/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.5.ufo.UNBOUNDED.pals+Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:57:28,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:57:28,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:57:28,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:57:28,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:57:28,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:57:28,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:57:28,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:57:28,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:57:28,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:57:28,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:57:28,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:57:28,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:57:28,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:57:28,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:57:28,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:57:28,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:57:28,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:57:28,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:57:28,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:57:28,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:57:28,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:57:28,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:57:28,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:57:28,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:57:28,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:57:28,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:57:28,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:57:28,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:57:28,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:57:28,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:57:28,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:57:28,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:57:28,657 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:57:28,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:57:28,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:57:28,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:57:28,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:57:28,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:57:28,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:57:28,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:57:28,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:57:28,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:57:28,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:57:28,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:57:28,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:57:28,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:57:28,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:57:28,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:57:28,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:57:28,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:57:28,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:57:28,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:57:28,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:57:28,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:57:29,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:57:29,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:57:29,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:57:29,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:57:29,104 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:57:29,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label06.c [2020-12-22 09:57:29,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18236fe6a/fb4dc974e0244d86a157dfef9e0bff50/FLAGecd80bef1 [2020-12-22 09:57:30,376 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:57:30,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label06.c [2020-12-22 09:57:30,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18236fe6a/fb4dc974e0244d86a157dfef9e0bff50/FLAGecd80bef1 [2020-12-22 09:57:30,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18236fe6a/fb4dc974e0244d86a157dfef9e0bff50 [2020-12-22 09:57:30,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:57:30,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:57:30,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:57:30,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:57:30,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:57:30,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:57:30" (1/1) ... [2020-12-22 09:57:30,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e160876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:30, skipping insertion in model container [2020-12-22 09:57:30,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:57:30" (1/1) ... [2020-12-22 09:57:30,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:57:31,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:57:31,360 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.5.ufo.UNBOUNDED.pals+Problem12_label06.c[11758,11771] [2020-12-22 09:57:31,394 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.5.ufo.UNBOUNDED.pals+Problem12_label06.c[14332,14345] [2020-12-22 09:57:32,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:57:32,531 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:57:32,605 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.5.ufo.UNBOUNDED.pals+Problem12_label06.c[11758,11771] [2020-12-22 09:57:32,670 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.5.ufo.UNBOUNDED.pals+Problem12_label06.c[14332,14345] [2020-12-22 09:57:33,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:57:33,352 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:57:33,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33 WrapperNode [2020-12-22 09:57:33,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:57:33,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:57:33,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:57:33,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:57:33,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (1/1) ... [2020-12-22 09:57:33,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (1/1) ... [2020-12-22 09:57:33,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:57:33,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:57:33,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:57:33,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:57:33,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (1/1) ... [2020-12-22 09:57:33,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (1/1) ... [2020-12-22 09:57:33,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (1/1) ... [2020-12-22 09:57:33,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (1/1) ... [2020-12-22 09:57:34,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (1/1) ... [2020-12-22 09:57:34,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (1/1) ... [2020-12-22 09:57:34,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (1/1) ... [2020-12-22 09:57:34,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:57:34,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:57:34,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:57:34,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:57:34,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (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 09:57:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:57:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:57:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:57:34,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:57:40,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:57:40,104 INFO L299 CfgBuilder]: Removed 36 assume(true) statements. [2020-12-22 09:57:40,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:57:40 BoogieIcfgContainer [2020-12-22 09:57:40,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:57:40,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:57:40,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:57:40,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:57:40,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:57:30" (1/3) ... [2020-12-22 09:57:40,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2504697d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:57:40, skipping insertion in model container [2020-12-22 09:57:40,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:57:33" (2/3) ... [2020-12-22 09:57:40,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2504697d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:57:40, skipping insertion in model container [2020-12-22 09:57:40,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:57:40" (3/3) ... [2020-12-22 09:57:40,124 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label06.c [2020-12-22 09:57:40,132 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:57:40,138 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 09:57:40,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 09:57:40,208 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:57:40,208 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:57:40,208 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:57:40,209 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:57:40,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:57:40,209 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:57:40,209 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:57:40,209 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:57:40,251 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-12-22 09:57:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 09:57:40,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:40,265 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] [2020-12-22 09:57:40,265 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:40,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:40,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1621235691, now seen corresponding path program 1 times [2020-12-22 09:57:40,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:40,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101492088] [2020-12-22 09:57:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:40,726 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 09:57:40,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101492088] [2020-12-22 09:57:40,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:40,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 09:57:40,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412190569] [2020-12-22 09:57:40,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:57:40,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:40,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:57:40,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:57:40,756 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 3 states. [2020-12-22 09:57:45,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:45,931 INFO L93 Difference]: Finished difference Result 2536 states and 4878 transitions. [2020-12-22 09:57:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:57:45,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 09:57:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:45,986 INFO L225 Difference]: With dead ends: 2536 [2020-12-22 09:57:45,986 INFO L226 Difference]: Without dead ends: 1595 [2020-12-22 09:57:46,099 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 09:57:46,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2020-12-22 09:57:46,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1595. [2020-12-22 09:57:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2020-12-22 09:57:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2498 transitions. [2020-12-22 09:57:46,262 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2498 transitions. Word has length 