,992 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:34,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2020-12-22 10:05:34,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:34,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321965018] [2020-12-22 10:05:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:35,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321965018] [2020-12-22 10:05:35,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:35,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:05:35,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968374104] [2020-12-22 10:05:35,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:35,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:35,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:35,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:35,130 INFO L87 Difference]: Start difference. First operand 1765 states and 3165 transitions. Second operand 3 states. [2020-12-22 10:05:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:35,183 INFO L93 Difference]: Finished difference Result 2169 states and 3807 transitions. [2020-12-22 10:05:35,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:35,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:05:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:35,197 INFO L225 Difference]: With dead ends: 2169 [2020-12-22 10:05:35,198 INFO L226 Difference]: Without dead ends: 1955 [2020-12-22 10:05:35,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2020-12-22 10:05:35,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1953. [2020-12-22 10:05:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1953 states. [2020-12-22 10:05:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3461 transitions. [2020-12-22 10:05:35,260 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3461 transitions. Word has length 77 [2020-12-22 10:05:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:35,263 INFO L481 AbstractCegarLoop]: Abstraction has 1953 states and 3461 transitions. [2020-12-22 10:05:35,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3461 transitions. [2020-12-22 10:05:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:05:35,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:35,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:35,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:05:35,264 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:35,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:35,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2020-12-22 10:05:35,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:35,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081037273] [2020-12-22 10:05:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:35,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081037273] [2020-12-22 10:05:35,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:35,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:05:35,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392630230] [2020-12-22 10:05:35,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:35,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:35,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:35,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:35,343 INFO L87 Difference]: Start difference. First operand 1953 states and 3461 transitions. Second operand 3 states. [2020-12-22 10:05:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:35,407 INFO L93 Difference]: Finished difference Result 2709 states and 4655 transitions. [2020-12-22 10:05:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:35,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:05:35,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:35,421 INFO L225 Difference]: With dead ends: 2709 [2020-12-22 10:05:35,421 INFO L226 Difference]: Without dead ends: 2307 [2020-12-22 10:05:35,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2020-12-22 10:05:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2305. [2020-12-22 10:05:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-12-22 10:05:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 4009 transitions. [2020-12-22 10:05:35,547 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 4009 transitions. Word has length 77 [2020-12-22 10:05:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:35,548 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 4009 transitions. [2020-12-22 10:05:35,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 4009 transitions. [2020-12-22 10:05:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:05:35,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:35,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:35,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:05:35,550 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:35,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2020-12-22 10:05:35,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:35,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746589344] [2020-12-22 10:05:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:35,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746589344] [2020-12-22 10:05:35,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:35,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:05:35,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262782711] [2020-12-22 10:05:35,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:35,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:35,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:35,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:35,685 INFO L87 Difference]: Start difference. First operand 2305 states and 4009 transitions. Second operand 3 states. [2020-12-22 10:05:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:35,766 INFO L93 Difference]: Finished difference Result 3717 states and 6219 transitions. [2020-12-22 10:05:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:35,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:05:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:35,782 INFO L225 Difference]: With dead ends: 3717 [2020-12-22 10:05:35,783 INFO L226 Difference]: Without dead ends: 2963 [2020-12-22 10:05:35,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-12-22 10:05:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2961. [2020-12-22 10:05:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2020-12-22 10:05:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 5017 transitions. [2020-12-22 10:05:35,881 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 5017 transitions. Word has length 77 [2020-12-22 10:05:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:35,883 INFO L481 AbstractCegarLoop]: Abstraction has 2961 states and 5017 transitions. [2020-12-22 10:05:35,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:35,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 5017 transitions. [2020-12-22 10:05:35,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:05:35,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:35,891 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] [2020-12-22 10:05:35,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:05:35,891 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:35,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:35,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2020-12-22 10:05:35,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:35,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613186714] [2020-12-22 