/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:55:57,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:55:57,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:55:57,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:55:57,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:55:57,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:55:57,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:55:57,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:55:57,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:55:57,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:55:57,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:55:57,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:55:57,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:55:57,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:55:57,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:55:57,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:55:57,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:55:57,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:55:57,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:55:57,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:55:57,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:55:57,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:55:57,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:55:57,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:55:57,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:55:57,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:55:57,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:55:57,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:55:57,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:55:57,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:55:57,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:55:57,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:55:57,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:55:57,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:55:57,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:55:57,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:55:57,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:55:57,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:55:57,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:55:57,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:55:57,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:55:57,799 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:55:57,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:55:57,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:55:57,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:55:57,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:55:57,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:55:57,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:55:57,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:55:57,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:55:57,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:55:57,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:55:57,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:55:57,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:55:57,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:55:57,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:55:57,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:55:57,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:55:57,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:55:57,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:55:57,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:55:57,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:55:57,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:55:58,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:55:58,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:55:58,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:55:58,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:55:58,266 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:55:58,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2020-12-22 05:55:58,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac28cb190/67c6817df95843499806255082e467a1/FLAG411a79457 [2020-12-22 05:55:59,191 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:55:59,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2020-12-22 05:55:59,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac28cb190/67c6817df95843499806255082e467a1/FLAG411a79457 [2020-12-22 05:55:59,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac28cb190/67c6817df95843499806255082e467a1 [2020-12-22 05:55:59,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:55:59,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:55:59,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:59,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:55:59,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:55:59,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:59" (1/1) ... [2020-12-22 05:55:59,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f481835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:59, skipping insertion in model container [2020-12-22 05:55:59,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:59" (1/1) ... [2020-12-22 05:55:59,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:55:59,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:55:59,803 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c[8261,8274] [2020-12-22 05:56:00,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:56:00,147 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:56:00,177 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c[8261,8274] [2020-12-22 05:56:00,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:56:00,491 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:56:00,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00 WrapperNode [2020-12-22 05:56:00,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:56:00,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:56:00,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:56:00,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:56:00,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:00,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:56:01,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:56:01,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:56:01,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:56:01,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:01,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... [2020-12-22 05:56:02,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:56:02,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:56:02,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:56:02,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:56:02,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:56:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:56:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:56:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:56:02,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:56:19,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:56:19,802 INFO L299 CfgBuilder]: Removed 1963 assume(true) statements. [2020-12-22 05:56:19,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:56:19 BoogieIcfgContainer [2020-12-22 05:56:19,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:56:19,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:56:19,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:56:19,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:56:19,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:55:59" (1/3) ... [2020-12-22 05:56:19,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea6cf1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:56:19, skipping insertion in model container [2020-12-22 05:56:19,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:00" (2/3) ... [2020-12-22 05:56:19,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea6cf1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:56:19, skipping insertion in model container [2020-12-22 05:56:19,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:56:19" (3/3) ... [2020-12-22 05:56:19,823 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product23.cil.c [2020-12-22 05:56:19,830 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:56:19,840 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:56:19,860 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:56:19,919 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:56:19,919 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:56:19,919 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:56:19,919 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:56:19,919 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:56:19,919 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:56:19,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:56:19,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:56:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 8587 states. [2020-12-22 05:56:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:56:20,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:20,089 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] [2020-12-22 05:56:20,089 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:20,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:20,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1825340265, now seen corresponding path program 1 times [2020-12-22 05:56:20,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:20,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137205057] [2020-12-22 05:56:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:20,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137205057] [2020-12-22 05:56:20,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:20,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:20,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001004990] [2020-12-22 05:56:20,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:20,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:20,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:20,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:20,779 INFO L87 Difference]: Start difference. First operand 8587 states. Second operand 3 states. [2020-12-22 05:56:21,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:21,414 INFO L93 Difference]: Finished difference Result 20630 states and 38930 transitions. [2020-12-22 05:56:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:21,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 05:56:21,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:21,529 INFO L225 Difference]: With dead ends: 20630 [2020-12-22 05:56:21,530 INFO L226 Difference]: Without dead ends: 12047 [2020-12-22 05:56:21,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12047 states. [2020-12-22 05:56:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12047 to 8583. [2020-12-22 05:56:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8583 