/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_spec2_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:04:55,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:04:55,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:04:55,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:04:55,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:04:55,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:04:55,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:04:55,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:04:55,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:04:55,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:04:55,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:04:55,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:04:55,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:04:55,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:04:55,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:04:55,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:04:55,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:04:55,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:04:55,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:04:55,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:04:56,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:04:56,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:04:56,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:04:56,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:04:56,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:04:56,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:04:56,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:04:56,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:04:56,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:04:56,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:04:56,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:04:56,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:04:56,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:04:56,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:04:56,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:04:56,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:04:56,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:04:56,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:04:56,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:04:56,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:04:56,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:04:56,117 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:04:56,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:04:56,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:04:56,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:04:56,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:04:56,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:04:56,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:04:56,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:04:56,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:04:56,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:04:56,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:04:56,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:04:56,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:04:56,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:04:56,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:04:56,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:04:56,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:04:56,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:04:56,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:04:56,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:04:56,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:04:56,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:04:56,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:04:56,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:04:56,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:04:56,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:04:56,605 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:04:56,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2020-12-22 06:04:56,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84da5cc3d/949eb67e28034b3387f2178e85d957fc/FLAG8052db76f [2020-12-22 06:04:57,611 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:04:57,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2020-12-22 06:04:57,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84da5cc3d/949eb67e28034b3387f2178e85d957fc/FLAG8052db76f [2020-12-22 06:04:57,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84da5cc3d/949eb67e28034b3387f2178e85d957fc [2020-12-22 06:04:57,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:04:57,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:04:57,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:04:57,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:04:57,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:04:57,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:04:57" (1/1) ... [2020-12-22 06:04:57,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143f37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:57, skipping insertion in model container [2020-12-22 06:04:57,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:04:57" (1/1) ... [2020-12-22 06:04:57,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:04:57,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:04:58,388 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_spec2_product20.cil.c[38121,38134] [2020-12-22 06:04:58,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:04:58,667 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:04:58,829 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_spec2_product20.cil.c[38121,38134] [2020-12-22 06:04:58,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:04:58,957 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:04:58,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58 WrapperNode [2020-12-22 06:04:58,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:04:58,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:04:58,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:04:58,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:04:58,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (1/1) ... [2020-12-22 06:04:59,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (1/1) ... [2020-12-22 06:04:59,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:04:59,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:04:59,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:04:59,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:04:59,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (1/1) ... [2020-12-22 06:04:59,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (1/1) ... [2020-12-22 06:04:59,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (1/1) ... [2020-12-22 06:04:59,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (1/1) ... [2020-12-22 06:04:59,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (1/1) ... [2020-12-22 06:04:59,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (1/1) ... [2020-12-22 06:04:59,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (1/1) ... [2020-12-22 06:05:00,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:05:00,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:05:00,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:05:00,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:05:00,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (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 06:05:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:05:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:05:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:05:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:05:10,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:05:10,372 INFO L299 CfgBuilder]: Removed 1149 assume(true) statements. [2020-12-22 06:05:10,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:05:10 BoogieIcfgContainer [2020-12-22 06:05:10,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:05:10,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:05:10,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:05:10,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:05:10,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:04:57" (1/3) ... [2020-12-22 06:05:10,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2397e4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:05:10, skipping insertion in model container [2020-12-22 06:05:10,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:58" (2/3) ... [2020-12-22 06:05:10,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2397e4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:05:10, skipping insertion in model container [2020-12-22 06:05:10,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:05:10" (3/3) ... [2020-12-22 06:05:10,396 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c [2020-12-22 06:05:10,405 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:05:10,413 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:05:10,435 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:05:10,495 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:05:10,495 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:05:10,496 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:05:10,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:05:10,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:05:10,496 