10:05:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:36,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613186714] [2020-12-22 10:05:36,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:36,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:05:36,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756153953] [2020-12-22 10:05:36,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:05:36,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:36,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:05:36,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:05:36,041 INFO L87 Difference]: Start difference. First operand 2961 states and 5017 transitions. Second operand 8 states. [2020-12-22 10:05:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:37,031 INFO L93 Difference]: Finished difference Result 19881 states and 31333 transitions. [2020-12-22 10:05:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 10:05:37,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-12-22 10:05:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:37,130 INFO L225 Difference]: With dead ends: 19881 [2020-12-22 10:05:37,130 INFO L226 Difference]: Without dead ends: 18471 [2020-12-22 10:05:37,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:05:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18471 states. [2020-12-22 10:05:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18471 to 4369. [2020-12-22 10:05:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4369 states. [2020-12-22 10:05:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 7145 transitions. [2020-12-22 10:05:37,537 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 7145 transitions. Word has length 77 [2020-12-22 10:05:37,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:37,538 INFO L481 AbstractCegarLoop]: Abstraction has 4369 states and 7145 transitions. [2020-12-22 10:05:37,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:05:37,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 7145 transitions. [2020-12-22 10:05:37,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:05:37,539 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:37,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:37,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:05:37,542 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:37,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:37,542 INFO L82 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2020-12-22 10:05:37,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:37,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039701694] [2020-12-22 10:05:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:37,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039701694] [2020-12-22 10:05:37,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:37,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:05:37,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177374705] [2020-12-22 10:05:37,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:37,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:37,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:37,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:37,657 INFO L87 Difference]: Start difference. First operand 4369 states and 7145 transitions. Second operand 3 states. [2020-12-22 10:05:38,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:38,077 INFO L93 Difference]: Finished difference Result 9653 states and 15179 transitions. [2020-12-22 10:05:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:38,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:05:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:38,096 INFO L225 Difference]: With dead ends: 9653 [2020-12-22 10:05:38,096 INFO L226 Difference]: Without dead ends: 6835 [2020-12-22 10:05:38,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2020-12-22 10:05:38,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6769. [2020-12-22 10:05:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:05:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10633 transitions. [2020-12-22 10:05:38,507 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10633 transitions. Word has length 79 [2020-12-22 10:05:38,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:38,511 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10633 transitions. [2020-12-22 10:05:38,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10633 transitions. [2020-12-22 10:05:38,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:05:38,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:38,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:38,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:05:38,513 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:38,514 INFO L82 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2020-12-22 10:05:38,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:38,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848898428] [2020-12-22 10:05:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:38,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848898428] [2020-12-22 10:05:38,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:38,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:05:38,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592320090] [2020-12-22 10:05:38,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:05:38,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:38,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:05:38,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:05:38,819 INFO L87 Difference]: Start difference. First operand 6769 states and 10633 transitions. Second operand 8 states. [2020-12-22 10:05:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:39,458 INFO L93 Difference]: Finished difference Result 11989 states and 18443 transitions. [2020-12-22 10:05:39,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:05:39,458 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 10:05:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:39,474 INFO L225 Difference]: With dead ends: 11989 [2020-12-22 10:05:39,474 INFO L226 Difference]: Without dead ends: 6771 [2020-12-22 10:05:39,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 10:05:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2020-12-22 10:05:39,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6769. [2020-12-22 10:05:39,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:05:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10569 transitions. [2020-12-22 10:05:39,987 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10569 transitions. Word has length 79 [2020-12-22 10:05:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:39,987 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10569 transitions. [2020-12-22 10:05:39,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:05:39,988 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10569 transitions. [2020-12-22 10:05:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:05:39,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:39,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:39,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:05:39,990 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:39,990 INFO L82 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2020-12-22 10:05:39,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:39,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614232880] [2020-12-22 10:05:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:40,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614232880] [2020-12-22 