/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:59:17,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:59:17,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:59:17,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:59:17,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:59:17,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:59:17,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:59:17,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:59:17,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:59:17,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:59:17,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:59:17,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:59:17,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:59:17,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:59:17,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:59:17,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:59:18,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:59:18,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:59:18,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:59:18,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:59:18,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:59:18,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:59:18,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:59:18,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:59:18,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:59:18,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:59:18,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:59:18,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:59:18,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:59:18,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:59:18,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:59:18,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:59:18,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:59:18,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:59:18,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:59:18,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:59:18,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:59:18,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:59:18,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:59:18,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:59:18,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:59:18,079 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:59:18,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:59:18,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:59:18,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:59:18,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:59:18,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:59:18,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:59:18,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:59:18,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:59:18,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:59:18,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:59:18,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:59:18,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:59:18,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:18,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:59:18,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:59:18,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:59:18,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:59:18,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:59:18,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:59:18,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:59:18,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:59:18,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:59:18,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:59:18,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:59:18,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:59:18,544 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:59:18,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2020-12-22 05:59:18,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e17070a/20d29895c10d483980cb757aa31f4278/FLAG4d6b8ce5b [2020-12-22 05:59:19,440 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:59:19,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2020-12-22 05:59:19,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e17070a/20d29895c10d483980cb757aa31f4278/FLAG4d6b8ce5b [2020-12-22 05:59:19,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e17070a/20d29895c10d483980cb757aa31f4278 [2020-12-22 05:59:19,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:59:19,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:59:19,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:19,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:59:19,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:59:19,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:19" (1/1) ... [2020-12-22 05:59:19,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@719a292b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:19, skipping insertion in model container [2020-12-22 05:59:19,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:19" (1/1) ... [2020-12-22 05:59:19,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:59:19,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:59:20,379 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c[61143,61156] [2020-12-22 05:59:20,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:20,511 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:59:20,685 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c[61143,61156] [2020-12-22 05:59:20,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:20,815 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:59:20,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20 WrapperNode [2020-12-22 05:59:20,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:20,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:20,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:59:20,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:59:20,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (1/1) ... [2020-12-22 05:59:20,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (1/1) ... [2020-12-22 05:59:21,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:21,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:59:21,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:59:21,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:59:21,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (1/1) ... [2020-12-22 05:59:21,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (1/1) ... [2020-12-22 05:59:21,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (1/1) ... [2020-12-22 05:59:21,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (1/1) ... [2020-12-22 05:59:21,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (1/1) ... [2020-12-22 05:59:21,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (1/1) ... [2020-12-22 05:59:21,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (1/1) ... [2020-12-22 05:59:21,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:59:21,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:59:21,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:59:21,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:59:21,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:59:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:59:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:59:21,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:59:29,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:59:29,914 INFO L299 CfgBuilder]: Removed 601 assume(true) statements. [2020-12-22 05:59:29,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:59:29 BoogieIcfgContainer [2020-12-22 05:59:29,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:59:29,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:59:29,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:59:29,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:59:29,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:59:19" (1/3) ... [2020-12-22 05:59:29,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fc131c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:59:29, skipping insertion in model container [2020-12-22 05:59:29,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:20" (2/3) ... [2020-12-22 05:59:29,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fc131c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:59:29, skipping insertion in model container [2020-12-22 05:59:29,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:59:29" (3/3) ... [2020-12-22 05:59:29,928 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product19.cil.c [2020-12-22 05:59:29,935 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:59:29,943 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:59:29,962 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:59:30,003 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:59:30,003 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:59:30,003 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:59:30,003 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:59:30,003 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:59:30,004 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:59:30,004 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:59:30,004 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:59:30,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states. [2020-12-22 05:59:30,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 05:59:30,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:30,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:30,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:30,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1084388217, now seen corresponding path program 1 times [2020-12-22 05:59:30,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:30,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863825046] [2020-12-22 05:59:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:30,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863825046] [2020-12-22 05:59:30,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:30,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:30,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702666742] [2020-12-22 05:59:30,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:30,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:30,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:30,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:30,559 INFO L87 Difference]: Start difference. First operand 2495 states. Second operand 3 states. [2020-12-22 05:59:30,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:30,872 INFO L93 Difference]: Finished difference Result 7405 states and 13937 transitions. [2020-12-22 05:59:30,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:30,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 05:59:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:30,954 INFO L225 Difference]: With dead ends: 7405 [2020-12-22 05:59:30,954 INFO L226 Difference]: Without dead ends: 4915 [2020-12-22 05:59:30,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2020-12-22 05:59:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 2491. [2020-12-22 05:59:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2491 states. [2020-12-22 05:59:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 4676 transitions. [2020-12-22 05:59:31,273 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 4676 transitions. Word has length 53 [2020-12-22 05:59:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:31,274 INFO L481 AbstractCegarLoop]: Abstraction has 2491 states and 4676 transitions. [2020-12-22 05:59:31,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 4676 transitions. [2020-12-22 05:59:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 05:59:31,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:31,279 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 05:59:31,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:59:31,279 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:31,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1476285378, now seen corresponding path program 1 times [2020-12-22 05:59:31,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:31,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33056774] [2020-12-22 05:59:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:31,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33056774] [2020-12-22 05:59:31,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:31,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:31,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163910319] [2020-12-22 05:59:31,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:31,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:31,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:31,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:31,556 INFO L87 Difference]: Start difference. First operand 2491 states and 4676 transitions. Second operand 6 states. [2020-12-22 05:59:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:32,227 INFO L93 Difference]: Finished difference Result 9739 states and 18301 transitions. [2020-12-22 05:59:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:32,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 05:59:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:32,274 INFO L225 Difference]: With dead ends: 9739 [2020-12-22 05:59:32,274 INFO L226 Difference]: Without dead ends: 7291 [2020-12-22 05:59:32,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:59:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7291 states. [2020-12-22 05:59:32,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7291 to 2487. [2020-12-22 05:59:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2487 states. [2020-12-22 05:59:32,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4665 transitions. [2020-12-22 05:59:32,443 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4665 transitions. Word has length 60 [2020-12-22 05:59:32,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:32,444 INFO L481 AbstractCegarLoop]: Abstraction has 2487 states and 4665 transitions. [2020-12-22 05:59:32,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:32,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4665 transitions. [2020-12-22 05:59:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:59:32,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:32,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:32,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:59:32,449 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:32,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:32,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1835176235, now seen corresponding path program 1 times [2020-12-22 05:59:32,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:32,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963580490] [2020-12-22 05:59:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:32,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963580490] [2020-12-22 05:59:32,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:32,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:32,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714607601] [2020-12-22 05:59:32,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:32,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:32,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:32,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:32,603 INFO L87 Difference]: Start difference. First operand 2487 states and 4665 transitions. Second operand 4 states. [2020-12-22 05:59:33,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:33,339 INFO L93 Difference]: Finished difference Result 7349 states and 13804 transitions. [2020-12-22 05:59:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:33,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:59:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:33,372 INFO L225 Difference]: With dead ends: 7349 [2020-12-22 05:59:33,372 INFO L226 Difference]: Without dead ends: 4905 [2020-12-22 05:59:33,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:33,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905 states. [2020-12-22 05:59:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4905 to 2487. [2020-12-22 05:59:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2487 states. [2020-12-22 05:59:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4656 transitions. [2020-12-22 05:59:33,552 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4656 transitions. Word has length 62 [2020-12-22 05:59:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:33,560 INFO L481 AbstractCegarLoop]: Abstraction has 2487 states and 4656 transitions. [2020-12-22 05:59:33,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:33,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4656 transitions. [2020-12-22 05:59:33,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 05:59:33,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:33,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:33,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:59:33,565 