/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:16:00,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:16:00,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:16:00,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:16:00,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:16:00,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:16:00,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:16:00,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:16:00,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:16:00,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:16:00,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:16:00,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:16:00,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:16:00,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:16:00,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:16:00,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:16:00,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:16:00,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:16:00,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:16:00,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:16:00,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:16:00,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:16:00,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:16:00,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:16:00,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:16:00,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:16:00,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:16:00,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:16:00,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:16:00,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:16:00,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:16:00,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:16:00,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:16:00,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:16:00,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:16:00,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:16:00,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:16:00,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:16:00,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:16:00,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:16:00,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:16:00,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 06:16:00,603 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:16:00,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:16:00,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:16:00,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:16:00,606 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:16:00,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:16:00,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:16:00,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:16:00,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:16:00,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:16:00,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:16:00,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:16:00,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:16:00,607 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:16:00,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:16:00,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:16:00,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:16:00,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:16:00,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:16:00,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:16:00,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:16:00,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:16:00,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:16:00,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:16:00,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:16:00,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:16:00,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:16:00,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:16:00,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:16:00,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:16:00,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:16:00,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:16:00,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:16:00,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:16:00,960 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:16:00,961 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-08-22 06:16:01,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31a54e179/e16d054641bb45569f1bf83a9cdf5598/FLAGcb629f985 [2020-08-22 06:16:01,508 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:16:01,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-08-22 06:16:01,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31a54e179/e16d054641bb45569f1bf83a9cdf5598/FLAGcb629f985 [2020-08-22 06:16:01,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31a54e179/e16d054641bb45569f1bf83a9cdf5598 [2020-08-22 06:16:01,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:16:01,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:16:01,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:16:01,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:16:01,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:16:01,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:16:01" (1/1) ... [2020-08-22 06:16:01,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4700e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:01, skipping insertion in model container [2020-08-22 06:16:01,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:16:01" (1/1) ... [2020-08-22 06:16:01,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:16:01,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:16:02,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:16:02,174 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:16:02,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:16:02,201 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:16:02,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:02 WrapperNode [2020-08-22 06:16:02,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:16:02,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:16:02,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:16:02,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:16:02,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:02" (1/1) ... [2020-08-22 06:16:02,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:02" (1/1) ... [2020-08-22 06:16:02,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:02" (1/1) ... [2020-08-22 06:16:02,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:02" (1/1) ... [2020-08-22 06:16:02,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:02" (1/1) ... [2020-08-22 06:16:02,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:02" (1/1) ... [2020-08-22 06:16:02,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:02" (1/1) ... [2020-08-22 06:16:02,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:16:02,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:16:02,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:16:02,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:16:02,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-22 06:16:02,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:16:02,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:16:02,379 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-22 06:16:02,379 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-22 06:16:02,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:16:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:16:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:16:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-22 06:16:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-22 06:16:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:16:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:16:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:16:02,583 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:16:02,583 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 06:16:02,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:16:02 BoogieIcfgContainer [2020-08-22 06:16:02,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:16:02,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:16:02,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:16:02,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:16:02,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:16:01" (1/3) ... [2020-08-22 06:16:02,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5e94a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:16:02, skipping insertion in model container [2020-08-22 06:16:02,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:16:02" (2/3) ... [2020-08-22 