24 [2020-12-22 09:57:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:46,262 INFO L481 AbstractCegarLoop]: Abstraction has 1595 states and 2498 transitions. [2020-12-22 09:57:46,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:57:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2498 transitions. [2020-12-22 09:57:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 09:57:46,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:46,265 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] [2020-12-22 09:57:46,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:57:46,266 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:46,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:46,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1592898568, now seen corresponding path program 1 times [2020-12-22 09:57:46,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:46,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157883459] [2020-12-22 09:57:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:46,367 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 09:57:46,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157883459] [2020-12-22 09:57:46,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:46,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:57:46,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466590392] [2020-12-22 09:57:46,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:57:46,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:46,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:57:46,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:57:46,372 INFO L87 Difference]: Start difference. First operand 1595 states and 2498 transitions. Second operand 5 states. [2020-12-22 09:57:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:46,471 INFO L93 Difference]: Finished difference Result 1652 states and 2586 transitions. [2020-12-22 09:57:46,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:57:46,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-12-22 09:57:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:46,481 INFO L225 Difference]: With dead ends: 1652 [2020-12-22 09:57:46,482 INFO L226 Difference]: Without dead ends: 1595 [2020-12-22 09:57:46,483 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 09:57:46,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2020-12-22 09:57:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1595. [2020-12-22 09:57:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2020-12-22 09:57:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2467 transitions. [2020-12-22 09:57:46,528 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2467 transitions. Word has length 34 [2020-12-22 09:57:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:46,529 INFO L481 AbstractCegarLoop]: Abstraction has 1595 states and 2467 transitions. [2020-12-22 09:57:46,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:57:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2467 transitions. [2020-12-22 09:57:46,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:57:46,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:46,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:57:46,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:57:46,533 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:46,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1337087153, now seen corresponding path program 1 times [2020-12-22 09:57:46,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:46,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961992838] [2020-12-22 09:57:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:46,646 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 09:57:46,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961992838] [2020-12-22 09:57:46,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:46,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:57:46,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617650540] [2020-12-22 09:57:46,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:57:46,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:46,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:57:46,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:57:46,649 INFO L87 Difference]: Start difference. First operand 1595 states and 2467 transitions. Second operand 3 states. [2020-12-22 09:57:46,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:46,696 INFO L93 Difference]: Finished difference Result 1695 states and 2625 transitions. [2020-12-22 09:57:46,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:57:46,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 09:57:46,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:46,706 INFO L225 Difference]: With dead ends: 1695 [2020-12-22 09:57:46,707 INFO L226 Difference]: Without dead ends: 1642 [2020-12-22 09:57:46,708 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 09:57:46,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-12-22 09:57:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1640. [2020-12-22 09:57:46,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1640 states. [2020-12-22 09:57:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2539 transitions. [2020-12-22 09:57:46,757 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2539 transitions. Word has length 64 [2020-12-22 09:57:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:46,758 INFO L481 AbstractCegarLoop]: Abstraction has 1640 states and 2539 transitions. [2020-12-22 09:57:46,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:57:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2539 transitions. [2020-12-22 09:57:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:57:46,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:46,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:57:46,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:57:46,762 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:46,762 INFO L82 PathProgramCache]: Analyzing trace with hash -119101755, now seen corresponding path program 1 times [2020-12-22 09:57:46,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:46,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489599048] [2020-12-22 09:57:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:57:46,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489599048] [2020-12-22 09:57:46,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:46,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:57:46,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753937423] [2020-12-22 09:57:46,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:57:46,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:46,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:57:46,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:57:46,946 INFO L87 Difference]: Start difference. First operand 1640 states and 2539 transitions. Second operand 7 states. [2020-12-22 09:57:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:47,224 INFO L93 Difference]: Finished difference Result 2620 states and 4099 transitions. [2020-12-22 09:57:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 09:57:47,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-12-22 09:57:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:47,239 INFO L225 Difference]: With dead ends: 2620 [2020-12-22 09:57:47,240 INFO L226 Difference]: Without dead ends: 2522 [2020-12-22 09:57:47,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-22 09:57:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2020-12-22 09:57:47,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 1736. [2020-12-22 09:57:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-12-22 09:57:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2690 transitions. [2020-12-22 09:57:47,310 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2690 transitions. Word has length 64 [2020-12-22 09:57:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:47,311 INFO L481 AbstractCegarLoop]: Abstraction has 1736 states and 2690 transitions. [2020-12-22 09:57:47,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:57:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2690 transitions. [2020-12-22 09:57:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:57:47,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:47,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:57:47,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:57:47,314 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:47,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:47,314 INFO L82 PathProgramCache]: Analyzing trace with hash 91634997, now seen corresponding path program 1 times [2020-12-22 09:57:47,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:47,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608924933] [2020-12-22 09:57:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:47,409 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 09:57:47,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608924933] [2020-12-22 09:57:47,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:47,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:57:47,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231763980] [2020-12-22 09:57:47,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:57:47,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:47,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:57:47,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:57:47,413 INFO L87 Difference]: Start difference. First operand 1736 states and 2690 transitions. Second operand 3 states. [2020-12-22 09:57:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:47,480 INFO L93 Difference]: Finished difference Result 2102 states and 3266 transitions. [2020-12-22 09:57:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:57:47,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 09:57:47,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:47,492 INFO L225 Difference]: With dead ends: 2102 [2020-12-22 09:57:47,492 INFO L226 Difference]: Without dead ends: 1908 [2020-12-22 09:57:47,494 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 09:57:47,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-12-22 09:57:47,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1902. [2020-12-22 09:57:47,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-12-22 09:57:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2944 transitions. [2020-12-22 09:57:47,570 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2944 transitions. Word has length 66 [2020-12-22 09:57:47,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:47,572 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 2944 transitions. [2020-12-22 09:57:47,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:57:47,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2944 transitions. [2020-12-22 09:57:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:57:47,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:47,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:57:47,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:57:47,576 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:47,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:47,576 INFO L82 PathProgramCache]: Analyzing trace with hash 158128509, now seen corresponding path program 1 times [2020-12-22 09:57:47,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:47,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095867155] [2020-12-22 09:57:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:47,882 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 09:57:47,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095867155] [2020-12-22 09:57:47,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:47,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:57:47,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185817901] [2020-12-22 