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:33,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:33,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1856631896, now seen corresponding path program 1 times [2020-12-22 05:59:33,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:33,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530817030] [2020-12-22 05:59:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:33,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530817030] [2020-12-22 05:59:33,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:33,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:33,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91769306] [2020-12-22 05:59:33,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:33,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:33,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:33,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:33,707 INFO L87 Difference]: Start difference. First operand 2487 states and 4656 transitions. Second operand 4 states. [2020-12-22 05:59:34,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:34,356 INFO L93 Difference]: Finished difference Result 7349 states and 13786 transitions. [2020-12-22 05:59:34,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:34,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 05:59:34,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:34,408 INFO L225 Difference]: With dead ends: 7349 [2020-12-22 05:59:34,408 INFO L226 Difference]: Without dead ends: 4905 [2020-12-22 05:59:34,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905 states. [2020-12-22 05:59:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4905 to 2487. [2020-12-22 05:59:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2487 states. [2020-12-22 05:59:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4647 transitions. [2020-12-22 05:59:34,556 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4647 transitions. Word has length 64 [2020-12-22 05:59:34,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:34,558 INFO L481 AbstractCegarLoop]: Abstraction has 2487 states and 4647 transitions. [2020-12-22 05:59:34,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4647 transitions. [2020-12-22 05:59:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:59:34,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:34,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:34,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:59:34,563 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:34,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1413024043, now seen corresponding path program 1 times [2020-12-22 05:59:34,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:34,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666847859] [2020-12-22 05:59:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:34,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666847859] [2020-12-22 05:59:34,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:34,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:34,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503024566] [2020-12-22 05:59:34,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:34,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:34,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:34,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:34,673 INFO L87 Difference]: Start difference. First operand 2487 states and 4647 transitions. Second operand 4 states. [2020-12-22 05:59:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:35,502 INFO L93 Difference]: Finished difference Result 12125 states and 22742 transitions. [2020-12-22 05:59:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:35,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 05:59:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:35,534 INFO L225 Difference]: With dead ends: 12125 [2020-12-22 05:59:35,534 INFO L226 Difference]: Without dead ends: 9681 [2020-12-22 05:59:35,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:35,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9681 states. [2020-12-22 05:59:35,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9681 to 2487. [2020-12-22 05:59:35,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2487 states. [2020-12-22 05:59:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4643 transitions. [2020-12-22 05:59:35,727 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4643 transitions. Word has length 66 [2020-12-22 05:59:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:35,727 INFO L481 AbstractCegarLoop]: Abstraction has 2487 states and 4643 transitions. [2020-12-22 05:59:35,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:35,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4643 transitions. [2020-12-22 05:59:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:59:35,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:35,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:35,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:59:35,731 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:35,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:35,732 INFO L82 PathProgramCache]: Analyzing trace with hash -2071958955, now seen corresponding path program 1 times [2020-12-22 05:59:35,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:35,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403883685] [2020-12-22 05:59:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:35,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403883685] [2020-12-22 05:59:35,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:35,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:35,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407948906] [2020-12-22 05:59:35,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:35,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:35,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:35,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:35,850 INFO L87 Difference]: Start difference. First operand 2487 states and 4643 transitions. Second operand 4 states. [2020-12-22 05:59:36,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:36,284 INFO L93 Difference]: Finished difference Result 9716 states and 18215 transitions. [2020-12-22 05:59:36,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:36,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 05:59:36,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:36,308 INFO L225 Difference]: With dead ends: 9716 [2020-12-22 05:59:36,308 INFO L226 Difference]: Without dead ends: 7251 [2020-12-22 05:59:36,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2020-12-22 05:59:36,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 2469. [2020-12-22 05:59:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2020-12-22 05:59:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 4612 transitions. [2020-12-22 05:59:36,591 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 4612 transitions. Word has length 66 [2020-12-22 05:59:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:36,592 INFO L481 AbstractCegarLoop]: Abstraction has 2469 states and 4612 transitions. [2020-12-22 05:59:36,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:36,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 4612 transitions. [2020-12-22 05:59:36,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 05:59:36,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:36,595 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 05:59:36,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:59:36,595 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:36,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:36,601 INFO L82 PathProgramCache]: Analyzing trace with hash 100768336, now seen corresponding path program 1 times [2020-12-22 05:59:36,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:36,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6467466] [2020-12-22 05:59:36,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:36,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6467466] [2020-12-22 05:59:36,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:36,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:36,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751981544] [2020-12-22 05:59:36,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:36,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:36,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:36,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:36,704 INFO L87 Difference]: Start difference. First operand 2469 states and 4612 transitions. Second operand 4 states. [2020-12-22 05:59:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:37,214 INFO L93 Difference]: Finished difference Result 7313 states and 13699 transitions. [2020-12-22 05:59:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:37,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 05:59:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:37,230 INFO L225 Difference]: With dead ends: 7313 [2020-12-22 05:59:37,231 INFO L226 Difference]: Without dead ends: 4866 [2020-12-22 05:59:37,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2020-12-22 05:59:37,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 2469. [2020-12-22 05:59:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2020-12-22 05:59:37,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 4606 transitions. [2020-12-22 05:59:37,406 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 4606 transitions. Word has length 67 [2020-12-22 05:59:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:37,406 INFO L481 AbstractCegarLoop]: Abstraction has 2469 states and 4606 transitions. [2020-12-22 05:59:37,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 4606 transitions. [2020-12-22 05:59:37,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:59:37,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:37,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:37,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:59:37,410 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:37,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:37,410 INFO L82 PathProgramCache]: Analyzing trace with hash 336629648, now seen corresponding path program 1 times [2020-12-22 05:59:37,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:37,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837981856] [2020-12-22 05:59:37,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:37,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837981856] [2020-12-22 05:59:37,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:37,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:37,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130030601] [2020-12-22 05:59:37,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:37,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:37,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:37,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:37,490 INFO L87 Difference]: Start difference. First operand 2469 states and 4606 transitions. Second operand 4 states. [2020-12-22 05:59:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:37,939 INFO L93 Difference]: Finished difference Result 7313 states and 13687 transitions. [2020-12-22 05:59:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:37,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 05:59:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:37,953 INFO L225 Difference]: With dead ends: 7313 [2020-12-22 05:59:37,954 INFO L226 Difference]: Without dead ends: 4866 [2020-12-22 05:59:37,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2020-12-22 05:59:38,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 2469. [2020-12-22 05:59:38,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2020-12-22 05:59:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 4600 transitions. [2020-12-22 05:59:38,078 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 4600 transitions. Word has length 68 [2020-12-22 05:59:38,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:38,080 INFO L481 AbstractCegarLoop]: Abstraction has 2469 states and 4600 transitions. [2020-12-22 05:59:38,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 4600 transitions. [2020-12-22 05:59:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:59:38,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:38,083 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 05:59:38,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:59:38,083 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:38,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:38,084 INFO L82 PathProgramCache]: Analyzing trace with hash -388666453, now seen corresponding path program 1 times [2020-12-22 05:59:38,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:38,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692479596] [2020-12-22 05:59:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:38,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692479596] [2020-12-22 05:59:38,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:38,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:59:38,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795209859] [2020-12-22 05:59:38,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:59:38,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:38,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:59:38,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:38,202 INFO L87 Difference]: Start difference. First operand 2469 states and 4600 transitions. Second operand 7 states. [2020-12-22 05:59:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:39,077 INFO L93 Difference]: Finished difference Result 12096 states and 22656 transitions. [2020-12-22 05:59:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:39,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-22 05:59:39,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:39,106 INFO L225 Difference]: With dead ends: 12096 [2020-12-22 05:59:39,106 INFO L226 Difference]: Without dead ends: 9655 [2020-12-22 05:59:39,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9655 states. [2020-12-22 05:59:39,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9655 to 2471. [2020-12-22 05:59:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2471 states. [2020-12-22 05:59:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 4601 transitions. [2020-12-22 05:59:39,333 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 4601 transitions. Word has length 69 [2020-12-22 05:59:39,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:39,333 INFO L481 AbstractCegarLoop]: Abstraction has 2471 states and 4601 transitions. [2020-12-22 05:59:39,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:59:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 4601 transitions. [2020-12-22 05:59:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:59:39,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:39,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:39,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:59:39,336 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:39,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:39,337 INFO L82 PathProgramCache]: Analyzing trace with hash -436213658, now seen corresponding path program 1 times [2020-12-22 05:59:39,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:39,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241259835] [2020-12-22 05:59:39,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:39,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241259835] [2020-12-22 05:59:39,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:39,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:59:39,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377143302] [2020-12-22 05:59:39,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:59:39,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:39,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:59:39,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:39,444 INFO L87 Difference]: Start difference. First operand 2471 states and 4601 transitions. Second operand 7 states. [2020-12-22 05:59:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:40,323 INFO L93 Difference]: Finished difference Result 12088 states and 22635 transitions. [2020-12-22 05:59:40,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:40,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-12-22 05:59:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:40,349 INFO L225 Difference]: With dead ends: 12088 [2020-12-22 05:59:40,349 INFO L226 Difference]: Without dead ends: 9650 [2020-12-22 05:59:40,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9650 states. [2020-12-22 05:59:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9650 to 2476. [2020-12-22 05:59:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2020-12-22 05:59:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4609 transitions. [2020-12-22 05:59:40,527 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4609 transitions. Word has length 71 [2020-12-22 05:59:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:40,527 INFO L481 AbstractCegarLoop]: Abstraction has 2476 states and 4609 transitions. [2020-12-22 05:59:40,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:59:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4609 