/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:02:36,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:02:36,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:02:37,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:02:37,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:02:37,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:02:37,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:02:37,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:02:37,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:02:37,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:02:37,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:02:37,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:02:37,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:02:37,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:02:37,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:02:37,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:02:37,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:02:37,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:02:37,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:02:37,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:02:37,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:02:37,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:02:37,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:02:37,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:02:37,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:02:37,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:02:37,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:02:37,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:02:37,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:02:37,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:02:37,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:02:37,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:02:37,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:02:37,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:02:37,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:02:37,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:02:37,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:02:37,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:02:37,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:02:37,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:02:37,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:02:37,163 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:02:37,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:02:37,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:02:37,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:02:37,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:02:37,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:02:37,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:02:37,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:02:37,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:02:37,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:02:37,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:02:37,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:02:37,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:02:37,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:02:37,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:02:37,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:02:37,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:02:37,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:02:37,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:02:37,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:02:37,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:02:37,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:02:37,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:02:37,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:02:37,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:02:37,571 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:02:37,572 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:02:37,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c [2020-12-22 06:02:37,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbaebd7d/a801f86c914d4755ba626ef3a39087e3/FLAGd229fbb7a [2020-12-22 06:02:38,591 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:02:38,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c [2020-12-22 06:02:38,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbaebd7d/a801f86c914d4755ba626ef3a39087e3/FLAGd229fbb7a [2020-12-22 06:02:38,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbaebd7d/a801f86c914d4755ba626ef3a39087e3 [2020-12-22 06:02:38,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:02:38,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:02:38,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:02:38,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:02:38,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:02:38,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:02:38" (1/1) ... [2020-12-22 06:02:38,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79fa5761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:38, skipping insertion in model container [2020-12-22 06:02:38,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:02:38" (1/1) ... [2020-12-22 06:02:38,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:02:38,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:02:39,047 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c[3992,4005] [2020-12-22 06:02:39,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:02:39,494 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:02:39,548 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c[3992,4005] [2020-12-22 06:02:39,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:02:39,772 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:02:39,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39 WrapperNode [2020-12-22 06:02:39,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:02:39,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:02:39,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:02:39,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:02:39,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (1/1) ... [2020-12-22 06:02:39,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (1/1) ... [2020-12-22 06:02:40,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:02:40,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:02:40,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:02:40,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:02:40,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (1/1) ... [2020-12-22 06:02:40,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (1/1) ... [2020-12-22 06:02:40,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (1/1) ... [2020-12-22 06:02:40,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (1/1) ... [2020-12-22 06:02:40,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (1/1) ... [2020-12-22 06:02:41,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (1/1) ... [2020-12-22 06:02:41,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (1/1) ... [2020-12-22 06:02:41,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:02:41,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:02:41,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:02:41,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:02:41,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:02:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:02:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:02:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:02:41,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:02:53,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:02:53,242 INFO L299 CfgBuilder]: Removed 1673 assume(true) statements. [2020-12-22 06:02:53,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:02:53 BoogieIcfgContainer [2020-12-22 06:02:53,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:02:53,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:02:53,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:02:53,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:02:53,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:02:38" (1/3) ... [2020-12-22 06:02:53,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327e7077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:02:53, skipping insertion in model container [2020-12-22 06:02:53,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:39" (2/3) ... [2020-12-22 06:02:53,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327e7077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:02:53, skipping insertion in model container [2020-12-22 06:02:53,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:02:53" (3/3) ... [2020-12-22 06:02:53,265 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product32.cil.c [2020-12-22 06:02:53,272 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:02:53,281 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:02:53,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:02:53,352 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:02:53,352 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:02:53,352 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:02:53,353 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:02:53,353 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:02:53,353 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:02:53,353 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:02:53,353 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:02:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 7127 states. [2020-12-22 06:02:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:02:53,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:53,478 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] [2020-12-22 06:02:53,478 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 06:02:53,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:53,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1011610038, now seen corresponding path program 1 times [2020-12-22 06:02:53,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:53,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717570306] [2020-12-22 06:02:53,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:53,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717570306] [2020-12-22 06:02:53,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:53,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:53,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35508819] [2020-12-22 06:02:53,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:53,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:53,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:53,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:53,971 INFO L87 Difference]: Start difference. First operand 7127 states. Second operand 3 states. [2020-12-22 06:02:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:54,553 INFO L93 Difference]: Finished difference Result 21301 states and 40151 transitions. [2020-12-22 06:02:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:54,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 06:02:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:54,693 INFO L225 Difference]: With dead ends: 21301 [2020-12-22 06:02:54,694 INFO L226 Difference]: Without dead ends: 14179 [2020-12-22 06:02:54,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:54,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14179 states. [2020-12-22 06:02:55,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14179 to 7123. [2020-12-22 06:02:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7123 states. [2020-12-22 06:02:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7123 states to 7123 states and 13414 transitions. [2020-12-22 06:02:55,517 INFO L78 Accepts]: Start accepts. Automaton has 7123 states and 13414 transitions. Word has length 36 [2020-12-22 06:02:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:55,517 INFO L481 AbstractCegarLoop]: Abstraction has 7123 states and 13414 transitions. [2020-12-22 06:02:55,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 7123 states and 13414 transitions. [2020-12-22 06:02:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:02:55,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:55,529 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] [2020-12-22 06:02:55,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:02:55,531 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 06:02:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:55,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1236429624, now seen corresponding path program 1 times [2020-12-22 06:02:55,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:55,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098726899] [2020-12-22 06:02:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:55,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098726899] [2020-12-22 06:02:55,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:55,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:55,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118413015] [2020-12-22 06:02:55,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:55,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:55,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:55,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:55,760 INFO L87 Difference]: Start difference. First operand 7123 states and 13414 transitions. Second operand 6 states. [2020-12-22 06:02:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:57,274 INFO L93 Difference]: Finished difference Result 28267 states