09:57:47,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:57:47,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:47,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:57:47,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:57:47,887 INFO L87 Difference]: Start difference. First operand 1902 states and 2944 transitions. Second operand 7 states. [2020-12-22 09:57:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:48,139 INFO L93 Difference]: Finished difference Result 2264 states and 3506 transitions. [2020-12-22 09:57:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:57:48,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-12-22 09:57:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:48,152 INFO L225 Difference]: With dead ends: 2264 [2020-12-22 09:57:48,152 INFO L226 Difference]: Without dead ends: 1904 [2020-12-22 09:57:48,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-22 09:57:48,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-12-22 09:57:48,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1902. [2020-12-22 09:57:48,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-12-22 09:57:48,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2940 transitions. [2020-12-22 09:57:48,223 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2940 transitions. Word has length 66 [2020-12-22 09:57:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:48,225 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 2940 transitions. [2020-12-22 09:57:48,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:57:48,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2940 transitions. [2020-12-22 09:57:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:57:48,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:48,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:57:48,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:57:48,228 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:48,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:48,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1100417095, now seen corresponding path program 1 times [2020-12-22 09:57:48,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:48,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212891166] [2020-12-22 09:57:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:48,333 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 09:57:48,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212891166] [2020-12-22 09:57:48,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:48,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:57:48,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361396867] [2020-12-22 09:57:48,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:57:48,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:48,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:57:48,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:57:48,338 INFO L87 Difference]: Start difference. First operand 1902 states and 2940 transitions. Second operand 3 states. [2020-12-22 09:57:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:48,485 INFO L93 Difference]: Finished difference Result 2574 states and 3974 transitions. [2020-12-22 09:57:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:57:48,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 09:57:48,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:48,497 INFO L225 Difference]: With dead ends: 2574 [2020-12-22 09:57:48,498 INFO L226 Difference]: Without dead ends: 2214 [2020-12-22 09:57:48,499 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 09:57:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2020-12-22 09:57:48,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2212. [2020-12-22 09:57:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2020-12-22 09:57:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3408 transitions. [2020-12-22 09:57:48,579 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3408 transitions. Word has length 66 [2020-12-22 09:57:48,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:48,580 INFO L481 AbstractCegarLoop]: Abstraction has 2212 states and 3408 transitions. [2020-12-22 09:57:48,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:57:48,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3408 transitions. [2020-12-22 09:57:48,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:57:48,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:48,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:57:48,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:57:48,581 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:48,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:48,582 INFO L82 PathProgramCache]: Analyzing trace with hash -826729383, now seen corresponding path program 1 times [2020-12-22 09:57:48,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:48,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797936076] [2020-12-22 09:57:48,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:48,642 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 09:57:48,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797936076] [2020-12-22 09:57:48,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:48,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:57:48,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937302526] [2020-12-22 09:57:48,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:57:48,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:48,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:57:48,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:57:48,645 INFO L87 Difference]: Start difference. First operand 2212 states and 3408 transitions. Second operand 3 states. [2020-12-22 09:57:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:48,738 INFO L93 Difference]: Finished difference Result 3456 states and 5298 transitions. [2020-12-22 09:57:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:57:48,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 09:57:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:48,753 INFO L225 Difference]: With dead ends: 3456 [2020-12-22 09:57:48,754 INFO L226 Difference]: Without dead ends: 2786 [2020-12-22 09:57:48,756 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 09:57:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-12-22 09:57:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2784. [2020-12-22 09:57:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2784 states. [2020-12-22 09:57:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4256 transitions. [2020-12-22 09:57:48,882 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4256 transitions. Word has length 66 [2020-12-22 09:57:48,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:48,883 INFO L481 AbstractCegarLoop]: Abstraction has 2784 states and 4256 transitions. [2020-12-22 09:57:48,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:57:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4256 transitions. [2020-12-22 09:57:48,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:57:48,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:48,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:57:48,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:57:48,884 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:48,885 INFO L82 PathProgramCache]: Analyzing trace with hash 992342265, now seen corresponding path program 1 times [2020-12-22 09:57:48,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:48,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131124008] [2020-12-22 09:57:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:48,951 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 09:57:48,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131124008] [2020-12-22 09:57:48,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:48,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:57:48,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123243842] [2020-12-22 09:57:48,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:57:48,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:48,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:57:48,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:57:48,955 INFO L87 Difference]: Start difference. First operand 2784 states and 4256 transitions. Second operand 3 states. [2020-12-22 09:57:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:49,114 INFO L93 Difference]: Finished difference Result 5076 states and 7682 transitions. [2020-12-22 09:57:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:57:49,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 09:57:49,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:49,135 INFO L225 Difference]: With dead ends: 5076 [2020-12-22 09:57:49,136 INFO L226 Difference]: Without dead ends: 3834 [2020-12-22 09:57:49,139 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 09:57:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2020-12-22 09:57:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3832. [2020-12-22 09:57:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3832 states. [2020-12-22 09:57:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 5776 transitions. [2020-12-22 09:57:49,334 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 5776 transitions. Word has length 66 [2020-12-22 09:57:49,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:49,334 INFO L481 AbstractCegarLoop]: Abstraction has 3832 states and 5776 transitions. [2020-12-22 09:57:49,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:57:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 5776 transitions. [2020-12-22 09:57:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:57:49,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:49,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:57:49,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:57:49,343 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:49,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:49,343 INFO L82 PathProgramCache]: Analyzing trace with hash 192293446, now seen corresponding path program 1 times [2020-12-22 09:57:49,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:49,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458039617] [2020-12-22 09:57:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:49,442 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 09:57:49,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458039617] [2020-12-22 09:57:49,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:49,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:57:49,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611198018] [2020-12-22 09:57:49,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:57:49,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:49,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:57:49,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:57:49,448 INFO L87 Difference]: Start difference. First operand 3832 states and 5776 transitions. Second operand 5 states. [2020-12-22 09:57:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:49,751 INFO L93 Difference]: Finished difference Result 5558 states and 8278 transitions. [2020-12-22 09:57:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:57:49,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 09:57:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:49,799 INFO L225 Difference]: With dead ends: 5558 [2020-12-22 09:57:49,800 INFO L226 Difference]: Without dead ends: 5556 [2020-12-22 09:57:49,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:57:49,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2020-12-22 09:57:50,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 3928. [2020-12-22 09:57:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3928 states. [2020-12-22 09:57:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 5856 transitions. [2020-12-22 09:57:50,073 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 5856 transitions. Word