states. [2020-12-22 05:56:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8583 states to 8583 states and 16184 transitions. [2020-12-22 05:56:21,945 INFO L78 Accepts]: Start accepts. Automaton has 8583 states and 16184 transitions. Word has length 44 [2020-12-22 05:56:21,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:21,945 INFO L481 AbstractCegarLoop]: Abstraction has 8583 states and 16184 transitions. [2020-12-22 05:56:21,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:21,946 INFO L276 IsEmpty]: Start isEmpty. Operand 8583 states and 16184 transitions. [2020-12-22 05:56:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:56:21,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:21,951 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] [2020-12-22 05:56:21,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:56:21,953 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:21,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:21,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1245466461, now seen corresponding path program 1 times [2020-12-22 05:56:21,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:21,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454790062] [2020-12-22 05:56:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:22,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454790062] [2020-12-22 05:56:22,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:22,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:56:22,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130107611] [2020-12-22 05:56:22,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:56:22,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:22,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:56:22,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:56:22,175 INFO L87 Difference]: Start difference. First operand 8583 states and 16184 transitions. Second operand 6 states. [2020-12-22 05:56:23,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:23,277 INFO L93 Difference]: Finished difference Result 24004 states and 45264 transitions. [2020-12-22 05:56:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:56:23,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-12-22 05:56:23,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:23,379 INFO L225 Difference]: With dead ends: 24004 [2020-12-22 05:56:23,380 INFO L226 Difference]: Without dead ends: 15463 [2020-12-22 05:56:23,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:56:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15463 states. [2020-12-22 05:56:23,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15463 to 8579. [2020-12-22 05:56:23,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8579 states. [2020-12-22 05:56:23,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8579 states to 8579 states and 16173 transitions. [2020-12-22 05:56:23,840 INFO L78 Accepts]: Start accepts. Automaton has 8579 states and 16173 transitions. Word has length 49 [2020-12-22 05:56:23,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:23,841 INFO L481 AbstractCegarLoop]: Abstraction has 8579 states and 16173 transitions. [2020-12-22 05:56:23,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:56:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 8579 states and 16173 transitions. [2020-12-22 05:56:23,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 05:56:23,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:23,847 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] [2020-12-22 05:56:23,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:56:23,848 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:23,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:23,850 INFO L82 PathProgramCache]: Analyzing trace with hash -385277059, now seen corresponding path program 1 times [2020-12-22 05:56:23,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:23,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613748224] [2020-12-22 05:56:23,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:24,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613748224] [2020-12-22 05:56:24,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:24,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:24,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478624087] [2020-12-22 05:56:24,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:24,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:24,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:24,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:24,030 INFO L87 Difference]: Start difference. First operand 8579 states and 16173 transitions. Second operand 4 states. [2020-12-22 05:56:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:25,351 INFO L93 Difference]: Finished difference Result 27430 states and 51714 transitions. [2020-12-22 05:56:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:25,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 05:56:25,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:25,410 INFO L225 Difference]: With dead ends: 27430 [2020-12-22 05:56:25,411 INFO L226 Difference]: Without dead ends: 18893 [2020-12-22 05:56:25,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18893 states. [2020-12-22 05:56:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18893 to 8579. [2020-12-22 05:56:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8579 states. [2020-12-22 05:56:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8579 states to 8579 states and 16169 transitions. [2020-12-22 05:56:26,105 INFO L78 Accepts]: Start accepts. Automaton has 8579 states and 16169 transitions. Word has length 50 [2020-12-22 05:56:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:26,112 INFO L481 AbstractCegarLoop]: Abstraction has 8579 states and 16169 transitions. [2020-12-22 05:56:26,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand 8579 states and 16169 transitions. [2020-12-22 05:56:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:56:26,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:26,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:26,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:56:26,118 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:26,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:26,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1983350016, now seen corresponding path program 1 times [2020-12-22 05:56:26,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:26,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096311528] [2020-12-22 05:56:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:26,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096311528] [2020-12-22 05:56:26,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:26,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:26,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903197292] [2020-12-22 05:56:26,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:26,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:26,260 INFO L87 Difference]: Start difference. First operand 8579 states and 16169 transitions. Second operand 4 states. [2020-12-22 05:56:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:27,315 INFO L93 Difference]: Finished difference Result 20574 states and 38790 transitions. [2020-12-22 05:56:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:27,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 05:56:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:27,351 INFO L225 Difference]: With dead ends: 20574 [2020-12-22 05:56:27,351 INFO L226 Difference]: Without dead ends: 12037 [2020-12-22 05:56:27,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:27,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12037 states. [2020-12-22 05:56:27,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12037 to 8579. [2020-12-22 05:56:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8579 states. [2020-12-22 05:56:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8579 states to 8579 states and 16160 transitions. [2020-12-22 05:56:27,697 INFO L78 Accepts]: Start accepts. Automaton has 8579 states and 16160 transitions. Word has length 51 [2020-12-22 05:56:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:27,698 INFO L481 AbstractCegarLoop]: Abstraction has 8579 states and 16160 transitions. [2020-12-22 05:56:27,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 8579 states and 16160 transitions. [2020-12-22 05:56:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:56:27,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:27,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:27,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:56:27,703 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:27,703 INFO L82 PathProgramCache]: Analyzing trace with hash 53465762, now seen corresponding path program 1 times [2020-12-22 05:56:27,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:27,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401612118] [2020-12-22 05:56:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:27,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401612118] [2020-12-22 05:56:27,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:27,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:27,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087643794] [2020-12-22 05:56:27,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:27,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:27,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:27,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:27,813 INFO L87 Difference]: Start difference. First operand 8579 states and 16160 transitions. Second operand 4 states. [2020-12-22 05:56:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:28,719 INFO L93 Difference]: Finished difference Result 20574 states and 38772 transitions. [2020-12-22 05:56:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:28,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 05:56:28,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:28,761 INFO L225 Difference]: With dead ends: 20574 [2020-12-22 05:56:28,762 INFO L226 Difference]: Without dead ends: 12037 [2020-12-22 05:56:28,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:28,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12037 states. [2020-12-22 05:56:29,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12037 to 8579. [2020-12-22 05:56:29,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8579 states. [2020-12-22 05:56:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8579 states to 8579 states and 16151 transitions. [2020-12-22 05:56:29,327 INFO L78 Accepts]: Start accepts. Automaton has 8579 states and 16151 transitions. Word has length 52 [2020-12-22 05:56:29,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:29,328 INFO L481 AbstractCegarLoop]: Abstraction has 8579 states and 16151 transitions. [2020-12-22 05:56:29,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:29,328 INFO L276 IsEmpty]: Start isEmpty. Operand 8579 states and 16151 