/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_spec9_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:14:06,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:14:06,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:14:06,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:14:06,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:14:06,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:14:06,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:14:07,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:14:07,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:14:07,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:14:07,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:14:07,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:14:07,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:14:07,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:14:07,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:14:07,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:14:07,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:14:07,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:14:07,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:14:07,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:14:07,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:14:07,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:14:07,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:14:07,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:14:07,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:14:07,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:14:07,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:14:07,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:14:07,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:14:07,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:14:07,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:14:07,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:14:07,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:14:07,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:14:07,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:14:07,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:14:07,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:14:07,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:14:07,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:14:07,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:14:07,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:14:07,180 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:14:07,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:14:07,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:14:07,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:14:07,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:14:07,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:14:07,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:14:07,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:14:07,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:14:07,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:14:07,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:14:07,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:14:07,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:14:07,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:14:07,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:14:07,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:14:07,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:14:07,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:14:07,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:14:07,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:14:07,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:14:07,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:14:07,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:14:07,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:14:07,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:14:07,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:14:07,620 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:14:07,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2020-12-22 06:14:07,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febef5f88/eacc157aed344279b6f61de8175c08b4/FLAGf156bf248 [2020-12-22 06:14:08,544 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:14:08,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2020-12-22 06:14:08,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febef5f88/eacc157aed344279b6f61de8175c08b4/FLAGf156bf248 [2020-12-22 06:14:08,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febef5f88/eacc157aed344279b6f61de8175c08b4 [2020-12-22 06:14:08,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:14:08,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:14:08,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:14:08,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:14:08,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:14:08,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:14:08" (1/1) ... [2020-12-22 06:14:08,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da90539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:08, skipping insertion in model container [2020-12-22 06:14:08,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:14:08" (1/1) ... [2020-12-22 06:14:08,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:14:08,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:14:09,380 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_spec9_product28.cil.c[72726,72739] [2020-12-22 06:14:09,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:14:09,445 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:14:09,592 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_spec9_product28.cil.c[72726,72739] [2020-12-22 06:14:09,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:14:09,660 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:14:09,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09 WrapperNode [2020-12-22 06:14:09,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:14:09,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:14:09,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:14:09,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:14:09,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (1/1) ... [2020-12-22 06:14:09,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (1/1) ... [2020-12-22 06:14:10,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:14:10,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:14:10,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:14:10,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:14:10,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (1/1) ... [2020-12-22 06:14:10,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (1/1) ... [2020-12-22 06:14:10,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (1/1) ... [2020-12-22 06:14:10,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (1/1) ... [2020-12-22 06:14:10,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (1/1) ... [2020-12-22 06:14:10,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (1/1) ... [2020-12-22 06:14:10,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (1/1) ... [2020-12-22 06:14:10,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:14:10,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:14:10,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:14:10,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:14:10,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (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 06:14:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:14:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:14:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:14:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:14:20,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:14:20,474 INFO L299 CfgBuilder]: Removed 1233 assume(true) statements. [2020-12-22 06:14:20,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:14:20 BoogieIcfgContainer [2020-12-22 06:14:20,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:14:20,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:14:20,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:14:20,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:14:20,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:14:08" (1/3) ... [2020-12-22 06:14:20,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64adb762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:14:20, skipping insertion in model container [2020-12-22 06:14:20,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:09" (2/3) ... [2020-12-22 06:14:20,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64adb762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:14:20, skipping