has length 67 [2020-12-22 09:57:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:50,073 INFO L481 AbstractCegarLoop]: Abstraction has 3928 states and 5856 transitions. [2020-12-22 09:57:50,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:57:50,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 5856 transitions. [2020-12-22 09:57:50,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 09:57:50,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:50,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:57:50,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:57:50,075 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:50,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:50,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1338319212, now seen corresponding path program 1 times [2020-12-22 09:57:50,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:50,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158051701] [2020-12-22 09:57:50,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:50,136 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 09:57:50,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158051701] [2020-12-22 09:57:50,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:50,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:57:50,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016810715] [2020-12-22 09:57:50,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:57:50,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:50,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:57:50,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:57:50,140 INFO L87 Difference]: Start difference. First operand 3928 states and 5856 transitions. Second operand 3 states. [2020-12-22 09:57:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:50,393 INFO L93 Difference]: Finished difference Result 6367 states and 9446 transitions. [2020-12-22 09:57:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:57:50,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 09:57:50,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:50,406 INFO L225 Difference]: With dead ends: 6367 [2020-12-22 09:57:50,406 INFO L226 Difference]: Without dead ends: 5020 [2020-12-22 09:57:50,410 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 09:57:50,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2020-12-22 09:57:50,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 5018. [2020-12-22 09:57:50,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5018 states. [2020-12-22 09:57:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 7410 transitions. [2020-12-22 09:57:50,834 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 7410 transitions. Word has length 68 [2020-12-22 09:57:50,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:50,835 INFO L481 AbstractCegarLoop]: Abstraction has 5018 states and 7410 transitions. [2020-12-22 09:57:50,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:57:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 7410 transitions. [2020-12-22 09:57:50,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 09:57:50,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:50,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2020-12-22 09:57:50,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:57:50,840 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:50,840 INFO L82 PathProgramCache]: Analyzing trace with hash 320828100, now seen corresponding path program 1 times [2020-12-22 09:57:50,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:50,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382646569] [2020-12-22 09:57:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 09:57:50,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382646569] [2020-12-22 09:57:50,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:50,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:57:50,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452484444] [2020-12-22 09:57:50,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:57:50,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:50,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:57:50,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:57:50,991 INFO L87 Difference]: Start difference. First operand 5018 states and 7410 transitions. Second operand 7 states. [2020-12-22 09:57:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:52,253 INFO L93 Difference]: Finished difference Result 23094 states and 33512 transitions. [2020-12-22 09:57:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:57:52,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 09:57:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:52,298 INFO L225 Difference]: With dead ends: 23094 [2020-12-22 09:57:52,298 INFO L226 Difference]: Without dead ends: 19620 [2020-12-22 09:57:52,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:57:52,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19620 states. [2020-12-22 09:57:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19620 to 8490. [2020-12-22 09:57:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8490 states. [2020-12-22 09:57:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8490 states to 8490 states and 12386 transitions. [2020-12-22 09:57:53,073 INFO L78 Accepts]: Start accepts. Automaton has 8490 states and 12386 transitions. Word has length 94 [2020-12-22 09:57:53,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:53,073 INFO L481 AbstractCegarLoop]: Abstraction has 8490 states and 12386 transitions. [2020-12-22 09:57:53,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:57:53,074 INFO L276 IsEmpty]: Start isEmpty. Operand 8490 states and 12386 transitions. [2020-12-22 09:57:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 09:57:53,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:53,078 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-12-22 09:57:53,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:57:53,079 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:53,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:53,079 INFO L82 PathProgramCache]: Analyzing trace with hash 350350318, now seen corresponding path program 1 times [2020-12-22 09:57:53,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:53,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15517331] [2020-12-22 09:57:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 09:57:53,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15517331] [2020-12-22 09:57:53,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:53,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:57:53,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399736544] [2020-12-22 09:57:53,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:57:53,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:53,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:57:53,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:57:53,190 INFO L87 Difference]: Start difference. First operand 8490 states and 12386 transitions. Second operand 7 states. [2020-12-22 09:57:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:54,697 INFO L93 Difference]: Finished difference Result 26566 states and 38488 transitions. [2020-12-22 09:57:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:57:54,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 09:57:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:54,752 INFO L225 Difference]: With dead ends: 26566 [2020-12-22 09:57:54,752 INFO L226 Difference]: Without dead ends: 23092 [2020-12-22 09:57:54,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:57:54,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23092 states. [2020-12-22 09:57:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23092 to 13706. [2020-12-22 09:57:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13706 states. [2020-12-22 09:57:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13706 states to 13706 states and 19810 transitions. [2020-12-22 09:57:55,932 INFO L78 Accepts]: Start accepts. Automaton has 13706 states and 19810 transitions. Word has length 94 [2020-12-22 09:57:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:55,932 INFO L481 AbstractCegarLoop]: Abstraction has 13706 states and 19810 transitions. [2020-12-22 09:57:55,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:57:55,933 INFO L276 IsEmpty]: Start isEmpty. Operand 13706 states and 19810 transitions. [2020-12-22 09:57:55,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 09:57:55,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:55,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-12-22 09:57:55,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:57:55,938 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:55,939 INFO L82 PathProgramCache]: Analyzing trace with hash 624038030, now seen corresponding path program 1 times [2020-12-22 09:57:55,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:55,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533517501] [2020-12-22 09:57:55,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 09:57:56,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533517501] [2020-12-22 09:57:56,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:56,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:57:56,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447979486] [2020-12-22 09:57:56,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:57:56,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:56,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:57:56,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:57:56,065 INFO L87 Difference]: Start difference. First operand 13706 states and 19810 transitions. Second operand 7 states. [2020-12-22 09:57:57,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:57:57,305 INFO L93 Difference]: Finished difference Result 30038 states and 43464 transitions. [2020-12-22 09:57:57,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:57:57,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 09:57:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:57:57,362 INFO L225 Difference]: With dead ends: 30038 [2020-12-22 09:57:57,362 INFO L226 Difference]: Without dead ends: 26564 [2020-12-22 09:57:57,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:57:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26564 states. [2020-12-22 09:57:58,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26564 to 17178. [2020-12-22 09:57:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17178 states. [2020-12-22 09:57:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17178 states to 17178 states and 24786 transitions. [2020-12-22 09:57:58,257 INFO L78 Accepts]: Start accepts. Automaton has 17178 states and 24786 transitions. Word has length 94 [2020-12-22 09:57:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:58,257 INFO L481 AbstractCegarLoop]: Abstraction has 17178 states and 24786 transitions. [2020-12-22 09:57:58,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:57:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 17178 states and 24786 transitions. [2020-12-22 09:57:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 09:57:58,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:58,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-12-22 09:57:58,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:57:58,263 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:58,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:58,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1851857618, now seen corresponding path program 1 times [2020-12-22 09:57:58,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:58,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988637388] [2020-12-22 09:57:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 09:57:58,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988637388] [2020-12-22 