10:05:40,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:40,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:05:40,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638524276] [2020-12-22 10:05:40,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:05:40,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:40,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:05:40,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:05:40,145 INFO L87 Difference]: Start difference. First operand 6769 states and 10569 transitions. Second operand 6 states. [2020-12-22 10:05:40,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:40,676 INFO L93 Difference]: Finished difference Result 11987 states and 18314 transitions. [2020-12-22 10:05:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:05:40,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 10:05:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:40,693 INFO L225 Difference]: With dead ends: 11987 [2020-12-22 10:05:40,693 INFO L226 Difference]: Without dead ends: 6769 [2020-12-22 10:05:40,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:05:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2020-12-22 10:05:41,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 6769. [2020-12-22 10:05:41,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:05:41,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10505 transitions. [2020-12-22 10:05:41,076 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10505 transitions. Word has length 80 [2020-12-22 10:05:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:41,076 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10505 transitions. [2020-12-22 10:05:41,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:05:41,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10505 transitions. [2020-12-22 10:05:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:05:41,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:41,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:41,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:05:41,078 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:41,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:41,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2020-12-22 10:05:41,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:41,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315311820] [2020-12-22 10:05:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:41,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315311820] [2020-12-22 10:05:41,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:41,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:05:41,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992690465] [2020-12-22 10:05:41,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:05:41,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:41,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:05:41,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:05:41,201 INFO L87 Difference]: Start difference. First operand 6769 states and 10505 transitions. Second operand 8 states. [2020-12-22 10:05:42,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:42,069 INFO L93 Difference]: Finished difference Result 10675 states and 16148 transitions. [2020-12-22 10:05:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:05:42,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 10:05:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:42,091 INFO L225 Difference]: With dead ends: 10675 [2020-12-22 10:05:42,091 INFO L226 Difference]: Without dead ends: 10673 [2020-12-22 10:05:42,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:05:42,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10673 states. [2020-12-22 10:05:42,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10673 to 6961. [2020-12-22 10:05:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6961 states. [2020-12-22 10:05:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6961 states to 6961 states and 10665 transitions. [2020-12-22 10:05:42,558 INFO L78 Accepts]: Start accepts. Automaton has 6961 states and 10665 transitions. Word has length 80 [2020-12-22 10:05:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:42,559 INFO L481 AbstractCegarLoop]: Abstraction has 6961 states and 10665 transitions. [2020-12-22 10:05:42,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:05:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6961 states and 10665 transitions. [2020-12-22 10:05:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 10:05:42,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:42,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:42,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:05:42,561 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:42,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:42,561 INFO L82 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2020-12-22 10:05:42,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:42,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140556003] [2020-12-22 10:05:42,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:42,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140556003] [2020-12-22 10:05:42,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:42,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:05:42,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945118292] [2020-12-22 10:05:42,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:42,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:42,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:42,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:42,635 INFO L87 Difference]: Start difference. First operand 6961 states and 10665 transitions. Second operand 3 states. [2020-12-22 10:05:43,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:43,235 INFO L93 Difference]: Finished difference Result 12472 states and 18735 transitions. [2020-12-22 10:05:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:43,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 10:05:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:43,268 INFO L225 Difference]: With dead ends: 12472 [2020-12-22 10:05:43,269 INFO L226 Difference]: Without dead ends: 9461 [2020-12-22 10:05:43,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:43,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2020-12-22 10:05:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9459. [2020-12-22 10:05:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9459 states. [2020-12-22 10:05:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 14219 transitions. [2020-12-22 10:05:43,971 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 14219 transitions. Word has length 81 [2020-12-22 10:05:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:43,971 INFO L481 AbstractCegarLoop]: Abstraction has 9459 states and 14219 transitions. [2020-12-22 10:05:43,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 14219 transitions. [2020-12-22 10:05:43,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 10:05:43,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:43,973 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:43,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:05:43,974 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:43,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:43,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1821746494, now seen corresponding path program 1 times [2020-12-22 10:05:43,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:43,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687668922] [2020-12-22 