06:16:02,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5e94a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:16:02, skipping insertion in model container [2020-08-22 06:16:02,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:16:02" (3/3) ... [2020-08-22 06:16:02,596 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-08-22 06:16:02,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:16:02,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:16:02,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:16:02,733 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:16:02,733 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:16:02,733 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:16:02,733 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:16:02,734 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:16:02,736 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:16:02,736 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:16:02,736 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:16:02,756 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-22 06:16:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 06:16:02,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:02,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:02,763 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:02,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:02,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-08-22 06:16:02,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:02,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409679088] [2020-08-22 06:16:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:02,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:02,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:16:02,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409679088] [2020-08-22 06:16:02,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:16:02,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:16:02,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972341787] [2020-08-22 06:16:03,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:16:03,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:16:03,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:16:03,034 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-08-22 06:16:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:03,242 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-22 06:16:03,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:16:03,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 06:16:03,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:03,261 INFO L225 Difference]: With dead ends: 44 [2020-08-22 06:16:03,261 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 06:16:03,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:16:03,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 06:16:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 06:16:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 06:16:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-22 06:16:03,345 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-08-22 06:16:03,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:03,346 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-22 06:16:03,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:16:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-22 06:16:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 06:16:03,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:03,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:03,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:16:03,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:03,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-08-22 06:16:03,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:03,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924319741] [2020-08-22 06:16:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:16:03,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924319741] [2020-08-22 06:16:03,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:16:03,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:16:03,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044176645] [2020-08-22 06:16:03,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:16:03,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:03,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:16:03,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:16:03,490 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-08-22 06:16:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:03,567 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-08-22 06:16:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:16:03,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 06:16:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:03,569 INFO L225 Difference]: With dead ends: 36 [2020-08-22 06:16:03,570 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 06:16:03,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:16:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 06:16:03,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-22 06:16:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 06:16:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-22 06:16:03,581 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-08-22 06:16:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:03,581 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-22 06:16:03,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:16:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-22 06:16:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 06:16:03,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:03,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:03,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:16:03,584 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:03,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-08-22 06:16:03,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:03,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364370661] [2020-08-22 06:16:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:16:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 06:16:03,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364370661] [2020-08-22 06:16:03,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:03,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 06:16:03,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219148639] [2020-08-22 06:16:03,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:16:03,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:03,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:16:03,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:16:03,726 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-08-22 06:16:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:03,816 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-08-22 06:16:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:16:03,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-22 06:16:03,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:03,820 INFO L225 Difference]: With dead ends: 58 [2020-08-22 06:16:03,820 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 06:16:03,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:16:03,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 06:16:03,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-22 06:16:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 06:16:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-08-22 06:16:03,832 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-08-22 06:16:03,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:03,832 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-08-22 06:16:03,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:16:03,833 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-08-22 06:16:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 06:16:03,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:03,835 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] [2020-08-22 06:16:03,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:16:03,836 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:03,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:03,836 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-08-22 06:16:03,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:03,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393356290] [2020-08-22 06:16:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:03,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 06:16:04,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393356290] [2020-08-22 06:16:04,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:04,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 06:16:04,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224225297] [2020-08-22 06:16:04,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:16:04,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:04,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:16:04,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:16:04,016 