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:05:10,496 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:05:10,496 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:05:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4828 states. [2020-12-22 06:05:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 06:05:10,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:10,589 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] [2020-12-22 06:05:10,590 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 06:05:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1738101589, now seen corresponding path program 1 times [2020-12-22 06:05:10,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:10,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848207405] [2020-12-22 06:05:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:11,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848207405] [2020-12-22 06:05:11,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:11,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:11,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749744101] [2020-12-22 06:05:11,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:11,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:11,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:11,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:11,084 INFO L87 Difference]: Start difference. First operand 4828 states. Second operand 3 states. [2020-12-22 06:05:11,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:11,470 INFO L93 Difference]: Finished difference Result 9647 states and 18217 transitions. [2020-12-22 06:05:11,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:11,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 06:05:11,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:11,524 INFO L225 Difference]: With dead ends: 9647 [2020-12-22 06:05:11,524 INFO L226 Difference]: Without dead ends: 4824 [2020-12-22 06:05:11,540 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 06:05:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2020-12-22 06:05:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 4824. [2020-12-22 06:05:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4824 states. [2020-12-22 06:05:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 9099 transitions. [2020-12-22 06:05:11,768 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 9099 transitions. Word has length 27 [2020-12-22 06:05:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:11,769 INFO L481 AbstractCegarLoop]: Abstraction has 4824 states and 9099 transitions. [2020-12-22 06:05:11,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 9099 transitions. [2020-12-22 06:05:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:05:11,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:11,772 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 06:05:11,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:05:11,773 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 06:05:11,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:11,774 INFO L82 PathProgramCache]: Analyzing trace with hash -2103046779, now seen corresponding path program 1 times [2020-12-22 06:05:11,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:11,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718740210] [2020-12-22 06:05:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:11,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718740210] [2020-12-22 06:05:11,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:11,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:05:11,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136632598] [2020-12-22 06:05:11,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:05:11,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:05:11,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:05:11,918 INFO L87 Difference]: Start difference. First operand 4824 states and 9099 transitions. Second operand 6 states. [2020-12-22 06:05:12,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:12,452 INFO L93 Difference]: Finished difference Result 9599 states and 18114 transitions. [2020-12-22 06:05:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:05:12,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-12-22 06:05:12,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:12,482 INFO L225 Difference]: With dead ends: 9599 [2020-12-22 06:05:12,483 INFO L226 Difference]: Without dead ends: 4818 [2020-12-22 06:05:12,495 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 06:05:12,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2020-12-22 06:05:12,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 4818. [2020-12-22 06:05:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-12-22 06:05:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 9086 transitions. [2020-12-22 06:05:12,688 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 9086 transitions. Word has length 34 [2020-12-22 06:05:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:12,689 INFO L481 AbstractCegarLoop]: Abstraction has 4818 states and 9086 transitions. [2020-12-22 06:05:12,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:05:12,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 9086 transitions. [2020-12-22 06:05:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 06:05:12,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:12,695 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 06:05:12,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:05:12,698 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 06:05:12,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:12,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1062223965, now seen corresponding path program 1 times [2020-12-22 06:05:12,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:12,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729744826] [2020-12-22 06:05:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:12,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729744826] [2020-12-22 06:05:12,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:12,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:12,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524750203] [2020-12-22 06:05:12,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:12,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:12,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:12,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:12,876 INFO L87 Difference]: Start difference. First operand 4818 states and 9086 transitions. Second operand 4 states. [2020-12-22 06:05:13,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:13,257 INFO L93 Difference]: Finished difference Result 9593 states and 18101 transitions. [2020-12-22 06:05:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:13,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 06:05:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:13,288 INFO L225 Difference]: With dead ends: 9593 [2020-12-22 06:05:13,289 INFO L226 Difference]: Without dead ends: 4818 [2020-12-22 06:05:13,299 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 06:05:13,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2020-12-22 06:05:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 4818. [2020-12-22 06:05:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-12-22 06:05:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 9082 transitions. [2020-12-22 06:05:13,495 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 9082 transitions. Word has length 35 [2020-12-22 06:05:13,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:13,496 INFO L481 AbstractCegarLoop]: Abstraction has 4818 states and 9082 transitions. [2020-12-22 06:05:13,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 9082 transitions. [2020-12-22 06:05:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:05:13,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:13,498 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 06:05:13,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:05:13,499 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 06:05:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1679843608, now seen corresponding path program 1 times [2020-12-22 06:05:13,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:13,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044760434] [2020-12-22 06:05:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:13,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044760434] [2020-12-22 06:05:13,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:13,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:13,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170700908] [2020-12-22 06:05:13,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:13,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:13,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:13,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:13,569 INFO L87 Difference]: Start difference. First operand 4818 states and 9082 transitions. Second operand 4 states. [2020-12-22 06:05:13,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:13,891 INFO L93 Difference]: Finished difference Result 9593 states and 18097 transitions. [2020-12-22 06:05:13,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:13,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 06:05:13,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:13,921 INFO L225 Difference]: With dead ends: 9593 [2020-12-22 06:05:13,921 INFO L226 Difference]: Without dead ends: 4818 [2020-12-22 06:05:13,932 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 06:05:13,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2020-12-22 06:05:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 4818. [2020-12-22 06:05:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-12-22 06:05:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 9078 transitions. [2020-12-22 06:05:14,297 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 9078 transitions. Word has length 36 [2020-12-22 06:05:14,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:14,297 INFO L481 AbstractCegarLoop]: Abstraction has 4818 states and 9078 transitions. [2020-12-22 06:05:14,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 9078 transitions. [2020-12-22 06:05:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:05:14,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:14,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:14,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:05:14,303 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 06:05:14,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:14,303 INFO L82 PathProgramCache]: Analyzing trace with hash 721391880, now seen corresponding path program 1 times [2020-12-22 06:05:14,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:14,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497809893] [2020-12-22 06:05:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:14,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497809893] [2020-12-22 06:05:14,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:14,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:14,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444557902] [2020-12-22 06:05:14,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:14,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:14,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:14,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:14,409 INFO L87 Difference]: Start difference. First operand 4818 states and 9078 transitions. Second operand 4 states. [2020-12-22 06:05:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:14,786 INFO L93 Difference]: Finished difference Result 9593 states and 18093 transitions. [2020-12-22 06:05:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:14,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:05:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:14,835 INFO L225 Difference]: With dead ends: 9593 [2020-12-22 06:05:14,836 INFO L226 Difference]: Without dead ends: 4818 [2020-12-22 06:05:14,846 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 06:05:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2020-12-22 06:05:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 4818. [2020-12-22 06:05:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2020-12-22 06:05:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 9074 transitions. [2020-12-22 06:05:15,083 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 9074 transitions. Word has length 37 [2020-12-22 06:05:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:15,083 INFO L481 AbstractCegarLoop]: Abstraction has 4818 states and 9074 transitions. [2020-12-22 06:05:15,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 9074 transitions. [2020-12-22 06:05:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:05:15,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:15,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:15,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:05:15,089 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 06:05:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:15,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1924754824, now seen corresponding path program 1 times [2020-12-22 06:05:15,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:15,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886290516] [2020-12-22 06:05:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:15,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886290516] [2020-12-22 06:05:15,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:15,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:15,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515323298] [2020-12-22 06:05:15,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:15,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:15,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:15,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:15,197 INFO L87 Difference]: Start difference. First operand 4818 states and 9074 transitions. Second operand 4 states. [2020-12-22 06:05:15,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:15,500 INFO L93 Difference]: Finished difference Result 9593 states and 18089 transitions. [2020-12-22 06:05:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:15,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:05:15,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:15,519 INFO L225 Difference]: With dead ends: 9593 [2020-12-22 06:05:15,520 INFO L226 Difference]: Without dead ends: 4797 [2020-12-22 06:05:15,532 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 06:05:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2020-12-22 06:05:15,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4797. [2020-12-22 06:05:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-12-22 06:05:15,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 9040 transitions. [2020-12-22 06:05:15,798 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 9040 transitions. Word has length 37 [2020-12-22 06:05:15,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:15,798 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 9040 transitions. [2020-12-22 06:05:15,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 9040 transitions. [2020-12-22 06:05:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:05:15,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:15,800 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 06:05:15,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:05:15,801 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 06:05:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:15,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2077111379, now seen corresponding path program 1 times [2020-12-22 06:05:15,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:15,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859308289] [2020-12-22 06:05:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:15,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859308289] [2020-12-22 06:05:15,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:15,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:15,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945090596] [2020-12-22 06:05:15,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:15,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:15,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:15,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:15,921 INFO L87 Difference]: Start difference. First operand 4797 states and 9040 transitions. Second operand 4 states. [2020-12-22 06:05:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:16,289 INFO L93 Difference]: Finished difference Result 9572 states and 18055 transitions. [2020-12-22 06:05:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:16,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-22 06:05:16,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:16,303 INFO L225 Difference]: With dead ends: 9572 [2020-12-22 06:05:16,303 INFO L226 Difference]: Without dead ends: 4797 [2020-12-22 06:05:16,311 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 06:05:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2020-12-22 06:05:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4797. [2020-12-22 06:05:16,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-12-22 06:05:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 9039 transitions. [2020-12-22 06:05:16,509 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 9039 transitions. Word has length 38 [2020-12-22 06:05:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:16,509 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 9039 transitions. [2020-12-22 06:05:16,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 9039 transitions. [2020-12-22 06:05:16,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:05:16,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:16,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:16,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:05:16,511 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 06:05:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:16,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1436208749, now seen corresponding path program 1 times [2020-12-22 06:05:16,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:16,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397530946] [2020-12-22 06:05:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:16,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397530946] [2020-12-22 06:05:16,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:16,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:16,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667536367] [2020-12-22 06:05:16,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:16,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:16,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:16,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:16,579 INFO L87 Difference]: Start difference. First operand 4797 states and 9039 transitions. Second operand 4 states. [2020-12-22 06:05:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:16,830 INFO L93 Difference]: Finished difference Result 9572 states and 18054 transitions. [2020-12-22 06:05:16,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:16,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-12-22 06:05:16,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:16,846 INFO L225 Difference]: With dead ends: 9572 [2020-12-22 06:05:16,846 INFO L226 Difference]: Without dead ends: 4797 [2020-12-22 06:05:16,857 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 06:05:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2020-12-22 06:05:17,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4797. [2020-12-22 06:05:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-12-22 06:05:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 9038 transitions. [2020-12-22 06:05:17,055 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 9038 transitions. Word has length 39 [2020-12-22 06:05:17,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:17,055 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 9038 transitions. [2020-12-22 06:05:17,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:17,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 9038 transitions. [2020-12-22 06:05:17,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 06:05:17,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:17,057 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 06:05:17,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:05:17,057 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 06:05:17,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:17,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1247409038, now seen corresponding path program 1 times [2020-12-22 06:05:17,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:17,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126112785] [2020-12-22 06:05:17,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:17,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126112785] [2020-12-22 06:05:17,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:17,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:05:17,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009028647] [2020-12-22 06:05:17,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:05:17,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:17,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:05:17,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:05:17,139 INFO L87 Difference]: Start difference. First operand 4797 states and 9038 transitions. Second operand 7 states. [2020-12-22 06:05:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:17,470 INFO L93 Difference]: Finished difference Result 9566 states and 18042 transitions. [2020-12-22 06:05:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:05:17,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-12-22 06:05:17,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:17,485 INFO L225 Difference]: With dead ends: 9566 [2020-12-22 06:05:17,486 INFO L226 Difference]: Without dead ends: 4797 [2020-12-22 06:05:17,495 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 06:05:17,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2020-12-22 06:05:17,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4797. [2020-12-22 06:05:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-12-22 06:05:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 9037 transitions. [2020-12-22 06:05:17,683 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 9037 transitions. Word has length 40 [2020-12-22 06:05:17,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:17,684 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 9037 transitions. [2020-12-22 06:05:17,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:05:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 9037 transitions. [2020-12-22 06:05:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 06:05:17,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:17,685 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] [2020-12-22 06:05:17,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:05:17,685 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 06:05:17,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:17,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1433636002, now seen corresponding path program 1 times [2020-12-22 06:05:17,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:17,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21863026] [2020-12-22 06:05:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:17,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21863026] [2020-12-22 06:05:17,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:17,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:05:17,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120204178] [2020-12-22 06:05:17,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:17,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:17,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:17,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:17,762 INFO L87 Difference]: Start difference. First operand 4797 states and 9037 transitions. Second operand 3 states. [2020-12-22 06:05:18,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:18,354 INFO L93 Difference]: Finished difference Result 11285 states and 21295 transitions. [2020-12-22 06:05:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:18,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 06:05:18,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:18,385 INFO L225 Difference]: With dead ends: 11285 [2020-12-22 06:05:18,386 INFO L226 Difference]: Without dead ends: 8846 [2020-12-22 06:05:18,394 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 06:05:18,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8846 states. [2020-12-22 06:05:18,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8846 to 6747. [2020-12-22 06:05:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6747 states. [2020-12-22 06:05:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6747 states to 6747 states and 12709 transitions. [2020-12-22 06:05:18,768 INFO L78 Accepts]: Start accepts. Automaton has 6747 states and 12709 transitions. Word has length 41 [2020-12-22 06:05:18,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:18,768 INFO L481 AbstractCegarLoop]: Abstraction has 6747 states and 12709 transitions. [2020-12-22 06:05:18,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6747 states and 12709 transitions. [2020-12-22 06:05:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:05:18,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:18,773 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 06:05:18,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:05:18,774 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 06:05:18,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:18,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1931969883, now seen corresponding path program 1 times [2020-12-22 06:05:18,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:18,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488607159] [2020-12-22 06:05:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:18,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:18,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488607159] [2020-12-22 06:05:18,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:18,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:18,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877792956] [2020-12-22 06:05:18,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:18,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:18,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:18,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:18,855 INFO L87 Difference]: Start difference. First operand 6747 states and 12709 transitions. Second operand 5 states. [2020-12-22 06:05:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:19,489 INFO L93 Difference]: Finished difference Result 13421 states and 25104 transitions. [2020-12-22 06:05:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:05:19,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 06:05:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:19,513 INFO L225 Difference]: With dead ends: 13421 [2020-12-22 06:05:19,513 INFO L226 Difference]: Without dead ends: 7868 [2020-12-22 06:05:19,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:05:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7868 states. [2020-12-22 06:05:19,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7868 to 5552. [2020-12-22 06:05:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5552 states. [2020-12-22 06:05:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5552 states to 5552 states and 10391 transitions. [2020-12-22 06:05:19,835 INFO L78 Accepts]: Start accepts. Automaton has 5552 states and 10391 transitions. Word has length 60 [2020-12-22 06:05:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:19,835 INFO L481 AbstractCegarLoop]: Abstraction has 5552 states and 10391 transitions. [2020-12-22 06:05:19,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5552 states and 10391 transitions. [2020-12-22 06:05:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:05:19,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:19,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:19,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:05:19,838 