and 53253 transitions. [2020-12-22 06:02:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:02:57,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-12-22 06:02:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:57,385 INFO L225 Difference]: With dead ends: 28267 [2020-12-22 06:02:57,385 INFO L226 Difference]: Without dead ends: 21187 [2020-12-22 06:02:57,403 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 06:02:57,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21187 states. [2020-12-22 06:02:57,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21187 to 7119. [2020-12-22 06:02:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7119 states. [2020-12-22 06:02:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7119 states to 7119 states and 13403 transitions. [2020-12-22 06:02:57,900 INFO L78 Accepts]: Start accepts. Automaton has 7119 states and 13403 transitions. Word has length 43 [2020-12-22 06:02:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:57,900 INFO L481 AbstractCegarLoop]: Abstraction has 7119 states and 13403 transitions. [2020-12-22 06:02:57,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7119 states and 13403 transitions. [2020-12-22 06:02:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:02:57,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:57,905 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] [2020-12-22 06:02:57,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:02:57,907 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 06:02:57,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:57,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1420108859, now seen corresponding path program 1 times [2020-12-22 06:02:57,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:57,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500084218] [2020-12-22 06:02:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:58,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500084218] [2020-12-22 06:02:58,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:58,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:58,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842343885] [2020-12-22 06:02:58,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:58,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:58,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:58,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:58,047 INFO L87 Difference]: Start difference. First operand 7119 states and 13403 transitions. Second operand 4 states. [2020-12-22 06:02:58,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:58,926 INFO L93 Difference]: Finished difference Result 21245 states and 40018 transitions. [2020-12-22 06:02:58,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:58,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 06:02:58,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:58,971 INFO L225 Difference]: With dead ends: 21245 [2020-12-22 06:02:58,972 INFO L226 Difference]: Without dead ends: 14169 [2020-12-22 06:02:58,988 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 06:02:59,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14169 states. [2020-12-22 06:02:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14169 to 7119. [2020-12-22 06:02:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7119 states. [2020-12-22 06:02:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7119 states to 7119 states and 13394 transitions. [2020-12-22 06:02:59,494 INFO L78 Accepts]: Start accepts. Automaton has 7119 states and 13394 transitions. Word has length 45 [2020-12-22 06:02:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:59,502 INFO L481 AbstractCegarLoop]: Abstraction has 7119 states and 13394 transitions. [2020-12-22 06:02:59,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:59,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7119 states and 13394 transitions. [2020-12-22 06:02:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:02:59,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:59,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:59,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:02:59,505 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 06:02:59,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:59,505 INFO L82 PathProgramCache]: Analyzing trace with hash 480711314, now seen corresponding path program 1 times [2020-12-22 06:02:59,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:59,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100633974] [2020-12-22 06:02:59,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:59,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100633974] [2020-12-22 06:02:59,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:59,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:59,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134514519] [2020-12-22 06:02:59,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:59,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:59,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:59,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:59,622 INFO L87 Difference]: Start difference. First operand 7119 states and 13394 transitions. Second operand 4 states. [2020-12-22 06:03:00,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:00,639 INFO L93 Difference]: Finished difference Result 21245 states and 40000 transitions. [2020-12-22 06:03:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:00,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:03:00,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:00,678 INFO L225 Difference]: With dead ends: 21245 [2020-12-22 06:03:00,679 INFO L226 Difference]: Without dead ends: 14169 [2020-12-22 06:03:00,691 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 06:03:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14169 states. [2020-12-22 06:03:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14169 to 7119. [2020-12-22 06:03:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7119 states. [2020-12-22 06:03:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7119 states to 7119 states and 13385 transitions. [2020-12-22 06:03:01,108 INFO L78 Accepts]: Start accepts. Automaton has 7119 states and 13385 transitions. Word has length 47 [2020-12-22 06:03:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:01,109 INFO L481 AbstractCegarLoop]: Abstraction has 7119 states and 13385 transitions. [2020-12-22 06:03:01,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 7119 states and 13385 transitions. [2020-12-22 06:03:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:03:01,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:01,110 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 06:03:01,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:03:01,111 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 06:03:01,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:01,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1825592261, now seen corresponding path program 1 times [2020-12-22 06:03:01,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:01,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795341556] [2020-12-22 06:03:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:01,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795341556] [2020-12-22 06:03:01,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:01,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:01,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922961022] [2020-12-22 06:03:01,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:01,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:01,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:01,217 INFO L87 Difference]: Start difference. First operand 7119 states and 13385 transitions. Second operand 4 states. [2020-12-22 06:03:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:02,948 INFO L93 Difference]: Finished difference Result 35285 states and 66432 transitions. [2020-12-22 06:03:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:02,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:03:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:03,027 INFO L225 Difference]: With dead ends: 35285 [2020-12-22 06:03:03,027 INFO L226 Difference]: Without dead ends: 28209 [2020-12-22 06:03:03,044 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 06:03:03,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28209 states. [2020-12-22 06:03:03,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28209 to 7119. [2020-12-22 06:03:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7119 states. [2020-12-22 06:03:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7119 states to 7119 states and 13381 transitions. [2020-12-22 06:03:03,574 INFO L78 Accepts]: Start accepts. Automaton has 7119 states and 13381 transitions. Word has length 49 [2020-12-22 06:03:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:03,576 INFO L481 AbstractCegarLoop]: Abstraction has 7119 states and 13381 transitions. [2020-12-22 06:03:03,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7119 states and 13381 transitions. [2020-12-22 06:03:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:03:03,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:03,579 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 06:03:03,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:03:03,581 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 06:03:03,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:03,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1037864891, now seen corresponding path program 1 times [2020-12-22 06:03:03,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:03,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759888385] [2020-12-22 06:03:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:03,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759888385] [2020-12-22 06:03:03,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:03,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:03,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659789987] [2020-12-22 06:03:03,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:03,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:03,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:03,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:03,694 INFO L87 Difference]: Start difference. First operand 7119 states and 13381 transitions. Second operand 4 states. [2020-12-22 06:03:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:04,752 INFO L93 Difference]: Finished difference Result 28244 states and 53167 transitions. [2020-12-22 06:03:04,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:04,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:03:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:04,806 INFO L225 Difference]: With dead ends: 28244 [2020-12-22 06:03:04,807 INFO L226 Difference]: Without dead ends: 21147 [2020-12-22 06:03:04,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21147 states. [2020-12-22 06:03:05,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21147 to 7101. [2020-12-22 06:03:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7101 states. [2020-12-22 06:03:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7101 states to 7101 states and 13350 transitions. [2020-12-22 06:03:05,301 INFO L78 Accepts]: Start accepts. Automaton has 7101 states and 13350 transitions. Word has length 49 [2020-12-22 06:03:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:05,301 INFO L481 AbstractCegarLoop]: Abstraction has 7101 states and 13350 transitions. [2020-12-22 06:03:05,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7101 states and 13350 transitions. [2020-12-22 06:03:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:03:05,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:05,303 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 06:03:05,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:03:05,303 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 06:03:05,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:05,304 INFO L82 PathProgramCache]: Analyzing trace with hash -185680150, now seen corresponding path program 1 times [2020-12-22 06:03:05,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:05,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595605697] [2020-12-22 06:03:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:05,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595605697] [2020-12-22 06:03:05,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:05,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:05,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865922863] [2020-12-22 06:03:05,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:05,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:05,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:05,394 INFO L87 Difference]: Start difference. First operand 7101 states and 13350 transitions. Second operand 4 states. [2020-12-22 06:03:06,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:06,254 INFO L93 Difference]: Finished difference Result 21209 states and 39913 transitions. [2020-12-22 06:03:06,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:06,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 06:03:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:06,279 INFO L225 Difference]: With dead ends: 21209 [2020-12-22 06:03:06,280 INFO L226 Difference]: Without dead ends: 14130 [2020-12-22 06:03:06,292 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 06:03:06,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14130 states. [2020-12-22 06:03:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14130 to 