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-08-22 06:16:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:04,239 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-08-22 06:16:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 06:16:04,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-22 06:16:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:04,244 INFO L225 Difference]: With dead ends: 54 [2020-08-22 06:16:04,245 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 06:16:04,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:16:04,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 06:16:04,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-08-22 06:16:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 06:16:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-08-22 06:16:04,274 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-08-22 06:16:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:04,274 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-08-22 06:16:04,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:16:04,275 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-08-22 06:16:04,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-22 06:16:04,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:04,279 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2020-08-22 06:16:04,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:16:04,281 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:04,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:04,281 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-08-22 06:16:04,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:04,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964976428] [2020-08-22 06:16:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:16:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 06:16:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 06:16:04,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964976428] [2020-08-22 06:16:04,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:04,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 06:16:04,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452941307] [2020-08-22 06:16:04,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:16:04,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:04,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:16:04,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:16:04,400 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2020-08-22 06:16:04,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:04,468 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2020-08-22 06:16:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:16:04,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-08-22 06:16:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:04,471 INFO L225 Difference]: With dead ends: 94 [2020-08-22 06:16:04,471 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 06:16:04,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:16:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 06:16:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-08-22 06:16:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-22 06:16:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2020-08-22 06:16:04,484 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 39 [2020-08-22 06:16:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:04,484 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-08-22 06:16:04,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:16:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2020-08-22 06:16:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 06:16:04,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:04,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2020-08-22 06:16:04,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:16:04,487 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:04,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:04,487 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-08-22 06:16:04,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:04,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801187293] [2020-08-22 06:16:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 06:16:04,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801187293] [2020-08-22 06:16:04,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:04,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 06:16:04,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016607281] [2020-08-22 06:16:04,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:16:04,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:04,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:16:04,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:16:04,611 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand 8 states. [2020-08-22 06:16:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:04,724 INFO L93 Difference]: Finished difference Result 103 states and 158 transitions. [2020-08-22 06:16:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:16:04,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-22 06:16:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:04,727 INFO L225 Difference]: With dead ends: 103 [2020-08-22 06:16:04,727 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 06:16:04,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:16:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 06:16:04,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-08-22 06:16:04,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 06:16:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2020-08-22 06:16:04,740 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 40 [2020-08-22 06:16:04,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:04,740 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2020-08-22 06:16:04,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:16:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2020-08-22 06:16:04,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 06:16:04,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:04,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2020-08-22 06:16:04,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:16:04,743 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:04,744 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times [2020-08-22 06:16:04,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:04,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762215479] [2020-08-22 06:16:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 06:16:04,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762215479] [2020-08-22 06:16:04,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:04,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 06:16:04,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757232912] [2020-08-22 06:16:04,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:16:04,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:04,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:16:04,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:16:04,870 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 8 states. [2020-08-22 06:16:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:05,061 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-08-22 06:16:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:16:05,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-08-22 06:16:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:05,064 INFO L225 Difference]: With dead ends: 86 [2020-08-22 06:16:05,064 INFO L226 Difference]: Without dead ends: 82 [2020-08-22 06:16:05,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:16:05,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-22 06:16:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-22 06:16:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-22 06:16:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions. [2020-08-22 06:16:05,081 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 41 [2020-08-22 06:16:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:05,081 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions. [2020-08-22 06:16:05,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:16:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-08-22 06:16:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 06:16:05,084 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:05,085 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:05,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:16:05,085 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:05,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:05,086 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-08-22 06:16:05,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:05,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586921215] [2020-08-22 06:16:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:16:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 