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 06:05:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1151522959, now seen corresponding path program 1 times [2020-12-22 06:05:19,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:19,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493201901] [2020-12-22 06:05:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:19,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493201901] [2020-12-22 06:05:19,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:19,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:05:19,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005968093] [2020-12-22 06:05:19,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:05:19,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:19,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:05:19,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:05:19,937 INFO L87 Difference]: Start difference. First operand 5552 states and 10391 transitions. Second operand 7 states. [2020-12-22 06:05:25,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:25,209 INFO L93 Difference]: Finished difference Result 21771 states and 40671 transitions. [2020-12-22 06:05:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 06:05:25,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-12-22 06:05:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:25,260 INFO L225 Difference]: With dead ends: 21771 [2020-12-22 06:05:25,260 INFO L226 Difference]: Without dead ends: 16256 [2020-12-22 06:05:25,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-12-22 06:05:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16256 states. [2020-12-22 06:05:25,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16256 to 7175. [2020-12-22 06:05:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2020-12-22 06:05:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 13168 transitions. [2020-12-22 06:05:25,797 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 13168 transitions. Word has length 61 [2020-12-22 06:05:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:25,797 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 13168 transitions. [2020-12-22 06:05:25,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:05:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 13168 transitions. [2020-12-22 06:05:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:05:25,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:25,800 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] [2020-12-22 06:05:25,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:05:25,800 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 06:05:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:25,801 INFO L82 PathProgramCache]: Analyzing trace with hash -706392859, now seen corresponding path program 1 times [2020-12-22 06:05:25,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:25,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365900276] [2020-12-22 06:05:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:25,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365900276] [2020-12-22 06:05:25,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:25,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:25,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929112183] [2020-12-22 06:05:25,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:25,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:25,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:25,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:25,921 INFO L87 Difference]: Start difference. First operand 7175 states and 13168 transitions. Second operand 4 states. [2020-12-22 06:05:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:27,630 INFO L93 Difference]: Finished difference Result 19795 states and 36590 transitions. [2020-12-22 06:05:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:27,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 06:05:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:27,666 INFO L225 Difference]: With dead ends: 19795 [2020-12-22 06:05:27,666 INFO L226 Difference]: Without dead ends: 12657 [2020-12-22 06:05:27,684 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 06:05:27,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12657 states. [2020-12-22 06:05:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12657 to 7175. [2020-12-22 06:05:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2020-12-22 06:05:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 13143 transitions. [2020-12-22 06:05:28,183 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 13143 transitions. Word has length 63 [2020-12-22 06:05:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:28,183 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 13143 transitions. [2020-12-22 06:05:28,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 13143 transitions. [2020-12-22 06:05:28,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:05:28,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:28,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:28,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:05:28,186 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 06:05:28,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:28,186 INFO L82 PathProgramCache]: Analyzing trace with hash 332662951, now seen corresponding path program 1 times [2020-12-22 06:05:28,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:28,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567344704] [2020-12-22 06:05:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:28,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567344704] [2020-12-22 06:05:28,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:28,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:28,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093824634] [2020-12-22 06:05:28,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:28,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:28,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:28,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:28,275 INFO L87 Difference]: Start difference. First operand 7175 states and 13143 transitions. Second operand 4 states. [2020-12-22 06:05:29,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:29,901 INFO L93 Difference]: Finished difference Result 19795 states and 36541 transitions. [2020-12-22 06:05:29,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:29,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 06:05:29,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:29,933 INFO L225 Difference]: With dead ends: 19795 [2020-12-22 06:05:29,933 INFO L226 Difference]: Without dead ends: 12657 [2020-12-22 06:05:29,947 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 06:05:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12657 states. [2020-12-22 06:05:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12657 to 7175. [2020-12-22 06:05:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2020-12-22 06:05:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 13118 transitions. [2020-12-22 06:05:30,424 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 13118 transitions. Word has length 65 [2020-12-22 06:05:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:30,425 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 13118 transitions. [2020-12-22 06:05:30,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 13118 transitions. [2020-12-22 06:05:30,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:05:30,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:30,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:30,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:05:30,428 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 06:05:30,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:30,429 INFO L82 PathProgramCache]: Analyzing trace with hash 211740485, now seen corresponding path program 1 times [2020-12-22 06:05:30,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:30,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859273468] [2020-12-22 06:05:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:30,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859273468] [2020-12-22 06:05:30,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:30,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:30,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87784815] [2020-12-22 06:05:30,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:30,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:30,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:30,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:30,531 INFO L87 Difference]: Start difference. First operand 7175 states and 13118 transitions. Second operand 4 states. [2020-12-22 06:05:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:32,101 INFO L93 Difference]: Finished difference Result 19795 states and 36492 transitions. [2020-12-22 06:05:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:32,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 06:05:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:32,124 INFO L225 Difference]: With dead ends: 19795 [2020-12-22 06:05:32,124 INFO L226 Difference]: Without dead ends: 12657 [2020-12-22 06:05:32,136 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 06:05:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12657 states. [2020-12-22 06:05:32,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12657 