7101. [2020-12-22 06:03:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7101 states. [2020-12-22 06:03:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7101 states to 7101 states and 13344 transitions. [2020-12-22 06:03:06,605 INFO L78 Accepts]: Start accepts. Automaton has 7101 states and 13344 transitions. Word has length 50 [2020-12-22 06:03:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:06,605 INFO L481 AbstractCegarLoop]: Abstraction has 7101 states and 13344 transitions. [2020-12-22 06:03:06,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 7101 states and 13344 transitions. [2020-12-22 06:03:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:03:06,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:06,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:06,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:03:06,607 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 06:03:06,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:06,608 INFO L82 PathProgramCache]: Analyzing trace with hash -651583062, now seen corresponding path program 1 times [2020-12-22 06:03:06,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:06,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526740892] [2020-12-22 06:03:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:06,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526740892] [2020-12-22 06:03:06,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:06,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:06,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655073991] [2020-12-22 06:03:06,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:06,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:06,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:06,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:06,667 INFO L87 Difference]: Start difference. First operand 7101 states and 13344 transitions. Second operand 4 states. [2020-12-22 06:03:07,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:07,389 INFO L93 Difference]: Finished difference Result 21209 states and 39901 transitions. [2020-12-22 06:03:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:07,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:03:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:07,411 INFO L225 Difference]: With dead ends: 21209 [2020-12-22 06:03:07,412 INFO L226 Difference]: Without dead ends: 14130 [2020-12-22 06:03:07,425 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 06:03:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14130 states. [2020-12-22 06:03:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14130 to 7101. [2020-12-22 06:03:07,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7101 states. [2020-12-22 06:03:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7101 states to 7101 states and 13338 transitions. [2020-12-22 06:03:08,003 INFO L78 Accepts]: Start accepts. Automaton has 7101 states and 13338 transitions. Word has length 51 [2020-12-22 06:03:08,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:08,003 INFO L481 AbstractCegarLoop]: Abstraction has 7101 states and 13338 transitions. [2020-12-22 06:03:08,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:08,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7101 states and 13338 transitions. [2020-12-22 06:03:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:03:08,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:08,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:08,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:03:08,005 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 06:03:08,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:08,006 INFO L82 PathProgramCache]: Analyzing trace with hash -455671761, now seen corresponding path program 1 times [2020-12-22 06:03:08,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:08,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668270564] [2020-12-22 06:03:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:08,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668270564] [2020-12-22 06:03:08,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:08,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:03:08,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877134773] [2020-12-22 06:03:08,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:03:08,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:03:08,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:08,140 INFO L87 Difference]: Start difference. First operand 7101 states and 13338 transitions. Second operand 7 states. [2020-12-22 06:03:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:09,965 INFO L93 Difference]: Finished difference Result 35256 states and 66346 transitions. [2020-12-22 06:03:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:09,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-12-22 06:03:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:10,007 INFO L225 Difference]: With dead ends: 35256 [2020-12-22 06:03:10,007 INFO L226 Difference]: Without dead ends: 28183 [2020-12-22 06:03:10,019 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 06:03:10,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28183 states. [2020-12-22 06:03:10,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28183 to 7103. [2020-12-22 06:03:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7103 states. [2020-12-22 06:03:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 13339 transitions. [2020-12-22 06:03:10,577 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 13339 transitions. Word has length 52 [2020-12-22 06:03:10,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:10,724 INFO L481 AbstractCegarLoop]: Abstraction has 7103 states and 13339 transitions. [2020-12-22 06:03:10,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:03:10,724 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 13339 transitions. [2020-12-22 06:03:10,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:03:10,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:10,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:10,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:03:10,726 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 06:03:10,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:10,727 INFO L82 PathProgramCache]: Analyzing trace with hash -77927916, now seen corresponding path program 1 times [2020-12-22 06:03:10,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:10,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619010368] [2020-12-22 06:03:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:10,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619010368] [2020-12-22 06:03:10,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:10,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:03:10,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037780397] [2020-12-22 06:03:10,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:03:10,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:10,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:03:10,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:10,855 INFO L87 Difference]: Start difference. First operand 7103 states and 13339 transitions. Second operand 7 states. [2020-12-22 06:03:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:12,881 INFO L93 Difference]: Finished difference Result 35248 states and 66325 transitions. [2020-12-22 06:03:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:12,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-12-22 06:03:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:12,924 INFO L225 Difference]: With dead ends: 35248 [2020-12-22 06:03:12,924 INFO L226 Difference]: Without dead ends: 28178 [2020-12-22 06:03:12,933 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 06:03:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28178 states. [2020-12-22 06:03:13,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28178 to 7108. [2020-12-22 06:03:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7108 states. [2020-12-22 06:03:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 13347 transitions. [2020-12-22 06:03:13,488 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 13347 transitions. Word has length 54 [2020-12-22 06:03:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:13,488 INFO L481 AbstractCegarLoop]: Abstraction has 7108 states and 13347 transitions. [2020-12-22 06:03:13,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:03:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 13347 transitions. [2020-12-22 06:03:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:03:13,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:13,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:13,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:03:13,490 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 06:03:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash -151818577, now seen corresponding path program 1 times [2020-12-22 06:03:13,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:13,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871251423] [2020-12-22 06:03:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:13,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871251423] [2020-12-22 06:03:13,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:13,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:13,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764629793] [2020-12-22 06:03:13,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:13,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:13,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:13,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:13,571 INFO L87 Difference]: Start difference. First operand 7108 states and 13347 transitions. Second operand 3 states. [2020-12-22 06:03:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:13,979 INFO L93 Difference]: Finished difference Result 14158 states and 26612 transitions. [2020-12-22 06:03:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:13,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:03:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:13,991 INFO L225 Difference]: With dead ends: 14158 [2020-12-22 06:03:13,992 INFO L226 Difference]: Without dead ends: 7087 [2020-12-22 06:03:14,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7087 states. [2020-12-22 06:03:14,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7087 to 7087. [2020-12-22 06:03:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7087 states. [2020-12-22 06:03:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 13311 transitions. [2020-12-22 06:03:14,298 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 13311 transitions. Word has length 56 [2020-12-22 06:03:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:14,298 INFO L481 AbstractCegarLoop]: Abstraction has 7087 states and 13311 transitions. [2020-12-22 06:03:14,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:14,299 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 13311 transitions. [2020-12-22 06:03:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:03:14,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:14,299 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] [2020-12-22 06:03:14,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:03:14,300 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 06:03:14,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:14,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1634971626, now seen corresponding path program 1 times [2020-12-22 06:03:14,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:14,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903841097] [2020-12-22 06:03:14,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:14,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903841097] [2020-12-22 06:03:14,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:14,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:14,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684945858] [2020-12-22 06:03:14,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:14,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:14,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:14,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:14,377 INFO L87 Difference]: Start difference. First operand 7087 states and 13311 transitions. Second operand 5 states. [2020-12-22 06:03:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:14,775 INFO L93 Difference]: Finished difference Result 14107 states and 26534 transitions. [2020-12-22 06:03:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:14,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 06:03:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:14,788 INFO L225 Difference]: With dead ends: 14107 [2020-12-22 06:03:14,788 INFO L226 Difference]: Without dead ends: 7081 [2020-12-22 06:03:14,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2020-12-22 06:03:15,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7081. [2020-12-22 06:03:15,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7081 states. [2020-12-22 06:03:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 13302 transitions. [2020-12-22 06:03:15,062 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 13302 transitions. Word has length 58 [2020-12-22 06:03:15,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:15,062 INFO L481 AbstractCegarLoop]: Abstraction has 7081 states and 13302 transitions. [2020-12-22 06:03:15,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:15,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 13302 transitions. [2020-12-22 