insertion in model container [2020-12-22 06:14:20,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:14:20" (3/3) ... [2020-12-22 06:14:20,490 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2020-12-22 06:14:20,497 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:14:20,504 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:14:20,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:14:20,572 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:14:20,572 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:14:20,572 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:14:20,572 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:14:20,572 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:14:20,573 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:14:20,573 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:14:20,573 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:14:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states. [2020-12-22 06:14:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 06:14:20,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:20,669 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] [2020-12-22 06:14:20,669 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 06:14:20,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:20,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1878440157, now seen corresponding path program 1 times [2020-12-22 06:14:20,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:20,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320496669] [2020-12-22 06:14:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:21,127 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 06:14:21,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320496669] [2020-12-22 06:14:21,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:21,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:21,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189781194] [2020-12-22 06:14:21,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:21,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:21,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:21,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:21,158 INFO L87 Difference]: Start difference. First operand 5044 states. Second operand 3 states. [2020-12-22 06:14:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:21,455 INFO L93 Difference]: Finished difference Result 10079 states and 18997 transitions. [2020-12-22 06:14:21,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:14:21,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 06:14:21,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:21,530 INFO L225 Difference]: With dead ends: 10079 [2020-12-22 06:14:21,531 INFO L226 Difference]: Without dead ends: 5040 [2020-12-22 06:14:21,547 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 06:14:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2020-12-22 06:14:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 5040. [2020-12-22 06:14:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5040 states. [2020-12-22 06:14:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 9489 transitions. [2020-12-22 06:14:21,911 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 9489 transitions. Word has length 26 [2020-12-22 06:14:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:21,911 INFO L481 AbstractCegarLoop]: Abstraction has 5040 states and 9489 transitions. [2020-12-22 06:14:21,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:14:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 9489 transitions. [2020-12-22 06:14:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 06:14:21,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:21,915 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] [2020-12-22 06:14:21,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:14:21,916 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 06:14:21,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:21,917 INFO L82 PathProgramCache]: Analyzing trace with hash 495072838, now seen corresponding path program 1 times [2020-12-22 06:14:21,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:21,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222710072] [2020-12-22 06:14:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:22,051 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 06:14:22,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222710072] [2020-12-22 06:14:22,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:22,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:14:22,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666319317] [2020-12-22 06:14:22,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:14:22,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:22,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:14:22,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:14:22,055 INFO L87 Difference]: Start difference. First operand 5040 states and 9489 transitions. Second operand 6 states. [2020-12-22 06:14:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:22,452 INFO L93 Difference]: Finished difference Result 10031 states and 18894 transitions. [2020-12-22 06:14:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:14:22,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-12-22 06:14:22,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:22,483 INFO L225 Difference]: With dead ends: 10031 [2020-12-22 06:14:22,483 INFO L226 Difference]: Without dead ends: 5034 [2020-12-22 06:14:22,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:14:22,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2020-12-22 06:14:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 5034. [2020-12-22 06:14:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5034 states. [2020-12-22 06:14:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 9476 transitions. [2020-12-22 06:14:22,676 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 9476 transitions. Word has length 33 [2020-12-22 06:14:22,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:22,676 INFO L481 AbstractCegarLoop]: Abstraction has 5034 states and 9476 transitions. [2020-12-22 06:14:22,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:14:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 9476 transitions. [2020-12-22 06:14:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:14:22,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:22,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:22,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:14:22,685 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 06:14:22,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:22,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1082837096, now seen corresponding path program 1 times [2020-12-22 06:14:22,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:22,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259896613] [2020-12-22 06:14:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:22,837 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 06:14:22,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259896613] [2020-12-22 06:14:22,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:22,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:22,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132502877] [2020-12-22 06:14:22,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:22,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:22,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:22,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:22,845 INFO L87 Difference]: Start difference. First operand 5034 states and 9476 transitions. Second operand 4 states. [2020-12-22 06:14:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:23,162 INFO L93 Difference]: Finished difference Result 10025 states and 18881 transitions. [2020-12-22 06:14:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:23,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 06:14:23,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:23,191 INFO L225 Difference]: With dead ends: 10025 [2020-12-22 06:14:23,191 INFO L226 Difference]: Without dead ends: 5034 [2020-12-22 06:14:23,202 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 06:14:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2020-12-22 06:14:23,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 5034. [2020-12-22 06:14:23,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5034 states. [2020-12-22 06:14:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 9472 transitions. [2020-12-22 06:14:23,382 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 9472 transitions. Word has length 34 [2020-12-22 06:14:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:23,390 INFO L481 AbstractCegarLoop]: Abstraction has 