transitions. [2020-12-22 05:56:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:56:29,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:29,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:29,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:56:29,336 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:29,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:29,337 INFO L82 PathProgramCache]: Analyzing trace with hash 144748322, now seen corresponding path program 1 times [2020-12-22 05:56:29,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:29,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674927972] [2020-12-22 05:56:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:29,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674927972] [2020-12-22 05:56:29,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:29,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:29,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815623787] [2020-12-22 05:56:29,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:29,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:29,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:29,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:29,446 INFO L87 Difference]: Start difference. First operand 8579 states and 16151 transitions. Second operand 4 states. [2020-12-22 05:56:30,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:30,420 INFO L93 Difference]: Finished difference Result 23981 states and 45178 transitions. [2020-12-22 05:56:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:30,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 05:56:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:30,473 INFO L225 Difference]: With dead ends: 23981 [2020-12-22 05:56:30,474 INFO L226 Difference]: Without dead ends: 15423 [2020-12-22 05:56:30,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:30,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15423 states. [2020-12-22 05:56:30,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15423 to 8561. [2020-12-22 05:56:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8561 states. [2020-12-22 05:56:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8561 states to 8561 states and 16120 transitions. [2020-12-22 05:56:30,984 INFO L78 Accepts]: Start accepts. Automaton has 8561 states and 16120 transitions. Word has length 52 [2020-12-22 05:56:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:30,984 INFO L481 AbstractCegarLoop]: Abstraction has 8561 states and 16120 transitions. [2020-12-22 05:56:30,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:30,985 INFO L276 IsEmpty]: Start isEmpty. Operand 8561 states and 16120 transitions. [2020-12-22 05:56:30,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 05:56:30,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:30,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:30,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:56:30,988 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:30,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1192284667, now seen corresponding path program 1 times [2020-12-22 05:56:30,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:30,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998433125] [2020-12-22 05:56:30,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:31,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998433125] [2020-12-22 05:56:31,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:31,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:31,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199371058] [2020-12-22 05:56:31,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:31,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:31,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:31,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:31,059 INFO L87 Difference]: Start difference. First operand 8561 states and 16120 transitions. Second operand 4 states. [2020-12-22 05:56:31,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:31,906 INFO L93 Difference]: Finished difference Result 20538 states and 38689 transitions. [2020-12-22 05:56:31,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:31,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 05:56:31,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:31,942 INFO L225 Difference]: With dead ends: 20538 [2020-12-22 05:56:31,942 INFO L226 Difference]: Without dead ends: 11998 [2020-12-22 05:56:31,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:31,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11998 states. [2020-12-22 05:56:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11998 to 8561. [2020-12-22 05:56:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8561 states. [2020-12-22 05:56:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8561 states to 8561 states and 16114 transitions. [2020-12-22 05:56:32,461 INFO L78 Accepts]: Start accepts. Automaton has 8561 states and 16114 transitions. Word has length 53 [2020-12-22 05:56:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:32,461 INFO L481 AbstractCegarLoop]: Abstraction has 8561 states and 16114 transitions. [2020-12-22 05:56:32,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 8561 states and 16114 transitions. [2020-12-22 05:56:32,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 05:56:32,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:32,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:32,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:56:32,465 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:32,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1118372409, now seen corresponding path program 1 times [2020-12-22 05:56:32,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:32,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154721692] [2020-12-22 05:56:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:32,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154721692] [2020-12-22 05:56:32,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:32,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:32,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164937482] [2020-12-22 05:56:32,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:32,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:32,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:32,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:32,540 INFO L87 Difference]: Start difference. First operand 8561 states and 16114 transitions. Second operand 4 states. [2020-12-22 05:56:33,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:33,229 INFO L93 Difference]: Finished difference Result 20538 states and 38677 transitions. [2020-12-22 05:56:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:33,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 05:56:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:33,262 INFO L225 Difference]: With dead ends: 20538 [2020-12-22 05:56:33,262 INFO L226 Difference]: Without dead ends: 11998 [2020-12-22 05:56:33,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11998 states. [2020-12-22 05:56:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11998 to 8561. [2020-12-22 05:56:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8561 states. [2020-12-22 05:56:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8561 states to 8561 states and 16108 transitions. [2020-12-22 05:56:33,640 INFO L78 Accepts]: Start accepts. Automaton has 8561 states and 16108 transitions. Word has length 54 [2020-12-22 05:56:33,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:33,641 INFO L481 AbstractCegarLoop]: Abstraction has 8561 states and 16108 transitions. [2020-12-22 05:56:33,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:33,642 INFO L276 IsEmpty]: Start isEmpty. Operand 8561 states and 16108 transitions. [2020-12-22 05:56:33,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 05:56:33,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:33,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:33,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:56:33,645 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:33,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:33,646 INFO L82 PathProgramCache]: Analyzing trace with hash 366371980, now seen corresponding path program 1 times [2020-12-22 05:56:33,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:33,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140417107] [2020-12-22 05:56:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:33,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140417107] [2020-12-22 05:56:33,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:33,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:33,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076414267] [2020-12-22 05:56:33,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:33,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:33,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:33,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:33,746 INFO L87 Difference]: Start difference. First operand 8561 states and 16108 transitions. Second operand 3 states. [2020-12-22 05:56:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:34,300 INFO L93 Difference]: Finished difference Result 20529 states and 38654 transitions. [2020-12-22 05:56:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:34,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 05:56:34,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:34,331 INFO L225 Difference]: With dead ends: 20529 [2020-12-22 05:56:34,331 INFO L226 Difference]: Without dead ends: 11989 [2020-12-22 05:56:34,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:34,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11989 states. [2020-12-22 05:56:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11989 to 8561. [2020-12-22 05:56:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8561 states. [2020-12-22 05:56:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8561 states to 8561 states and 16107 transitions. [2020-12-22 05:56:34,888 INFO L78 Accepts]: Start accepts. Automaton has 8561 states and 16107 transitions. Word has length 55 [2020-12-22 05:56:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:34,888 INFO L481 AbstractCegarLoop]: Abstraction has 8561 states and 16107 transitions. [2020-12-22 05:56:34,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 8561 states and 16107 transitions. [2020-12-22 05:56:34,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 05:56:34,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:34,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:34,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:56:34,892 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:34,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1210377482, now seen corresponding path program 1 times [2020-12-22 05:56:34,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:34,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895796683] [2020-12-22 