06:03:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:03:15,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:15,063 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] [2020-12-22 06:03:15,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:03:15,064 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 06:03:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:15,064 INFO L82 PathProgramCache]: Analyzing trace with hash 928416618, now seen corresponding path program 1 times [2020-12-22 06:03:15,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:15,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329681564] [2020-12-22 06:03:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:15,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329681564] [2020-12-22 06:03:15,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:15,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:15,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134250501] [2020-12-22 06:03:15,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:15,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:15,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:15,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:15,136 INFO L87 Difference]: Start difference. First operand 7081 states and 13302 transitions. Second operand 4 states. [2020-12-22 06:03:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:15,488 INFO L93 Difference]: Finished difference Result 14101 states and 26525 transitions. [2020-12-22 06:03:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:15,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:03:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:15,500 INFO L225 Difference]: With dead ends: 14101 [2020-12-22 06:03:15,500 INFO L226 Difference]: Without dead ends: 7067 [2020-12-22 06:03:15,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:15,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7067 states. [2020-12-22 06:03:15,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7067 to 7067. [2020-12-22 06:03:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7067 states. [2020-12-22 06:03:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7067 states to 7067 states and 13281 transitions. [2020-12-22 06:03:15,882 INFO L78 Accepts]: Start accepts. Automaton has 7067 states and 13281 transitions. Word has length 58 [2020-12-22 06:03:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:15,883 INFO L481 AbstractCegarLoop]: Abstraction has 7067 states and 13281 transitions. [2020-12-22 06:03:15,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 7067 states and 13281 transitions. [2020-12-22 06:03:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:03:15,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:15,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:15,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:03:15,885 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 06:03:15,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:15,886 INFO L82 PathProgramCache]: Analyzing trace with hash -571975651, now seen corresponding path program 1 times [2020-12-22 06:03:15,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:15,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892471744] [2020-12-22 06:03:15,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:15,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892471744] [2020-12-22 06:03:15,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:15,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:03:15,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580955800] [2020-12-22 06:03:15,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:03:15,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:15,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:03:15,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:15,978 INFO L87 Difference]: Start difference. First operand 7067 states and 13281 transitions. Second operand 6 states. [2020-12-22 06:03:16,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:16,575 INFO L93 Difference]: Finished difference Result 14101 states and 26520 transitions. [2020-12-22 06:03:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:16,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 06:03:16,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:16,587 INFO L225 Difference]: With dead ends: 14101 [2020-12-22 06:03:16,587 INFO L226 Difference]: Without dead ends: 7087 [2020-12-22 06:03:16,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:03:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7087 states. [2020-12-22 06:03:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7087 to 7067. [2020-12-22 06:03:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7067 states. [2020-12-22 06:03:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7067 states to 7067 states and 13280 transitions. [2020-12-22 06:03:16,921 INFO L78 Accepts]: Start accepts. Automaton has 7067 states and 13280 transitions. Word has length 59 [2020-12-22 06:03:16,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:16,921 INFO L481 AbstractCegarLoop]: Abstraction has 7067 states and 13280 transitions. [2020-12-22 06:03:16,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:03:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7067 states and 13280 transitions. [2020-12-22 06:03:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:03:16,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:16,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:16,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:03:16,923 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 06:03:16,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:16,924 INFO L82 PathProgramCache]: Analyzing trace with hash -886372271, now seen corresponding path program 1 times [2020-12-22 06:03:16,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:16,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922840215] [2020-12-22 06:03:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:17,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922840215] [2020-12-22 06:03:17,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:17,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:03:17,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476125285] [2020-12-22 06:03:17,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:03:17,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:17,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:03:17,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:17,013 INFO L87 Difference]: Start difference. First operand 7067 states and 13280 transitions. Second operand 6 states. [2020-12-22 06:03:17,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:17,645 INFO L93 Difference]: Finished difference Result 14091 states and 26501 transitions. [2020-12-22 06:03:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:17,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 06:03:17,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:17,658 INFO L225 Difference]: With dead ends: 14091 [2020-12-22 06:03:17,658 INFO L226 Difference]: Without dead ends: 7082 [2020-12-22 06:03:17,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:03:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7082 states. [2020-12-22 06:03:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7082 to 7067. [2020-12-22 06:03:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7067 states. [2020-12-22 06:03:18,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7067 states to 7067 states and 13279 transitions. [2020-12-22 06:03:18,003 INFO L78 Accepts]: Start accepts. Automaton has 7067 states and 13279 transitions. Word has length 60 [2020-12-22 06:03:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:18,003 INFO L481 AbstractCegarLoop]: Abstraction has 7067 states and 13279 transitions. [2020-12-22 06:03:18,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:03:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 7067 states and 13279 transitions. [2020-12-22 06:03:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:03:18,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:18,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:18,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:03:18,005 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 06:03:18,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:18,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1691005906, now seen corresponding path program 1 times [2020-12-22 06:03:18,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:18,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317035717] [2020-12-22 06:03:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:18,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:18,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317035717] [2020-12-22 06:03:18,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:18,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:18,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411746840] [2020-12-22 06:03:18,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:18,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:18,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:18,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:18,092 INFO L87 Difference]: Start difference. First operand 7067 states and 13279 transitions. Second operand 3 states. [2020-12-22 06:03:19,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:19,140 INFO L93 Difference]: Finished difference Result 15627 states and 29425 transitions. [2020-12-22 06:03:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:19,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:03:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:19,160 INFO L225 Difference]: With dead ends: 15627 [2020-12-22 06:03:19,160 INFO L226 Difference]: Without dead ends: 12068 [2020-12-22 06:03:19,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12068 states. [2020-12-22 06:03:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12068 to 10089. [2020-12-22 06:03:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10089 states. [2020-12-22 06:03:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 18979 transitions. [2020-12-22 06:03:19,764 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 18979 transitions. Word has length 61 [2020-12-22 06:03:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:19,764 INFO L481 AbstractCegarLoop]: Abstraction has 10089 states and 18979 transitions. [2020-12-22 06:03:19,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 18979 transitions. [2020-12-22 06:03:19,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:03:19,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:19,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:19,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:03:19,770 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 06:03:19,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:19,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1011063924, now seen corresponding path program 1 times [2020-12-22 06:03:19,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:19,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784501528] [2020-12-22 06:03:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:19,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784501528] [2020-12-22 06:03:19,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:19,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:19,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122599799] [2020-12-22 06:03:19,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:19,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:19,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:19,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:19,885 INFO L87 Difference]: Start difference. First operand 10089 states and 18979 transitions. Second operand 5 states. [2020-12-22 06:03:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:20,838 INFO L93 Difference]: Finished difference Result 20569 states and 38550 transitions. [2020-12-22 06:03:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:03:20,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-22 06:03:20,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:20,857 INFO L225 Difference]: With dead ends: 20569 [2020-12-22 06:03:20,857 INFO L226 Difference]: Without dead ends: 11746 [2020-12-22 06:03:20,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:03:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11746 states. [2020-12-22 06:03:21,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11746 to 8370. [2020-12-22 06:03:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8370 states. [2020-12-22 06:03:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8370 states to 8370 states and 15671 transitions. [2020-12-22 06:03:21,415 INFO L78 Accepts]: Start accepts. Automaton has 8370 states and 15671 transitions. Word has length 80 [2020-12-22 06:03:21,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:21,415 INFO L481 AbstractCegarLoop]: Abstraction has 8370 states and 15671 transitions. [2020-12-22 06:03:21,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:21,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8370 states and 15671 transitions. [2020-12-22 06:03:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:03:21,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:21,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:21,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:03:21,419 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 06:03:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:21,420 INFO L82 PathProgramCache]: Analyzing trace with hash -12991944, now seen corresponding