06:16:05,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586921215] [2020-08-22 06:16:05,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:05,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 06:16:05,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480652415] [2020-08-22 06:16:05,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:16:05,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:05,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:16:05,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:16:05,216 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand 8 states. [2020-08-22 06:16:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:05,365 INFO L93 Difference]: Finished difference Result 167 states and 288 transitions. [2020-08-22 06:16:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 06:16:05,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-22 06:16:05,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:05,370 INFO L225 Difference]: With dead ends: 167 [2020-08-22 06:16:05,370 INFO L226 Difference]: Without dead ends: 94 [2020-08-22 06:16:05,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:16:05,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-22 06:16:05,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-08-22 06:16:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-22 06:16:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2020-08-22 06:16:05,411 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 54 [2020-08-22 06:16:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:05,412 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2020-08-22 06:16:05,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:16:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2020-08-22 06:16:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 06:16:05,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:05,414 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:05,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:16:05,415 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:05,415 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2020-08-22 06:16:05,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:05,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768352116] [2020-08-22 06:16:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 06:16:05,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768352116] [2020-08-22 06:16:05,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:05,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:16:05,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918344015] [2020-08-22 06:16:05,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:16:05,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:05,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:16:05,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:16:05,567 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 10 states. [2020-08-22 06:16:05,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:05,826 INFO L93 Difference]: Finished difference Result 188 states and 331 transitions. [2020-08-22 06:16:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 06:16:05,827 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-08-22 06:16:05,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:05,829 INFO L225 Difference]: With dead ends: 188 [2020-08-22 06:16:05,829 INFO L226 Difference]: Without dead ends: 109 [2020-08-22 06:16:05,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:16:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-22 06:16:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-08-22 06:16:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 06:16:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2020-08-22 06:16:05,847 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 55 [2020-08-22 06:16:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:05,848 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2020-08-22 06:16:05,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:16:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2020-08-22 06:16:05,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 06:16:05,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:05,850 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:05,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:16:05,851 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:05,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:05,851 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 2 times [2020-08-22 06:16:05,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:05,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328956089] [2020-08-22 06:16:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-22 06:16:06,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328956089] [2020-08-22 06:16:06,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:06,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 06:16:06,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491322718] [2020-08-22 06:16:06,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:16:06,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:06,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:16:06,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:16:06,094 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand 12 states. [2020-08-22 06:16:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:06,482 INFO L93 Difference]: Finished difference Result 199 states and 354 transitions. [2020-08-22 06:16:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 06:16:06,483 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-08-22 06:16:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:06,485 INFO L225 Difference]: With dead ends: 199 [2020-08-22 06:16:06,485 INFO L226 Difference]: Without dead ends: 86 [2020-08-22 06:16:06,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-08-22 06:16:06,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-22 06:16:06,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2020-08-22 06:16:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-22 06:16:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2020-08-22 06:16:06,497 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 82 [2020-08-22 06:16:06,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:06,497 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2020-08-22 06:16:06,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:16:06,498 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2020-08-22 06:16:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-22 06:16:06,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:06,500 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:06,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:16:06,500 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash -2119203654, now seen corresponding path program 2 times [2020-08-22 06:16:06,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:06,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494491509] [2020-08-22 06:16:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 06:16:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-08-22 06:16:06,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494491509] [2020-08-22 06:16:06,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:06,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:16:06,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426867537] [2020-08-22 06:16:06,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:16:06,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:06,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:16:06,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:16:06,794 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand 10 states. [2020-08-22 06:16:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:07,012 INFO L93 Difference]: Finished difference Result 142 states and 204 transitions. [2020-08-22 06:16:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 06:16:07,013 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-08-22 06:16:07,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:07,014 INFO L225 Difference]: With dead ends: 142 [2020-08-22 06:16:07,014 INFO L226 Difference]: Without dead ends: 78 [2020-08-22 06:16:07,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:16:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-22 06:16:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-22 06:16:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 06:16:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-08-22 06:16:07,033 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 110 [2020-08-22 06:16:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:07,034 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-08-22 06:16:07,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:16:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-08-22 06:16:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-22 06:16:07,037 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:07,038 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 13, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:07,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 06:16:07,038 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:07,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:07,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1263382818, now seen corresponding path program 3 times [2020-08-22 06:16:07,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:07,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282577426] [2020-08-22 06:16:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 06:16:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 06:16:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 06:16:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 133 proven. 