5034 states and 9472 transitions. [2020-12-22 06:14:23,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 9472 transitions. [2020-12-22 06:14:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 06:14:23,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:23,394 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] [2020-12-22 06:14:23,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:14:23,395 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 06:14:23,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:23,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1846580093, now seen corresponding path program 1 times [2020-12-22 06:14:23,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:23,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831545541] [2020-12-22 06:14:23,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:23,603 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 06:14:23,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831545541] [2020-12-22 06:14:23,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:23,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:23,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487414613] [2020-12-22 06:14:23,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:23,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:23,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:23,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:23,607 INFO L87 Difference]: Start difference. First operand 5034 states and 9472 transitions. Second operand 4 states. [2020-12-22 06:14:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:23,948 INFO L93 Difference]: Finished difference Result 10025 states and 18877 transitions. [2020-12-22 06:14:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:23,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 06:14:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:23,983 INFO L225 Difference]: With dead ends: 10025 [2020-12-22 06:14:23,983 INFO L226 Difference]: Without dead ends: 5034 [2020-12-22 06:14:23,997 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 06:14:24,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2020-12-22 06:14:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 5034. [2020-12-22 06:14:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5034 states. [2020-12-22 06:14:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 9468 transitions. [2020-12-22 06:14:24,221 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 9468 transitions. Word has length 35 [2020-12-22 06:14:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:24,221 INFO L481 AbstractCegarLoop]: Abstraction has 5034 states and 9468 transitions. [2020-12-22 06:14:24,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:24,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 9468 transitions. [2020-12-22 06:14:24,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:14:24,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:24,223 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 06:14:24,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:14:24,226 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 06:14:24,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:24,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1140373091, now seen corresponding path program 1 times [2020-12-22 06:14:24,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:24,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847057593] [2020-12-22 06:14:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:24,319 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 06:14:24,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847057593] [2020-12-22 06:14:24,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:24,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:24,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724601574] [2020-12-22 06:14:24,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:24,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:24,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:24,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:24,323 INFO L87 Difference]: Start difference. First operand 5034 states and 9468 transitions. Second operand 4 states. [2020-12-22 06:14:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:24,637 INFO L93 Difference]: Finished difference Result 10025 states and 18873 transitions. [2020-12-22 06:14:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:24,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 06:14:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:24,680 INFO L225 Difference]: With dead ends: 10025 [2020-12-22 06:14:24,680 INFO L226 Difference]: Without dead ends: 5034 [2020-12-22 06:14:24,690 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 06:14:24,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2020-12-22 06:14:24,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 5034. [2020-12-22 06:14:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5034 states. [2020-12-22 06:14:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 9464 transitions. [2020-12-22 06:14:24,888 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 9464 transitions. Word has length 36 [2020-12-22 06:14:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:24,888 INFO L481 AbstractCegarLoop]: Abstraction has 5034 states and 9464 transitions. [2020-12-22 06:14:24,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:24,889 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 9464 transitions. [2020-12-22 06:14:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:14:24,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:24,890 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 06:14:24,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:14:24,890 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 06:14:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1733380579, now seen corresponding path program 1 times [2020-12-22 06:14:24,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:24,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183804958] [2020-12-22 06:14:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:24,984 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 06:14:24,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183804958] [2020-12-22 06:14:24,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:24,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:24,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271284940] [2020-12-22 06:14:24,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:24,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:24,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:24,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:24,986 INFO L87 Difference]: Start difference. First operand 5034 states and 9464 transitions. Second operand 4 states. [2020-12-22 06:14:25,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:25,230 INFO L93 Difference]: Finished difference Result 10025 states and 18869 transitions. [2020-12-22 06:14:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:25,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 06:14:25,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:25,247 INFO L225 Difference]: With dead ends: 10025 [2020-12-22 06:14:25,247 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:14:25,255 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 06:14:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:14:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:14:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:14:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9430 transitions. [2020-12-22 06:14:25,471 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9430 transitions. Word has length 36 [2020-12-22 06:14:25,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:25,472 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9430 transitions. [2020-12-22 06:14:25,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:25,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9430 transitions. [2020-12-22 06:14:25,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:14:25,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:25,473 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] [2020-12-22 06:14:25,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:14:25,473 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 06:14:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:25,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1443753186, now seen corresponding path program 1 times [2020-12-22 06:14:25,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:25,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394978203] [2020-12-22 06:14:25,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:25,579 