transitions. [2020-12-22 05:59:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:59:40,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:40,530 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 05:59:40,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:59:40,530 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash -900477653, now seen corresponding path program 1 times [2020-12-22 05:59:40,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:40,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655892597] [2020-12-22 05:59:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:40,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655892597] [2020-12-22 05:59:40,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:40,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:40,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883931716] [2020-12-22 05:59:40,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:40,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:40,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:40,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:40,610 INFO L87 Difference]: Start difference. First operand 2476 states and 4609 transitions. Second operand 3 states. [2020-12-22 05:59:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:40,742 INFO L93 Difference]: Finished difference Result 4894 states and 9136 transitions. [2020-12-22 05:59:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:40,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 05:59:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:40,753 INFO L225 Difference]: With dead ends: 4894 [2020-12-22 05:59:40,754 INFO L226 Difference]: Without dead ends: 2455 [2020-12-22 05:59:40,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2020-12-22 05:59:40,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2020-12-22 05:59:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2455 states. [2020-12-22 05:59:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4573 transitions. [2020-12-22 05:59:40,876 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4573 transitions. Word has length 73 [2020-12-22 05:59:40,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:40,876 INFO L481 AbstractCegarLoop]: Abstraction has 2455 states and 4573 transitions. [2020-12-22 05:59:40,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:40,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4573 transitions. [2020-12-22 05:59:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:59:40,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:40,882 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] [2020-12-22 05:59:40,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:59:40,883 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:40,883 INFO L82 PathProgramCache]: Analyzing trace with hash 131909968, now seen corresponding path program 1 times [2020-12-22 05:59:40,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:40,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076994509] [2020-12-22 05:59:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:40,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076994509] [2020-12-22 05:59:40,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:40,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:40,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827395327] [2020-12-22 05:59:40,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:40,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:40,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:40,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:40,988 INFO L87 Difference]: Start difference. First operand 2455 states and 4573 transitions. Second operand 5 states. [2020-12-22 05:59:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:41,268 INFO L93 Difference]: Finished difference Result 4843 states and 9058 transitions. [2020-12-22 05:59:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:41,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 05:59:41,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:41,280 INFO L225 Difference]: With dead ends: 4843 [2020-12-22 05:59:41,280 INFO L226 Difference]: Without dead ends: 2449 [2020-12-22 05:59:41,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2020-12-22 05:59:41,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 2449. [2020-12-22 05:59:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2449 states. [2020-12-22 05:59:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 4564 transitions. [2020-12-22 05:59:41,498 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 4564 transitions. Word has length 75 [2020-12-22 05:59:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:41,498 INFO L481 AbstractCegarLoop]: Abstraction has 2449 states and 4564 transitions. [2020-12-22 05:59:41,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 4564 transitions. [2020-12-22 05:59:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:59:41,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:41,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:41,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:59:41,502 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:41,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:41,503 INFO L82 PathProgramCache]: Analyzing trace with hash -125082160, now seen corresponding path program 1 times [2020-12-22 05:59:41,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:41,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994451860] [2020-12-22 05:59:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:41,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994451860] [2020-12-22 05:59:41,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:41,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:41,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916831917] [2020-12-22 05:59:41,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:41,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:41,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:41,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:41,596 INFO L87 Difference]: Start difference. First operand 2449 states and 4564 transitions. Second operand 4 states. [2020-12-22 05:59:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:41,813 INFO L93 Difference]: Finished difference Result 4837 states and 9049 transitions. [2020-12-22 05:59:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:41,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 05:59:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:41,821 INFO L225 Difference]: With dead ends: 4837 [2020-12-22 05:59:41,821 INFO L226 Difference]: Without dead ends: 2435 [2020-12-22 05:59:41,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2020-12-22 05:59:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2435. [2020-12-22 05:59:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2435 states. [2020-12-22 05:59:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4543 transitions. [2020-12-22 05:59:41,990 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4543 transitions. Word has length 75 [2020-12-22 05:59:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:41,992 INFO L481 AbstractCegarLoop]: Abstraction has 2435 states and 4543 transitions. [2020-12-22 05:59:41,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4543 transitions. [2020-12-22 05:59:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 05:59:41,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:41,996 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] [2020-12-22 05:59:41,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:59:41,996 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:41,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:41,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1734159741, now seen corresponding path program 1 times [2020-12-22 05:59:41,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:41,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015036261] [2020-12-22 05:59:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:42,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015036261] [2020-12-22 05:59:42,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:42,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:42,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933594020] [2020-12-22 05:59:42,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:42,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:42,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:42,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:42,139 INFO L87 Difference]: Start difference. First operand 2435 states and 4543 transitions. Second operand 6 states. [2020-12-22 05:59:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:42,511 INFO L93 Difference]: Finished difference Result 4837 states and 9044 transitions. [2020-12-22 05:59:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:42,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 05:59:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:42,518 INFO L225 Difference]: With dead ends: 4837 [2020-12-22 05:59:42,518 INFO L226 Difference]: Without dead ends: 2455 [2020-12-22 05:59:42,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:59:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2020-12-22 05:59:42,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2435. [2020-12-22 05:59:42,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2435 states. [2020-12-22 05:59:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4542 transitions. [2020-12-22 05:59:42,654 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4542 transitions. Word has length 76 [2020-12-22 05:59:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:42,655 INFO L481 AbstractCegarLoop]: Abstraction has 2435 states and 4542 transitions. [2020-12-22 05:59:42,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4542 transitions. [2020-12-22 05:59:42,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 05:59:42,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:42,657 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] [2020-12-22 05:59:42,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:59:42,658 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:42,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:42,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1619891255, now seen corresponding path program 1 times [2020-12-22 05:59:42,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:42,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088418096] [2020-12-22 05:59:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:42,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088418096] [2020-12-22 05:59:42,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:42,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:42,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154224568] [2020-12-22 05:59:42,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:42,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:42,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:42,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:42,750 INFO L87 Difference]: Start difference. First operand 2435 states and 4542 transitions. Second operand 6 states. [2020-12-22 05:59:43,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:43,087 INFO L93 Difference]: Finished difference Result 4827 states and 9025 transitions. [2020-12-22 05:59:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:43,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 05:59:43,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:43,096 INFO L225 Difference]: With dead ends: 4827 [2020-12-22 05:59:43,097 INFO L226 Difference]: Without dead ends: 2450 [2020-12-22 05:59:43,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:59:43,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2020-12-22 05:59:43,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2435. [2020-12-22 05:59:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2435 states. [2020-12-22 05:59:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4541 transitions. [2020-12-22 05:59:43,256 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4541 transitions. Word has length 77 [2020-12-22 05:59:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:43,257 INFO L481 AbstractCegarLoop]: Abstraction has 2435 states and 4541 transitions. [2020-12-22 05:59:43,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4541 transitions. [2020-12-22 05:59:43,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 05:59:43,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:43,260 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] [2020-12-22 05:59:43,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:59:43,260 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:43,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:43,260 INFO L82 PathProgramCache]: Analyzing trace with hash 390140520, now seen corresponding path program 1 times [2020-12-22 05:59:43,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:43,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343961959] [2020-12-22 05:59:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:43,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343961959] [2020-12-22 05:59:43,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:43,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:43,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014326811] [2020-12-22 05:59:43,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:43,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:43,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:43,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:43,402 INFO L87 Difference]: Start difference. First operand 2435 states and 4541 transitions. Second operand 4 states. [2020-12-22 05:59:45,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:45,312 INFO L93 Difference]: Finished difference Result 6711 states and 12600 transitions. [2020-12-22 05:59:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:45,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 05:59:45,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:45,324 INFO L225 Difference]: With dead ends: 6711 [2020-12-22 05:59:45,324 INFO L226 Difference]: Without dead ends: 4340 [2020-12-22 05:59:45,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:45,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2020-12-22 05:59:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 2435. [2020-12-22 05:59:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2435 states. [2020-12-22 05:59:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4535 transitions. [2020-12-22 05:59:45,480 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4535 transitions. Word has length 78 [2020-12-22 05:59:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:45,481 INFO L481 AbstractCegarLoop]: Abstraction has 2435 states and 4535 transitions. [2020-12-22 05:59:45,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4535 transitions. [2020-12-22 05:59:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 05:59:45,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:45,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:45,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:59:45,484 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:45,485 INFO L82 PathProgramCache]: Analyzing trace with hash -807776386, now seen corresponding path program 1 times [2020-12-22 05:59:45,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:45,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885693261] [2020-12-22 05:59:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:45,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885693261] [2020-12-22 05:59:45,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:45,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:45,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949022554] [2020-12-22 05:59:45,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:45,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:45,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:45,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:45,601 INFO L87 Difference]: Start difference. First operand 2435 states and 4535 transitions. Second operand 4 states. [2020-12-22 05:59:47,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:47,347 INFO L93 Difference]: Finished difference Result 6711 states and 12589 transitions. [2020-12-22 05:59:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:47,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 05:59:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:47,358 INFO L225 Difference]: With dead ends: 6711 [2020-12-22 05:59:47,358 INFO L226 Difference]: Without dead ends: 4340 [2020-12-22 05:59:47,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2020-12-22 05:59:47,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 2435. [2020-12-22 05:59:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2435 states. [2020-12-22 05:59:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4529 transitions. [2020-12-22 05:59:47,525 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4529 transitions. Word has length 80 [2020-12-22 05:59:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:47,526 INFO L481 AbstractCegarLoop]: Abstraction has 2435 states