05:56:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:34,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895796683] [2020-12-22 05:56:34,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:34,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:56:34,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58326648] [2020-12-22 05:56:34,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:56:34,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:34,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:56:34,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:56:34,977 INFO L87 Difference]: Start difference. First operand 8561 states and 16107 transitions. Second operand 7 states. [2020-12-22 05:56:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:36,352 INFO L93 Difference]: Finished difference Result 27401 states and 51591 transitions. [2020-12-22 05:56:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:36,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-12-22 05:56:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:36,386 INFO L225 Difference]: With dead ends: 27401 [2020-12-22 05:56:36,387 INFO L226 Difference]: Without dead ends: 18867 [2020-12-22 05:56:36,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:56:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18867 states. [2020-12-22 05:56:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18867 to 8563. [2020-12-22 05:56:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-12-22 05:56:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 16108 transitions. [2020-12-22 05:56:36,845 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 16108 transitions. Word has length 55 [2020-12-22 05:56:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:36,845 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 16108 transitions. [2020-12-22 05:56:36,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:56:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 16108 transitions. [2020-12-22 05:56:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 05:56:36,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:36,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:36,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:56:36,853 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:36,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:36,854 INFO L82 PathProgramCache]: Analyzing trace with hash 147397052, now seen corresponding path program 1 times [2020-12-22 05:56:36,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:36,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481303409] [2020-12-22 05:56:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:36,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481303409] [2020-12-22 05:56:36,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:36,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:36,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206101341] [2020-12-22 05:56:36,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:36,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:36,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:36,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:36,996 INFO L87 Difference]: Start difference. First operand 8563 states and 16108 transitions. Second operand 4 states. [2020-12-22 05:56:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:44,091 INFO L93 Difference]: Finished difference Result 22653 states and 42824 transitions. [2020-12-22 05:56:44,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:56:44,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 05:56:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:44,112 INFO L225 Difference]: With dead ends: 22653 [2020-12-22 05:56:44,113 INFO L226 Difference]: Without dead ends: 14123 [2020-12-22 05:56:44,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:44,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14123 states. [2020-12-22 05:56:44,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14123 to 8563. [2020-12-22 05:56:44,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-12-22 05:56:44,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 16088 transitions. [2020-12-22 05:56:44,799 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 16088 transitions. Word has length 56 [2020-12-22 05:56:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:44,799 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 16088 transitions. [2020-12-22 05:56:44,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 16088 transitions. [2020-12-22 05:56:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:56:44,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:44,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:44,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:56:44,804 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:44,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:44,804 INFO L82 PathProgramCache]: Analyzing trace with hash 18306990, now seen corresponding path program 1 times [2020-12-22 05:56:44,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:44,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225050373] [2020-12-22 05:56:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:44,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225050373] [2020-12-22 05:56:44,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:44,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:44,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022878578] [2020-12-22 05:56:44,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:44,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:44,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:44,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:44,894 INFO L87 Difference]: Start difference. First operand 8563 states and 16088 transitions. Second operand 4 states. [2020-12-22 05:56:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:51,700 INFO L93 Difference]: Finished difference Result 22653 states and 42785 transitions. [2020-12-22 05:56:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:56:51,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 05:56:51,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:51,727 INFO L225 Difference]: With dead ends: 22653 [2020-12-22 05:56:51,727 INFO L226 Difference]: Without dead ends: 14123 [2020-12-22 05:56:51,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14123 states. [2020-12-22 05:56:52,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14123 to 8563. [2020-12-22 05:56:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-12-22 05:56:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 16068 transitions. [2020-12-22 05:56:52,123 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 16068 transitions. Word has length 59 [2020-12-22 05:56:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:52,123 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 16068 transitions. [2020-12-22 05:56:52,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 16068 transitions. [2020-12-22 05:56:52,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:56:52,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:52,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:52,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:56:52,126 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:52,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:52,127 INFO L82 PathProgramCache]: Analyzing trace with hash 39466401, now seen corresponding path program 1 times [2020-12-22 05:56:52,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:52,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006409385] [2020-12-22 05:56:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:52,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006409385] [2020-12-22 05:56:52,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:52,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:52,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705049035] [2020-12-22 05:56:52,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:52,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:52,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:52,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:52,209 INFO L87 Difference]: Start difference. First operand 8563 states and 16068 transitions. Second operand 4 states. [2020-12-22 05:56:58,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:58,655 INFO L93 Difference]: Finished difference Result 22653 states and 42746 transitions. [2020-12-22 05:56:58,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:56:58,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:56:58,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:58,672 INFO L225 Difference]: With dead ends: 22653 [2020-12-22 05:56:58,673 INFO L226 Difference]: Without dead ends: 14123 [2020-12-22 05:56:58,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14123 states. [2020-12-22 05:56:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14123 to 8563. [2020-12-22 05:56:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-12-22 05:56:59,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 16048 transitions. [2020-12-22 05:56:59,142 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 16048 transitions. Word has length 62 [2020-12-22 05:56:59,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:59,142 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 16048 transitions. [2020-12-22 05:56:59,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:59,143 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 16048 transitions. [2020-12-22 05:56:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 05:56:59,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:59,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:59,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:56:59,146 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:59,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1093363127, now seen corresponding path program 1 times [2020-12-22 05:56:59,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:59,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778893128] [2020-12-22 05:56:59,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:59,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778893128] [2020-12-22 05:56:59,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:59,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:59,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848084895] [2020-12-22 05:56:59,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:59,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:59,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:59,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:59,233 INFO L87 Difference]: Start difference. First operand 8563 states and 16048 transitions. Second operand 4 states. [2020-12-22 05:57:05,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:05,592 INFO L93 Difference]: Finished difference Result 22653 states and 42707 transitions. [2020-12-22 