10:05:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:44,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687668922] [2020-12-22 10:05:44,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:44,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:05:44,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945411089] [2020-12-22 10:05:44,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:44,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:44,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:44,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:44,040 INFO L87 Difference]: Start difference. First operand 9459 states and 14219 transitions. Second operand 3 states. [2020-12-22 10:05:49,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:49,936 INFO L93 Difference]: Finished difference Result 11714 states and 18334 transitions. [2020-12-22 10:05:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:49,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 10:05:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:49,960 INFO L225 Difference]: With dead ends: 11714 [2020-12-22 10:05:49,960 INFO L226 Difference]: Without dead ends: 10210 [2020-12-22 10:05:49,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:49,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2020-12-22 10:05:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 10210. [2020-12-22 10:05:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10210 states. [2020-12-22 10:05:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10210 states to 10210 states and 14694 transitions. [2020-12-22 10:05:50,626 INFO L78 Accepts]: Start accepts. Automaton has 10210 states and 14694 transitions. Word has length 85 [2020-12-22 10:05:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:50,627 INFO L481 AbstractCegarLoop]: Abstraction has 10210 states and 14694 transitions. [2020-12-22 10:05:50,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states and 14694 transitions. [2020-12-22 10:05:50,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 10:05:50,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:50,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:50,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:05:50,629 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:50,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:50,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1329410653, now seen corresponding path program 1 times [2020-12-22 10:05:50,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:50,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677720696] [2020-12-22 10:05:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:50,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677720696] [2020-12-22 10:05:50,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:50,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:05:50,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377901006] [2020-12-22 10:05:50,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:50,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:50,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:50,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:50,698 INFO L87 Difference]: Start difference. First operand 10210 states and 14694 transitions. Second operand 3 states. [2020-12-22 10:05:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:57,748 INFO L93 Difference]: Finished difference Result 14718 states and 21195 transitions. [2020-12-22 10:05:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:57,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 10:05:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:57,768 INFO L225 Difference]: With dead ends: 14718 [2020-12-22 10:05:57,769 INFO L226 Difference]: Without dead ends: 12463 [2020-12-22 10:05:57,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:57,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12463 states. [2020-12-22 10:05:58,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12463 to 12463. [2020-12-22 10:05:58,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12463 states. [2020-12-22 10:05:58,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12463 states to 12463 states and 17625 transitions. [2020-12-22 10:05:58,351 INFO L78 Accepts]: Start accepts. Automaton has 12463 states and 17625 transitions. Word has length 87 [2020-12-22 10:05:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:58,351 INFO L481 AbstractCegarLoop]: Abstraction has 12463 states and 17625 transitions. [2020-12-22 10:05:58,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 12463 states and 17625 transitions. [2020-12-22 10:05:58,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:05:58,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:58,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:58,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:05:58,354 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:58,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:58,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2015891154, now seen corresponding path program 1 times [2020-12-22 10:05:58,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:58,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445788662] [2020-12-22 10:05:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:58,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445788662] [2020-12-22 10:05:58,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:58,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:05:58,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576607357] [2020-12-22 10:05:58,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:05:58,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:58,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:05:58,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:05:58,475 INFO L87 Difference]: Start difference. First operand 12463 states and 17625 transitions. Second operand 4 states. [2020-12-22 10:06:08,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:08,539 INFO L93 Difference]: Finished difference Result 17722 states and 24714 transitions. [2020-12-22 10:06:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:06:08,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-12-22 10:06:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:08,557 INFO L225 Difference]: With dead ends: 17722 [2020-12-22 10:06:08,558 INFO L226 Difference]: Without dead ends: 13214 [2020-12-22 10:06:08,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:06:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13214 states. [2020-12-22 10:06:09,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13214 to 13214. [2020-12-22 10:06:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13214 states. [2020-12-22 10:06:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13214 states to 13214 states and 18268 transitions. [2020-12-22 10:06:09,162 INFO L78 Accepts]: Start accepts. Automaton has 13214 states and 18268 transitions. Word has length 93 [2020-12-22 10:06:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:09,163 INFO L481 AbstractCegarLoop]: Abstraction has 13214 states and 18268 transitions. [2020-12-22 10:06:09,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:06:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 13214 states and 18268 transitions. [2020-12-22 10:06:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:06:09,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:09,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:09,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:06:09,169 