373 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-08-22 06:16:07,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282577426] [2020-08-22 06:16:07,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:07,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 06:16:07,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939751616] [2020-08-22 06:16:07,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 06:16:07,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:07,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 06:16:07,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-22 06:16:07,647 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 15 states. [2020-08-22 06:16:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:08,220 INFO L93 Difference]: Finished difference Result 184 states and 282 transitions. [2020-08-22 06:16:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 06:16:08,221 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 192 [2020-08-22 06:16:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:08,225 INFO L225 Difference]: With dead ends: 184 [2020-08-22 06:16:08,225 INFO L226 Difference]: Without dead ends: 111 [2020-08-22 06:16:08,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2020-08-22 06:16:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-22 06:16:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-08-22 06:16:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-22 06:16:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions. [2020-08-22 06:16:08,242 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 192 [2020-08-22 06:16:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:08,244 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions. [2020-08-22 06:16:08,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 06:16:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions. [2020-08-22 06:16:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 06:16:08,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:08,250 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:08,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 06:16:08,251 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:08,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:08,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2102107778, now seen corresponding path program 1 times [2020-08-22 06:16:08,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:08,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814407640] [2020-08-22 06:16:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 06:16:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 109 proven. 85 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-08-22 06:16:08,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814407640] [2020-08-22 06:16:08,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:08,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 06:16:08,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225624662] [2020-08-22 06:16:08,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 06:16:08,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:08,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 06:16:08,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:16:08,581 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand 11 states. [2020-08-22 06:16:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:08,842 INFO L93 Difference]: Finished difference Result 188 states and 266 transitions. [2020-08-22 06:16:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 06:16:08,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-22 06:16:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:08,844 INFO L225 Difference]: With dead ends: 188 [2020-08-22 06:16:08,844 INFO L226 Difference]: Without dead ends: 101 [2020-08-22 06:16:08,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-22 06:16:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-22 06:16:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2020-08-22 06:16:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 06:16:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-08-22 06:16:08,854 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 136 [2020-08-22 06:16:08,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:08,854 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-08-22 06:16:08,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 06:16:08,854 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-08-22 06:16:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 06:16:08,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:08,857 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:08,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 06:16:08,857 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:08,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:08,858 INFO L82 PathProgramCache]: Analyzing trace with hash 677703633, now seen corresponding path program 2 times [2020-08-22 06:16:08,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:08,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717529260] [2020-08-22 06:16:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:16:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 138 proven. 250 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2020-08-22 06:16:09,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717529260] [2020-08-22 06:16:09,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:09,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 06:16:09,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776292131] [2020-08-22 06:16:09,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 06:16:09,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:09,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 06:16:09,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:16:09,251 INFO L87 Difference]: Start difference. First operand 98 states and 130 transitions. Second operand 14 states. [2020-08-22 06:16:09,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:09,856 INFO L93 Difference]: Finished difference Result 224 states and 343 transitions. [2020-08-22 06:16:09,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 06:16:09,856 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 177 [2020-08-22 06:16:09,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:09,859 INFO L225 Difference]: With dead ends: 224 [2020-08-22 06:16:09,860 INFO L226 Difference]: Without dead ends: 131 [2020-08-22 06:16:09,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-08-22 06:16:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-22 06:16:09,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2020-08-22 06:16:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 06:16:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 154 transitions. [2020-08-22 06:16:09,875 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 154 transitions. Word has length 177 [2020-08-22 06:16:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:09,876 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 154 transitions. [2020-08-22 06:16:09,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 06:16:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 154 transitions. [2020-08-22 06:16:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 06:16:09,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:09,879 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:09,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 06:16:09,879 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:09,880 INFO L82 PathProgramCache]: Analyzing trace with hash 307857833, now seen corresponding path program 3 times [2020-08-22 06:16:09,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:09,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690651464] [2020-08-22 06:16:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 45 proven. 