/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -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 0.1.25-5644d1e-m [2020-08-18 18:40:45,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:40:45,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:40:45,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:40:45,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:40:45,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:40:45,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:40:45,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:40:45,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:40:45,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:40:45,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:40:45,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:40:45,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:40:45,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:40:45,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:40:45,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:40:45,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:40:45,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:40:45,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:40:45,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:40:45,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:40:45,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:40:45,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:40:45,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:40:45,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 18:40:45,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:40:45,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:40:45,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:40:45,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:40:45,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:40:45,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:40:45,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:40:45,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:40:45,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:40:45,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:40:45,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:40:45,835 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 [2020-08-18 18:40:45,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:40:45,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:40:45,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:40:45,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:40:45,884 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:40:45,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:40:45,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:40:45,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:40:45,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:40:45,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:40:45,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:40:45,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:40:45,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:40:45,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:40:45,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:40:45,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:40:45,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:40:45,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:40:45,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:40:45,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:40:45,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:40:45,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:40:45,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:40:45,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:40:45,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:40:45,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:40:45,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:40:45,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:40:45,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:40:45,892 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=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:40:46,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:40:46,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:40:46,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:40:46,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:40:46,276 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:40:46,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-08-18 18:40:46,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90d5fd297/c13f7f69a30f470ea45d1e7280138476/FLAG2b2356f84 [2020-08-18 18:40:46,812 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:40:46,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-08-18 18:40:46,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90d5fd297/c13f7f69a30f470ea45d1e7280138476/FLAG2b2356f84 [2020-08-18 18:40:47,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90d5fd297/c13f7f69a30f470ea45d1e7280138476 [2020-08-18 18:40:47,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:40:47,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:40:47,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:40:47,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:40:47,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:40:47,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:40:47" (1/1) ... [2020-08-18 18:40:47,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66948a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47, skipping insertion in model container [2020-08-18 18:40:47,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:40:47" (1/1) ... [2020-08-18 18:40:47,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:40:47,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:40:47,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:40:47,405 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:40:47,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:40:47,432 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:40:47,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47 WrapperNode [2020-08-18 18:40:47,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:40:47,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:40:47,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:40:47,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:40:47,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47" (1/1) ... [2020-08-18 18:40:47,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47" (1/1) ... [2020-08-18 18:40:47,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47" (1/1) ... [2020-08-18 18:40:47,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47" (1/1) ... [2020-08-18 18:40:47,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47" (1/1) ... [2020-08-18 18:40:47,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47" (1/1) ... [2020-08-18 18:40:47,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47" (1/1) ... [2020-08-18 18:40:47,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:40:47,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:40:47,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:40:47,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:40:47,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47" (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 [2020-08-18 18:40:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:40:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:40:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-18 18:40:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-18 18:40:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:40:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:40:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:40:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-18 18:40:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-18 18:40:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:40:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:40:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:40:47,818 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:40:47,818 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 18:40:47,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:40:47 BoogieIcfgContainer [2020-08-18 18:40:47,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:40:47,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:40:47,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:40:47,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:40:47,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:40:47" (1/3) ... [2020-08-18 18:40:47,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d0c0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:40:47, skipping insertion in model container [2020-08-18 18:40:47,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:40:47" (2/3) ... [2020-08-18 18:40:47,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d0c0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:40:47, skipping insertion in model container [2020-08-18 18:40:47,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:40:47" (3/3) ... [2020-08-18 18:40:47,841 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-08-18 18:40:47,855 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:40:47,866 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:40:47,884 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:40:47,931 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:40:47,931 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:40:47,931 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:40:47,931 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:40:47,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:40:47,932 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:40:47,932 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:40:47,932 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:40:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-18 18:40:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 18:40:47,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:47,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:40:47,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:47,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:47,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-08-18 18:40:47,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:47,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189187092] [2020-08-18 18:40:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:40:48,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189187092] [2020-08-18 18:40:48,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:40:48,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:40:48,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819082471] [2020-08-18 18:40:48,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:40:48,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:48,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:40:48,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:40:48,269 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-08-18 18:40:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:48,392 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-18 18:40:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:40:48,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-18 18:40:48,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:48,406 INFO L225 Difference]: With dead ends: 44 [2020-08-18 18:40:48,407 INFO L226 Difference]: Without dead ends: 30 [2020-08-18 18:40:48,411 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 [2020-08-18 18:40:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-18 18:40:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-18 18:40:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 18:40:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-18 