and 4529 transitions. [2020-12-22 05:59:47,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4529 transitions. [2020-12-22 05:59:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 05:59:47,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:47,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:47,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:59:47,529 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:47,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1964191138, now seen corresponding path program 1 times [2020-12-22 05:59:47,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:47,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236813715] [2020-12-22 05:59:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:47,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236813715] [2020-12-22 05:59:47,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:47,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:47,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879610446] [2020-12-22 05:59:47,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:47,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:47,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:47,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:47,644 INFO L87 Difference]: Start difference. First operand 2435 states and 4529 transitions. Second operand 4 states. [2020-12-22 05:59:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:49,427 INFO L93 Difference]: Finished difference Result 6711 states and 12578 transitions. [2020-12-22 05:59:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:49,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 05:59:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:49,439 INFO L225 Difference]: With dead ends: 6711 [2020-12-22 05:59:49,440 INFO L226 Difference]: Without dead ends: 4340 [2020-12-22 05:59:49,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2020-12-22 05:59:49,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 2435. [2020-12-22 05:59:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2435 states. [2020-12-22 05:59:49,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4523 transitions. [2020-12-22 05:59:49,610 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4523 transitions. Word has length 82 [2020-12-22 05:59:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:49,611 INFO L481 AbstractCegarLoop]: Abstraction has 2435 states and 4523 transitions. [2020-12-22 05:59:49,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4523 transitions. [2020-12-22 05:59:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 05:59:49,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:49,614 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] [2020-12-22 05:59:49,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:59:49,615 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:49,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:49,615 INFO L82 PathProgramCache]: Analyzing trace with hash 122558494, now seen corresponding path program 1 times [2020-12-22 05:59:49,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:49,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481840841] [2020-12-22 05:59:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:49,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481840841] [2020-12-22 05:59:49,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:49,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:49,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386778171] [2020-12-22 05:59:49,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:49,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:49,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:49,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:49,728 INFO L87 Difference]: Start difference. First operand 2435 states and 4523 transitions. Second operand 4 states. [2020-12-22 05:59:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:51,540 INFO L93 Difference]: Finished difference Result 6711 states and 12567 transitions. [2020-12-22 05:59:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:51,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-12-22 05:59:51,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:51,551 INFO L225 Difference]: With dead ends: 6711 [2020-12-22 05:59:51,551 INFO L226 Difference]: Without dead ends: 4340 [2020-12-22 05:59:51,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2020-12-22 05:59:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 2435. [2020-12-22 05:59:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2435 states. [2020-12-22 05:59:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4517 transitions. [2020-12-22 05:59:51,715 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4517 transitions. Word has length 84 [2020-12-22 05:59:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:51,715 INFO L481 AbstractCegarLoop]: Abstraction has 2435 states and 4517 transitions. [2020-12-22 05:59:51,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4517 transitions. [2020-12-22 05:59:51,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 05:59:51,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:51,718 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] [2020-12-22 05:59:51,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:59:51,719 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:51,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:51,719 INFO L82 PathProgramCache]: Analyzing trace with hash 681936084, now seen corresponding path program 1 times [2020-12-22 05:59:51,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:51,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391034173] [2020-12-22 05:59:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:51,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391034173] [2020-12-22 05:59:51,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:51,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:51,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926713142] [2020-12-22 05:59:51,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:51,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:51,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:51,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:51,813 INFO L87 Difference]: Start difference. First operand 2435 states and 4517 transitions. Second operand 6 states. [2020-12-22 05:59:56,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:56,904 INFO L93 Difference]: Finished difference Result 25957 states and 48532 transitions. [2020-12-22 05:59:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:59:56,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-12-22 05:59:56,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:56,939 INFO L225 Difference]: With dead ends: 25957 [2020-12-22 05:59:56,939 INFO L226 Difference]: Without dead ends: 23604 [2020-12-22 05:59:56,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:59:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23604 states. [2020-12-22 05:59:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23604 to 4794. [2020-12-22 05:59:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4794 states. [2020-12-22 05:59:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 8922 transitions. [2020-12-22 05:59:57,426 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 8922 transitions. Word has length 86 [2020-12-22 05:59:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:57,426 INFO L481 AbstractCegarLoop]: Abstraction has 4794 states and 8922 transitions. [2020-12-22 05:59:57,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 8922 transitions. [2020-12-22 05:59:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 05:59:57,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:57,431 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] [2020-12-22 05:59:57,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:59:57,432 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:57,432 INFO L82 PathProgramCache]: Analyzing trace with hash -694497868, now seen corresponding path program 1 times [2020-12-22 05:59:57,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:57,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132335143] [2020-12-22 05:59:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:57,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132335143] [2020-12-22 05:59:57,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:57,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:57,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433502452] [2020-12-22 05:59:57,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:57,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:57,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:57,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:57,518 INFO L87 Difference]: Start difference. First operand 4794 states and 8922 transitions. Second operand 5 states. [2020-12-22 06:00:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:00,960 INFO L93 Difference]: Finished difference Result 19079 states and 35565 transitions. [2020-12-22 06:00:00,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:00,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 06:00:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:00,982 INFO L225 Difference]: With dead ends: 19079 [2020-12-22 06:00:00,982 INFO L226 Difference]: Without dead ends: 14433 [2020-12-22 06:00:00,991 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 06:00:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14433 states. [2020-12-22 06:00:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14433 to 4806. [2020-12-22 06:00:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4806 states. [2020-12-22 06:00:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 8934 transitions. [2020-12-22 06:00:01,530 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 8934 transitions. Word has length 88 [2020-12-22 06:00:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:01,531 INFO L481 AbstractCegarLoop]: Abstraction has 4806 states and 8934 transitions. [2020-12-22 06:00:01,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:01,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 8934 transitions. [2020-12-22 06:00:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:00:01,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:01,536 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] [2020-12-22 06:00:01,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:00:01,537 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 06:00:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:01,537 INFO L82 PathProgramCache]: Analyzing trace with hash 168577519, now seen corresponding path program 1 times [2020-12-22 06:00:01,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:01,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080335271] [2020-12-22 06:00:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:01,623 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 06:00:01,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080335271] [2020-12-22 06:00:01,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:01,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:01,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689052857] [2020-12-22 06:00:01,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:01,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:01,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:01,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:01,626 INFO L87 Difference]: Start difference. First operand 4806 states and 8934 transitions. Second operand 5 states. [2020-12-22 06:00:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:01,966 INFO L93 Difference]: Finished difference Result 9544 states and 17777 transitions. [2020-12-22 06:00:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:01,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 06:00:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:01,978 INFO L225 Difference]: With dead ends: 9544 [2020-12-22 06:00:01,978 INFO L226 Difference]: Without dead ends: 4817 [2020-12-22 06:00:01,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:00:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2020-12-22 06:00:02,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 4802. [2020-12-22 06:00:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4802 states. [2020-12-22 06:00:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 8924 transitions. [2020-12-22 06:00:02,473 INFO L78 Accepts]: Start accepts. Automaton has 4802 states and 8924 transitions. Word has length 88 [2020-12-22 06:00:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:02,473 INFO L481 AbstractCegarLoop]: Abstraction has 4802 states and 8924 transitions. [2020-12-22 06:00:02,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4802 states and 8924 transitions. [2020-12-22 06:00:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:00:02,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:02,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:02,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:00:02,478 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 06:00:02,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:02,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2143426133, now seen corresponding path program 1 times [2020-12-22 06:00:02,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:02,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038610021] [2020-12-22 06:00:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:02,544 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 06:00:02,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038610021] [2020-12-22 06:00:02,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:02,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:02,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898035362] [2020-12-22 06:00:02,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:02,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:02,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:02,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:02,546 INFO L87 Difference]: Start difference. First operand 4802 states and 8924 transitions. Second operand 4 states. [2020-12-22 06:00:05,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:05,977 INFO L93 Difference]: Finished difference Result 16620 states and 30995 transitions. [2020-12-22 06:00:05,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:05,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-22 06:00:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:05,994 INFO L225 Difference]: With dead ends: 16620 [2020-12-22 06:00:05,994 INFO L226 Difference]: Without dead ends: 11923 [2020-12-22 06:00:06,003 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 06:00:06,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11923 states. [2020-12-22 06:00:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11923 to 6588. [2020-12-22 06:00:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6588 states. [2020-12-22 06:00:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6588 states to 6588 states and 12110 transitions. [2020-12-22 06:00:06,517 INFO L78 Accepts]: Start accepts. Automaton has 6588 states and 12110 transitions. Word has length 89 [2020-12-22 06:00:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:06,517 INFO L481 AbstractCegarLoop]: Abstraction has 6588 states and 12110 transitions. [2020-12-22 06:00:06,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6588 states and 12110 transitions. [2020-12-22 06:00:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:00:06,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:06,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:06,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:00:06,522 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 06:00:06,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:06,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1484543239, now seen corresponding path program 1 times [2020-12-22 06:00:06,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:06,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500412675] [2020-12-22 06:00:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:06,600 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 06:00:06,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500412675] [2020-12-22 06:00:06,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:06,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:06,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492346643] [2020-12-22 06:00:06,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:06,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:06,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:06,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:06,606 INFO L87 Difference]: Start difference. First operand 6588 states and 12110 transitions. Second operand 5 states. [2020-12-22 06:00:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:06,907 INFO L93 Difference]: Finished difference Result 9846 states and 18109 transitions. [2020-12-22 06:00:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:06,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-12-22 06:00:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:06,912 INFO L225 Difference]: With dead ends: 9846 [2020-12-22 06:00:06,912 INFO L226 Difference]: Without dead ends: 3288 [2020-12-22 06:00:06,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:00:06,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2020-12-22 06:00:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 3288. [2020-12-22 06:00:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3288 states. [2020-12-22 06:00:07,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 6034 transitions. [2020-12-22 06:00:07,070 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 6034 transitions. Word has length 89 [2020-12-22 06:00:07,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:07,070 INFO L481 AbstractCegarLoop]: Abstraction has 3288 states and 6034 transitions. [2020-12-22 06:00:07,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 6034 transitions. [2020-12-22 06:00:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:00:07,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:07,073 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] [2020-12-22 06:00:07,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:00:07,073 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 06:00:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:07,073 INFO L82 PathProgramCache]: Analyzing trace with hash -820203489, now seen corresponding path program 1 times [2020-12-22 06:00:07,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:07,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664018062] [2020-12-22 06:00:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:07,157 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 06:00:07,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664018062] [2020-12-22 06:00:07,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:07,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:07,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667826271] [2020-12-22 06:00:07,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:07,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:07,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:07,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:07,159 INFO L87 Difference]: Start difference. First operand 3288 states and 6034 transitions. Second operand 5 states. [2020-12-22 06:00:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:08,594 INFO L93 Difference]: Finished difference Result 23556 states and 43568 transitions. [2020-12-22 06:00:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:08,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-12-22 06:00:08,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:08,625 INFO L225 Difference]: With dead ends: 23556 [2020-12-22 06:00:08,625 INFO L226 Difference]: Without dead ends: 20340 [2020-12-22 06:00:08,632 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 06:00:08,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20340 states. [2020-12-22 06:00:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20340 to 6025. [2020-12-22 06:00:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6025 states. [2020-12-22 06:00:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6025 states to 6025 states and 11122 transitions. [2020-12-22 06:00:09,071 INFO L78 Accepts]: Start accepts. Automaton has 6025 states and 11122 transitions. Word has length 91 [2020-12-22 06:00:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:09,071 INFO L481 AbstractCegarLoop]: Abstraction has 6025 states and 11122 transitions. [2020-12-22 06:00:09,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 6025 states and 11122 transitions. [2020-12-22 06:00:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:00:09,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:09,073 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] [2020-12-22 06:00:09,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:00:09,074 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 06:00:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash -545443875, now seen corresponding path program 1 times [2020-12-22 06:00:09,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:09,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338130713] [2020-12-22 06:00:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:09,141 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 06:00:09,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338130713] [2020-12-22 06:00:09,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:09,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:09,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232559073] [2020-12-22 06:00:09,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:09,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:09,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:09,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:09,143 INFO L87 Difference]: Start difference. First operand 6025 states and 11122 transitions. Second operand 3 states. [2020-12-22 06:00:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:09,851 INFO L93 Difference]: Finished difference Result 11018 states and 20306 transitions. [2020-12-22 06:00:09,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:09,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 06:00:09,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:09,863 INFO L225 Difference]: With dead ends: 11018 [2020-12-22 06:00:09,863 INFO L226 Difference]: Without dead ends: 8506 [2020-12-22 06:00:09,869 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 06:00:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8506 states. [2020-12-22 06:00:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8506 to 8479. [2020-12-22 06:00:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8479 states. [2020-12-22 06:00:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 15642 transitions. [2020-12-22 06:00:10,316 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 15642 transitions. Word has length 91 [2020-12-22 06:00:10,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:10,317 INFO L481 AbstractCegarLoop]: Abstraction has 8479 states and 15642 transitions. [2020-12-22 06:00:10,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:10,317 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 15642 transitions. [2020-12-22 06:00:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:00:10,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:10,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:10,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:00:10,320 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:10,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1638922468, now seen corresponding path program 1 times [2020-12-22 06:00:10,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:10,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592784813] [2020-12-22 06:00:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:10,473 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 06:00:10,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592784813] [2020-12-22 06:00:10,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:10,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:10,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151732312] [2020-12-22 06:00:10,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:10,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:10,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:10,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:10,475 INFO L87 Difference]: Start difference. First operand 8479 states and 15642 transitions. Second operand 5 states. [2020-12-22 06:00:11,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:11,185 INFO L93 Difference]: Finished difference Result 13440 states and 24760 transitions. [2020-12-22 06:00:11,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:11,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:00:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:11,197 INFO L225 Difference]: With dead ends: 13440 [2020-12-22 06:00:11,197 INFO L226 Difference]: Without dead ends: 8502 [2020-12-22 06:00:11,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8502 states. [2020-12-22 06:00:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8502 to 8479. [2020-12-22 06:00:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8479 states. [2020-12-22 06:00:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 15625 transitions. [2020-12-22 06:00:11,622 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 15625 transitions. Word has length 92 [2020-12-22 06:00:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:11,622 INFO L481 AbstractCegarLoop]: Abstraction has 8479 states and 15625 transitions. [2020-12-22 06:00:11,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 15625 transitions. [2020-12-22 06:00:11,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:00:11,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:11,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:11,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:00:11,624 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:11,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1052116454, now seen corresponding path program 1 times [2020-12-22 06:00:11,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:11,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142145510] [2020-12-22 06:00:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:11,737 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 06:00:11,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142145510] [2020-12-22 06:00:11,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:11,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:11,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302389843] [2020-12-22 06:00:11,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:11,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:11,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:11,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:11,739 INFO L87 Difference]: Start difference. First operand 8479 states and 15625 transitions. Second operand 3 states. [2020-12-22 06:00:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:12,503 INFO L93 Difference]: Finished difference Result 15324 states and 28251 transitions. [2020-12-22 06:00:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:12,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 06:00:12,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:12,518 INFO L225 Difference]: With dead ends: 15324 [2020-12-22 06:00:12,518 INFO L226 Difference]: Without dead ends: 8457 [2020-12-22 06:00:12,526 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 06:00:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8457 states. [2020-12-22 06:00:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8457 to 8457. [2020-12-22 06:00:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8457 states. [2020-12-22 06:00:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8457 states to 8457 states and 15583 transitions. [2020-12-22 06:00:13,074 INFO L78 Accepts]: Start accepts. Automaton has 8457 states and 15583 transitions. Word has length 92 [2020-12-22 06:00:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:13,075 INFO L481 AbstractCegarLoop]: Abstraction has 8457 states and 15583 transitions. [2020-12-22 06:00:13,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 8457 states and 15583 transitions. [2020-12-22 06:00:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:00:13,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:13,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:13,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:00:13,078 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:13,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1416599279, now seen corresponding path program 1 times [2020-12-22 06:00:13,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:13,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514047109] [2020-12-22 06:00:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:13,185 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 06:00:13,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514047109] [2020-12-22 06:00:13,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:13,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:13,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309559738] [2020-12-22 06:00:13,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:13,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:13,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:13,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:13,187 INFO L87 Difference]: Start difference. First operand 8457 states and 15583 transitions. Second operand 6 states. [2020-12-22 06:00:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:17,104 INFO L93 Difference]: Finished difference Result 24128 states and 44214 transitions. [2020-12-22 06:00:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:00:17,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-12-22 06:00:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:17,125 INFO L225 Difference]: With dead ends: 24128 [2020-12-22 06:00:17,125 INFO L226 Difference]: Without dead ends: 17287 [2020-12-22 06:00:17,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17287 states. [2020-12-22 06:00:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17287 to 10217. [2020-12-22 06:00:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10217 states. [2020-12-22 06:00:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10217 states to 10217 states and 18867 transitions. [2020-12-22 06:00:17,680 INFO L78 Accepts]: Start accepts. Automaton has 10217 states and 18867 transitions. Word has length 94 [2020-12-22 06:00:17,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:17,681 INFO L481 AbstractCegarLoop]: Abstraction has 10217 states and 18867 transitions. [2020-12-22 06:00:17,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:17,681 INFO L276 IsEmpty]: Start isEmpty. Operand 10217 states and 18867 transitions. [2020-12-22 06:00:17,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:00:17,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:17,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:17,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:00:17,683 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:17,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:17,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1731906929, now seen corresponding path program 1 times [2020-12-22 06:00:17,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:17,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752871885] [2020-12-22 06:00:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:17,794 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 06:00:17,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752871885] [2020-12-22 06:00:17,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:17,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:17,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218404774] [2020-12-22 06:00:17,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:17,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:17,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:17,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:17,797 INFO L87 Difference]: Start difference. First operand 10217 states and 18867 transitions. Second operand 5 states. [2020-12-22 06:00:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:18,785 INFO L93 Difference]: Finished difference Result 15881 states and 29332 transitions. [2020-12-22 06:00:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:18,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-22 06:00:18,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:18,812 INFO L225 Difference]: With dead ends: 15881 [2020-12-22 06:00:18,812 INFO L226 Difference]: Without dead ends: 15868 [2020-12-22 06:00:18,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:18,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15868 states. [2020-12-22 06:00:19,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15868 to 10229. [2020-12-22 06:00:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10229 states. [2020-12-22 06:00:19,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10229 states to 10229 states and 18879 transitions. [2020-12-22 06:00:19,475 INFO L78 Accepts]: Start accepts. Automaton has 10229 states and 18879 transitions. Word has length 94 [2020-12-22 06:00:19,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:19,475 INFO L481 AbstractCegarLoop]: Abstraction has 10229 states and 18879 transitions. [2020-12-22 06:00:19,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 10229 states and 18879 transitions. [2020-12-22 06:00:19,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 06:00:19,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:19,477 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] [2020-12-22 06:00:19,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:00:19,477 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:19,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:19,478 INFO L82 PathProgramCache]: Analyzing trace with hash 603738836, now seen corresponding path program 1 times [2020-12-22 06:00:19,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:19,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881042833] [2020-12-22 