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:09,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:09,170 INFO L82 PathProgramCache]: Analyzing trace with hash 651816077, now seen corresponding path program 1 times [2020-12-22 10:06:09,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:09,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132392152] [2020-12-22 10:06:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:06:09,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132392152] [2020-12-22 10:06:09,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:09,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:06:09,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359708788] [2020-12-22 10:06:09,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:06:09,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:09,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:06:09,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:06:09,316 INFO L87 Difference]: Start difference. First operand 13214 states and 18268 transitions. Second operand 8 states. [2020-12-22 10:06:12,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:12,056 INFO L93 Difference]: Finished difference Result 62220 states and 88803 transitions. [2020-12-22 10:06:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:06:12,057 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:06:12,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:12,114 INFO L225 Difference]: With dead ends: 62220 [2020-12-22 10:06:12,114 INFO L226 Difference]: Without dead ends: 54314 [2020-12-22 10:06:12,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:06:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54314 states. [2020-12-22 10:06:13,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54314 to 21118. [2020-12-22 10:06:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21118 states. [2020-12-22 10:06:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21118 states to 21118 states and 29564 transitions. [2020-12-22 10:06:13,710 INFO L78 Accepts]: Start accepts. Automaton has 21118 states and 29564 transitions. Word has length 111 [2020-12-22 10:06:13,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:13,710 INFO L481 AbstractCegarLoop]: Abstraction has 21118 states and 29564 transitions. [2020-12-22 10:06:13,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:06:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand 21118 states and 29564 transitions. [2020-12-22 10:06:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:06:13,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:13,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:13,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:06:13,717 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:13,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1116966739, now seen corresponding path program 1 times [2020-12-22 10:06:13,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:13,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592180099] [2020-12-22 10:06:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:06:13,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592180099] [2020-12-22 10:06:13,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:13,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:06:13,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209641924] [2020-12-22 10:06:13,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:06:13,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:13,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:06:13,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:06:13,905 INFO L87 Difference]: Start difference. First operand 21118 states and 29564 transitions. Second operand 8 states. [2020-12-22 10:06:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:17,597 INFO L93 Difference]: Finished difference Result 70124 states and 100099 transitions. [2020-12-22 10:06:17,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:06:17,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:06:17,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:17,674 INFO L225 Difference]: With dead ends: 70124 [2020-12-22 10:06:17,674 INFO L226 Difference]: Without dead ends: 62218 [2020-12-22 10:06:17,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:06:17,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62218 states. [2020-12-22 10:06:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62218 to 32990. [2020-12-22 10:06:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32990 states. [2020-12-22 10:06:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32990 states to 32990 states and 46428 transitions. [2020-12-22 10:06:20,005 INFO L78 Accepts]: Start accepts. Automaton has 32990 states and 46428 transitions. Word has length 111 [2020-12-22 10:06:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:20,005 INFO L481 AbstractCegarLoop]: Abstraction has 32990 states and 46428 transitions. [2020-12-22 10:06:20,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:06:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 32990 states and 46428 transitions. [2020-12-22 10:06:20,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:06:20,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:20,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:20,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:06:20,014 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:20,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:20,015 INFO L82 PathProgramCache]: Analyzing trace with hash 14673101, now seen corresponding path program 1 times [2020-12-22 10:06:20,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:20,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793436402] [2020-12-22 10:06:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:06:20,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793436402] [2020-12-22 10:06:20,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:20,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:06:20,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210924311] [2020-12-22 10:06:20,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:06:20,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:20,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:06:20,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:06:20,163 INFO L87 Difference]: Start difference. First operand 32990 states and 46428 transitions. Second operand 8 states. [2020-12-22 10:06:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:24,687 INFO L93 Difference]: Finished difference Result 78028 states and 111395 transitions. [2020-12-22 10:06:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:06:24,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:06:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:24,761 INFO L225 Difference]: With dead ends: 78028 [2020-12-22 10:06:24,761 INFO L226 Difference]: Without dead ends: 70122 [2020-12-22 10:06:24,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:06:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70122 states. [2020-12-22 10:06:27,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70122 to 40894. [2020-12-22 10:06:27,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40894 states. [2020-12-22 10:06:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40894 states to 40894 states and 57724 transitions. [2020-12-22 10:06:27,866 INFO L78 Accepts]: Start accepts. Automaton has 40894 states and 57724 transitions. Word has length 111 [2020-12-22 