path program 1 times [2020-12-22 06:03:21,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:21,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003402627] [2020-12-22 06:03:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:21,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003402627] [2020-12-22 06:03:21,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:21,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:21,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223912820] [2020-12-22 06:03:21,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:21,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:21,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:21,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:21,500 INFO L87 Difference]: Start difference. First operand 8370 states and 15671 transitions. Second operand 4 states. [2020-12-22 06:03:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:25,945 INFO L93 Difference]: Finished difference Result 22587 states and 42240 transitions. [2020-12-22 06:03:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:25,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-12-22 06:03:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:25,966 INFO L225 Difference]: With dead ends: 22587 [2020-12-22 06:03:25,967 INFO L226 Difference]: Without dead ends: 14284 [2020-12-22 06:03:25,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14284 states. [2020-12-22 06:03:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14284 to 8370. [2020-12-22 06:03:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8370 states. [2020-12-22 06:03:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8370 states to 8370 states and 15266 transitions. [2020-12-22 06:03:26,441 INFO L78 Accepts]: Start accepts. Automaton has 8370 states and 15266 transitions. Word has length 81 [2020-12-22 06:03:26,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:26,442 INFO L481 AbstractCegarLoop]: Abstraction has 8370 states and 15266 transitions. [2020-12-22 06:03:26,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8370 states and 15266 transitions. [2020-12-22 06:03:26,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:03:26,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:26,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:26,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:03:26,445 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 06:03:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:26,446 INFO L82 PathProgramCache]: Analyzing trace with hash 552810660, now seen corresponding path program 1 times [2020-12-22 06:03:26,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:26,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422774044] [2020-12-22 06:03:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:26,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422774044] [2020-12-22 06:03:26,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:26,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:26,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010000023] [2020-12-22 06:03:26,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:26,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:26,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:26,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:26,531 INFO L87 Difference]: Start difference. First operand 8370 states and 15266 transitions. Second operand 3 states. [2020-12-22 06:03:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:27,585 INFO L93 Difference]: Finished difference Result 20831 states and 37960 transitions. [2020-12-22 06:03:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:27,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 06:03:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:27,607 INFO L225 Difference]: With dead ends: 20831 [2020-12-22 06:03:27,607 INFO L226 Difference]: Without dead ends: 14579 [2020-12-22 06:03:27,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:27,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14579 states. [2020-12-22 06:03:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14579 to 14556. [2020-12-22 06:03:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14556 states. [2020-12-22 06:03:28,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14556 states to 14556 states and 26525 transitions. [2020-12-22 06:03:28,327 INFO L78 Accepts]: Start accepts. Automaton has 14556 states and 26525 transitions. Word has length 89 [2020-12-22 06:03:28,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:28,328 INFO L481 AbstractCegarLoop]: Abstraction has 14556 states and 26525 transitions. [2020-12-22 06:03:28,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:28,328 INFO L276 IsEmpty]: Start isEmpty. Operand 14556 states and 26525 transitions. [2020-12-22 06:03:28,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:03:28,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:28,332 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] [2020-12-22 06:03:28,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:03:28,333 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 06:03:28,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:28,333 INFO L82 PathProgramCache]: Analyzing trace with hash 435102436, now seen corresponding path program 1 times [2020-12-22 06:03:28,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:28,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485827956] [2020-12-22 06:03:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:28,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485827956] [2020-12-22 06:03:28,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:28,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:28,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066603974] [2020-12-22 06:03:28,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:28,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:28,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:28,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:28,416 INFO L87 Difference]: Start difference. First operand 14556 states and 26525 transitions. Second operand 5 states. [2020-12-22 06:03:29,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:29,542 INFO L93 Difference]: Finished difference Result 26989 states and 49151 transitions. [2020-12-22 06:03:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:29,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-12-22 06:03:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:29,564 INFO L225 Difference]: With dead ends: 26989 [2020-12-22 06:03:29,564 INFO L226 Difference]: Without dead ends: 14579 [2020-12-22 06:03:29,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:29,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14579 states. [2020-12-22 06:03:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14579 to 14556. [2020-12-22 06:03:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14556 states. [2020-12-22 06:03:30,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14556 states to 14556 states and 26502 transitions. [2020-12-22 06:03:30,507 INFO L78 Accepts]: Start accepts. Automaton has 14556 states and 26502 transitions. Word has length 90 [2020-12-22 06:03:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:30,507 INFO L481 AbstractCegarLoop]: Abstraction has 14556 states and 26502 transitions. [2020-12-22 06:03:30,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 14556 states and 26502 transitions. [2020-12-22 06:03:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:03:30,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:30,511 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] [2020-12-22 06:03:30,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:03:30,512 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 06:03:30,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:30,512 INFO L82 PathProgramCache]: Analyzing trace with hash -151703578, now seen corresponding path program 1 times [2020-12-22 06:03:30,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:30,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976459001] [2020-12-22 06:03:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:30,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976459001] [2020-12-22 06:03:30,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:30,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:30,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562233055] [2020-12-22 06:03:30,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:30,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:30,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:30,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:30,593 INFO L87 Difference]: Start difference. First operand 14556 states and 26502 transitions. Second operand 3 states. [2020-12-22 06:03:31,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:31,380 INFO L93 Difference]: Finished difference Result 26993 states and 49135 transitions. [2020-12-22 06:03:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:31,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 06:03:31,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:31,407 INFO L225 Difference]: With dead ends: 26993 [2020-12-22 06:03:31,408 INFO L226 Difference]: Without dead ends: 14530 [2020-12-22 06:03:31,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14530 states. [2020-12-22 06:03:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14530 to 14530. [2020-12-22 06:03:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14530 states. [2020-12-22 06:03:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14530 states to 14530 states and 26452 transitions. [2020-12-22 06:03:32,162 INFO L78 Accepts]: Start accepts. Automaton has 14530 states and 26452 transitions. Word has length 90 [2020-12-22 06:03:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:32,163 INFO L481 AbstractCegarLoop]: Abstraction has 14530 states and 26452 transitions. [2020-12-22 06:03:32,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand 14530 states and 26452 transitions. [2020-12-22 06:03:32,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:03:32,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:32,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:32,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:03:32,167 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 06:03:32,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:32,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1023936640, now seen corresponding path program 1 times [2020-12-22 06:03:32,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:32,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034133036] [2020-12-22 06:03:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:32,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034133036] [2020-12-22 06:03:32,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:32,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:32,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790070500] [2020-12-22 06:03:32,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:32,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:32,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:32,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:32,256 INFO L87 Difference]: Start difference. First operand 14530 states and 26452 transitions. Second operand 5 states. [2020-12-22 06:03:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:34,658 INFO L93 Difference]: Finished difference Result 50872 states and 92704 transitions. [2020-12-22 06:03:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:34,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:03:34,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:34,725 INFO L225 Difference]: With dead ends: 50872 [2020-12-22 06:03:34,725 INFO L226 Difference]: Without dead ends: 38501 [2020-12-22 06:03:34,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:03:34,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38501 states. [2020-12-22 06:03:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38501 to 14530. [2020-12-22 06:03:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14530 states. [2020-12-22 06:03:35,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14530 states to 14530 states and 26438 transitions. [2020-12-22 06:03:35,696 INFO L78 Accepts]: Start accepts. Automaton has 14530 states and 26438 transitions. Word has length 92 [2020-12-22 06:03:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:35,696 INFO L481 AbstractCegarLoop]: Abstraction has 14530 states and 26438 transitions. [2020-12-22 06:03:35,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:35,696 INFO L276 IsEmpty]: Start isEmpty. Operand 14530 states and 26438 transitions. [2020-12-22 06:03:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:03:35,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:35,700 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 06:03:35,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:03:35,700 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 06:03:35,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:35,701 INFO L82 PathProgramCache]: Analyzing trace with hash 708628990, now seen corresponding path program 1 times [2020-12-22 06:03:35,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:35,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347975657] [2020-12-22 06:03:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:35,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347975657] [2020-12-22 06:03:35,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:35,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:35,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570458652] [2020-12-22 