06:00:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:19,578 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 06:00:19,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881042833] [2020-12-22 06:00:19,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:19,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:19,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706177307] [2020-12-22 06:00:19,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:19,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:19,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:19,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:19,581 INFO L87 Difference]: Start difference. First operand 10229 states and 18879 transitions. Second operand 6 states. [2020-12-22 06:00:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:20,168 INFO L93 Difference]: Finished difference Result 10246 states and 18895 transitions. [2020-12-22 06:00:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:20,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-12-22 06:00:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:20,181 INFO L225 Difference]: With dead ends: 10246 [2020-12-22 06:00:20,182 INFO L226 Difference]: Without dead ends: 10233 [2020-12-22 06:00:20,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 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 06:00:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10233 states. [2020-12-22 06:00:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10233 to 10229. [2020-12-22 06:00:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10229 states. [2020-12-22 06:00:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10229 states to 10229 states and 18871 transitions. [2020-12-22 06:00:20,821 INFO L78 Accepts]: Start accepts. Automaton has 10229 states and 18871 transitions. Word has length 96 [2020-12-22 06:00:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:20,821 INFO L481 AbstractCegarLoop]: Abstraction has 10229 states and 18871 transitions. [2020-12-22 06:00:20,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 10229 states and 18871 transitions. [2020-12-22 06:00:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 06:00:20,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:20,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:20,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:00:20,825 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:20,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:20,825 INFO L82 PathProgramCache]: Analyzing trace with hash 228968715, now seen corresponding path program 1 times [2020-12-22 06:00:20,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:20,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017298536] [2020-12-22 06:00:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:20,922 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 06:00:20,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017298536] [2020-12-22 06:00:20,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:20,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:20,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333735840] [2020-12-22 06:00:20,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:20,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:20,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:20,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:20,925 INFO L87 Difference]: Start difference. First operand 10229 states and 18871 transitions. Second operand 5 states. [2020-12-22 06:00:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:22,906 INFO L93 Difference]: Finished difference Result 25034 states and 46151 transitions. [2020-12-22 06:00:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:22,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-12-22 06:00:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:22,924 INFO L225 Difference]: With dead ends: 25034 [2020-12-22 06:00:22,924 INFO L226 Difference]: Without dead ends: 16489 [2020-12-22 06:00:22,931 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 06:00:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16489 states. [2020-12-22 06:00:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16489 to 10229. [2020-12-22 06:00:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10229 states. [2020-12-22 06:00:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10229 states to 10229 states and 18863 transitions. [2020-12-22 06:00:23,516 INFO L78 Accepts]: Start accepts. Automaton has 10229 states and 18863 transitions. Word has length 103 [2020-12-22 06:00:23,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:23,517 INFO L481 AbstractCegarLoop]: Abstraction has 10229 states and 18863 transitions. [2020-12-22 06:00:23,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 10229 states and 18863 transitions. [2020-12-22 06:00:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:00:23,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:23,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:23,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 06:00:23,521 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:23,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:23,521 INFO L82 PathProgramCache]: Analyzing trace with hash 835179443, now seen corresponding path program 1 times [2020-12-22 06:00:23,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:23,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890848017] [2020-12-22 06:00:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:23,619 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 06:00:23,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890848017] [2020-12-22 06:00:23,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:23,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:23,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406281901] [2020-12-22 06:00:23,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:23,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:23,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:23,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:23,621 INFO L87 Difference]: Start difference. First operand 10229 states and 18863 transitions. Second operand 5 states. [2020-12-22 06:00:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:25,699 INFO L93 Difference]: Finished difference Result 24447 states and 45280 transitions. [2020-12-22 06:00:25,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:25,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-22 06:00:25,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:25,721 INFO L225 Difference]: With dead ends: 24447 [2020-12-22 06:00:25,721 INFO L226 Difference]: Without dead ends: 15726 [2020-12-22 06:00:25,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15726 states. [2020-12-22 06:00:26,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15726 to 10229. [2020-12-22 06:00:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10229 states. [2020-12-22 06:00:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10229 states to 10229 states and 18751 transitions. [2020-12-22 06:00:26,357 INFO L78 Accepts]: Start accepts. Automaton has 10229 states and 18751 transitions. Word has length 107 [2020-12-22 06:00:26,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:26,357 INFO L481 AbstractCegarLoop]: Abstraction has 10229 states and 18751 transitions. [2020-12-22 06:00:26,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:26,358 INFO L276 IsEmpty]: Start isEmpty. Operand 10229 states and 18751 transitions. [2020-12-22 06:00:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 06:00:26,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:26,361 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 06:00:26,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 06:00:26,361 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:26,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:26,361 INFO L82 PathProgramCache]: Analyzing trace with hash -575663173, now seen corresponding path program 1 times [2020-12-22 06:00:26,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:26,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594743181] [2020-12-22 06:00:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:26,507 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 06:00:26,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594743181] [2020-12-22 06:00:26,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:26,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:26,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630281505] [2020-12-22 06:00:26,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:26,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:26,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:26,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:26,509 INFO L87 Difference]: Start difference. First operand 10229 states and 18751 transitions. Second operand 6 states. [2020-12-22 06:00:28,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:28,629 INFO L93 Difference]: Finished difference Result 23088 states and 42357 transitions. [2020-12-22 06:00:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:00:28,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-12-22 06:00:28,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:28,657 INFO L225 Difference]: With dead ends: 23088 [2020-12-22 06:00:28,657 INFO L226 Difference]: Without dead ends: 16272 [2020-12-22 06:00:28,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:28,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16272 states. [2020-12-22 06:00:29,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16272 to 10213. [2020-12-22 06:00:29,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10213 states. [2020-12-22 06:00:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10213 states to 10213 states and 18719 transitions. [2020-12-22 06:00:29,380 INFO L78 Accepts]: Start accepts. Automaton has 10213 states and 18719 transitions. Word has length 108 [2020-12-22 06:00:29,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:29,380 INFO L481 AbstractCegarLoop]: Abstraction has 10213 states and 18719 transitions. [2020-12-22 06:00:29,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand 10213 states and 18719 transitions. [2020-12-22 06:00:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:00:29,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:29,383 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 06:00:29,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 06:00:29,383 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:29,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:29,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1342586293, now seen corresponding path program 1 times [2020-12-22 06:00:29,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:29,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416078253] [2020-12-22 06:00:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:29,487 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 06:00:29,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416078253] [2020-12-22 06:00:29,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:29,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:29,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422436427] [2020-12-22 06:00:29,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:29,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:29,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:29,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:29,489 INFO L87 Difference]: Start difference. First operand 10213 states and 18719 transitions. Second operand 5 states. [2020-12-22 06:00:31,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:31,034 INFO L93 Difference]: Finished difference Result 27775 states and 51070 transitions. [2020-12-22 06:00:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:00:31,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 06:00:31,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:31,155 INFO L225 Difference]: With dead ends: 27775 [2020-12-22 06:00:31,155 INFO L226 Difference]: Without dead ends: 20971 [2020-12-22 06:00:31,162 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 06:00:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20971 states. [2020-12-22 06:00:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20971 to 10096. [2020-12-22 06:00:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10096 states. [2020-12-22 06:00:31,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10096 states to 10096 states and 18504 transitions. [2020-12-22 06:00:31,798 INFO L78 Accepts]: Start accepts. Automaton has 10096 states and 18504 transitions. Word has length 110 [2020-12-22 06:00:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:31,798 INFO L481 AbstractCegarLoop]: Abstraction has 10096 states and 18504 transitions. [2020-12-22 06:00:31,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 10096 states and 18504 transitions. [2020-12-22 06:00:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 06:00:31,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:31,801 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 06:00:31,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 06:00:31,801 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:31,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:31,801 INFO L82 PathProgramCache]: Analyzing trace with hash -354058162, now seen corresponding path program 1 times [2020-12-22 06:00:31,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:31,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203324893] [2020-12-22 06:00:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:31,928 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 06:00:31,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203324893] [2020-12-22 06:00:31,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:31,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:31,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471015489] [2020-12-22 06:00:31,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:31,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:31,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:31,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:31,932 INFO L87 Difference]: Start difference. First operand 10096 states and 18504 transitions. Second operand 5 states. [2020-12-22 06:00:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:33,316 INFO L93 Difference]: Finished difference Result 22776 states and 41589 transitions. [2020-12-22 06:00:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:33,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-12-22 06:00:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:33,339 INFO L225 Difference]: With dead ends: 22776 [2020-12-22 06:00:33,339 INFO L226 Difference]: Without dead ends: 16306 [2020-12-22 06:00:33,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:00:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16306 states. [2020-12-22 06:00:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16306 to 10113. [2020-12-22 06:00:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10113 states. [2020-12-22 06:00:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10113 states to 10113 states and 18519 transitions. [2020-12-22 06:00:34,013 INFO L78 Accepts]: Start accepts. Automaton has 10113 states and 18519 transitions. Word has length 111 [2020-12-22 06:00:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:34,013 INFO L481 AbstractCegarLoop]: Abstraction has 10113 states and 18519 transitions. [2020-12-22 06:00:34,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 10113 states and 18519 transitions. [2020-12-22 06:00:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 06:00:34,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:34,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:34,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 06:00:34,016 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:34,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1941695361, now seen corresponding path program 1 times [2020-12-22 06:00:34,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:34,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112158375] [2020-12-22 06:00:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:34,126 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 06:00:34,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112158375] [2020-12-22 06:00:34,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:34,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:34,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865222381] [2020-12-22 06:00:34,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:34,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:34,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:34,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:34,128 INFO L87 Difference]: Start difference. First operand 10113 states and 18519 transitions. Second operand 6 states. [2020-12-22 06:00:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:35,180 INFO L93 Difference]: Finished difference Result 16947 states and 30939 transitions. [2020-12-22 06:00:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:35,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-12-22 