10:06:27,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:27,866 INFO L481 AbstractCegarLoop]: Abstraction has 40894 states and 57724 transitions. [2020-12-22 10:06:27,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:06:27,867 INFO L276 IsEmpty]: Start isEmpty. Operand 40894 states and 57724 transitions. [2020-12-22 10:06:27,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:06:27,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:27,875 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:27,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:06:27,876 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:27,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:27,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1220785939, now seen corresponding path program 1 times [2020-12-22 10:06:27,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:27,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45002117] [2020-12-22 10:06:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 10:06:28,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45002117] [2020-12-22 10:06:28,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:28,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:06:28,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27434929] [2020-12-22 10:06:28,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:06:28,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:28,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:06:28,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:06:28,217 INFO L87 Difference]: Start difference. First operand 40894 states and 57724 transitions. Second operand 8 states. [2020-12-22 10:06:33,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:33,879 INFO L93 Difference]: Finished difference Result 85932 states and 122691 transitions. [2020-12-22 10:06:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:06:33,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:06:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:33,969 INFO L225 Difference]: With dead ends: 85932 [2020-12-22 10:06:33,969 INFO L226 Difference]: Without dead ends: 78026 [2020-12-22 10:06:33,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:06:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78026 states. [2020-12-22 10:06:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78026 to 48798. [2020-12-22 10:06:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48798 states. [2020-12-22 10:06:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48798 states to 48798 states and 69020 transitions. [2020-12-22 10:06:38,038 INFO L78 Accepts]: Start accepts. Automaton has 48798 states and 69020 transitions. Word has length 111 [2020-12-22 10:06:38,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:38,039 INFO L481 AbstractCegarLoop]: Abstraction has 48798 states and 69020 transitions. [2020-12-22 10:06:38,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:06:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 48798 states and 69020 transitions. [2020-12-22 10:06:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:06:38,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:38,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:38,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:06:38,165 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:38,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1653185805, now seen corresponding path program 1 times [2020-12-22 10:06:38,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:38,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367171810] [2020-12-22 10:06:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:06:38,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367171810] [2020-12-22 10:06:38,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:38,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:06:38,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351012092] [2020-12-22 10:06:38,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:06:38,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:38,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:06:38,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:06:38,340 INFO L87 Difference]: Start difference. First operand 48798 states and 69020 transitions. Second operand 8 states. [2020-12-22 10:06:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:45,129 INFO L93 Difference]: Finished difference Result 93836 states and 133987 transitions. [2020-12-22 10:06:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:06:45,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:06:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:45,215 INFO L225 Difference]: With dead ends: 93836 [2020-12-22 10:06:45,216 INFO L226 Difference]: Without dead ends: 85930 [2020-12-22 10:06:45,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:06:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85930 states. [2020-12-22 10:06:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85930 to 56702. [2020-12-22 10:06:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56702 states. [2020-12-22 10:06:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56702 states to 56702 states and 80316 transitions. [2020-12-22 10:06:50,157 INFO L78 Accepts]: Start accepts. Automaton has 56702 states and 80316 transitions. Word has length 111 [2020-12-22 10:06:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:50,157 INFO L481 AbstractCegarLoop]: Abstraction has 56702 states and 80316 transitions. [2020-12-22 10:06:50,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:06:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 56702 states and 80316 transitions. [2020-12-22 10:06:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:06:50,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:50,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:50,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:06:50,167 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:50,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:50,168 INFO L82 PathProgramCache]: Analyzing trace with hash -2019174363, now seen corresponding path program 1 times [2020-12-22 10:06:50,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:50,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680359467] [2020-12-22 10:06:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:50,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680359467] [2020-12-22 10:06:50,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:50,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:50,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750885789] [2020-12-22 10:06:50,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:50,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:50,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:50,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:50,375 INFO L87 Difference]: Start difference. First operand 56702 states and 80316 transitions. Second operand 3 states. [2020-12-22 10:06:53,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:53,419 INFO L93 Difference]: Finished difference Result 92515 states and 131941 transitions. [2020-12-22 10:06:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:53,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:06:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:53,459 INFO L225 Difference]: With dead ends: 92515 [2020-12-22 10:06:53,459 INFO L226 Difference]: Without dead ends: 41121 [2020-12-22 10:06:53,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:53,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41121 