09:57:58,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:58,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:57:58,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160574552] [2020-12-22 09:57:58,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:57:58,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:58,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:57:58,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:57:58,529 INFO L87 Difference]: Start difference. First operand 17178 states and 24786 transitions. Second operand 7 states. [2020-12-22 09:58:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:58:00,053 INFO L93 Difference]: Finished difference Result 33510 states and 48440 transitions. [2020-12-22 09:58:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:58:00,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 09:58:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:58:00,100 INFO L225 Difference]: With dead ends: 33510 [2020-12-22 09:58:00,100 INFO L226 Difference]: Without dead ends: 30036 [2020-12-22 09:58:00,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:58:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30036 states. [2020-12-22 09:58:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30036 to 20650. [2020-12-22 09:58:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20650 states. [2020-12-22 09:58:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20650 states to 20650 states and 29762 transitions. [2020-12-22 09:58:01,336 INFO L78 Accepts]: Start accepts. Automaton has 20650 states and 29762 transitions. Word has length 94 [2020-12-22 09:58:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:58:01,337 INFO L481 AbstractCegarLoop]: Abstraction has 20650 states and 29762 transitions. [2020-12-22 09:58:01,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:58:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 20650 states and 29762 transitions. [2020-12-22 09:58:01,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 09:58:01,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:58:01,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2020-12-22 09:58:01,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:58:01,344 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:58:01,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:58:01,345 INFO L82 PathProgramCache]: Analyzing trace with hash 436552364, now seen corresponding path program 1 times [2020-12-22 09:58:01,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:58:01,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254834122] [2020-12-22 09:58:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:58:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:58:01,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254834122] [2020-12-22 09:58:01,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822388311] [2020-12-22 09:58:01,484 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 09:58:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:01,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 09:58:01,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:58:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:58:01,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 09:58:01,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-12-22 09:58:01,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356053191] [2020-12-22 09:58:01,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:58:01,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:58:01,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:58:01,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:58:01,708 INFO L87 Difference]: Start difference. First operand 20650 states and 29762 transitions. Second operand 3 states. [2020-12-22 09:58:07,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:58:07,764 INFO L93 Difference]: Finished difference Result 23656 states and 34449 transitions. [2020-12-22 09:58:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:58:07,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 09:58:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:58:07,796 INFO L225 Difference]: With dead ends: 23656 [2020-12-22 09:58:07,796 INFO L226 Difference]: Without dead ends: 22152 [2020-12-22 09:58:07,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:58:07,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22152 states. [2020-12-22 09:58:08,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22152 to 22152. [2020-12-22 09:58:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22152 states. [2020-12-22 09:58:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22152 states to 22152 states and 31540 transitions. [2020-12-22 09:58:08,853 INFO L78 Accepts]: Start accepts. Automaton has 22152 states and 31540 transitions. Word has length 95 [2020-12-22 09:58:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:58:08,854 INFO L481 AbstractCegarLoop]: Abstraction has 22152 states and 31540 transitions. [2020-12-22 09:58:08,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:58:08,854 INFO L276 IsEmpty]: Start isEmpty. Operand 22152 states and 31540 transitions. [2020-12-22 09:58:08,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 09:58:08,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:58:08,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 09:58:09,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 09:58:09,147 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:58:09,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:58:09,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2023924156, now seen corresponding path program 1 times [2020-12-22 09:58:09,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:58:09,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38992595] [2020-12-22 09:58:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:58:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:58:09,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38992595] [2020-12-22 09:58:09,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:58:09,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:58:09,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091443344] [2020-12-22 09:58:09,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:58:09,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:58:09,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:58:09,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:58:09,233 INFO L87 Difference]: Start difference. First operand 22152 states and 31540 transitions. Second operand 3 states. [2020-12-22 09:58:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:58:10,146 INFO L93 Difference]: Finished difference Result 35561 states and 50937 transitions. [2020-12-22 09:58:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:58:10,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 09:58:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:58:10,170 INFO L225 Difference]: With dead ends: 35561 [2020-12-22 09:58:10,170 INFO L226 Difference]: Without dead ends: 16455 [2020-12-22 09:58:10,194 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 09:58:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16455 states. [2020-12-22 09:58:11,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16455 to 16453. [2020-12-22 09:58:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16453 states. [2020-12-22 09:58:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16453 states to 16453 states and 23382 transitions. [2020-12-22 09:58:11,082 INFO L78 Accepts]: Start accepts. Automaton has 16453 states and 23382 transitions. Word has length 96 [2020-12-22 09:58:11,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:58:11,082 INFO L481 AbstractCegarLoop]: Abstraction has 16453 states and 23382 transitions. [2020-12-22 09:58:11,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:58:11,082 INFO L276 IsEmpty]: Start isEmpty. Operand 16453 states and 23382 transitions. [2020-12-22 09:58:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 09:58:11,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:58:11,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-12-22 09:58:11,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:58:11,087 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:58:11,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:58:11,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1980328951, now seen corresponding path program 1 times [2020-12-22 09:58:11,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:58:11,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879325788] [2020-12-22 09:58:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:58:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:58:11,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879325788] [2020-12-22 09:58:11,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:58:11,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:58:11,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534468330] [2020-12-22 09:58:11,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:58:11,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:58:11,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:58:11,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:58:11,206 INFO L87 Difference]: Start difference. First operand 16453 states and 23382 transitions. Second operand 7 states. [2020-12-22 09:58:12,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:58:12,629 INFO L93 Difference]: Finished difference Result 28625 states and 40988 transitions. [2020-12-22 09:58:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:58:12,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-12-22 09:58:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:58:12,661 INFO L225 Difference]: With dead ends: 28625 [2020-12-22 09:58:12,661 INFO L226 Difference]: Without dead ends: 26191 [2020-12-22 09:58:12,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:58:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26191 states. [2020-12-22 09:58:13,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26191 to 18885. [2020-12-22 09:58:13,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18885 states. [2020-12-22 09:58:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18885 states to 18885 states and 26870 transitions. [2020-12-22 09:58:13,684 INFO L78 Accepts]: Start accepts. Automaton has 18885 states and 26870 transitions. Word has length 96 [2020-12-22 09:58:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:58:13,687 INFO L481 AbstractCegarLoop]: Abstraction has 18885 states and 26870 transitions. [2020-12-22 09:58:13,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:58:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 18885 states and 26870 transitions. [2020-12-22 09:58:13,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 09:58:13,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:58:13,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-12-22 09:58:13,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:58:13,693 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:58:13,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:58:13,693 INFO L82 PathProgramCache]: Analyzing trace with hash 28168523, now seen corresponding path program 1 times [2020-12-22 09:58:13,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:58:13,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189677082] [2020-12-22 09:58:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:58:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:58:13,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189677082] [2020-12-22 09:58:13,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:58:13,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:58:13,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663083892] [2020-12-22 09:58:13,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:58:13,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:58:13,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:58:13,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:58:13,761 