to 7175. [2020-12-22 06:05:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2020-12-22 06:05:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 13093 transitions. [2020-12-22 06:05:32,612 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 13093 transitions. Word has length 67 [2020-12-22 06:05:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:32,613 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 13093 transitions. [2020-12-22 06:05:32,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:32,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 13093 transitions. [2020-12-22 06:05:32,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:05:32,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:32,616 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 06:05:32,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:05:32,617 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 06:05:32,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:32,617 INFO L82 PathProgramCache]: Analyzing trace with hash -88956517, now seen corresponding path program 1 times [2020-12-22 06:05:32,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:32,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122881201] [2020-12-22 06:05:32,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:32,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122881201] [2020-12-22 06:05:32,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:32,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:32,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855015622] [2020-12-22 06:05:32,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:32,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:32,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:32,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:32,719 INFO L87 Difference]: Start difference. First operand 7175 states and 13093 transitions. Second operand 5 states. [2020-12-22 06:05:35,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:35,732 INFO L93 Difference]: Finished difference Result 41332 states and 76248 transitions. [2020-12-22 06:05:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:05:35,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 06:05:35,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:35,793 INFO L225 Difference]: With dead ends: 41332 [2020-12-22 06:05:35,794 INFO L226 Difference]: Without dead ends: 36906 [2020-12-22 06:05:35,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:05:35,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36906 states. [2020-12-22 06:05:36,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36906 to 7223. [2020-12-22 06:05:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7223 states. [2020-12-22 06:05:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7223 states to 7223 states and 13141 transitions. [2020-12-22 06:05:36,654 INFO L78 Accepts]: Start accepts. Automaton has 7223 states and 13141 transitions. Word has length 69 [2020-12-22 06:05:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:36,655 INFO L481 AbstractCegarLoop]: Abstraction has 7223 states and 13141 transitions. [2020-12-22 06:05:36,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 7223 states and 13141 transitions. [2020-12-22 06:05:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:05:36,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:36,658 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 06:05:36,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:05:36,658 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 06:05:36,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:36,658 INFO L82 PathProgramCache]: Analyzing trace with hash -307811235, now seen corresponding path program 1 times [2020-12-22 06:05:36,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:36,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707494251] [2020-12-22 06:05:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:36,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707494251] [2020-12-22 06:05:36,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:36,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:36,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708086090] [2020-12-22 06:05:36,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:36,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:36,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:36,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:36,729 INFO L87 Difference]: Start difference. First operand 7223 states and 13141 transitions. Second operand 3 states. [2020-12-22 06:05:37,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:37,167 INFO L93 Difference]: Finished difference Result 17393 states and 31748 transitions. [2020-12-22 06:05:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:37,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:05:37,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:37,182 INFO L225 Difference]: With dead ends: 17393 [2020-12-22 06:05:37,182 INFO L226 Difference]: Without dead ends: 11519 [2020-12-22 06:05:37,189 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 06:05:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11519 states. [2020-12-22 06:05:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11519 to 11519. [2020-12-22 06:05:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11519 states. [2020-12-22 06:05:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11519 states to 11519 states and 21077 transitions. [2020-12-22 06:05:37,788 INFO L78 Accepts]: Start accepts. Automaton has 11519 states and 21077 transitions. Word has length 69 [2020-12-22 06:05:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:37,788 INFO L481 AbstractCegarLoop]: Abstraction has 11519 states and 21077 transitions. [2020-12-22 06:05:37,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 11519 states and 21077 transitions. [2020-12-22 06:05:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:05:37,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:37,792 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 06:05:37,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:05:37,792 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 06:05:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1486233911, now seen corresponding path program 1 times [2020-12-22 06:05:37,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:37,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418294353] [2020-12-22 06:05:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:37,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418294353] [2020-12-22 06:05:37,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:37,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:37,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597084966] [2020-12-22 06:05:37,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:37,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:37,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:37,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:37,867 INFO L87 Difference]: Start difference. First operand 11519 states and 21077 transitions. Second operand 3 states. [2020-12-22 06:05:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:38,626 INFO L93 Difference]: Finished difference Result 29562 states and 54184 transitions. [2020-12-22 06:05:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:38,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 06:05:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:38,655 INFO L225 Difference]: With dead ends: 29562 [2020-12-22 06:05:38,655 INFO L226 Difference]: Without dead ends: 20003 [2020-12-22 06:05:38,669 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 06:05:38,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20003 states. [2020-12-22 06:05:39,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20003 to 20001. [2020-12-22 06:05:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20001 states. [2020-12-22 06:05:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20001 states to 20001 states and 36738 transitions. [2020-12-22 06:05:39,586 INFO L78 Accepts]: Start accepts. Automaton has 20001 states and 36738 transitions. Word has length 71 [2020-12-22 06:05:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:39,587 INFO L481 AbstractCegarLoop]: Abstraction has 20001 states and 36738 transitions. [2020-12-22 06:05:39,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:39,587 INFO L276 IsEmpty]: Start isEmpty. Operand 20001 states and 36738 transitions. [2020-12-22 06:05:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:05:39,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:39,590 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 06:05:39,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:05:39,590 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 06:05:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:39,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1939004844, now seen corresponding path program 1 times [2020-12-22 06:05:39,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:39,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737706607] [2020-12-22 06:05:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:39,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737706607] [2020-12-22 06:05:39,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:39,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:39,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411654102] [2020-12-22 