06:03:35,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:35,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:35,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:35,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:35,837 INFO L87 Difference]: Start difference. First operand 14530 states and 26438 transitions. Second operand 5 states. [2020-12-22 06:03:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:37,368 INFO L93 Difference]: Finished difference Result 23906 states and 43624 transitions. [2020-12-22 06:03:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:37,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:03:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:37,405 INFO L225 Difference]: With dead ends: 23906 [2020-12-22 06:03:37,405 INFO L226 Difference]: Without dead ends: 23893 [2020-12-22 06:03:37,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:37,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23893 states. [2020-12-22 06:03:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23893 to 14542. [2020-12-22 06:03:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14542 states. [2020-12-22 06:03:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14542 states to 14542 states and 26450 transitions. [2020-12-22 06:03:38,595 INFO L78 Accepts]: Start accepts. Automaton has 14542 states and 26450 transitions. Word has length 92 [2020-12-22 06:03:38,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:38,595 INFO L481 AbstractCegarLoop]: Abstraction has 14542 states and 26450 transitions. [2020-12-22 06:03:38,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:38,596 INFO L276 IsEmpty]: Start isEmpty. Operand 14542 states and 26450 transitions. [2020-12-22 06:03:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:03:38,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:38,600 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] [2020-12-22 06:03:38,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:03:38,601 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 06:03:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:38,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1072112605, now seen corresponding path program 1 times [2020-12-22 06:03:38,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:38,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810278576] [2020-12-22 06:03:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:38,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810278576] [2020-12-22 06:03:38,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:38,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:03:38,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30292496] [2020-12-22 06:03:38,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:03:38,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:38,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:03:38,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:38,724 INFO L87 Difference]: Start difference. First operand 14542 states and 26450 transitions. Second operand 7 states. [2020-12-22 06:03:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:40,353 INFO L93 Difference]: Finished difference Result 22085 states and 40146 transitions. [2020-12-22 06:03:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:03:40,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 06:03:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:40,385 INFO L225 Difference]: With dead ends: 22085 [2020-12-22 06:03:40,386 INFO L226 Difference]: Without dead ends: 22072 [2020-12-22 06:03:40,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:03:40,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22072 states. [2020-12-22 06:03:41,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22072 to 14646. [2020-12-22 06:03:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14646 states. [2020-12-22 06:03:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14646 states to 14646 states and 26604 transitions. [2020-12-22 06:03:41,643 INFO L78 Accepts]: Start accepts. Automaton has 14646 states and 26604 transitions. Word has length 94 [2020-12-22 06:03:41,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:41,643 INFO L481 AbstractCegarLoop]: Abstraction has 14646 states and 26604 transitions. [2020-12-22 06:03:41,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:03:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 14646 states and 26604 transitions. [2020-12-22 06:03:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 06:03:41,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:41,647 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 06:03:41,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:03:41,647 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 06:03:41,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:41,648 INFO L82 PathProgramCache]: Analyzing trace with hash -309090231, now seen corresponding path program 1 times [2020-12-22 06:03:41,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:41,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455679999] [2020-12-22 06:03:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:41,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455679999] [2020-12-22 06:03:41,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:41,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:41,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131712425] [2020-12-22 06:03:41,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:41,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:41,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:41,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:41,741 INFO L87 Difference]: Start difference. First operand 14646 states and 26604 transitions. Second operand 5 states. [2020-12-22 06:03:48,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:48,644 INFO L93 Difference]: Finished difference Result 57831 states and 105661 transitions. [2020-12-22 06:03:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:03:48,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-12-22 06:03:48,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:48,710 INFO L225 Difference]: With dead ends: 57831 [2020-12-22 06:03:48,711 INFO L226 Difference]: Without dead ends: 45358 [2020-12-22 06:03:48,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:03:48,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45358 states. [2020-12-22 06:03:50,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45358 to 14662. [2020-12-22 06:03:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14662 states. [2020-12-22 06:03:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14662 states to 14662 states and 26620 transitions. [2020-12-22 06:03:50,061 INFO L78 Accepts]: Start accepts. Automaton has 14662 states and 26620 transitions. Word has length 101 [2020-12-22 06:03:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:50,062 INFO L481 AbstractCegarLoop]: Abstraction has 14662 states and 26620 transitions. [2020-12-22 06:03:50,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14662 states and 26620 transitions. [2020-12-22 06:03:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:03:50,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:50,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:50,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:03:50,065 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 06:03:50,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:50,066 INFO L82 PathProgramCache]: Analyzing trace with hash 181345602, now seen corresponding path program 1 times [2020-12-22 06:03:50,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:50,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838701904] [2020-12-22 06:03:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:50,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838701904] [2020-12-22 06:03:50,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:50,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:50,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561477253] [2020-12-22 06:03:50,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:50,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:50,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:50,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:50,173 INFO L87 Difference]: Start difference. First operand 14662 states and 26620 transitions. Second operand 3 states. [2020-12-22 06:03:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:52,048 INFO L93 Difference]: Finished difference Result 35833 states and 65138 transitions. [2020-12-22 06:03:52,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:52,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-22 06:03:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:52,076 INFO L225 Difference]: With dead ends: 35833 [2020-12-22 06:03:52,076 INFO L226 Difference]: Without dead ends: 22500 [2020-12-22 06:03:52,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22500 states. [2020-12-22 06:03:53,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22500 to 22487. [2020-12-22 06:03:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22487 states. [2020-12-22 06:03:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22487 states to 22487 states and 40821 transitions. [2020-12-22 06:03:53,760 INFO L78 Accepts]: Start accepts. Automaton has 22487 states and 40821 transitions. Word has length 102 [2020-12-22 06:03:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:53,761 INFO L481 AbstractCegarLoop]: Abstraction has 22487 states and 40821 transitions. [2020-12-22 06:03:53,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 22487 states and 40821 transitions. [2020-12-22 06:03:53,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:03:53,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:53,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:53,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:03:53,765 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 06:03:53,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:53,766 INFO L82 PathProgramCache]: Analyzing trace with hash -496453171, now seen corresponding path program 1 times [2020-12-22 06:03:53,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:53,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54411607] [2020-12-22 06:03:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:53,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54411607] [2020-12-22 06:03:53,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:53,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:53,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175963116] [2020-12-22 06:03:53,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:53,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:53,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:53,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:53,863 INFO L87 Difference]: Start difference. First operand 22487 states and 40821 transitions. Second operand 3 states. [2020-12-22 06:03:59,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:59,256 INFO L93 Difference]: Finished difference Result 58076 states and 105827 transitions. [2020-12-22 06:03:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:59,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-22 06:03:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:59,313 INFO L225 Difference]: With dead ends: 58076 [2020-12-22 06:03:59,313 INFO L226 Difference]: Without dead ends: 37542 [2020-12-22 06:03:59,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37542 states. [2020-12-22 06:04:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37542 to 21791. [2020-12-22 06:04:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21791 states. [2020-12-22 06:04:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21791 states to 21791 states and 39273 transitions. [2020-12-22 06:04:00,973 INFO L78 Accepts]: Start accepts. Automaton has 21791 states and 39273 transitions. Word has length 102 [2020-12-22 06:04:00,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:00,974 INFO L481 AbstractCegarLoop]: Abstraction has 21791 states and 39273 transitions. [2020-12-22 06:04:00,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:04:00,974 INFO L276 IsEmpty]: Start isEmpty. Operand 21791 states and 39273 transitions. [2020-12-22 06:04:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 06:04:00,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:00,978 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 06:04:00,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:04:00,978 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 06:04:00,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:00,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1771704113, now seen corresponding path program 1 times [2020-12-22 06:04:00,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:00,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90959911] [2020-12-22 06:04:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:01,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90959911] [2020-12-22 06:04:01,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:01,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:01,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790540186] [2020-12-22 06:04:01,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:01,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:01,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:01,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:01,074 INFO L87 Difference]: Start difference. First operand 21791 states and 39273 transitions. Second