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 06:14:25,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394978203] [2020-12-22 06:14:25,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:25,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:25,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863223104] [2020-12-22 06:14:25,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:25,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:25,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:25,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:25,582 INFO L87 Difference]: Start difference. First operand 5013 states and 9430 transitions. Second operand 4 states. [2020-12-22 06:14:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:25,864 INFO L93 Difference]: Finished difference Result 10004 states and 18835 transitions. [2020-12-22 06:14:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:25,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:14:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:25,878 INFO L225 Difference]: With dead ends: 10004 [2020-12-22 06:14:25,878 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:14:25,884 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 06:14:25,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:14:26,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:14:26,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:14:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9429 transitions. [2020-12-22 06:14:26,031 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9429 transitions. Word has length 37 [2020-12-22 06:14:26,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:26,031 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9429 transitions. [2020-12-22 06:14:26,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:26,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9429 transitions. [2020-12-22 06:14:26,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:14:26,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:26,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:26,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:14:26,034 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 06:14:26,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:26,034 INFO L82 PathProgramCache]: Analyzing trace with hash -637683618, now seen corresponding path program 1 times [2020-12-22 06:14:26,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:26,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643283557] [2020-12-22 06:14:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:26,128 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 06:14:26,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643283557] [2020-12-22 06:14:26,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:26,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:26,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886252785] [2020-12-22 06:14:26,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:26,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:26,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:26,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:26,131 INFO L87 Difference]: Start difference. First operand 5013 states and 9429 transitions. Second operand 4 states. [2020-12-22 06:14:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:26,368 INFO L93 Difference]: Finished difference Result 10004 states and 18834 transitions. [2020-12-22 06:14:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:26,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-22 06:14:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:26,383 INFO L225 Difference]: With dead ends: 10004 [2020-12-22 06:14:26,383 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:14:26,391 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 06:14:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:14:26,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:14:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:14:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9428 transitions. [2020-12-22 06:14:26,539 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9428 transitions. Word has length 38 [2020-12-22 06:14:26,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:26,540 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9428 transitions. [2020-12-22 06:14:26,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9428 transitions. [2020-12-22 06:14:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:14:26,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:26,542 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] [2020-12-22 06:14:26,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:14:26,542 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 06:14:26,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:26,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2109725255, now seen corresponding path program 1 times [2020-12-22 06:14:26,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:26,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450268000] [2020-12-22 06:14:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:26,622 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 06:14:26,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450268000] [2020-12-22 06:14:26,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:26,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:14:26,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021403460] [2020-12-22 06:14:26,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:14:26,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:26,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:14:26,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:14:26,629 INFO L87 Difference]: Start difference. First operand 5013 states and 9428 transitions. Second operand 7 states. [2020-12-22 06:14:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:26,982 INFO L93 Difference]: Finished difference Result 9998 states and 18822 transitions. [2020-12-22 06:14:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:14:26,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-12-22 06:14:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:26,997 INFO L225 Difference]: With dead ends: 9998 [2020-12-22 06:14:26,997 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:14:27,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:14:27,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:14:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:14:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:14:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9427 transitions. [2020-12-22 06:14:27,163 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9427 transitions. Word has length 39 [2020-12-22 06:14:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:27,165 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9427 transitions. [2020-12-22 06:14:27,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:14:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9427 transitions. [2020-12-22 06:14:27,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 06:14:27,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:27,166 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] [2020-12-22 06:14:27,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:14:27,166 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 06:14:27,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:27,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1884692599, now seen corresponding path program 1 times [2020-12-22 06:14:27,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:27,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875793716] [2020-12-22 06:14:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:27,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875793716] [2020-12-22 06:14:27,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:27,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:14:27,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990823675] [2020-12-22 06:14:27,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:27,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:27,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:27,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:27,262 INFO L87 Difference]: Start difference. First operand 5013 states and 9427 transitions. Second operand 3 states. [2020-12-22 06:14:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:27,765 INFO L93 Difference]: Finished difference Result 11609 states and 21889 transitions. [2020-12-22 06:14:27,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:14:27,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 06:14:27,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:27,789 INFO L225 Difference]: With dead ends: 11609 [2020-12-22 06:14:27,789 INFO L226 Difference]: Without dead ends: 9062 [2020-12-22 06:14:27,796 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 06:14:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9062 states. [2020-12-22 06:14:28,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9062 to 6963. [2020-12-22 06:14:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6963 states. [2020-12-22 06:14:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6963 states to 6963 states and 13105 transitions. [2020-12-22 06:14:28,138 INFO L78 Accepts]: Start accepts. Automaton has 6963 states and 13105 transitions. Word has length 40 [2020-12-22 06:14:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:28,138 INFO L481 AbstractCegarLoop]: Abstraction has 6963 states and 13105 transitions. [2020-12-22 06:14:28,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:14:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 6963 states and 13105 transitions. [2020-12-22 06:14:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:14:28,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:28,142 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 06:14:28,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:14:28,142 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 06:14:28,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:28,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1187864016, now seen corresponding path program 1 times [2020-12-22 06:14:28,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:28,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910850177] [2020-12-22 06:14:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:28,232 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 06:14:28,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910850177] [2020-12-22 06:14:28,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:28,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:14:28,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265399010] [2020-12-22 06:14:28,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:14:28,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:28,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:14:28,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:14:28,235 INFO L87 Difference]: Start difference. First operand 6963 states and 13105 transitions. Second operand 8 states. [2020-12-22 06:14:29,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:29,224 INFO L93 Difference]: Finished difference Result 15347 states and 28682 transitions. [2020-12-22 06:14:29,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:14:29,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-12-22 06:14:29,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:29,256 INFO L225 Difference]: With dead ends: 15347 [2020-12-22 06:14:29,257 INFO L226 Difference]: Without dead ends: 9632 [2020-12-22 06:14:29,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:14:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2020-12-22 06:14:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 5714. [2020-12-22 06:14:29,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:14:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10700 transitions. [2020-12-22 06:14:29,578 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10700 transitions. Word has length 59 [2020-12-22 06:14:29,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:29,579 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10700 transitions. [2020-12-22 06:14:29,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:14:29,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10700 transitions. [2020-12-22 06:14:29,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:14:29,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:29,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:29,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:14:29,582 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 06:14:29,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:29,582 INFO L82 PathProgramCache]: Analyzing trace with hash -775984150, now seen corresponding path program 1 times [2020-12-22 06:14:29,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:29,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180555217] [2020-12-22 06:14:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:29,683 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 06:14:29,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180555217] [2020-12-22 06:14:29,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:29,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:29,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889942739] [2020-12-22 06:14:29,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:29,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:29,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:29,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:29,685 INFO L87 Difference]: Start difference. First operand 5714 states and 10700 transitions. Second operand 4 states. [2020-12-22 06:14:31,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:31,513 INFO L93 Difference]: Finished difference Result 15739 states and 29587 transitions. [2020-12-22 06:14:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:31,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:14:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:31,541 INFO L225 Difference]: With dead ends: 15739 [2020-12-22 06:14:31,542 INFO L226 Difference]: Without dead ends: 10062 [2020-12-22 06:14:31,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:31,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2020-12-22 06:14:31,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 5714. [2020-12-22 06:14:31,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:14:31,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10683 transitions. [2020-12-22 06:14:31,831 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10683 transitions. Word has length 60 [2020-12-22 06:14:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:31,831 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10683 transitions. [2020-12-22 06:14:31,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:31,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10683 transitions. [2020-12-22 06:14:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:14:31,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:31,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:31,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:14:31,834 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 06:14:31,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:31,835 INFO L82 PathProgramCache]: Analyzing trace with hash -521471770, now seen corresponding path program 1 times [2020-12-22 06:14:31,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:31,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482304501] [2020-12-22 06:14:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:31,956 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 06:14:31,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482304501] [2020-12-22 06:14:31,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:31,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:31,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248320677] [2020-12-22 06:14:31,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:31,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:31,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:31,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:31,959 INFO L87 Difference]: Start difference. First operand 5714 states and 10683 transitions. Second operand 4 states. [2020-12-22 06:14:33,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:33,790 INFO L93 Difference]: Finished difference Result 15739 states and 29554 transitions. [2020-12-22 06:14:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:33,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:14:33,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:33,817 INFO L225 Difference]: With dead ends: 15739 [2020-12-22 06:14:33,818 INFO L226 Difference]: Without dead ends: 10062 [2020-12-22 06:14:33,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2020-12-22 06:14:34,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 5714. [2020-12-22 06:14:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:14:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10666 transitions. [2020-12-22 06:14:34,176 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10666 transitions. Word has length 62 [2020-12-22 06:14:34,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:34,176 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10666 transitions. [2020-12-22 06:14:34,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10666 transitions. [2020-12-22 