05:57:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:57:05,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 05:57:05,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:05,609 INFO L225 Difference]: With dead ends: 22653 [2020-12-22 05:57:05,609 INFO L226 Difference]: Without dead ends: 14123 [2020-12-22 05:57:05,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14123 states. [2020-12-22 05:57:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14123 to 8563. [2020-12-22 05:57:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-12-22 05:57:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 16028 transitions. [2020-12-22 05:57:06,102 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 16028 transitions. Word has length 65 [2020-12-22 05:57:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:06,102 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 16028 transitions. [2020-12-22 05:57:06,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:06,103 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 16028 transitions. [2020-12-22 05:57:06,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:57:06,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:06,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:06,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:57:06,107 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:06,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:06,107 INFO L82 PathProgramCache]: Analyzing trace with hash -698661370, now seen corresponding path program 1 times [2020-12-22 05:57:06,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:06,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233101017] [2020-12-22 05:57:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:06,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233101017] [2020-12-22 05:57:06,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:06,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:57:06,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037087134] [2020-12-22 05:57:06,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:06,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:06,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:06,172 INFO L87 Difference]: Start difference. First operand 8563 states and 16028 transitions. Second operand 3 states. [2020-12-22 05:57:06,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:06,587 INFO L93 Difference]: Finished difference Result 16673 states and 31074 transitions. [2020-12-22 05:57:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:06,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 05:57:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:06,601 INFO L225 Difference]: With dead ends: 16673 [2020-12-22 05:57:06,601 INFO L226 Difference]: Without dead ends: 8997 [2020-12-22 05:57:06,610 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 05:57:06,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8997 states. [2020-12-22 05:57:06,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8997 to 8987. [2020-12-22 05:57:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8987 states. [2020-12-22 05:57:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8987 states to 8987 states and 16692 transitions. [2020-12-22 05:57:06,940 INFO L78 Accepts]: Start accepts. Automaton has 8987 states and 16692 transitions. Word has length 68 [2020-12-22 05:57:06,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:06,940 INFO L481 AbstractCegarLoop]: Abstraction has 8987 states and 16692 transitions. [2020-12-22 05:57:06,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:06,941 INFO L276 IsEmpty]: Start isEmpty. Operand 8987 states and 16692 transitions. [2020-12-22 05:57:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:57:06,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:06,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:06,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:57:06,944 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:06,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1400261244, now seen corresponding path program 1 times [2020-12-22 05:57:06,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:06,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052148312] [2020-12-22 05:57:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:07,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052148312] [2020-12-22 05:57:07,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:07,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:57:07,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859937769] [2020-12-22 05:57:07,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:07,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:07,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:07,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:07,086 INFO L87 Difference]: Start difference. First operand 8987 states and 16692 transitions. Second operand 3 states. [2020-12-22 05:57:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:10,504 INFO L93 Difference]: Finished difference Result 21668 states and 40261 transitions. [2020-12-22 05:57:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:10,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 05:57:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:10,519 INFO L225 Difference]: With dead ends: 21668 [2020-12-22 05:57:10,520 INFO L226 Difference]: Without dead ends: 13677 [2020-12-22 05:57:10,526 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 05:57:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13677 states. [2020-12-22 05:57:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13677 to 13631. [2020-12-22 05:57:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13631 states. [2020-12-22 05:57:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13631 states to 13631 states and 24988 transitions. [2020-12-22 05:57:11,033 INFO L78 Accepts]: Start accepts. Automaton has 13631 states and 24988 transitions. Word has length 68 [2020-12-22 05:57:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:11,033 INFO L481 AbstractCegarLoop]: Abstraction has 13631 states and 24988 transitions. [2020-12-22 05:57:11,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 13631 states and 24988 transitions. [2020-12-22 05:57:11,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:57:11,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:11,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:11,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:57:11,036 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:11,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:11,036 INFO L82 PathProgramCache]: Analyzing trace with hash 188086658, now seen corresponding path program 1 times [2020-12-22 05:57:11,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:11,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665595473] [2020-12-22 05:57:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:11,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665595473] [2020-12-22 05:57:11,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:11,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:11,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830723533] [2020-12-22 05:57:11,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:11,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:11,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:11,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:11,112 INFO L87 Difference]: Start difference. First operand 13631 states and 24988 transitions. Second operand 5 states. [2020-12-22 05:57:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:13,315 INFO L93 Difference]: Finished difference Result 44608 states and 82053 transitions. [2020-12-22 05:57:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:57:13,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 05:57:13,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:13,505 INFO L225 Difference]: With dead ends: 44608 [2020-12-22 05:57:13,505 INFO L226 Difference]: Without dead ends: 37540 [2020-12-22 05:57:13,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:57:13,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37540 states. [2020-12-22 05:57:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37540 to 13631. [2020-12-22 05:57:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13631 states. [2020-12-22 05:57:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13631 states to 13631 states and 24979 transitions. [2020-12-22 05:57:14,232 INFO L78 Accepts]: Start accepts. Automaton has 13631 states and 24979 transitions. Word has length 68 [2020-12-22 05:57:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:14,233 INFO L481 AbstractCegarLoop]: Abstraction has 13631 states and 24979 transitions. [2020-12-22 05:57:14,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 13631 states and 24979 transitions. [2020-12-22 05:57:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 05:57:14,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:14,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:14,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:57:14,241 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1027393234, now seen corresponding path program 1 times [2020-12-22 05:57:14,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:14,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62176037] [2020-12-22 05:57:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:14,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62176037] [2020-12-22 05:57:14,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:14,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:14,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860852091] [2020-12-22 05:57:14,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:14,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:14,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:14,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:14,306 INFO L87 Difference]: Start difference. First operand 13631 states and 24979 transitions. Second operand 4 states. [2020-12-22 05:57:15,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:15,295 INFO L93 Difference]: Finished difference Result 31276 states and 57127 transitions. [2020-12-22 05:57:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:15,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-12-22 05:57:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:15,316 INFO L225 Difference]: With dead ends: 31276 [2020-12-22 05:57:15,317 INFO L226 Difference]: Without dead ends: 19001 [2020-12-22 05:57:15,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19001 states. [2020-12-22 05:57:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19001 to 13655. [2020-12-22 05:57:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13655 states. [2020-12-22 05:57:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13655 states to 13655 states and 25003 transitions. [2020-12-22 05:57:15,864 INFO L78 Accepts]: Start accepts. Automaton has 13655 states and 25003 transitions. Word has