operand 5 states. [2020-12-22 06:04:06,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:06,636 INFO L93 Difference]: Finished difference Result 56148 states and 102235 transitions. [2020-12-22 06:04:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:04:06,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 06:04:06,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:06,686 INFO L225 Difference]: With dead ends: 56148 [2020-12-22 06:04:06,686 INFO L226 Difference]: Without dead ends: 36382 [2020-12-22 06:04:06,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:04:06,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36382 states. [2020-12-22 06:04:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36382 to 21791. [2020-12-22 06:04:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21791 states. [2020-12-22 06:04:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21791 states to 21791 states and 38781 transitions. [2020-12-22 06:04:08,347 INFO L78 Accepts]: Start accepts. Automaton has 21791 states and 38781 transitions. Word has length 105 [2020-12-22 06:04:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:08,347 INFO L481 AbstractCegarLoop]: Abstraction has 21791 states and 38781 transitions. [2020-12-22 06:04:08,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:08,347 INFO L276 IsEmpty]: Start isEmpty. Operand 21791 states and 38781 transitions. [2020-12-22 06:04:08,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 06:04:08,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:08,351 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] [2020-12-22 06:04:08,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:04:08,352 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 06:04:08,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:08,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1938440118, now seen corresponding path program 1 times [2020-12-22 06:04:08,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:08,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106252240] [2020-12-22 06:04:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:08,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106252240] [2020-12-22 06:04:08,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:08,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:08,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344457921] [2020-12-22 06:04:08,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:04:08,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:08,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:04:08,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:04:08,518 INFO L87 Difference]: Start difference. First operand 21791 states and 38781 transitions. Second operand 6 states. [2020-12-22 06:04:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:21,306 INFO L93 Difference]: Finished difference Result 113887 states and 205268 transitions. [2020-12-22 06:04:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:04:21,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-12-22 06:04:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:21,428 INFO L225 Difference]: With dead ends: 113887 [2020-12-22 06:04:21,429 INFO L226 Difference]: Without dead ends: 92190 [2020-12-22 06:04:21,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:04:21,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92190 states. [2020-12-22 06:04:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92190 to 43042. [2020-12-22 06:04:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43042 states. [2020-12-22 06:04:25,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43042 states to 43042 states and 76634 transitions. [2020-12-22 06:04:25,384 INFO L78 Accepts]: Start accepts. Automaton has 43042 states and 76634 transitions. Word has length 106 [2020-12-22 06:04:25,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:25,384 INFO L481 AbstractCegarLoop]: Abstraction has 43042 states and 76634 transitions. [2020-12-22 06:04:25,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:04:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 43042 states and 76634 transitions. [2020-12-22 06:04:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 06:04:25,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:25,391 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] [2020-12-22 06:04:25,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:04:25,392 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 06:04:25,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:25,392 INFO L82 PathProgramCache]: Analyzing trace with hash -940971547, now seen corresponding path program 1 times [2020-12-22 06:04:25,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:25,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273227596] [2020-12-22 06:04:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:25,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273227596] [2020-12-22 06:04:25,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:25,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:25,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310459097] [2020-12-22 06:04:25,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:25,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:25,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:25,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:25,465 INFO L87 Difference]: Start difference. First operand 43042 states and 76634 transitions. Second operand 5 states. [2020-12-22 06:04:29,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:29,127 INFO L93 Difference]: Finished difference Result 86016 states and 153177 transitions. [2020-12-22 06:04:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:04:29,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 06:04:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:29,186 INFO L225 Difference]: With dead ends: 86016 [2020-12-22 06:04:29,186 INFO L226 Difference]: Without dead ends: 43053 [2020-12-22 06:04:29,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:04:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43053 states. [2020-12-22 06:04:32,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43053 to 43038. [2020-12-22 06:04:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43038 states. [2020-12-22 06:04:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43038 states to 43038 states and 76624 transitions. [2020-12-22 06:04:33,038 INFO L78 Accepts]: Start accepts. Automaton has 43038 states and 76624 transitions. Word has length 108 [2020-12-22 06:04:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:33,038 INFO L481 AbstractCegarLoop]: Abstraction has 43038 states and 76624 transitions. [2020-12-22 06:04:33,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:33,039 INFO L276 IsEmpty]: Start isEmpty. Operand 43038 states and 76624 transitions. [2020-12-22 06:04:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 06:04:33,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:33,046 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 06:04:33,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:04:33,046 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 06:04:33,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:33,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1226482397, now seen corresponding path program 1 times [2020-12-22 06:04:33,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:33,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17227301] [2020-12-22 06:04:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:33,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17227301] [2020-12-22 06:04:33,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:33,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:33,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394179133] [2020-12-22 06:04:33,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:33,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:33,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:33,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:33,180 INFO L87 Difference]: Start difference. First operand 43038 states and 76624 transitions. Second operand 4 states. [2020-12-22 06:04:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:38,613 INFO L93 Difference]: Finished difference Result 101808 states and 182000 transitions. [2020-12-22 06:04:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:38,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-12-22 06:04:38,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:38,702 INFO L225 Difference]: With dead ends: 101808 [2020-12-22 06:04:38,702 INFO L226 Difference]: Without dead ends: 58923 [2020-12-22 06:04:38,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58923 states. [2020-12-22 06:04:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58923 to 42891. [2020-12-22 06:04:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42891 states. [2020-12-22 06:04:42,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42891 states to 42891 states and 76351 transitions. [2020-12-22 06:04:42,447 INFO L78 Accepts]: Start accepts. Automaton has 42891 states and 76351 transitions. Word has length 109 [2020-12-22 06:04:42,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:42,447 INFO L481 AbstractCegarLoop]: Abstraction has 42891 states and 76351 transitions. [2020-12-22 06:04:42,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:42,448 INFO L276 IsEmpty]: Start isEmpty. Operand 42891 states and 76351 transitions. [2020-12-22 06:04:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 06:04:42,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:42,455 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 06:04:42,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:04:42,456 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1182990021, now seen corresponding path program 1 times [2020-12-22 06:04:42,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:42,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809199773] [2020-12-22 06:04:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:42,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809199773] [2020-12-22 06:04:42,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:42,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:42,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301010192] [2020-12-22 06:04:42,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:42,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:42,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:42,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:42,534 INFO L87 Difference]: Start difference. First operand 42891 states and 76351 transitions. Second operand 5 states. [2020-12-22 06:04:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:44,903 INFO L93 Difference]: Finished difference Result 64104 states and 114120 transitions. [2020-12-22 06:04:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:04:44,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-12-22 06:04:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:44,930 INFO L225 Difference]: With dead ends: 64104 [2020-12-22 06:04:44,930 INFO L226 Difference]: Without dead ends: 21243 [2020-12-22 06:04:44,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:04:44,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21243 states. [2020-12-22 06:04:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21243 to 21243. [2020-12-22 06:04:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21243 states. [2020-12-22 06:04:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21243 states to 21243 states and 37804 transitions. [2020-12-22 06:04:46,831 INFO L78 Accepts]: Start accepts. Automaton has 21243 states and 37804 transitions. Word has length 109 [2020-12-22 06:04:46,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:46,831 INFO L481 AbstractCegarLoop]: Abstraction has 21243 states and 37804 transitions. [2020-12-22 06:04:46,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 21243 states and 37804 transitions. [2020-12-22 06:04:46,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:04:46,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:46,836 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 06:04:46,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 06:04:46,836 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:46,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1014919298, now seen corresponding path program 1 times [2020-12-22 06:04:46,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:46,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521457878] [2020-12-22 06:04:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:46,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521457878] [2020-12-22 06:04:46,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:46,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:46,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010375669] [2020-12-22 06:04:46,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:46,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:46,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:46,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:46,933 INFO L87 Difference]: Start difference. First operand 21243 states and 37804 transitions. Second operand 5 states. [2020-12-22 06:04:57,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:57,139 INFO L93 Difference]: Finished difference Result 84166 states and 151165 transitions. [2020-12-22 06:04:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:04:57,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 06:04:57,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:57,224 INFO