06:14:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:14:34,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:34,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:34,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:14:34,179 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 06:14:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:34,180 INFO L82 PathProgramCache]: Analyzing trace with hash -940398092, now seen corresponding path program 1 times [2020-12-22 06:14:34,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:34,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358050505] [2020-12-22 06:14:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:34,276 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 06:14:34,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358050505] [2020-12-22 06:14:34,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:34,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:34,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14426156] [2020-12-22 06:14:34,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:34,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:34,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:34,278 INFO L87 Difference]: Start difference. First operand 5714 states and 10666 transitions. Second operand 4 states. [2020-12-22 06:14:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:36,010 INFO L93 Difference]: Finished difference Result 15739 states and 29521 transitions. [2020-12-22 06:14:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:36,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 06:14:36,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:36,041 INFO L225 Difference]: With dead ends: 15739 [2020-12-22 06:14:36,041 INFO L226 Difference]: Without dead ends: 10062 [2020-12-22 06:14:36,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:36,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2020-12-22 06:14:36,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 5714. [2020-12-22 06:14:36,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:14:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10649 transitions. [2020-12-22 06:14:36,359 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10649 transitions. Word has length 64 [2020-12-22 06:14:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:36,359 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10649 transitions. [2020-12-22 06:14:36,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10649 transitions. [2020-12-22 06:14:36,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:14:36,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:36,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:36,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:14:36,362 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 06:14:36,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:36,363 INFO L82 PathProgramCache]: Analyzing trace with hash 824325254, now seen corresponding path program 1 times [2020-12-22 06:14:36,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:36,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024587522] [2020-12-22 06:14:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:36,477 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 06:14:36,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024587522] [2020-12-22 06:14:36,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:36,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:36,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474598439] [2020-12-22 06:14:36,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:36,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:36,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:36,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:36,479 INFO L87 Difference]: Start difference. First operand 5714 states and 10649 transitions. Second operand 4 states. [2020-12-22 06:14:38,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:38,204 INFO L93 Difference]: Finished difference Result 15739 states and 29488 transitions. [2020-12-22 06:14:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:38,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 06:14:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:38,226 INFO L225 Difference]: With dead ends: 15739 [2020-12-22 06:14:38,226 INFO L226 Difference]: Without dead ends: 10062 [2020-12-22 06:14:38,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2020-12-22 06:14:38,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 5714. [2020-12-22 06:14:38,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:14:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10632 transitions. [2020-12-22 06:14:38,569 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10632 transitions. Word has length 66 [2020-12-22 06:14:38,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:38,569 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10632 transitions. [2020-12-22 06:14:38,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:38,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10632 transitions. [2020-12-22 06:14:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:14:38,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:38,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:38,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:14:38,573 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 06:14:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:38,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1192870016, now seen corresponding path program 1 times [2020-12-22 06:14:38,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:38,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764048438] [2020-12-22 06:14:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:38,671 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 06:14:38,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764048438] [2020-12-22 06:14:38,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:38,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:38,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145418267] [2020-12-22 06:14:38,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:14:38,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:38,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:14:38,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:38,677 INFO L87 Difference]: Start difference. First operand 5714 states and 10632 transitions. Second operand 5 states. [2020-12-22 06:14:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:40,763 INFO L93 Difference]: Finished difference Result 16111 states and 30045 transitions. [2020-12-22 06:14:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:40,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 06:14:40,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:40,783 INFO L225 Difference]: With dead ends: 16111 [2020-12-22 06:14:40,783 INFO L226 Difference]: Without dead ends: 10434 [2020-12-22 06:14:40,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:14:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2020-12-22 06:14:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 5714. [2020-12-22 06:14:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:14:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10495 transitions. [2020-12-22 06:14:41,195 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10495 transitions. Word has length 68 [2020-12-22 06:14:41,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:41,196 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10495 transitions. [2020-12-22 06:14:41,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10495 transitions. [2020-12-22 06:14:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:14:41,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:41,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:41,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:14:41,199 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 06:14:41,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:41,200 INFO L82 PathProgramCache]: Analyzing trace with hash 770168190, now seen corresponding path program 1 times [2020-12-22 06:14:41,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:41,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032754811] [2020-12-22 06:14:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:41,264 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 06:14:41,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032754811] [2020-12-22 06:14:41,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:41,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:14:41,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720526429] [2020-12-22 