06:00:35,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:35,193 INFO L225 Difference]: With dead ends: 16947 [2020-12-22 06:00:35,193 INFO L226 Difference]: Without dead ends: 10126 [2020-12-22 06:00:35,199 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 06:00:35,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10126 states. [2020-12-22 06:00:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10126 to 10113. [2020-12-22 06:00:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10113 states. [2020-12-22 06:00:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10113 states to 10113 states and 18417 transitions. [2020-12-22 06:00:35,820 INFO L78 Accepts]: Start accepts. Automaton has 10113 states and 18417 transitions. Word has length 118 [2020-12-22 06:00:35,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:35,820 INFO L481 AbstractCegarLoop]: Abstraction has 10113 states and 18417 transitions. [2020-12-22 06:00:35,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 10113 states and 18417 transitions. [2020-12-22 06:00:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 06:00:35,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:35,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:35,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 06:00:35,824 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:35,824 INFO L82 PathProgramCache]: Analyzing trace with hash -108167085, now seen corresponding path program 1 times [2020-12-22 06:00:35,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:35,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117291054] [2020-12-22 06:00:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:35,990 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 06:00:35,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117291054] [2020-12-22 06:00:35,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:35,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:35,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746041005] [2020-12-22 06:00:35,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:35,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:35,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:35,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:35,993 INFO L87 Difference]: Start difference. First operand 10113 states and 18417 transitions. Second operand 7 states. [2020-12-22 06:00:43,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:43,300 INFO L93 Difference]: Finished difference Result 32197 states and 58499 transitions. [2020-12-22 06:00:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 06:00:43,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-12-22 06:00:43,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:43,332 INFO L225 Difference]: With dead ends: 32197 [2020-12-22 06:00:43,332 INFO L226 Difference]: Without dead ends: 25752 [2020-12-22 06:00:43,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-12-22 06:00:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25752 states. [2020-12-22 06:00:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25752 to 10569. [2020-12-22 06:00:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-12-22 06:00:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 19169 transitions. [2020-12-22 06:00:44,139 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 19169 transitions. Word has length 119 [2020-12-22 06:00:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:44,140 INFO L481 AbstractCegarLoop]: Abstraction has 10569 states and 19169 transitions. [2020-12-22 06:00:44,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 19169 transitions. [2020-12-22 06:00:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 06:00:44,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:44,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:44,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 06:00:44,144 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:44,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1705490833, now seen corresponding path program 1 times [2020-12-22 06:00:44,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:44,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789025151] [2020-12-22 06:00:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:44,235 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 06:00:44,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789025151] [2020-12-22 06:00:44,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:44,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:44,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761245624] [2020-12-22 06:00:44,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:44,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:44,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:44,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:44,237 INFO L87 Difference]: Start difference. First operand 10569 states and 19169 transitions. Second operand 5 states. [2020-12-22 06:00:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:48,034 INFO L93 Difference]: Finished difference Result 44322 states and 78967 transitions. [2020-12-22 06:00:48,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:48,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-12-22 06:00:48,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:48,110 INFO L225 Difference]: With dead ends: 44322 [2020-12-22 06:00:48,110 INFO L226 Difference]: Without dead ends: 37417 [2020-12-22 06:00:48,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:00:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37417 states. [2020-12-22 06:00:49,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37417 to 13114. [2020-12-22 06:00:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13114 states. [2020-12-22 06:00:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13114 states to 13114 states and 23163 transitions. [2020-12-22 06:00:49,534 INFO L78 Accepts]: Start accepts. Automaton has 13114 states and 23163 transitions. Word has length 119 [2020-12-22 06:00:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:49,534 INFO L481 AbstractCegarLoop]: Abstraction has 13114 states and 23163 transitions. [2020-12-22 06:00:49,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:49,535 INFO L276 IsEmpty]: Start isEmpty. Operand 13114 states and 23163 transitions. [2020-12-22 06:00:49,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 06:00:49,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:49,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:49,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 06:00:49,539 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1471738225, now seen corresponding path program 1 times [2020-12-22 06:00:49,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:49,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018312817] [2020-12-22 06:00:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:49,680 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 06:00:49,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018312817] [2020-12-22 06:00:49,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:49,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:49,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774199217] [2020-12-22 06:00:49,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:49,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:49,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:49,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:49,682 INFO L87 Difference]: Start difference. First operand 13114 states and 23163 transitions. Second operand 7 states. [2020-12-22 06:00:51,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:51,713 INFO L93 Difference]: Finished difference Result 21160 states and 37609 transitions. [2020-12-22 06:00:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:51,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-12-22 06:00:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:51,739 INFO L225 Difference]: With dead ends: 21160 [2020-12-22 06:00:51,739 INFO L226 Difference]: Without dead ends: 21147 [2020-12-22 06:00:51,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:51,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21147 states. [2020-12-22 06:00:53,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21147 to 13135. [2020-12-22 06:00:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13135 states. [2020-12-22 06:00:53,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13135 states to 13135 states and 23177 transitions. [2020-12-22 06:00:53,043 INFO L78 Accepts]: Start accepts. Automaton has 13135 states and 23177 transitions. Word has length 119 [2020-12-22 06:00:53,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:53,043 INFO L481 AbstractCegarLoop]: Abstraction has 13135 states and 23177 transitions. [2020-12-22 06:00:53,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:53,043 INFO L276 IsEmpty]: Start isEmpty. Operand 13135 states and 23177 transitions. [2020-12-22 06:00:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 06:00:53,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:53,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:53,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:00:53,046 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:53,047 INFO L82 PathProgramCache]: Analyzing trace with hash -536210861, now seen corresponding path program 1 times [2020-12-22 06:00:53,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:53,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343605964] [2020-12-22 06:00:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:53,169 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 06:00:53,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343605964] [2020-12-22 06:00:53,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:53,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:53,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554161243] [2020-12-22 06:00:53,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:53,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:53,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:53,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:53,171 INFO L87 Difference]: Start difference. First operand 13135 states and 23177 transitions. Second operand 7 states. [2020-12-22 06:00:59,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:59,980 INFO L93 Difference]: Finished difference Result 72622 states and 130146 transitions. [2020-12-22 06:00:59,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:00:59,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-12-22 06:00:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:00,058 INFO L225 Difference]: With dead ends: 72622 [2020-12-22 06:01:00,058 INFO L226 Difference]: Without dead ends: 61322 [2020-12-22 06:01:00,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:01:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61322 states. [2020-12-22 06:01:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61322 to 25625. [2020-12-22 06:01:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25625 states. [2020-12-22 06:01:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25625 states to 25625 states and 45338 transitions. [2020-12-22 06:01:02,941 INFO L78 Accepts]: Start accepts. Automaton has 25625 states and 45338 transitions. Word has length 135 [2020-12-22 06:01:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:02,941 INFO L481 AbstractCegarLoop]: Abstraction has 25625 states and 45338 transitions. [2020-12-22 06:01:02,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:01:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 25625 states and 45338 transitions. [2020-12-22 06:01:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 06:01:02,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:02,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:02,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-22 06:01:02,947 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:02,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:02,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1491540264, now seen corresponding path program 1 times [2020-12-22 06:01:02,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:02,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670980198] [2020-12-22 06:01:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:03,114 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 06:01:03,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670980198] [2020-12-22 06:01:03,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:03,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:03,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981360801] [2020-12-22 06:01:03,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:03,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:03,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:03,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:03,116 INFO L87 Difference]: Start difference. First operand 25625 states and 45338 transitions. Second operand 3 states. [2020-12-22 06:01:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:07,964 INFO L93 Difference]: Finished difference Result 61804 states and 109389 transitions. [2020-12-22 06:01:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:07,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-12-22 06:01:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:08,008 INFO L225 Difference]: With dead ends: 61804 [2020-12-22 06:01:08,008 INFO L226 Difference]: Without dead ends: 38889 [2020-12-22 06:01:08,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38889 states. [2020-12-22 06:01:10,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38889 to 25049. [2020-12-22 06:01:10,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25049 states. [2020-12-22 06:01:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25049 states to 25049 states and 44127 transitions. [2020-12-22 06:01:10,650 INFO L78 Accepts]: Start accepts. Automaton has 25049 states and 44127 transitions. Word has length 136 [2020-12-22 06:01:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:10,650 INFO L481 AbstractCegarLoop]: Abstraction has 25049 states and 44127 transitions. [2020-12-22 06:01:10,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand 25049 states and 44127 transitions. [2020-12-22 06:01:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 06:01:10,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:10,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:10,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-22 06:01:10,656 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:10,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1135670072, now seen corresponding path program 1 times [2020-12-22 06:01:10,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:10,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766543617] [2020-12-22 06:01:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:10,743 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 06:01:10,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766543617] [2020-12-22 06:01:10,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:10,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:10,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162633275] [2020-12-22 06:01:10,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:10,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:10,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:10,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:10,745 INFO L87 Difference]: Start difference. First operand 25049 states and 44127 transitions. Second operand 5 states. [2020-12-22 06:01:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:15,447 INFO L93 Difference]: Finished difference Result 59162 states and 102162 transitions. [2020-12-22 06:01:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:01:15,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-12-22 06:01:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:15,498 INFO L225 Difference]: With dead ends: 59162 [2020-12-22 06:01:15,498 INFO L226 Difference]: Without dead ends: 34529 [2020-12-22 06:01:15,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34529 states. [2020-12-22 06:01:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34529 to 25136. [2020-12-22 06:01:18,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25136 states. [2020-12-22 06:01:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25136 states to 25136 states and 44214 transitions. [2020-12-22 06:01:18,309 INFO L78 Accepts]: Start accepts. Automaton has 25136 states and 44214 transitions. Word has length 148 [2020-12-22 06:01:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:18,309 INFO L481 AbstractCegarLoop]: Abstraction has 25136 states and 44214 transitions. [2020-12-22 06:01:18,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 25136 states and 44214 transitions. [2020-12-22 06:01:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 06:01:18,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:18,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:18,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-22 06:01:18,316 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:18,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:18,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1370117975, now