260 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-08-22 06:16:10,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690651464] [2020-08-22 06:16:10,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:10,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 06:16:10,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480957816] [2020-08-22 06:16:10,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 06:16:10,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:10,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 06:16:10,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:16:10,249 INFO L87 Difference]: Start difference. First operand 114 states and 154 transitions. Second operand 11 states. [2020-08-22 06:16:10,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:10,543 INFO L93 Difference]: Finished difference Result 244 states and 371 transitions. [2020-08-22 06:16:10,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 06:16:10,544 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2020-08-22 06:16:10,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:10,547 INFO L225 Difference]: With dead ends: 244 [2020-08-22 06:16:10,548 INFO L226 Difference]: Without dead ends: 240 [2020-08-22 06:16:10,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-08-22 06:16:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-22 06:16:10,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 220. [2020-08-22 06:16:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-22 06:16:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 331 transitions. [2020-08-22 06:16:10,567 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 331 transitions. Word has length 177 [2020-08-22 06:16:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:10,568 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 331 transitions. [2020-08-22 06:16:10,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 06:16:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 331 transitions. [2020-08-22 06:16:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-08-22 06:16:10,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:10,575 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 26, 26, 22, 21, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:10,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 06:16:10,575 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:10,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:10,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1635105538, now seen corresponding path program 4 times [2020-08-22 06:16:10,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:10,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008312932] [2020-08-22 06:16:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:10,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 06:16:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-22 06:16:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 06:16:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 201 proven. 576 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2020-08-22 06:16:11,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008312932] [2020-08-22 06:16:11,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:11,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 06:16:11,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557363573] [2020-08-22 06:16:11,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 06:16:11,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:11,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 06:16:11,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:16:11,455 INFO L87 Difference]: Start difference. First operand 220 states and 331 transitions. Second operand 11 states. [2020-08-22 06:16:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:11,710 INFO L93 Difference]: Finished difference Result 429 states and 677 transitions. [2020-08-22 06:16:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 06:16:11,711 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 380 [2020-08-22 06:16:11,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:11,716 INFO L225 Difference]: With dead ends: 429 [2020-08-22 06:16:11,717 INFO L226 Difference]: Without dead ends: 225 [2020-08-22 06:16:11,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-22 06:16:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-22 06:16:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2020-08-22 06:16:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-08-22 06:16:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 316 transitions. [2020-08-22 06:16:11,750 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 316 transitions. Word has length 380 [2020-08-22 06:16:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:11,751 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 316 transitions. [2020-08-22 06:16:11,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 06:16:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 316 transitions. [2020-08-22 06:16:11,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-22 06:16:11,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:11,758 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:11,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 06:16:11,759 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:11,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:11,759 INFO L82 PathProgramCache]: Analyzing trace with hash 657587316, now seen corresponding path program 5 times [2020-08-22 06:16:11,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:11,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662650669] [2020-08-22 06:16:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:11,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:16:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 200 proven. 324 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-08-22 06:16:12,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662650669] [2020-08-22 06:16:12,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:12,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 06:16:12,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973979816] [2020-08-22 06:16:12,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 06:16:12,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:12,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 06:16:12,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:16:12,391 INFO L87 Difference]: Start difference. First operand 222 states and 316 transitions. Second operand 14 states. [2020-08-22 06:16:12,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:12,871 INFO L93 Difference]: Finished difference Result 454 states and 689 transitions. [2020-08-22 06:16:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 06:16:12,871 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2020-08-22 06:16:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:12,875 INFO L225 Difference]: With dead ends: 454 [2020-08-22 06:16:12,876 INFO L226 Difference]: Without dead ends: 246 [2020-08-22 06:16:12,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-08-22 06:16:12,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-22 06:16:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 228. [2020-08-22 06:16:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-22 06:16:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 324 transitions. [2020-08-22 06:16:12,898 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 324 transitions. Word has length 218 [2020-08-22 06:16:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:12,898 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 324 transitions. [2020-08-22 06:16:12,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 06:16:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 324 transitions. [2020-08-22 06:16:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-08-22 06:16:12,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:12,905 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:12,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 06:16:12,905 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:12,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1614185823, now seen corresponding path program 6 times [2020-08-22 06:16:12,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:12,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257214429] [2020-08-22 06:16:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 06:16:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 94 proven. 