18:40:48,460 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-08-18 18:40:48,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:48,460 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-18 18:40:48,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:40:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-18 18:40:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 18:40:48,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:48,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:40:48,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:40:48,464 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:48,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-08-18 18:40:48,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:48,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718479199] [2020-08-18 18:40:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:40:48,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718479199] [2020-08-18 18:40:48,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:40:48,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:40:48,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441478332] [2020-08-18 18:40:48,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:40:48,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:48,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:40:48,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:40:48,542 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-08-18 18:40:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:48,611 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-08-18 18:40:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:40:48,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 18:40:48,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:48,614 INFO L225 Difference]: With dead ends: 36 [2020-08-18 18:40:48,615 INFO L226 Difference]: Without dead ends: 32 [2020-08-18 18:40:48,616 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 [2020-08-18 18:40:48,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-18 18:40:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-18 18:40:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 18:40:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-18 18:40:48,626 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-08-18 18:40:48,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:48,627 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-18 18:40:48,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:40:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-18 18:40:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 18:40:48,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:48,632 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] [2020-08-18 18:40:48,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:40:48,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:48,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:48,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-08-18 18:40:48,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:48,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768576235] [2020-08-18 18:40:48,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:40:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:40:48,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768576235] [2020-08-18 18:40:48,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:48,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 18:40:48,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957106858] [2020-08-18 18:40:48,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:40:48,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:48,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:40:48,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:40:48,793 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-08-18 18:40:48,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:48,883 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-08-18 18:40:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:40:48,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-18 18:40:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:48,885 INFO L225 Difference]: With dead ends: 58 [2020-08-18 18:40:48,885 INFO L226 Difference]: Without dead ends: 34 [2020-08-18 18:40:48,887 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 [2020-08-18 18:40:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-18 18:40:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-18 18:40:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 18:40:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-08-18 18:40:48,900 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-08-18 18:40:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:48,900 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-08-18 18:40:48,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:40:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-08-18 18:40:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 18:40:48,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:48,903 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] [2020-08-18 18:40:48,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:40:48,904 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:48,905 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-08-18 18:40:48,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:48,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408896466] [2020-08-18 18:40:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:40:49,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408896466] [2020-08-18 18:40:49,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:49,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 18:40:49,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517350854] [2020-08-18 18:40:49,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:40:49,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:49,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:40:49,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:40:49,020 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-08-18 18:40:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:49,213 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-08-18 18:40:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:40:49,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-18 18:40:49,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:49,218 INFO L225 Difference]: With dead ends: 54 [2020-08-18 18:40:49,218 INFO L226 Difference]: Without dead ends: 50 [2020-08-18 18:40:49,219 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 [2020-08-18 18:40:49,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-18 18:40:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-08-18 18:40:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-18 18:40:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-08-18 18:40:49,233 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-08-18 18:40:49,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:49,234 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-08-18 18:40:49,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:40:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-08-18 18:40:49,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-18 18:40:49,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:49,236 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] [2020-08-18 18:40:49,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:40:49,237 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:49,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:49,238 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-08-18 18:40:49,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:49,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797513622] [2020-08-18 18:40:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:40:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:40:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 18:40:49,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797513622] [2020-08-18 18:40:49,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:49,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 18:40:49,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998997215] [2020-08-18 18:40:49,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:40:49,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:49,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:40:49,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:40:49,366 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2020-08-18 18:40:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:49,470 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2020-08-18 18:40:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:40:49,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-08-18 18:40:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:49,474 INFO L225 Difference]: With dead ends: 94 [2020-08-18 18:40:49,474 INFO L226 Difference]: Without dead ends: 52 [2020-08-18 18:40:49,476 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 [2020-08-18 18:40:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-18 18:40:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-08-18 18:40:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-18 18:40:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2020-08-18 18:40:49,490 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 39 [2020-08-18 18:40:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:49,491 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-08-18 18:40:49,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:40:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2020-08-18 18:40:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 18:40:49,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:49,494 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] [2020-08-18 18:40:49,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:40:49,494 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:49,495 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-08-18 18:40:49,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:49,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735590938] [2020-08-18 18:40:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 18:40:49,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735590938] [2020-08-18 18:40:49,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:49,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 18:40:49,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463058679] [2020-08-18 18:40:49,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:40:49,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:49,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:40:49,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:40:49,631 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand 8 states. [2020-08-18 18:40:49,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:49,740 INFO L93 Difference]: Finished difference Result 103 states and 158 transitions. [2020-08-18 18:40:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:40:49,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-18 18:40:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:49,749 INFO L225 Difference]: With dead ends: 103 [2020-08-18 18:40:49,749 INFO L226 Difference]: Without dead ends: 57 [2020-08-18 18:40:49,751 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 [2020-08-18 18:40:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-18 18:40:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-08-18 18:40:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-18 18:40:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2020-08-18 18:40:49,779 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 40 [2020-08-18 18:40:49,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:49,779 