states. [2020-12-22 10:06:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41121 to 41119. [2020-12-22 10:06:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41119 states. [2020-12-22 10:06:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41119 states to 41119 states and 58082 transitions. [2020-12-22 10:06:56,759 INFO L78 Accepts]: Start accepts. Automaton has 41119 states and 58082 transitions. Word has length 113 [2020-12-22 10:06:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:56,759 INFO L481 AbstractCegarLoop]: Abstraction has 41119 states and 58082 transitions. [2020-12-22 10:06:56,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 41119 states and 58082 transitions. [2020-12-22 10:06:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:06:56,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:56,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:56,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 10:06:56,766 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:56,766 INFO L82 PathProgramCache]: Analyzing trace with hash -21629902, now seen corresponding path program 1 times [2020-12-22 10:06:56,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:56,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679155108] [2020-12-22 10:06:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:06:56,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679155108] [2020-12-22 10:06:56,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:56,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:06:56,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009364026] [2020-12-22 10:06:56,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:06:56,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:56,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:06:56,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:06:56,923 INFO L87 Difference]: Start difference. First operand 41119 states and 58082 transitions. Second operand 8 states. [2020-12-22 10:07:02,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:02,809 INFO L93 Difference]: Finished difference Result 74157 states and 105705 transitions. [2020-12-22 10:07:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:02,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-12-22 10:07:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:02,881 INFO L225 Difference]: With dead ends: 74157 [2020-12-22 10:07:02,882 INFO L226 Difference]: Without dead ends: 68651 [2020-12-22 10:07:02,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68651 states. [2020-12-22 10:07:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68651 to 46623. [2020-12-22 10:07:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46623 states. [2020-12-22 10:07:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46623 states to 46623 states and 65954 transitions. [2020-12-22 10:07:07,072 INFO L78 Accepts]: Start accepts. Automaton has 46623 states and 65954 transitions. Word has length 113 [2020-12-22 10:07:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:07,073 INFO L481 AbstractCegarLoop]: Abstraction has 46623 states and 65954 transitions. [2020-12-22 10:07:07,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 46623 states and 65954 transitions. [2020-12-22 10:07:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:07:07,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:07,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:07,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 10:07:07,079 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:07,080 INFO L82 PathProgramCache]: Analyzing trace with hash 254785081, now seen corresponding path program 1 times [2020-12-22 10:07:07,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:07,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967129711] [2020-12-22 10:07:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:07,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967129711] [2020-12-22 10:07:07,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581224486] [2020-12-22 10:07:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 10:07:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:07,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 10:07:07,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:07:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:07:08,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:07:08,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 16 [2020-12-22 10:07:08,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227963338] [2020-12-22 10:07:08,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 10:07:08,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:08,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 10:07:08,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:07:08,134 INFO L87 Difference]: Start difference. First operand 46623 states and 65954 transitions. Second operand 16 states. [2020-12-22 10:07:09,183 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:07:09,766 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 10:07:13,969 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:07:14,203 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 10:07:22,128 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-12-22 10:07:22,328 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-12-22 10:07:23,361 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 10:07:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:40,541 INFO L93 Difference]: Finished difference Result 312564 states and 440189 transitions. [2020-12-22 10:07:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-22 10:07:40,541 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 114 [2020-12-22 10:07:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:41,269 INFO L225 Difference]: With dead ends: 312564 [2020-12-22 10:07:41,269 INFO L226 Difference]: Without dead ends: 271282 [2020-12-22 10:07:41,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1154, Invalid=5008, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 10:07:41,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271282 states. [2020-12-22 10:07:57,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271282 to 138316. [2020-12-22 10:07:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138316 states. [2020-12-22 10:07:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138316 states to 138316 states and 192192 transitions. [2020-12-22 10:07:57,944 INFO L78 Accepts]: Start accepts. Automaton has 138316 states and 192192 transitions. Word has length 114 [2020-12-22 10:07:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:57,944 INFO L481 AbstractCegarLoop]: Abstraction has 138316 states and 192192 transitions. [2020-12-22 10:07:57,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 10:07:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 138316 states and 192192 transitions. [2020-12-22 10:07:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 10:07:57,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:57,967 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:58,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 10:07:58,183 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:58,184 INFO L82 PathProgramCache]: Analyzing trace with hash -725866966, now seen corresponding path program 1 times [2020-12-22 10:07:58,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:58,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518255306] [2020-12-22 10:07:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:58,515 