558 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2020-08-22 06:16:13,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257214429] [2020-08-22 06:16:13,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:13,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 06:16:13,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063686964] [2020-08-22 06:16:13,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:16:13,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:13,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:16:13,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:16:13,601 INFO L87 Difference]: Start difference. First operand 228 states and 324 transitions. Second operand 12 states. [2020-08-22 06:16:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:13,957 INFO L93 Difference]: Finished difference Result 487 states and 755 transitions. [2020-08-22 06:16:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 06:16:13,958 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2020-08-22 06:16:13,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:13,965 INFO L225 Difference]: With dead ends: 487 [2020-08-22 06:16:13,966 INFO L226 Difference]: Without dead ends: 483 [2020-08-22 06:16:13,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-08-22 06:16:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-22 06:16:13,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 463. [2020-08-22 06:16:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-08-22 06:16:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 717 transitions. [2020-08-22 06:16:14,004 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 717 transitions. Word has length 286 [2020-08-22 06:16:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:14,004 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 717 transitions. [2020-08-22 06:16:14,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:16:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 717 transitions. [2020-08-22 06:16:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-08-22 06:16:14,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:14,015 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 10, 10, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:14,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 06:16:14,015 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:14,016 INFO L82 PathProgramCache]: Analyzing trace with hash 400039386, now seen corresponding path program 7 times [2020-08-22 06:16:14,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:14,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677552331] [2020-08-22 06:16:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:16:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 06:16:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 308 proven. 1032 refuted. 0 times theorem prover too weak. 4029 trivial. 0 not checked. [2020-08-22 06:16:15,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677552331] [2020-08-22 06:16:15,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:15,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 06:16:15,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580070563] [2020-08-22 06:16:15,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 06:16:15,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:15,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 06:16:15,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:16:15,438 INFO L87 Difference]: Start difference. First operand 463 states and 717 transitions. Second operand 14 states. [2020-08-22 06:16:15,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:15,928 INFO L93 Difference]: Finished difference Result 978 states and 1610 transitions. [2020-08-22 06:16:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 06:16:15,929 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 436 [2020-08-22 06:16:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:15,937 INFO L225 Difference]: With dead ends: 978 [2020-08-22 06:16:15,937 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 06:16:15,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-08-22 06:16:15,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 06:16:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 502. [2020-08-22 06:16:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-08-22 06:16:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 738 transitions. [2020-08-22 06:16:15,987 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 738 transitions. Word has length 436 [2020-08-22 06:16:15,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:15,988 INFO L479 AbstractCegarLoop]: Abstraction has 502 states and 738 transitions. [2020-08-22 06:16:15,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 06:16:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 738 transitions. [2020-08-22 06:16:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-08-22 06:16:15,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:15,995 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 40, 38, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 16, 14, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:15,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 06:16:15,996 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:15,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:15,996 INFO L82 PathProgramCache]: Analyzing trace with hash -85106141, now seen corresponding path program 8 times [2020-08-22 06:16:15,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:15,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738806780] [2020-08-22 06:16:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:16,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 06:16:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 06:16:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 06:16:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-22 06:16:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:17,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12907 backedges. 478 proven. 2018 refuted. 0 times theorem prover too weak. 10411 trivial. 0 not checked. [2020-08-22 06:16:18,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738806780] [2020-08-22 06:16:18,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:18,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 06:16:18,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781858519] [2020-08-22 06:16:18,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 06:16:18,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:18,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 06:16:18,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-08-22 06:16:18,543 INFO L87 Difference]: Start difference. First operand 502 states and 738 transitions. Second operand 16 states. [2020-08-22 06:16:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:19,215 INFO L93 Difference]: Finished difference Result 1138 states and 1852 transitions. [2020-08-22 06:16:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 06:16:19,216 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 667 [2020-08-22 06:16:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:19,226 INFO L225 Difference]: With dead ends: 1138 [2020-08-22 06:16:19,226 INFO L226 Difference]: Without dead ends: 650 [2020-08-22 06:16:19,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-08-22 06:16:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-08-22 06:16:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 570. [2020-08-22 06:16:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-08-22 06:16:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 855 transitions. [2020-08-22 06:16:19,276 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 855 transitions. Word has length 667 [2020-08-22 06:16:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:19,277 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 855 transitions. [2020-08-22 06:16:19,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 06:16:19,277 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 855 transitions. [2020-08-22 06:16:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-22 06:16:19,282 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:19,283 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 14, 12, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:19,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 06:16:19,283 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:19,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:19,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2122481566, now seen corresponding path program 9 times [2020-08-22 06:16:19,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:19,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407768925] [2020-08-22 06:16:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:19,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:19,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:19,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:19,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:19,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 06:16:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-22 06:16:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 06:16:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:20,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 913 proven. 1781 refuted. 0 times theorem prover too weak. 6719 trivial. 