seen corresponding path program 1 times [2020-12-22 06:01:18,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:18,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784322995] [2020-12-22 06:01:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:18,390 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 06:01:18,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784322995] [2020-12-22 06:01:18,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:18,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:18,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258073409] [2020-12-22 06:01:18,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:18,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:18,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:18,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:18,392 INFO L87 Difference]: Start difference. First operand 25136 states and 44214 transitions. Second operand 4 states. [2020-12-22 06:01:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:23,289 INFO L93 Difference]: Finished difference Result 60570 states and 105964 transitions. [2020-12-22 06:01:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:23,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-12-22 06:01:23,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:23,335 INFO L225 Difference]: With dead ends: 60570 [2020-12-22 06:01:23,335 INFO L226 Difference]: Without dead ends: 35500 [2020-12-22 06:01:23,353 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 06:01:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35500 states. [2020-12-22 06:01:25,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35500 to 18039. [2020-12-22 06:01:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18039 states. [2020-12-22 06:01:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18039 states to 18039 states and 31345 transitions. [2020-12-22 06:01:25,603 INFO L78 Accepts]: Start accepts. Automaton has 18039 states and 31345 transitions. Word has length 149 [2020-12-22 06:01:25,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:25,604 INFO L481 AbstractCegarLoop]: Abstraction has 18039 states and 31345 transitions. [2020-12-22 06:01:25,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 18039 states and 31345 transitions. [2020-12-22 06:01:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 06:01:25,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:25,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:01:25,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 06:01:25,609 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:25,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:25,609 INFO L82 PathProgramCache]: Analyzing trace with hash -916874883, now seen corresponding path program 1 times [2020-12-22 06:01:25,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:25,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120422501] [2020-12-22 06:01:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:25,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120422501] [2020-12-22 06:01:25,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:25,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:25,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399311586] [2020-12-22 06:01:25,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:25,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:25,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:25,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:25,729 INFO L87 Difference]: Start difference. First operand 18039 states and 31345 transitions. Second operand 6 states. [2020-12-22 06:01:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:33,680 INFO L93 Difference]: Finished difference Result 62953 states and 111053 transitions. [2020-12-22 06:01:33,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:01:33,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-12-22 06:01:33,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:33,744 INFO L225 Difference]: With dead ends: 62953 [2020-12-22 06:01:33,744 INFO L226 Difference]: Without dead ends: 45046 [2020-12-22 06:01:33,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:01:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45046 states. [2020-12-22 06:01:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45046 to 28937. [2020-12-22 06:01:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28937 states. [2020-12-22 06:01:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28937 states to 28937 states and 51207 transitions. [2020-12-22 06:01:37,175 INFO L78 Accepts]: Start accepts. Automaton has 28937 states and 51207 transitions. Word has length 170 [2020-12-22 06:01:37,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:37,176 INFO L481 AbstractCegarLoop]: Abstraction has 28937 states and 51207 transitions. [2020-12-22 06:01:37,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand 28937 states and 51207 transitions. [2020-12-22 06:01:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 06:01:37,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:37,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:01:37,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-22 06:01:37,182 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:37,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:37,182 INFO L82 PathProgramCache]: Analyzing trace with hash -920903109, now seen corresponding path program 1 times [2020-12-22 06:01:37,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:37,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253545840] [2020-12-22 06:01:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:01:37,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253545840] [2020-12-22 06:01:37,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:37,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:37,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469397132] [2020-12-22 06:01:37,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:37,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:37,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:37,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:37,269 INFO L87 Difference]: Start difference. First operand 28937 states and 51207 transitions. Second operand 3 states. [2020-12-22 06:01:40,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:40,035 INFO L93 Difference]: Finished difference Result 54367 states and 97051 transitions. [2020-12-22 06:01:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:40,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2020-12-22 06:01:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:40,071 INFO L225 Difference]: With dead ends: 54367 [2020-12-22 06:01:40,071 INFO L226 Difference]: Without dead ends: 25678 [2020-12-22 06:01:40,092 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 06:01:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25678 states. [2020-12-22 06:01:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25678 to 25665. [2020-12-22 06:01:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25665 states. [2020-12-22 06:01:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25665 states to 25665 states and 46146 transitions. [2020-12-22 06:01:42,665 INFO L78 Accepts]: Start accepts. Automaton has 25665 states and 46146 transitions. Word has length 170 [2020-12-22 06:01:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:42,665 INFO L481 AbstractCegarLoop]: Abstraction has 25665 states and 46146 transitions. [2020-12-22 06:01:42,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 25665 states and 46146 transitions. [2020-12-22 06:01:42,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 06:01:42,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:42,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:01:42,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 06:01:42,674 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash -770625473, now seen corresponding path program 1 times [2020-12-22 06:01:42,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:42,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760303110] [2020-12-22 06:01:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:01:42,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760303110] [2020-12-22 06:01:42,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:42,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:42,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993988101] [2020-12-22 06:01:42,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:42,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:42,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:42,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:42,799 INFO L87 Difference]: Start difference. First operand 25665 states and 46146 transitions. Second operand 5 states. [2020-12-22 06:01:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:47,821 INFO L93 Difference]: Finished difference Result 76680 states and 138041 transitions. [2020-12-22 06:01:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:47,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-12-22 06:01:47,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:47,889 INFO L225 Difference]: With dead ends: 76680 [2020-12-22 06:01:47,889 INFO L226 Difference]: Without dead ends: 51241 [2020-12-22 06:01:47,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51241 states. [2020-12-22 06:01:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51241 to 51241. [2020-12-22 06:01:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51241 states. [2020-12-22 06:01:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51241 states to 51241 states and 92162 transitions. [2020-12-22 06:01:53,267 INFO L78 Accepts]: Start accepts. Automaton has 51241 states and 92162 transitions. Word has length 171 [2020-12-22 06:01:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:53,267 INFO L481 AbstractCegarLoop]: Abstraction has 51241 states and 92162 transitions. [2020-12-22 06:01:53,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:53,267 INFO L276 IsEmpty]: Start isEmpty. Operand 51241 states and 92162 transitions. [2020-12-22 06:01:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 06:01:53,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:53,278 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:01:53,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-12-22 06:01:53,278 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:53,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1248662472, now seen corresponding path program 1 times [2020-12-22 06:01:53,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:53,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202772529] [2020-12-22 06:01:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:53,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202772529] [2020-12-22 06:01:53,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:53,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:53,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615015595] [2020-12-22 06:01:53,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:53,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:53,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:53,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:53,410 INFO L87 Difference]: Start difference. First operand 51241 states and 92162 transitions. Second operand 6 states. [2020-12-22 06:02:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:06,421 INFO L93 Difference]: Finished difference Result 151691 states and 273444 transitions. [2020-12-22 06:02:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:02:06,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-12-22 06:02:06,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:06,594 INFO L225 Difference]: With dead ends: 151691 [2020-12-22 06:02:06,594 INFO L226 Difference]: Without dead ends: 100650 [2020-12-22 06:02:06,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:02:06,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100650 states. [2020-12-22 06:02:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100650 to 73047. [2020-12-22 06:02:14,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73047 states. [2020-12-22 06:02:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73047 states to 73047 states and 132002 transitions. [2020-12-22 06:02:14,206 INFO L78 Accepts]: Start accepts. Automaton has 73047 states and 132002 transitions. Word has length 171 [2020-12-22 06:02:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:14,206 INFO L481 AbstractCegarLoop]: Abstraction has 73047 states and 132002 transitions. [2020-12-22 06:02:14,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 73047 states and 132002 transitions. [2020-12-22 06:02:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-22 06:02:14,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:14,217 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:14,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 06:02:14,217 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:14,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1824312048, now seen corresponding path program 1 times [2020-12-22 06:02:14,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:14,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726439902] [2020-12-22 06:02:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:02:14,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726439902] [2020-12-22 06:02:14,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:14,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:14,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520188347] [2020-12-22 06:02:14,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:14,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:14,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:14,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:14,320 INFO L87 Difference]: Start difference. First operand 73047 states and 132002 transitions. Second operand 5 states. [2020-12-22 06:02:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:27,778 INFO L93 Difference]: Finished difference Result 218537 states and 395214 transitions. [2020-12-22 06:02:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:27,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-12-22 06:02:27,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:28,172 INFO L225 Difference]: With dead ends: 218537 [2020-12-22 06:02:28,172 INFO L226 Difference]: Without dead ends: 145936 [2020-12-22 06:02:28,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145936 states. [2020-12-22 06:02:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145936 to 145932. [2020-12-22 06:02:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145932 states. [2020-12-22 06:02:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145932 states to 145932 states and 263734 transitions. [2020-12-22 06:02:42,823 INFO L78 Accepts]: Start accepts. Automaton has 145932 states and 263734 transitions. Word has length 172 [2020-12-22 06:02:42,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:42,824 INFO L481 AbstractCegarLoop]: Abstraction has 145932 states and 263734 transitions. [2020-12-22 06:02:42,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:42,824 INFO L276 IsEmpty]: Start isEmpty. Operand 145932 states and 263734 transitions. [2020-12-22 06:02:42,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-22 06:02:42,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:42,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:42,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-22 06:02:42,846 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:42,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:42,847 INFO L82 PathProgramCache]: Analyzing trace with hash -954889173, now seen corresponding path program 1 times [2020-12-22 06:02:42,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:42,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212649851] [2020-12-22 06:02:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:02:42,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212649851] [2020-12-22 06:02:42,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:42,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:42,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176726001] [2020-12-22 06:02:42,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:42,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:42,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:42,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:42,994 INFO L87 Difference]: Start difference. First operand 145932 states and 263734 transitions. Second operand 6 states. [2020-12-22 06:03:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:11,787 INFO L93 Difference]: Finished difference Result 402838 states and 723892 transitions. [2020-12-22 06:03:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:03:11,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-12-22 06:03:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:12,444 INFO L225 Difference]: With dead ends: 402838 [2020-12-22 06:03:12,444 INFO L226 Difference]: Without dead ends: 257736 [2020-12-22 06:03:12,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:03:12,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257736 states.