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-12-22 10:07:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:58,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518255306] [2020-12-22 10:07:58,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900192881] [2020-12-22 10:07:58,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 10:07:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:58,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 10:07:58,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:07:59,156 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 10:07:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:59,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:07:59,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 10:07:59,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799979012] [2020-12-22 10:07:59,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 10:07:59,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:59,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 10:07:59,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 10:07:59,591 INFO L87 Difference]: Start difference. First operand 138316 states and 192192 transitions. Second operand 22 states. [2020-12-22 10:07:59,913 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:08:00,287 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:08:00,425 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:08:00,896 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-12-22 10:08:02,585 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:08:02,932 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:08:03,256 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:08:04,026 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:08:04,244 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:08:04,584 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 10:08:04,896 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:08:06,942 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:08:07,128 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:08,079 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:08,370 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:09,380 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:09,717 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:08:09,865 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:08:10,032 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:08:10,730 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:11,364 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:08:12,524 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:08:12,932 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:08:13,609 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:08:14,483 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:08:14,995 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:15,261 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:08:15,524 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:08:16,100 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:16,773 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:08:17,783 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:08:17,932 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:08:18,117 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:08:19,634 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:08:20,948 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:21,441 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:22,201 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:22,748 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:08:23,422 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:31,252 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:08:31,395 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:31,614 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:08:31,769 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:31,990 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:08:32,184 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:08:32,442 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:08:32,775 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:08:32,942 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:08:33,183 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-22 10:08:33,415 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-12-22 10:08:33,787 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 10:08:33,965 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:34,197 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:08:34,383 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:34,617 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:08:34,844 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:08:35,132 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-22 10:08:35,274 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:35,478 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:08:35,649 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:08:35,902 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:08:36,137 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:08:36,855 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:08:37,189 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:08:37,366 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:08:37,667 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:08:37,828 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:08:38,393 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-22 10:08:38,665 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:38,967 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:39,321 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-12-22 10:08:39,481 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:39,693 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:08:40,013 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:08:40,149 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:40,322 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:08:56,523 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 10:08:56,877 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:08:57,066 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:57,479 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:08:57,644 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:57,871 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:08:58,103 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:08:59,237 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:08:59,559 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:08:59,747 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:59,900 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:09:00,148 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:00,360 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:09:00,807 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:01,677 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:09:01,850 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:02,005 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 10:09:02,219 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:09:03,647 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 10:09:03,894 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:09:04,258 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:09:04,936 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:05,275 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:05,964 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45