INFO L87 Difference]: Start difference. First operand 18885 states and 26870 transitions. Second operand 3 states. [2020-12-22 09:58:14,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:58:14,345 INFO L93 Difference]: Finished difference Result 26793 states and 38208 transitions. [2020-12-22 09:58:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:58:14,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 09:58:14,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:58:14,356 INFO L225 Difference]: With dead ends: 26793 [2020-12-22 09:58:14,356 INFO L226 Difference]: Without dead ends: 10983 [2020-12-22 09:58:14,377 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 09:58:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10983 states. [2020-12-22 09:58:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10983 to 10981. [2020-12-22 09:58:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10981 states. [2020-12-22 09:58:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10981 states to 10981 states and 15430 transitions. [2020-12-22 09:58:14,961 INFO L78 Accepts]: Start accepts. Automaton has 10981 states and 15430 transitions. Word has length 97 [2020-12-22 09:58:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:58:14,962 INFO L481 AbstractCegarLoop]: Abstraction has 10981 states and 15430 transitions. [2020-12-22 09:58:14,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:58:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 10981 states and 15430 transitions. [2020-12-22 09:58:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 09:58:14,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:58:14,965 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-12-22 09:58:14,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:58:14,965 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:58:14,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:58:14,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1887443071, now seen corresponding path program 1 times [2020-12-22 09:58:14,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:58:14,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358728822] [2020-12-22 09:58:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:58:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:15,025 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 09:58:15,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358728822] [2020-12-22 09:58:15,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:58:15,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:58:15,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226079282] [2020-12-22 09:58:15,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:58:15,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:58:15,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:58:15,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:58:15,028 INFO L87 Difference]: Start difference. First operand 10981 states and 15430 transitions. Second operand 3 states. [2020-12-22 09:58:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:58:15,479 INFO L93 Difference]: Finished difference Result 14937 states and 21048 transitions. [2020-12-22 09:58:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:58:15,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 09:58:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:58:15,492 INFO L225 Difference]: With dead ends: 14937 [2020-12-22 09:58:15,493 INFO L226 Difference]: Without dead ends: 7031 [2020-12-22 09:58:15,504 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 09:58:15,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7031 states. [2020-12-22 09:58:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7031 to 7029. [2020-12-22 09:58:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7029 states. [2020-12-22 09:58:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 9762 transitions. [2020-12-22 09:58:15,904 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 9762 transitions. Word has length 97 [2020-12-22 09:58:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:58:15,905 INFO L481 AbstractCegarLoop]: Abstraction has 7029 states and 9762 transitions. [2020-12-22 09:58:15,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:58:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 9762 transitions. [2020-12-22 09:58:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 09:58:15,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:58:15,907 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] [2020-12-22 09:58:15,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 09:58:15,908 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:58:15,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:58:15,908 INFO L82 PathProgramCache]: Analyzing trace with hash -300840777, now seen corresponding path program 1 times [2020-12-22 09:58:15,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:58:15,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897314027] [2020-12-22 09:58:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:58:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:58:16,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897314027] [2020-12-22 09:58:16,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:58:16,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:58:16,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815847352] [2020-12-22 09:58:16,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:58:16,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:58:16,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:58:16,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:58:16,011 INFO L87 Difference]: Start difference. First operand 7029 states and 9762 transitions. Second operand 3 states. [2020-12-22 09:58:16,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:58:16,196 INFO L93 Difference]: Finished difference Result 9009 states and 12546 transitions. [2020-12-22 09:58:16,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:58:16,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 09:58:16,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:58:16,201 INFO L225 Difference]: With dead ends: 9009 [2020-12-22 09:58:16,201 INFO L226 Difference]: Without dead ends: 5055 [2020-12-22 09:58:16,204 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 09:58:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2020-12-22 09:58:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 5053. [2020-12-22 09:58:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5053 states. [2020-12-22 09:58:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5053 states to 5053 states and 6954 transitions. [2020-12-22 09:58:16,389 INFO L78 Accepts]: Start accepts. Automaton has 5053 states and 6954 transitions. Word has length 97 [2020-12-22 09:58:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:58:16,390 INFO L481 AbstractCegarLoop]: Abstraction has 5053 states and 6954 transitions. [2020-12-22 09:58:16,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:58:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5053 states and 6954 transitions. [2020-12-22 09:58:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 09:58:16,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:58:16,391 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] [2020-12-22 09:58:16,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 09:58:16,392 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:58:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:58:16,392 INFO L82 PathProgramCache]: Analyzing trace with hash -387959571, now seen corresponding path program 1 times [2020-12-22 09:58:16,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:58:16,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49466240] [2020-12-22 09:58:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:58:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:58:16,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49466240] [2020-12-22 09:58:16,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422868477] [2020-12-22 09:58:16,685 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 09:58:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:16,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 09:58:16,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:58:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:58:17,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:58:17,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 16 [2020-12-22 09:58:17,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290586665] [2020-12-22 09:58:17,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 09:58:17,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:58:17,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 09:58:17,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 09:58:17,198 INFO L87 Difference]: Start difference. First operand 5053 states and 6954 transitions. Second operand 16 states. [2020-12-22 09:58:20,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:58:20,709 INFO L93 Difference]: Finished difference Result 16124 states and 21973 transitions. [2020-12-22 09:58:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 09:58:20,709 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2020-12-22 09:58:20,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:58:20,755 INFO L225 Difference]: With dead ends: 16124 [2020-12-22 09:58:20,756 INFO L226 Difference]: Without dead ends: 14146 [2020-12-22 09:58:20,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=491, Invalid=2161, Unknown=0, NotChecked=0, Total=2652 [2020-12-22 09:58:20,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14146 states. [2020-12-22 09:58:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14146 to 10775. [2020-12-22 09:58:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10775 states. [2020-12-22 09:58:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10775 states to 10775 states and 14516 transitions. [2020-12-22 09:58:21,792 INFO L78 Accepts]: Start accepts. Automaton has 10775 states and 14516 transitions. Word has length 97 [2020-12-22 09:58:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:58:21,792 INFO L481 AbstractCegarLoop]: Abstraction has 10775 states and 14516 transitions. [2020-12-22 09:58:21,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 09:58:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 10775 states and 14516 transitions. [2020-12-22 09:58:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 09:58:21,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:58:21,796 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:58:22,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:58:22,011 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:58:22,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:58:22,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1231715697, now seen corresponding path program 1 times [2020-12-22 09:58:22,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:58:22,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569097310] [2020-12-22 09:58:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:58:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:58:22,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569097310] [2020-12-22 09:58:22,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304549456] [2020-12-22 09:58:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:58:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:22,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:58:22,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:58:22,624 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:58:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:58:22,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:58:22,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 