0 not checked. [2020-08-22 06:16:21,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407768925] [2020-08-22 06:16:21,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:21,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-22 06:16:21,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108359568] [2020-08-22 06:16:21,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 06:16:21,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:21,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 06:16:21,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-08-22 06:16:21,224 INFO L87 Difference]: Start difference. First operand 570 states and 855 transitions. Second operand 20 states. [2020-08-22 06:16:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:22,570 INFO L93 Difference]: Finished difference Result 864 states and 1434 transitions. [2020-08-22 06:16:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 06:16:22,570 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 572 [2020-08-22 06:16:22,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:22,576 INFO L225 Difference]: With dead ends: 864 [2020-08-22 06:16:22,576 INFO L226 Difference]: Without dead ends: 236 [2020-08-22 06:16:22,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=333, Invalid=2117, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 06:16:22,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-22 06:16:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 189. [2020-08-22 06:16:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-22 06:16:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 273 transitions. [2020-08-22 06:16:22,598 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 273 transitions. Word has length 572 [2020-08-22 06:16:22,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:22,599 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 273 transitions. [2020-08-22 06:16:22,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 06:16:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 273 transitions. [2020-08-22 06:16:22,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-08-22 06:16:22,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:22,602 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:22,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 06:16:22,602 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:22,603 INFO L82 PathProgramCache]: Analyzing trace with hash 634662915, now seen corresponding path program 10 times [2020-08-22 06:16:22,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:22,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39641995] [2020-08-22 06:16:22,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:16:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:22,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:16:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:22,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:22,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 06:16:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 06:16:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-22 06:16:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:16:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:16:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 06:16:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:16:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:16:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:16:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 694 proven. 802 refuted. 0 times theorem prover too weak. 2874 trivial. 0 not checked. [2020-08-22 06:16:23,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39641995] [2020-08-22 06:16:23,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:16:23,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 06:16:23,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572072813] [2020-08-22 06:16:23,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 06:16:23,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:16:23,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 06:16:23,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-08-22 06:16:23,741 INFO L87 Difference]: Start difference. First operand 189 states and 273 transitions. Second operand 18 states. [2020-08-22 06:16:24,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:16:24,588 INFO L93 Difference]: Finished difference Result 404 states and 626 transitions. [2020-08-22 06:16:24,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 06:16:24,590 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 395 [2020-08-22 06:16:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:16:24,595 INFO L225 Difference]: With dead ends: 404 [2020-08-22 06:16:24,595 INFO L226 Difference]: Without dead ends: 237 [2020-08-22 06:16:24,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 06:16:24,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-22 06:16:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 197. [2020-08-22 06:16:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-08-22 06:16:24,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 282 transitions. [2020-08-22 06:16:24,614 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 282 transitions. Word has length 395 [2020-08-22 06:16:24,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:16:24,615 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 282 transitions. [2020-08-22 06:16:24,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 06:16:24,616 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 282 transitions. [2020-08-22 06:16:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-08-22 06:16:24,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:16:24,620 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:16:24,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 06:16:24,620 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:16:24,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:16:24,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 11 times [2020-08-22 06:16:24,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:16:24,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181939703] [2020-08-22 06:16:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:16:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:16:24,790 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:16:24,792 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:16:24,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 06:16:24,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:16:24 BoogieIcfgContainer [2020-08-22 06:16:24,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:16:24,908 INFO L168 Benchmark]: Toolchain (without parser) took 22974.20 ms. Allocated memory was 141.0 MB in the beginning and 993.0 MB in the end (delta: 852.0 MB). Free memory was 104.4 MB in the beginning and 948.5 MB in the end (delta: -844.1 MB). Peak memory consumption was 867.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:16:24,909 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 06:16:24,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.09 ms. Allocated memory is still 141.0 MB. Free memory was 104.2 MB in the beginning and 94.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:16:24,910 INFO L168 Benchmark]: Boogie Preprocessor took 103.32 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 94.5 MB in the beginning and 181.3 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:16:24,911 INFO L168 Benchmark]: RCFGBuilder took 280.91 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 167.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:16:24,911 INFO L168 Benchmark]: TraceAbstraction took 22314.94 ms. Allocated memory was 202.9 MB in the beginning and 993.0 MB in the end (delta: 790.1 MB). Free memory was 167.2 MB in the beginning and 948.5 MB in the end (delta: -781.3 MB). Peak memory consumption was 868.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:16:24,918 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.09 ms. Allocated memory is still 141.0 MB. Free memory was 104.2 MB in the beginning and 94.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.32 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 94.5 MB in the beginning and 181.3 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 280.91 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 167.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22314.94 ms. Allocated memory was 202.9 MB in the beginning and 993.0 MB in the end (delta: 790.1 MB). Free memory was 167.2 MB in the beginning and 948.5 MB in the end (delta: -781.3 MB). Peak memory consumption was 868.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 8; [L37] CALL, EXPR fibo1(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) [L37] int result = fibo1(x); [L38] COND TRUE result == 21 [L39] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.0s, OverallIterations: 23, TraceHistogramMax: 49, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 719 SDtfs, 917 SDslu, 4168 SDs, 0 SdLazy, 6043 SolverSat, 752 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1638 GetRequests, 1271 SyntacticMatches, 0 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1610 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 329 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 4600 NumberOfCodeBlocks, 4600 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 4115 ConstructedInterpolants, 0 QuantifiedInterpolants, 2046601 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 34894/43122 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...