length 92 [2020-12-22 05:57:15,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:15,865 INFO L481 AbstractCegarLoop]: Abstraction has 13655 states and 25003 transitions. [2020-12-22 05:57:15,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 13655 states and 25003 transitions. [2020-12-22 05:57:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 05:57:15,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:15,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:15,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:57:15,868 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:15,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:15,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1858945447, now seen corresponding path program 1 times [2020-12-22 05:57:15,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:15,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218268172] [2020-12-22 05:57:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:15,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218268172] [2020-12-22 05:57:15,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:15,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:15,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219158640] [2020-12-22 05:57:15,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:15,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:15,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:15,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:15,974 INFO L87 Difference]: Start difference. First operand 13655 states and 25003 transitions. Second operand 5 states. [2020-12-22 05:57:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:19,546 INFO L93 Difference]: Finished difference Result 30055 states and 54982 transitions. [2020-12-22 05:57:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:19,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-12-22 05:57:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:19,566 INFO L225 Difference]: With dead ends: 30055 [2020-12-22 05:57:19,566 INFO L226 Difference]: Without dead ends: 18326 [2020-12-22 05:57:19,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:57:19,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18326 states. [2020-12-22 05:57:20,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18326 to 13655. [2020-12-22 05:57:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13655 states. [2020-12-22 05:57:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13655 states to 13655 states and 24778 transitions. [2020-12-22 05:57:20,089 INFO L78 Accepts]: Start accepts. Automaton has 13655 states and 24778 transitions. Word has length 95 [2020-12-22 05:57:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:20,090 INFO L481 AbstractCegarLoop]: Abstraction has 13655 states and 24778 transitions. [2020-12-22 05:57:20,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand 13655 states and 24778 transitions. [2020-12-22 05:57:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 05:57:20,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:20,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:20,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:57:20,093 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:20,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2125735600, now seen corresponding path program 1 times [2020-12-22 05:57:20,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:20,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678952307] [2020-12-22 05:57:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:20,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678952307] [2020-12-22 05:57:20,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:20,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:20,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162456153] [2020-12-22 05:57:20,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:20,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:20,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:20,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:20,157 INFO L87 Difference]: Start difference. First operand 13655 states and 24778 transitions. Second operand 3 states. [2020-12-22 05:57:23,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:23,120 INFO L93 Difference]: Finished difference Result 34490 states and 62483 transitions. [2020-12-22 05:57:23,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:23,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-22 05:57:23,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:23,148 INFO L225 Difference]: With dead ends: 34490 [2020-12-22 05:57:23,148 INFO L226 Difference]: Without dead ends: 22945 [2020-12-22 05:57:23,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22945 states. [2020-12-22 05:57:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22945 to 13520. [2020-12-22 05:57:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13520 states. [2020-12-22 05:57:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 24418 transitions. [2020-12-22 05:57:23,872 INFO L78 Accepts]: Start accepts. Automaton has 13520 states and 24418 transitions. Word has length 100 [2020-12-22 05:57:23,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:23,872 INFO L481 AbstractCegarLoop]: Abstraction has 13520 states and 24418 transitions. [2020-12-22 05:57:23,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 13520 states and 24418 transitions. [2020-12-22 05:57:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 05:57:23,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:23,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:23,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:57:23,877 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:23,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:23,878 INFO L82 PathProgramCache]: Analyzing trace with hash -399139257, now seen corresponding path program 1 times [2020-12-22 05:57:23,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:23,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909104289] [2020-12-22 05:57:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:23,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909104289] [2020-12-22 05:57:23,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:23,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:23,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079278033] [2020-12-22 05:57:23,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:23,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:23,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:23,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:23,940 INFO L87 Difference]: Start difference. First operand 13520 states and 24418 transitions. Second operand 3 states. [2020-12-22 05:57:26,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:26,767 INFO L93 Difference]: Finished difference Result 33421 states and 60285 transitions. [2020-12-22 05:57:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:26,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-22 05:57:26,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:26,796 INFO L225 Difference]: With dead ends: 33421 [2020-12-22 05:57:26,796 INFO L226 Difference]: Without dead ends: 22207 [2020-12-22 05:57:26,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22207 states. [2020-12-22 05:57:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22207 to 13430. [2020-12-22 05:57:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13430 states. [2020-12-22 05:57:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13430 states to 13430 states and 24103 transitions. [2020-12-22 05:57:27,565 INFO L78 Accepts]: Start accepts. Automaton has 13430 states and 24103 transitions. Word has length 101 [2020-12-22 05:57:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:27,565 INFO L481 AbstractCegarLoop]: Abstraction has 13430 states and 24103 transitions. [2020-12-22 05:57:27,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 13430 states and 24103 transitions. [2020-12-22 05:57:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 05:57:27,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:27,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:27,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:57:27,569 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:27,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:27,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1992616542, now seen corresponding path program 1 times [2020-12-22 05:57:27,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:27,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979540205] [2020-12-22 05:57:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:27,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979540205] [2020-12-22 05:57:27,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:27,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:27,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261098301] [2020-12-22 05:57:27,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:27,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:27,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:27,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:27,657 INFO L87 Difference]: Start difference. First operand 13430 states and 24103 transitions. Second operand 4 states. [2020-12-22 05:57:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:42,271 INFO L93 Difference]: Finished difference Result 42545 states and 76708 transitions. [2020-12-22 05:57:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:42,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-12-22 05:57:42,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:42,314 INFO L225 Difference]: With dead ends: 42545 [2020-12-22 05:57:42,314 INFO L226 Difference]: Without dead ends: 29474 [2020-12-22 05:57:42,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:42,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29474 states. [2020-12-22 05:57:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29474 to 13430. [2020-12-22 05:57:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13430 states. [2020-12-22 05:57:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13430 states to 13430 states and 23674 transitions. [2020-12-22 05:57:43,188 INFO L78 Accepts]: Start accepts. Automaton has 13430 states and 23674 transitions. Word has length 103 [2020-12-22 05:57:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:43,188 INFO L481 AbstractCegarLoop]: Abstraction has 13430 states and 23674 transitions. [2020-12-22 05:57:43,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13430 states and 23674 transitions. [2020-12-22 05:57:43,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 05:57:43,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:43,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:43,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:57:43,192 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:43,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:43,193 INFO L82 PathProgramCache]: Analyzing trace with hash 223380623, now seen corresponding path program 1 times [2020-12-22 05:57:43,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:43,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12037815] [2020-12-22 05:57:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:43,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12037815] [2020-12-22 05:57:43,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:43,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:43,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800737416] [2020-12-22 05:57:43,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:43,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:43,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:43,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:43,268 INFO L87 Difference]: Start difference. First operand 13430 states and 23674 transitions. Second operand 4 states. [2020-12-22 05:57:57,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:57,027 INFO L93 Difference]: Finished difference Result 40637 states and 71957 transitions. [2020-12-22 05:57:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:57,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 05:57:57,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:57,066 INFO L225 Difference]: With dead ends: 40637 [2020-12-22 05:57:57,067 INFO L226 Difference]: Without dead ends: 27530 [2020-12-22 05:57:57,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27530 states. [2020-12-22 05:57:57,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27530 to 13430. [2020-12-22 05:57:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13430 states. [2020-12-22 05:57:57,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13430 states to 13430 states and 23200 transitions. [2020-12-22 05:57:57,879 INFO L78 Accepts]: Start accepts. Automaton has 13430 states and 23200 transitions. Word has length 105 [2020-12-22 05:57:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:57,879 INFO L481 AbstractCegarLoop]: Abstraction has 13430 states and 23200 transitions. [2020-12-22 05:57:57,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 13430 states and 23200 transitions. [2020-12-22 05:57:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 05:57:57,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:57,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:57,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:57:57,885 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:57,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:57,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1761487288, now seen corresponding path program 1 times [2020-12-22 05:57:57,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:57,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772248377] [2020-12-22 05:57:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:57,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772248377] [2020-12-22 05:57:57,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:57,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:57,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644133111] [2020-12-22 05:57:57,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:57,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:57,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:57,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:57,977 INFO L87 Difference]: Start difference. First operand 13430 states and 23200 transitions. Second operand 4 states. [2020-12-22 05:58:10,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:10,659 INFO L93 Difference]: Finished difference Result 40007 states and 69477 transitions. [2020-12-22 05:58:10,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:10,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-22 05:58:10,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:10,701 INFO L225 Difference]: With dead ends: 40007 [2020-12-22 05:58:10,701 INFO L226 Difference]: Without dead ends: 26900 [2020-12-22 05:58:10,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:10,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26900 states. [2020-12-22 05:58:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26900 to 13430. [2020-12-22 05:58:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13430 states. [2020-12-22 05:58:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13430 states to 13430 states and 22726 transitions. [2020-12-22 05:58:11,603 INFO L78 Accepts]: Start accepts. Automaton has 13430 states and 22726 transitions. Word has length 107 [2020-12-22 05:58:11,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:11,604 INFO L481 AbstractCegarLoop]: Abstraction has 13430 states and 22726 transitions. [2020-12-22 05:58:11,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand 13430 states and 22726 transitions. [2020-12-22 05:58:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 05:58:11,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:11,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:11,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 05:58:11,608 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:11,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:11,609 INFO L82 PathProgramCache]: Analyzing trace with hash 157811855, now seen corresponding path program 1 times [2020-12-22 05:58:11,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:11,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882829372] [2020-12-22 05:58:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:11,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882829372] [2020-12-22 05:58:11,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:11,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:11,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659831720] [2020-12-22 05:58:11,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:11,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:11,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:11,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:11,680 INFO L87 Difference]: Start difference. First operand 13430 states and 22726 transitions. Second operand 4 states. [2020-12-22 05:58:15,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:15,450 INFO L93 Difference]: Finished difference Result 38775 states and 65682 transitions. [2020-12-22 05:58:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:15,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-12-22 05:58:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:15,485 INFO L225 Difference]: With dead ends: 38775 [2020-12-22 05:58:15,485 INFO L226 Difference]: Without dead ends: 27055 [2020-12-22 05:58:15,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27055 states. [2020-12-22 05:58:16,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27055 to 13430. [2020-12-22 05:58:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13430 states. [2020-12-22 05:58:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13430 states to 13430 states and 22591 transitions. [2020-12-22 05:58:16,366 INFO L78 Accepts]: Start accepts. Automaton has 13430 states and 22591 transitions. Word has length 109 [2020-12-22 05:58:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:16,366 INFO L481 AbstractCegarLoop]: Abstraction has 13430 states and 22591 transitions. [2020-12-22 05:58:16,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 13430 states and 22591 transitions. [2020-12-22 05:58:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 05:58:16,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:16,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:16,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 05:58:16,371 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1499851980, now seen corresponding path program 1 times [2020-12-22 05:58:16,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:16,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578564218] [2020-12-22 05:58:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:16,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578564218] [2020-12-22 05:58:16,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:16,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:16,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724982569] [2020-12-22 05:58:16,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:16,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:16,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:16,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:16,448 INFO L87 Difference]: Start difference. First operand 13430 states and 22591 transitions. Second operand 5 states. [2020-12-22 05:58:19,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:19,129 INFO L93 Difference]: Finished difference Result 39160 states and 66414 transitions. [2020-12-22 05:58:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:19,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-12-22 05:58:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:19,165 INFO L225 Difference]: With dead ends: 39160 [2020-12-22 05:58:19,165 INFO L226 Difference]: Without dead ends: 27598 [2020-12-22 05:58:19,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:19,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27598 states. [2020-12-22 05:58:20,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27598 to 16742. [2020-12-22 05:58:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16742 states. [2020-12-22 05:58:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16742 states to 16742 states and 28783 transitions. [2020-12-22 05:58:20,165 INFO L78 Accepts]: Start accepts. Automaton has 16742 states and 28783 transitions. Word has length 109 [2020-12-22 05:58:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:20,166 INFO L481 AbstractCegarLoop]: Abstraction has 16742 states and 28783 transitions. [2020-12-22 05:58:20,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 16742 states and 28783 transitions. [2020-12-22 05:58:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 05:58:20,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:20,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:20,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 05:58:20,171 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:20,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:20,172 INFO L82 PathProgramCache]: Analyzing trace with hash 673301056, now seen corresponding path program 1 times [2020-12-22 05:58:20,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:20,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116270912] [2020-12-22 05:58:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:20,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116270912] [2020-12-22 05:58:20,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:20,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:58:20,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410385326] [2020-12-22 