09:58:22,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405503245] [2020-12-22 09:58:22,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 09:58:22,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:58:22,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 09:58:22,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-12-22 09:58:22,970 INFO L87 Difference]: Start difference. First operand 10775 states and 14516 transitions. Second operand 22 states. [2020-12-22 09:58:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:58:27,282 INFO L93 Difference]: Finished difference Result 41576 states and 55582 transitions. [2020-12-22 09:58:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 09:58:27,283 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2020-12-22 09:58:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:58:27,381 INFO L225 Difference]: With dead ends: 41576 [2020-12-22 09:58:27,381 INFO L226 Difference]: Without dead ends: 35073 [2020-12-22 09:58:27,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=415, Invalid=1391, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 09:58:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35073 states. [2020-12-22 09:58:29,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35073 to 23278. [2020-12-22 09:58:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23278 states. [2020-12-22 09:58:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23278 states to 23278 states and 31055 transitions. [2020-12-22 09:58:29,215 INFO L78 Accepts]: Start accepts. Automaton has 23278 states and 31055 transitions. Word has length 98 [2020-12-22 09:58:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:58:29,215 INFO L481 AbstractCegarLoop]: Abstraction has 23278 states and 31055 transitions. [2020-12-22 09:58:29,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 09:58:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 23278 states and 31055 transitions. [2020-12-22 09:58:29,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 09:58:29,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:58:29,218 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:58:29,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 09:58:29,420 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:58:29,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:58:29,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1198087855, now seen corresponding path program 1 times [2020-12-22 09:58:29,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:58:29,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183924838] [2020-12-22 09:58:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:58:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:58:29,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183924838] [2020-12-22 09:58:29,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44164480] [2020-12-22 09:58:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:58:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:58:29,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:58:29,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:58:30,037 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:58:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:58:30,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:58:30,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:58:30,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417526944] [2020-12-22 09:58:30,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:58:30,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:58:30,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:58:30,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:58:30,334 INFO L87 Difference]: Start difference. First operand 23278 states and 31055 transitions. Second operand 17 states. [2020-12-22 09:58:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:58:55,195 INFO L93 Difference]: Finished difference Result 217833 states and 288865 transitions. [2020-12-22 09:58:55,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-12-22 09:58:55,196 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-12-22 09:58:55,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:58:55,649 INFO L225 Difference]: With dead ends: 217833 [2020-12-22 09:58:55,650 INFO L226 Difference]: Without dead ends: 198276 [2020-12-22 09:58:55,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2540 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1236, Invalid=6596, Unknown=0, NotChecked=0, Total=7832 [2020-12-22 09:58:55,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198276 states. [2020-12-22 09:59:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198276 to 113551. [2020-12-22 09:59:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113551 states. [2020-12-22 09:59:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113551 states to 113551 states and 148438 transitions. [2020-12-22 09:59:08,375 INFO L78 Accepts]: Start accepts. Automaton has 113551 states and 148438 transitions. Word has length 98 [2020-12-22 09:59:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:59:08,375 INFO L481 AbstractCegarLoop]: Abstraction has 113551 states and 148438 transitions. [2020-12-22 09:59:08,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:59:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 113551 states and 148438 transitions. [2020-12-22 09:59:08,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 09:59:08,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:59:08,379 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:59:08,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:59:08,593 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:59:08,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:59:08,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2130421773, now seen corresponding path program 1 times [2020-12-22 09:59:08,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:59:08,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831454654] [2020-12-22 09:59:08,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:59:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:59:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 09:59:08,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831454654] [2020-12-22 09:59:08,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:59:08,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:59:08,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491088481] [2020-12-22 09:59:08,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:59:08,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:59:08,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:59:08,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:59:08,960 INFO L87 Difference]: Start difference. First operand 113551 states and 148438 transitions. Second operand 6 states. [2020-12-22 09:59:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:59:19,417 INFO L93 Difference]: Finished difference Result 213996 states and 280219 transitions. [2020-12-22 09:59:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:59:19,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-12-22 09:59:19,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:59:19,561 INFO L225 Difference]: With dead ends: 213996 [2020-12-22 09:59:19,561 INFO L226 Difference]: Without dead ends: 103692 [2020-12-22 09:59:19,624 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 09:59:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103692 states. [2020-12-22 09:59:30,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103692 to 103692. [2020-12-22 09:59:30,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103692 states. [2020-12-22 09:59:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103692 states to 103692 states and 134677 transitions. [2020-12-22 09:59:30,249 INFO L78 Accepts]: Start accepts. Automaton has 103692 states and 134677 transitions. Word has length 98 [2020-12-22 09:59:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:59:30,249 INFO L481 AbstractCegarLoop]: Abstraction has 103692 states and 134677 transitions. [2020-12-22 09:59:30,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:59:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 103692 states and 134677 transitions. [2020-12-22 09:59:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 09:59:30,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:59:30,252 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:59:30,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 09:59:30,253 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:59:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:59:30,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1745709901, now seen corresponding path program 1 times [2020-12-22 09:59:30,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:59:30,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172349324] [2020-12-22 09:59:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:59:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:59:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 09:59:30,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172349324] [2020-12-22 09:59:30,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:59:30,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:59:30,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953728761] [2020-12-22 09:59:30,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:59:30,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:59:30,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:59:30,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:59:30,351 INFO L87 Difference]: Start difference. First operand 103692 states and 134677 transitions. Second operand 6 states. [2020-12-22 09:59:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:59:38,590 INFO L93 Difference]: Finished difference Result 177230 states and 230128 transitions. [2020-12-22 09:59:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:59:38,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-12-22 09:59:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:59:38,672 INFO L225 Difference]: With dead ends: 177230 [2020-12-22 09:59:38,672 INFO L226 Difference]: Without dead ends: 76951 [2020-12-22 09:59:38,881 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 09:59:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76951 states. [2020-12-22 09:59:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76951 to 76951. [2020-12-22 09:59:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76951 states. [2020-12-22 09:59:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76951 states to 76951 states and 98605 transitions. [2020-12-22 09:59:47,148 INFO L78 Accepts]: Start accepts. Automaton has 76951 states and 98605 transitions. Word has length 98 [2020-12-22 09:59:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:59:47,149 INFO L481 AbstractCegarLoop]: Abstraction has 76951 states and 98605 transitions. [2020-12-22 09:59:47,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:59:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 76951 states and 98605 transitions. [2020-12-22 09:59:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 09:59:47,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:59:47,152 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:59:47,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 09:59:47,152 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:59:47,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:59:47,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1530628851, now seen corresponding path program 1 times [2020-12-22 09:59:47,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:59:47,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211552594] [2020-12-22 09:59:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:59:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:59:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 