06:05:39,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:39,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:39,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:39,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:39,659 INFO L87 Difference]: Start difference. First operand 20001 states and 36738 transitions. Second operand 3 states. [2020-12-22 06:05:41,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:41,046 INFO L93 Difference]: Finished difference Result 53668 states and 98613 transitions. [2020-12-22 06:05:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:41,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:05:41,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:41,096 INFO L225 Difference]: With dead ends: 53668 [2020-12-22 06:05:41,096 INFO L226 Difference]: Without dead ends: 36738 [2020-12-22 06:05:41,118 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 06:05:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36738 states. [2020-12-22 06:05:42,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36738 to 36734. [2020-12-22 06:05:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36734 states. [2020-12-22 06:05:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36734 states to 36734 states and 67616 transitions. [2020-12-22 06:05:42,698 INFO L78 Accepts]: Start accepts. Automaton has 36734 states and 67616 transitions. Word has length 72 [2020-12-22 06:05:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:42,698 INFO L481 AbstractCegarLoop]: Abstraction has 36734 states and 67616 transitions. [2020-12-22 06:05:42,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 36734 states and 67616 transitions. [2020-12-22 06:05:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:05:42,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:42,702 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, 1, 1] [2020-12-22 06:05:42,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:05:42,703 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 06:05:42,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:42,704 INFO L82 PathProgramCache]: Analyzing trace with hash -20362850, now seen corresponding path program 1 times [2020-12-22 06:05:42,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:42,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012851325] [2020-12-22 06:05:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:42,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012851325] [2020-12-22 06:05:42,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:42,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:42,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683246731] [2020-12-22 06:05:42,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:42,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:42,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:42,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:42,813 INFO L87 Difference]: Start difference. First operand 36734 states and 67616 transitions. Second operand 3 states. [2020-12-22 06:05:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:45,342 INFO L93 Difference]: Finished difference Result 101392 states and 186536 transitions. [2020-12-22 06:05:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:45,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 06:05:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:45,462 INFO L225 Difference]: With dead ends: 101392 [2020-12-22 06:05:45,463 INFO L226 Difference]: Without dead ends: 69733 [2020-12-22 06:05:45,500 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 06:05:45,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69733 states. [2020-12-22 06:05:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69733 to 69727. [2020-12-22 06:05:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69727 states. [2020-12-22 06:05:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69727 states to 69727 states and 128462 transitions. [2020-12-22 06:05:48,566 INFO L78 Accepts]: Start accepts. Automaton has 69727 states and 128462 transitions. Word has length 73 [2020-12-22 06:05:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:48,567 INFO L481 AbstractCegarLoop]: Abstraction has 69727 states and 128462 transitions. [2020-12-22 06:05:48,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:48,567 INFO L276 IsEmpty]: Start isEmpty. Operand 69727 states and 128462 transitions. [2020-12-22 06:05:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:05:48,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:48,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:48,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:05:48,570 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 06:05:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:48,576 INFO L82 PathProgramCache]: Analyzing trace with hash -631219211, now seen corresponding path program 1 times [2020-12-22 06:05:48,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:48,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137703015] [2020-12-22 06:05:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:48,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137703015] [2020-12-22 06:05:48,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:48,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:48,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374427384] [2020-12-22 06:05:48,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:48,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:48,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:48,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:48,851 INFO L87 Difference]: Start difference. First operand 69727 states and 128462 transitions. Second operand 3 states. [2020-12-22 06:05:54,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:54,569 INFO L93 Difference]: Finished difference Result 195840 states and 360462 transitions. [2020-12-22 06:05:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:54,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 06:05:54,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:54,990 INFO L225 Difference]: With dead ends: 195840 [2020-12-22 06:05:54,991 INFO L226 Difference]: Without dead ends: 134759 [2020-12-22 06:05:55,054 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 06:05:55,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134759 states. [2020-12-22 06:06:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134759 to 134751. [2020-12-22 06:06:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134751 states. [2020-12-22 06:06:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134751 states to 134751 states and 248285 transitions. [2020-12-22 06:06:01,170 INFO L78 Accepts]: Start accepts. Automaton has 134751 states and 248285 transitions. Word has length 74 [2020-12-22 06:06:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:01,170 INFO L481 AbstractCegarLoop]: Abstraction has 134751 states and 248285 transitions. [2020-12-22 06:06:01,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 134751 states and 248285 transitions. [2020-12-22 06:06:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 06:06:01,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:01,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:01,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:06:01,194 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 06:06:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:01,194 INFO L82 PathProgramCache]: Analyzing trace with hash 950752177, now seen corresponding path program 1 times [2020-12-22 06:06:01,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:01,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006763057] [2020-12-22 06:06:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:01,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006763057] [2020-12-22 06:06:01,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:01,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:01,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170550305] [2020-12-22 06:06:01,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:01,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:01,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:01,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:01,265 INFO L87 Difference]: Start difference. First operand 134751 states and 248285 transitions. Second operand 4 states. [2020-12-22 06:06:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:08,838 INFO L93 Difference]: Finished difference Result 299571 states and 547572 transitions. [2020-12-22 06:06:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:06:08,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-12-22 06:06:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:09,173 INFO L225 Difference]: With dead ends: 299571 [2020-12-22 06:06:09,174 INFO L226 Difference]: Without dead ends: 165051 [2020-12-22 06:06:09,483 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 06:06:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165051 states. [2020-12-22 06:06:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165051 to 135017. [2020-12-22 06:06:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135017 states. [2020-12-22 06:06:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135017 states to 135017 states and 248551 transitions. [2020-12-22 06:06:15,620 INFO L78 Accepts]: Start accepts. Automaton has 135017 states and 248551 transitions. Word has length 108 [2020-12-22 06:06:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:15,621 INFO L481 AbstractCegarLoop]: Abstraction has 135017 states and 248551 transitions. [2020-12-22 06:06:15,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 135017 states and 248551 transitions. [2020-12-22 06:06:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:06:15,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:15,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:15,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:06:15,643 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 06:06:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:15,643 INFO L82 PathProgramCache]: Analyzing trace with hash -118806511, now seen corresponding path program 1 times [2020-12-22 06:06:15,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:15,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452845815] [2020-12-22 06:06:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:16,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452845815] [2020-12-22 06:06:16,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:16,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:16,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679291055] [2020-12-22 06:06:16,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:06:16,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:16,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:06:16,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:16,023 INFO L87 Difference]: Start difference. First operand 135017 states and 248551 transitions. Second operand 5 states. [2020-12-22 06:06:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:33,960 INFO L93 Difference]: Finished difference Result 542542 states and 997216 transitions. [2020-12-22 06:06:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:06:33,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 06:06:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:35,128 INFO L225 Difference]: With dead ends: 542542 [2020-12-22 06:06:35,128 INFO L226 Difference]: Without dead ends: 407583 [2020-12-22 06:06:35,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:06:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407583 states. [2020-12-22 06:06:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407583 to 135481. [2020-12-22 06:06:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135481 states. [2020-12-22 06:06:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135481 states to 135481 states and 249015 transitions. [2020-12-22 06:06:44,156 INFO L78 Accepts]: Start accepts. Automaton has 135481 states and 249015 transitions. Word has length 110 [2020-12-22 06:06:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:44,172 INFO L481 AbstractCegarLoop]: Abstraction has 135481 states and 249015 transitions. [2020-12-22 06:06:44,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:06:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 135481 states and 249015 transitions. [2020-12-22 06:06:44,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 06:06:44,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:44,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:44,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:06:44,195 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:44,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:44,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1087705958, now seen corresponding path program 1 times [2020-12-22 06:06:44,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:44,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109201935] [2020-12-22 06:06:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:44,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109201935] [2020-12-22 06:06:44,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:44,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:44,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463406256] [2020-12-22 06:06:44,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:44,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:44,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:44,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:44,283 INFO L87 Difference]: Start difference. First operand 135481 states and 249015 transitions. Second operand 4 states. [2020-12-22 06:06:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:55,300 INFO L93 Difference]: Finished difference Result 336915 states and 621673 transitions. [2020-12-22 06:06:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:06:55,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-22 06:06:55,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:55,755 INFO L225 Difference]: With dead ends: 336915 [2020-12-22 06:06:55,755 INFO L226 Difference]: Without dead ends: 201479 [2020-12-22 06:06:55,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201479 states. [2020-12-22 06:07:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201479 to 133825. [2020-12-22 06:07:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133825 states. [2020-12-22 06:07:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133825 states to 133825 states and 245340 transitions. [2020-12-22 06:07:02,988 INFO L78 Accepts]: Start accepts. Automaton has 133825 states and 245340 transitions. Word has length 111 [2020-12-22 06:07:02,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:02,989 INFO L481 AbstractCegarLoop]: Abstraction has 133825 states and 245340 transitions. [2020-12-22 06:07:02,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 133825 states and 245340 transitions. [2020-12-22 06:07:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 06:07:03,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:03,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:03,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:07:03,004 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:03,005 INFO L82 PathProgramCache]: Analyzing trace with hash -747977390, now seen corresponding path program 1 times [2020-12-22 06:07:03,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:03,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893816244] [2020-12-22 06:07:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:03,091 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 06:07:03,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893816244] [2020-12-22 06:07:03,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:03,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:03,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431101239] [2020-12-22 06:07:03,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:03,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:03,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:03,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:03,093 INFO L87 Difference]: Start difference. First operand 133825 states and 245340 transitions. Second operand 5 states. [2020-12-22 06:07:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:44,046 INFO L93 Difference]: Finished difference Result 1073574 states and 1967990 transitions. [2020-12-22 06:07:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:07:44,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-12-22 06:07:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:47,097 INFO L225 Difference]: With dead ends: 1073574 [2020-12-22 06:07:47,097 INFO L226 Difference]: Without dead ends: 939803 [2020-12-22 06:07:47,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:07:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939803 states. [2020-12-22 06:08:08,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939803 to 262578. [2020-12-22 06:08:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262578 states. [2020-12-22 06:08:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262578 states to 262578 states and 480755 transitions. [2020-12-22 06:08:09,790 INFO L78 Accepts]: Start accepts. Automaton has 262578 states and 480755 transitions. Word has length 113 [2020-12-22 06:08:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:09,791 INFO L481 AbstractCegarLoop]: Abstraction has 262578 states and 480755 transitions. [2020-12-22 06:08:09,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:08:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 262578 states and 480755 transitions. [2020-12-22 06:08:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 06:08:09,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:09,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:09,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:08:09,836 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:09,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1715328044, now seen corresponding path program 1 times [2020-12-22 06:08:09,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:09,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568464729] [2020-12-22 06:08:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:09,930 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 06:08:09,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568464729] [2020-12-22 06:08:09,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:09,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:09,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616405480] [2020-12-22 06:08:09,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:09,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:09,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:09,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:09,933 INFO L87 Difference]: Start difference. First operand 262578 states and 480755 transitions. Second operand 5 states.