05:58:20,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:58:20,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:20,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:58:20,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:58:20,288 INFO L87 Difference]: Start difference. First operand 16742 states and 28783 transitions. Second operand 9 states. [2020-12-22 05:59:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:10,197 INFO L93 Difference]: Finished difference Result 335515 states and 585877 transitions. [2020-12-22 05:59:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-22 05:59:10,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 110 [2020-12-22 05:59:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:10,872 INFO L225 Difference]: With dead ends: 335515 [2020-12-22 05:59:10,873 INFO L226 Difference]: Without dead ends: 264231 [2020-12-22 05:59:11,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=450, Invalid=2306, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 05:59:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264231 states. [2020-12-22 05:59:14,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264231 to 25747. [2020-12-22 05:59:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25747 states. [2020-12-22 05:59:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25747 states to 25747 states and 44171 transitions. [2020-12-22 05:59:14,438 INFO L78 Accepts]: Start accepts. Automaton has 25747 states and 44171 transitions. Word has length 110 [2020-12-22 05:59:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:14,438 INFO L481 AbstractCegarLoop]: Abstraction has 25747 states and 44171 transitions. [2020-12-22 05:59:14,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:59:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 25747 states and 44171 transitions. [2020-12-22 05:59:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 05:59:14,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:14,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:14,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 05:59:14,447 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:14,448 INFO L82 PathProgramCache]: Analyzing trace with hash -335941606, now seen corresponding path program 1 times [2020-12-22 05:59:14,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:14,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484174587] [2020-12-22 05:59:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:14,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484174587] [2020-12-22 05:59:14,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:14,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:14,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124698120] [2020-12-22 05:59:14,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:14,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:14,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:14,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:14,542 INFO L87 Difference]: Start difference. First operand 25747 states and 44171 transitions. Second operand 5 states. [2020-12-22 05:59:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:16,064 INFO L93 Difference]: Finished difference Result 42314 states and 72580 transitions. [2020-12-22 05:59:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:16,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-12-22 05:59:16,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:16,082 INFO L225 Difference]: With dead ends: 42314 [2020-12-22 05:59:16,082 INFO L226 Difference]: Without dead ends: 16528 [2020-12-22 05:59:16,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16528 states. [2020-12-22 05:59:17,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16528 to 16528. [2020-12-22 05:59:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16528 states. [2020-12-22 05:59:17,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16528 states to 16528 states and 28349 transitions. [2020-12-22 05:59:17,160 INFO L78 Accepts]: Start accepts. Automaton has 16528 states and 28349 transitions. Word has length 113 [2020-12-22 05:59:17,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:17,160 INFO L481 AbstractCegarLoop]: Abstraction has 16528 states and 28349 transitions. [2020-12-22 05:59:17,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:17,160 INFO L276 IsEmpty]: Start isEmpty. Operand 16528 states and 28349 transitions. [2020-12-22 05:59:17,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-12-22 05:59:17,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:17,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:17,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 05:59:17,176 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash 867423595, now seen corresponding path program 1 times [2020-12-22 05:59:17,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:17,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99314332] [2020-12-22 05:59:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:17,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99314332] [2020-12-22 05:59:17,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:17,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:59:17,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610944572] [2020-12-22 05:59:17,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:59:17,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:17,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:59:17,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:17,317 INFO L87 Difference]: Start difference. First operand 16528 states and 28349 transitions. Second operand 9 states. [2020-12-22 05:59:36,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:36,935 INFO L93 Difference]: Finished difference Result 82620 states and 143024 transitions. [2020-12-22 05:59:36,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-22 05:59:36,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 246 [2020-12-22 05:59:36,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:37,016 INFO L225 Difference]: With dead ends: 82620 [2020-12-22 05:59:37,016 INFO L226 Difference]: Without dead ends: 73118 [2020-12-22 05:59:37,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=426, Invalid=2124, Unknown=0, NotChecked=0, Total=2550 [2020-12-22 05:59:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73118 states. [2020-12-22 05:59:38,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73118 to 16542. [2020-12-22 05:59:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16542 states. [2020-12-22 05:59:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16542 states to 16542 states and 28353 transitions. [2020-12-22 05:59:38,676 INFO L78 Accepts]: Start accepts. Automaton has 16542 states and 28353 transitions. Word has length 246 [2020-12-22 05:59:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:38,676 INFO L481 AbstractCegarLoop]: Abstraction has 16542 states and 28353 transitions. [2020-12-22 05:59:38,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:59:38,676 INFO L276 IsEmpty]: Start isEmpty. Operand 16542 states and 28353 transitions. [2020-12-22 05:59:38,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-12-22 05:59:38,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:38,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:38,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 05:59:38,693 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:38,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:38,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1398295869, now seen corresponding path program 1 times [2020-12-22 05:59:38,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:38,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105942196] [2020-12-22 05:59:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:38,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105942196] [2020-12-22 05:59:38,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:38,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:59:38,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774320885] [2020-12-22 05:59:38,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:38,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:38,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:38,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:38,932 INFO L87 Difference]: Start difference. First operand 16542 states and 28353 transitions. Second operand 3 states. [2020-12-22 05:59:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:41,334 INFO L93 Difference]: Finished difference Result 42693 states and 72999 transitions. [2020-12-22 05:59:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:41,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-12-22 05:59:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:41,367 INFO L225 Difference]: With dead ends: 42693 [2020-12-22 05:59:41,367 INFO L226 Difference]: Without dead ends: 31064 [2020-12-22 05:59:41,379 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 05:59:41,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31064 states. [2020-12-22 05:59:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31064 to 31060. [2020-12-22 05:59:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31060 states. [2020-12-22 05:59:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31060 states to 31060 states and 53220 transitions. [2020-12-22 05:59:43,482 INFO L78 Accepts]: Start accepts. Automaton has 31060 states and 53220 transitions. Word has length 264 [2020-12-22 05:59:43,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:43,482 INFO L481 AbstractCegarLoop]: Abstraction has 31060 states and 53220 transitions. [2020-12-22 05:59:43,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:43,482 INFO L276 IsEmpty]: Start isEmpty. Operand 31060 states and 53220 transitions. [2020-12-22 05:59:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-12-22 05:59:43,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:43,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:43,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 05:59:43,503 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:43,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:43,503 INFO L82 PathProgramCache]: Analyzing trace with hash 833444416, now seen corresponding path program 1 times [2020-12-22 05:59:43,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:43,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790611192] [2020-12-22 05:59:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:43,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790611192] [2020-12-22 05:59:43,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:43,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:59:43,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258665105] [2020-12-22 05:59:43,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:43,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:43,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:43,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:43,767 INFO L87 Difference]: Start difference. First operand 31060 states and 53220 transitions. Second operand 3 states.