09:59:47,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211552594] [2020-12-22 09:59:47,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:59:47,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:59:47,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065490197] [2020-12-22 09:59:47,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:59:47,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:59:47,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:59:47,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:59:47,237 INFO L87 Difference]: Start difference. First operand 76951 states and 98605 transitions. Second operand 6 states. [2020-12-22 09:59:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:59:54,108 INFO L93 Difference]: Finished difference Result 132741 states and 170269 transitions. [2020-12-22 09:59:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:59:54,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-12-22 09:59:54,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:59:54,179 INFO L225 Difference]: With dead ends: 132741 [2020-12-22 09:59:54,179 INFO L226 Difference]: Without dead ends: 58921 [2020-12-22 09:59:54,217 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 09:59:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58921 states. [2020-12-22 10:00:00,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58921 to 58921. [2020-12-22 10:00:00,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58921 states. [2020-12-22 10:00:00,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58921 states to 58921 states and 75299 transitions. [2020-12-22 10:00:00,744 INFO L78 Accepts]: Start accepts. Automaton has 58921 states and 75299 transitions. Word has length 98 [2020-12-22 10:00:00,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:00:00,744 INFO L481 AbstractCegarLoop]: Abstraction has 58921 states and 75299 transitions. [2020-12-22 10:00:00,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:00:00,744 INFO L276 IsEmpty]: Start isEmpty. Operand 58921 states and 75299 transitions. [2020-12-22 10:00:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 10:00:00,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:00:00,748 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:00:00,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 10:00:00,749 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:00:00,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:00:00,749 INFO L82 PathProgramCache]: Analyzing trace with hash -328972562, now seen corresponding path program 1 times [2020-12-22 10:00:00,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:00:00,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009705129] [2020-12-22 10:00:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:00:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:00:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 10:00:00,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009705129] [2020-12-22 10:00:00,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:00:00,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:00:00,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060425428] [2020-12-22 10:00:00,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:00:00,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:00:00,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:00:00,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:00:00,826 INFO L87 Difference]: Start difference. First operand 58921 states and 75299 transitions. Second operand 6 states. [2020-12-22 10:00:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:00:06,557 INFO L93 Difference]: Finished difference Result 101975 states and 130202 transitions. [2020-12-22 10:00:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:00:06,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 10:00:06,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:00:06,600 INFO L225 Difference]: With dead ends: 101975 [2020-12-22 10:00:06,600 INFO L226 Difference]: Without dead ends: 46187 [2020-12-22 10:00:06,625 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 10:00:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46187 states. [2020-12-22 10:00:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46187 to 46187. [2020-12-22 10:00:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46187 states. [2020-12-22 10:00:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46187 states to 46187 states and 58542 transitions. [2020-12-22 10:00:11,811 INFO L78 Accepts]: Start accepts. Automaton has 46187 states and 58542 transitions. Word has length 99 [2020-12-22 10:00:11,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:00:11,811 INFO L481 AbstractCegarLoop]: Abstraction has 46187 states and 58542 transitions. [2020-12-22 10:00:11,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:00:11,811 INFO L276 IsEmpty]: Start isEmpty. Operand 46187 states and 58542 transitions. [2020-12-22 10:00:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 10:00:11,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:00:11,814 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:00:11,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 10:00:11,814 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:00:11,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:00:11,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1888515992, now seen corresponding path program 1 times [2020-12-22 10:00:11,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:00:11,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093093962] [2020-12-22 10:00:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:00:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:00:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:00:12,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093093962] [2020-12-22 10:00:12,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886043056] [2020-12-22 10:00:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 10:00:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:00:12,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 10:00:12,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:00:12,410 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 10:00:12,679 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-12-22 10:00:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:00:13,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:00:13,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 20 [2020-12-22 10:00:13,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791344154] [2020-12-22 10:00:13,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 10:00:13,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:00:13,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 10:00:13,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-12-22 10:00:13,326 INFO L87 Difference]: Start difference. First operand 46187 states and 58542 transitions. Second operand 20 states. [2020-12-22 10:00:14,168 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-12-22 10:00:14,583 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2020-12-22 10:00:15,154 WARN L197 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 110 [2020-12-22 10:00:15,841 WARN L197 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 116 [2020-12-22 10:00:16,389 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 113 [2020-12-22 10:00:17,152 WARN L197 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 113 [2020-12-22 10:00:17,909 WARN L197 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2020-12-22 10:00:18,442 WARN L197 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-12-22 10:00:19,125 WARN L197 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-12-22 10:00:19,742 WARN L197 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-12-22 10:00:20,445 WARN L197 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2020-12-22 10:00:21,119 WARN L197 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 119 [2020-12-22 10:00:22,035 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-12-22 10:00:22,777 WARN L197 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2020-12-22 10:00:23,430 WARN L197 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2020-12-22 10:00:24,315 WARN L197 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 113 [2020-12-22 10:00:27,598 WARN L197 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 125 [2020-12-22 10:00:28,384 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 128 [2020-12-22 10:00:29,112 WARN L197 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 116 [2020-12-22 10:00:29,535 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-12-22 10:00:30,406 WARN L197 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 119 [2020-12-22 10:00:30,771 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-12-22 10:00:31,214 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-22 10:00:31,695 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-12-22 10:00:32,276 WARN L197 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-12-22 10:00:32,667 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-12-22 10:00:33,799 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 132 DAG size of output: 119 [2020-12-22 10:00:34,699 WARN L197 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 116 [2020-12-22 10:00:35,166 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-12-22 10:00:35,528 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-22 10:00:36,568 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-12-22 10:00:36,929 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-22 10:00:37,766 WARN L197 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 116 [2020-12-22 10:00:38,161 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-22 10:00:38,551 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-12-22 10:00:42,050 WARN L197 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-12-22 10:00:43,607 WARN L197 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-12-22 10:00:44,635 WARN L197 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 125 [2020-12-22 10:00:45,151 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-12-22 10:00:45,624 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-12-22 10:00:46,425 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-12-22 10:00:46,891 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-12-22 10:00:47,642 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-12-22 10:00:47,939 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 10:00:48,493 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-12-22 10:00:48,790 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-12-22 10:00:59,470 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-22 10:00:59,744 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-22 10:01:00,658 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-12-22 10:01:00,943 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 10:01:03,168 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-22 10:01:03,686 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-12-22 10:01:10,343 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 10:01:11,005 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-22 10:01:17,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:17,465 INFO L93 Difference]: Finished difference Result 198313 states and 250432 transitions. [2020-12-22 10:01:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-12-22 10:01:17,466 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 100 [2020-12-22 10:01:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:17,662 INFO L225 Difference]: With dead ends: 198313 [2020-12-22 10:01:17,662 INFO L226 Difference]: Without dead ends: 159117 [2020-12-22 10:01:17,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=1297, Invalid=5183, Unknown=0, NotChecked=0, Total=6480 [2020-12-22 10:01:18,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159117 states.