L225 Difference]: With dead ends: 84166 [2020-12-22 06:04:57,224 INFO L226 Difference]: Without dead ends: 63003 [2020-12-22 06:04:57,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:04:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63003 states. [2020-12-22 06:04:59,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63003 to 21281. [2020-12-22 06:04:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21281 states. [2020-12-22 06:04:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21281 states to 21281 states and 37842 transitions. [2020-12-22 06:04:59,489 INFO L78 Accepts]: Start accepts. Automaton has 21281 states and 37842 transitions. Word has length 110 [2020-12-22 06:04:59,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:59,489 INFO L481 AbstractCegarLoop]: Abstraction has 21281 states and 37842 transitions. [2020-12-22 06:04:59,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 21281 states and 37842 transitions. [2020-12-22 06:04:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 06:04:59,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:59,494 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] [2020-12-22 06:04:59,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 06:04:59,494 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:59,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2091694079, now seen corresponding path program 1 times [2020-12-22 06:04:59,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:59,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997102163] [2020-12-22 06:04:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:59,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997102163] [2020-12-22 06:04:59,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:59,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:59,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883889716] [2020-12-22 06:04:59,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:59,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:59,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:59,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:59,568 INFO L87 Difference]: Start difference. First operand 21281 states and 37842 transitions. Second operand 4 states. [2020-12-22 06:05:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:08,253 INFO L93 Difference]: Finished difference Result 61443 states and 110635 transitions. [2020-12-22 06:05:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:05:08,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-22 06:05:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:08,321 INFO L225 Difference]: With dead ends: 61443 [2020-12-22 06:05:08,321 INFO L226 Difference]: Without dead ends: 40229 [2020-12-22 06:05:08,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:08,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40229 states. [2020-12-22 06:05:10,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40229 to 26104. [2020-12-22 06:05:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26104 states. [2020-12-22 06:05:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26104 states to 26104 states and 45773 transitions. [2020-12-22 06:05:10,835 INFO L78 Accepts]: Start accepts. Automaton has 26104 states and 45773 transitions. Word has length 111 [2020-12-22 06:05:10,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:10,835 INFO L481 AbstractCegarLoop]: Abstraction has 26104 states and 45773 transitions. [2020-12-22 06:05:10,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:10,835 INFO L276 IsEmpty]: Start isEmpty. Operand 26104 states and 45773 transitions. [2020-12-22 06:05:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 06:05:10,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:10,840 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 06:05:10,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 06:05:10,840 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:10,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:10,841 INFO L82 PathProgramCache]: Analyzing trace with hash 210792199, now seen corresponding path program 1 times [2020-12-22 06:05:10,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:10,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92535186] [2020-12-22 06:05:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:11,060 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-12-22 06:05:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:11,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92535186] [2020-12-22 06:05:11,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:11,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:11,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629312169] [2020-12-22 06:05:11,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:11,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:11,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:11,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:11,093 INFO L87 Difference]: Start difference. First operand 26104 states and 45773 transitions. Second operand 5 states. [2020-12-22 06:05:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:21,073 INFO L93 Difference]: Finished difference Result 126598 states and 221941 transitions. [2020-12-22 06:05:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:05:21,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-12-22 06:05:21,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:21,256 INFO L225 Difference]: With dead ends: 126598 [2020-12-22 06:05:21,256 INFO L226 Difference]: Without dead ends: 100570 [2020-12-22 06:05:21,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:05:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100570 states. [2020-12-22 06:05:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100570 to 26148. [2020-12-22 06:05:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26148 states. [2020-12-22 06:05:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26148 states to 26148 states and 45817 transitions. [2020-12-22 06:05:24,426 INFO L78 Accepts]: Start accepts. Automaton has 26148 states and 45817 transitions. Word has length 113 [2020-12-22 06:05:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:24,427 INFO L481 AbstractCegarLoop]: Abstraction has 26148 states and 45817 transitions. [2020-12-22 06:05:24,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 26148 states and 45817 transitions. [2020-12-22 06:05:24,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 06:05:24,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:24,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:24,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 06:05:24,430 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:24,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:24,431 INFO L82 PathProgramCache]: Analyzing trace with hash -270288059, now seen corresponding path program 1 times [2020-12-22 06:05:24,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:24,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866283153] [2020-12-22 06:05:24,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:24,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866283153] [2020-12-22 06:05:24,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:24,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:05:24,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709936867] [2020-12-22 06:05:24,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:05:24,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:24,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:05:24,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:05:24,620 INFO L87 Difference]: Start difference. First operand 26148 states and 45817 transitions. Second operand 7 states. [2020-12-22 06:05:44,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:44,912 INFO L93 Difference]: Finished difference Result 115483 states and 203613 transitions. [2020-12-22 06:05:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 06:05:44,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-12-22 06:05:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:45,087 INFO L225 Difference]: With dead ends: 115483 [2020-12-22 06:05:45,087 INFO L226 Difference]: Without dead ends: 94471 [2020-12-22 06:05:45,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:05:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94471 states. [2020-12-22 06:05:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94471 to 36195. [2020-12-22 06:05:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36195 states. [2020-12-22 06:05:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36195 states to 36195 states and 63805 transitions. [2020-12-22 06:05:49,721 INFO L78 Accepts]: Start accepts. Automaton has 36195 states and 63805 transitions. Word has length 113 [2020-12-22 06:05:49,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:49,722 INFO L481 AbstractCegarLoop]: Abstraction has 36195 states and 63805 transitions. [2020-12-22 06:05:49,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:05:49,722 INFO L276 IsEmpty]: Start isEmpty. Operand 36195 states and 63805 transitions. [2020-12-22 06:05:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 06:05:49,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:49,725 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 06:05:49,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 06:05:49,725 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:49,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1633859199, now seen corresponding path program 1 times [2020-12-22 06:05:49,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:49,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649185198] [2020-12-22 06:05:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:50,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649185198] [2020-12-22 06:05:50,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:50,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:50,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585472657] [2020-12-22 06:05:50,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:05:50,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:50,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:05:50,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:05:50,032 INFO L87 Difference]: Start difference. First operand 36195 states and 63805 transitions. Second operand 6 states. [2020-12-22 06:06:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:05,013 INFO L93 Difference]: Finished difference Result 121307 states and 213723 transitions. [2020-12-22 06:06:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:06:05,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-12-22 06:06:05,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:05,164 INFO L225 Difference]: With dead ends: 121307 [2020-12-22 06:06:05,164 INFO L226 Difference]: Without dead ends: 87323 [2020-12-22 06:06:05,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:06:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87323 states. [2020-12-22 06:06:11,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87323 to 49987. [2020-12-22 06:06:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49987 states. [2020-12-22 06:06:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49987 states to 49987 states and 87188 transitions. [2020-12-22 06:06:11,432 INFO L78 Accepts]: Start accepts. Automaton has 49987 states and 87188 transitions. Word has length 113 [2020-12-22 06:06:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:11,432 INFO L481 AbstractCegarLoop]: Abstraction has 49987 states and 87188 transitions. [2020-12-22 06:06:11,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:06:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 49987 states and 87188 transitions. [2020-12-22 06:06:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 06:06:11,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:11,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:11,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 06:06:11,437 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:11,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1556778664, now seen corresponding path program 1 times [2020-12-22 06:06:11,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:11,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623347773] [2020-12-22 06:06:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:11,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623347773] [2020-12-22 06:06:11,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:11,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:06:11,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624202574] [2020-12-22 06:06:11,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:06:11,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:11,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:06:11,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:11,522 INFO L87 Difference]: Start difference. First operand 49987 states and 87188 transitions. Second operand 5 states. [2020-12-22 06:06:23,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:23,266 INFO L93 Difference]: Finished difference Result 147556 states and 257318 transitions. [2020-12-22 06:06:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:06:23,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-12-22 06:06:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:23,451 INFO L225 Difference]: With dead ends: 147556 [2020-12-22 06:06:23,451 INFO L226 Difference]: Without dead ends: 99817 [2020-12-22 06:06:23,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:06:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99817 states.