06:14:41,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:41,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:41,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:41,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:41,266 INFO L87 Difference]: Start difference. First operand 5714 states and 10495 transitions. Second operand 3 states. [2020-12-22 06:14:41,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:41,692 INFO L93 Difference]: Finished difference Result 13935 states and 25547 transitions. [2020-12-22 06:14:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:14:41,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:14:41,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:41,707 INFO L225 Difference]: With dead ends: 13935 [2020-12-22 06:14:41,708 INFO L226 Difference]: Without dead ends: 9803 [2020-12-22 06:14:41,716 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 06:14:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9803 states. [2020-12-22 06:14:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9803 to 9780. [2020-12-22 06:14:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9780 states. [2020-12-22 06:14:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9780 states to 9780 states and 17933 transitions. [2020-12-22 06:14:42,195 INFO L78 Accepts]: Start accepts. Automaton has 9780 states and 17933 transitions. Word has length 68 [2020-12-22 06:14:42,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:42,195 INFO L481 AbstractCegarLoop]: Abstraction has 9780 states and 17933 transitions. [2020-12-22 06:14:42,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:14:42,195 INFO L276 IsEmpty]: Start isEmpty. Operand 9780 states and 17933 transitions. [2020-12-22 06:14:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:14:42,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:42,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:42,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:14:42,198 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 06:14:42,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:42,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1092129403, now seen corresponding path program 1 times [2020-12-22 06:14:42,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:42,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363421124] [2020-12-22 06:14:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:42,278 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 06:14:42,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363421124] [2020-12-22 06:14:42,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:42,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:42,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40025324] [2020-12-22 06:14:42,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:14:42,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:14:42,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:42,285 INFO L87 Difference]: Start difference. First operand 9780 states and 17933 transitions. Second operand 5 states. [2020-12-22 06:14:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:42,920 INFO L93 Difference]: Finished difference Result 17973 states and 32914 transitions. [2020-12-22 06:14:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:14:42,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 06:14:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:42,930 INFO L225 Difference]: With dead ends: 17973 [2020-12-22 06:14:42,930 INFO L226 Difference]: Without dead ends: 9803 [2020-12-22 06:14:42,942 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 06:14:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9803 states. [2020-12-22 06:14:43,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9803 to 9780. [2020-12-22 06:14:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9780 states. [2020-12-22 06:14:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9780 states to 9780 states and 17910 transitions. [2020-12-22 06:14:43,347 INFO L78 Accepts]: Start accepts. Automaton has 9780 states and 17910 transitions. Word has length 69 [2020-12-22 06:14:43,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:43,347 INFO L481 AbstractCegarLoop]: Abstraction has 9780 states and 17910 transitions. [2020-12-22 06:14:43,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:43,347 INFO L276 IsEmpty]: Start isEmpty. Operand 9780 states and 17910 transitions. [2020-12-22 06:14:43,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:14:43,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:43,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:43,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:14:43,350 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 06:14:43,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:43,351 INFO L82 PathProgramCache]: Analyzing trace with hash -833963965, now seen corresponding path program 1 times [2020-12-22 06:14:43,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:43,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985126023] [2020-12-22 06:14:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:43,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985126023] [2020-12-22 06:14:43,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:43,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:43,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842233254] [2020-12-22 06:14:43,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:14:43,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:43,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:14:43,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:14:43,445 INFO L87 Difference]: Start difference. First operand 9780 states and 17910 transitions. Second operand 6 states. [2020-12-22 06:14:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:44,830 INFO L93 Difference]: Finished difference Result 35141 states and 64604 transitions. [2020-12-22 06:14:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:14:44,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-12-22 06:14:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:44,862 INFO L225 Difference]: With dead ends: 35141 [2020-12-22 06:14:44,862 INFO L226 Difference]: Without dead ends: 25746 [2020-12-22 06:14:44,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:14:44,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25746 states. [2020-12-22 06:14:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25746 to 20595. [2020-12-22 06:14:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20595 states. [2020-12-22 06:14:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20595 states to 20595 states and 37799 transitions. [2020-12-22 06:14:45,557 INFO L78 Accepts]: Start accepts. Automaton has 20595 states and 37799 transitions. Word has length 69 [2020-12-22 06:14:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:45,557 INFO L481 AbstractCegarLoop]: Abstraction has 20595 states and 37799 transitions. [2020-12-22 06:14:45,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:14:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 20595 states and 37799 transitions. [2020-12-22 06:14:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:14:45,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:45,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:45,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:14:45,561 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 06:14:45,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:45,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1615004440, now seen corresponding path program 1 times [2020-12-22 06:14:45,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:45,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142303007] [2020-12-22 06:14:45,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:45,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142303007] [2020-12-22 06:14:45,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:45,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:45,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278177231] [2020-12-22 06:14:45,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:14:45,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:45,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:14:45,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:14:45,649 INFO L87 Difference]: Start difference. First operand 20595 states and 37799 transitions. Second operand 6 states. [2020-12-22 06:14:48,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:48,314 INFO L93 Difference]: Finished difference Result 87663 states and 161146 transitions. [2020-12-22 06:14:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:14:48,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-12-22 06:14:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:48,411 INFO L225 Difference]: With dead ends: 87663 [2020-12-22 06:14:48,412 INFO L226 Difference]: Without dead ends: 67454 [2020-12-22 06:14:48,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:14:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67454 states. [2020-12-22 06:14:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67454 to 52267. [2020-12-22 06:14:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52267 states. [2020-12-22 06:14:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52267 states to 52267 states and 95943 transitions. [2020-12-22 06:14:50,699 INFO L78 Accepts]: Start accepts. Automaton has 52267 states and 95943 transitions. Word has length 70 [2020-12-22 06:14:50,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:50,699 INFO L481 AbstractCegarLoop]: Abstraction has 52267 states and 95943 transitions. [2020-12-22 06:14:50,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:14:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand 52267 states and 95943 transitions. [2020-12-22 06:14:50,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:14:50,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:50,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:50,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:14:50,703 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 06:14:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:50,703 INFO L82 PathProgramCache]: Analyzing trace with hash -504793112, now seen corresponding path program 1 times [2020-12-22 06:14:50,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:50,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772412311] [2020-12-22 06:14:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:50,798 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 06:14:50,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772412311] [2020-12-22 06:14:50,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:50,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:50,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442346295] [2020-12-22 06:14:50,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:14:50,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:50,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:14:50,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:14:50,800 INFO L87 Difference]: Start difference. First operand 52267 states and 95943 transitions. Second operand 6 states. [2020-12-22 06:14:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:57,518 INFO L93 Difference]: Finished difference Result 242626 states and 445501 transitions. [2020-12-22 06:14:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:14:57,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-12-22 06:14:57,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:58,039 INFO L225 Difference]: With dead ends: 242626 [2020-12-22 06:14:58,039 INFO L226 Difference]: Without dead ends: 190746 [2020-12-22 06:14:58,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:14:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190746 states. [2020-12-22 06:15:04,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190746 to 145635. [2020-12-22 06:15:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145635 states. [2020-12-22 06:15:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145635 states to 145635 states and 267100 transitions. [2020-12-22 06:15:04,958 INFO L78 Accepts]: Start accepts. Automaton has 145635 states and 267100 transitions. Word has length 71 [2020-12-22 06:15:04,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:15:04,958 INFO L481 AbstractCegarLoop]: Abstraction has 145635 states and 267100 transitions. [2020-12-22 06:15:04,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:15:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 145635 states and 267100 transitions. [2020-12-22 06:15:04,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:15:04,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:15:04,964 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] [2020-12-22 06:15:04,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:15:04,964 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 06:15:04,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:15:04,969 INFO L82 PathProgramCache]: Analyzing trace with hash -895318035, now seen corresponding path program 1 times [2020-12-22 06:15:04,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:15:04,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182737067] [2020-12-22 06:15:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:15:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:15:05,065 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 06:15:05,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182737067] [2020-12-22 06:15:05,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:15:05,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:15:05,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28708430] [2020-12-22 06:15:05,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:15:05,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:15:05,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:15:05,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:15:05,068 INFO L87 Difference]: Start difference. First operand 145635 states and 267100 transitions. Second operand 6 states. [2020-12-22 06:15:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:15:23,373 INFO L93 Difference]: Finished difference Result 701969 states and 1287297 transitions. [2020-12-22 06:15:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:15:23,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-12-22 06:15:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:15:24,903 INFO L225 Difference]: With dead ends: 701969 [2020-12-22 06:15:24,904 INFO L226 Difference]: Without dead ends: 556722 [2020-12-22 06:15:25,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:15:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556722 states. [2020-12-22 06:15:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556722 to 422271. [2020-12-22 06:15:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422271 states. [2020-12-22 06:15:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422271 states to 422271 states and 773651 transitions. [2020-12-22 06:15:44,580 INFO L78 Accepts]: Start accepts. Automaton has 422271 states and 773651 transitions. Word has length 72 [2020-12-22 06:15:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:15:44,580 INFO L481 AbstractCegarLoop]: Abstraction has 422271 states and 773651 transitions. [2020-12-22 06:15:44,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:15:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 422271 states and 773651 transitions. [2020-12-22 06:15:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:15:44,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:15:44,600 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] [2020-12-22 06:15:44,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:15:44,600 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 06:15:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:15:44,602 INFO L82 PathProgramCache]: Analyzing trace with hash -564026483, now seen corresponding path program 1 times [2020-12-22 06:15:44,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:15:44,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821637902] [2020-12-22 06:15:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:15:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:15:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:15:44,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821637902] [2020-12-22 06:15:44,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:15:44,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:15:44,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156887329] [2020-12-22 06:15:44,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:15:44,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:15:44,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:15:44,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:15:44,751 INFO L87 Difference]: Start difference. First operand 422271 states and 773651 transitions. Second operand 6 states. [2020-12-22 06:16:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:16:44,355 INFO L93 Difference]: Finished difference Result 2067956 states and 3788193 transitions. [2020-12-22 06:16:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:16:44,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-12-22 06:16:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:16:50,298 INFO L225 Difference]: With dead ends: 2067956 [2020-12-22 06:16:50,298 INFO L226 Difference]: Without dead ends: 1646074 [2020-12-22 06:16:50,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:16:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646074 states.