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2020-08-18 18:40:49,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:40:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2020-08-18 18:40:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-18 18:40:49,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:49,788 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] [2020-08-18 18:40:49,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:40:49,793 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:49,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:49,793 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times [2020-08-18 18:40:49,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:49,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183500180] [2020-08-18 18:40:49,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 18:40:50,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183500180] [2020-08-18 18:40:50,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:50,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 18:40:50,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726150875] [2020-08-18 18:40:50,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:40:50,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:50,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:40:50,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:40:50,030 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 8 states. [2020-08-18 18:40:50,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:50,257 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-08-18 18:40:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:40:50,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-08-18 18:40:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:50,260 INFO L225 Difference]: With dead ends: 86 [2020-08-18 18:40:50,260 INFO L226 Difference]: Without dead ends: 82 [2020-08-18 18:40:50,261 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 [2020-08-18 18:40:50,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-18 18:40:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-18 18:40:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-18 18:40:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions. [2020-08-18 18:40:50,279 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 41 [2020-08-18 18:40:50,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:50,280 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions. [2020-08-18 18:40:50,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:40:50,280 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-08-18 18:40:50,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 18:40:50,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:50,283 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] [2020-08-18 18:40:50,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:40:50,284 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:50,287 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-08-18 18:40:50,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:50,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262580762] [2020-08-18 18:40:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:40:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-18 18:40:50,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262580762] [2020-08-18 18:40:50,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:50,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 18:40:50,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813406295] [2020-08-18 18:40:50,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:40:50,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:50,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:40:50,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:40:50,512 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand 8 states. [2020-08-18 18:40:50,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:50,635 INFO L93 Difference]: Finished difference Result 167 states and 288 transitions. [2020-08-18 18:40:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:40:50,636 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-18 18:40:50,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:50,638 INFO L225 Difference]: With dead ends: 167 [2020-08-18 18:40:50,638 INFO L226 Difference]: Without dead ends: 94 [2020-08-18 18:40:50,640 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 [2020-08-18 18:40:50,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-18 18:40:50,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-08-18 18:40:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-18 18:40:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2020-08-18 18:40:50,658 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 54 [2020-08-18 18:40:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:50,659 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2020-08-18 18:40:50,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:40:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2020-08-18 18:40:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-18 18:40:50,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:50,663 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] [2020-08-18 18:40:50,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:40:50,664 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:50,665 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2020-08-18 18:40:50,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:50,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036063771] [2020-08-18 18:40:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 18:40:50,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036063771] [2020-08-18 18:40:50,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:50,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 18:40:50,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339796084] [2020-08-18 18:40:50,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:40:50,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:50,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:40:50,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:40:50,815 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 10 states. [2020-08-18 18:40:51,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:51,067 INFO L93 Difference]: Finished difference Result 188 states and 331 transitions. [2020-08-18 18:40:51,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 18:40:51,068 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-08-18 18:40:51,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:51,070 INFO L225 Difference]: With dead ends: 188 [2020-08-18 18:40:51,070 INFO L226 Difference]: Without dead ends: 109 [2020-08-18 18:40:51,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:40:51,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-18 18:40:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-08-18 18:40:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 18:40:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2020-08-18 18:40:51,090 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 55 [2020-08-18 18:40:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:51,091 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2020-08-18 18:40:51,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:40:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2020-08-18 18:40:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 18:40:51,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:51,094 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] [2020-08-18 18:40:51,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:40:51,094 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:51,095 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 2 times [2020-08-18 18:40:51,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:51,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872450861] [2020-08-18 18:40:51,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-18 18:40:51,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872450861] [2020-08-18 18:40:51,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:51,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 18:40:51,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819198663] [2020-08-18 18:40:51,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:40:51,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:51,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:40:51,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:40:51,357 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand 12 states. [2020-08-18 18:40:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:51,793 INFO L93 Difference]: Finished difference Result 199 states and 354 transitions. [2020-08-18 18:40:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 18:40:51,794 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-08-18 18:40:51,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:51,796 INFO L225 Difference]: With dead ends: 199 [2020-08-18 18:40:51,796 INFO L226 Difference]: Without dead ends: 86 [2020-08-18 18:40:51,800 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 [2020-08-18 18:40:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-18 18:40:51,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2020-08-18 18:40:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-18 18:40:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2020-08-18 18:40:51,816 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 82 [2020-08-18 18:40:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:51,816 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2020-08-18 18:40:51,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:40:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2020-08-18 18:40:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-18 18:40:51,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:51,819 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] [2020-08-18 18:40:51,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:40:51,819 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:51,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2119203654, now seen corresponding path program 2 times [2020-08-18 18:40:51,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:51,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189671174] [2020-08-18 18:40:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 18:40:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-08-18 18:40:52,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189671174] [2020-08-18 18:40:52,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:52,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 18:40:52,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954268442] [2020-08-18 18:40:52,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:40:52,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:52,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:40:52,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:40:52,096 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand 10 states. [2020-08-18 18:40:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:52,285 INFO L93 Difference]: Finished difference Result 142 states and 204 transitions. [2020-08-18 18:40:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:40:52,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-08-18 18:40:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:52,287 INFO L225 Difference]: With dead ends: 142 [2020-08-18 18:40:52,287 INFO L226 Difference]: Without dead ends: 78 [2020-08-18 18:40:52,288 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 [2020-08-18 18:40:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-18 18:40:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-18 18:40:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 18:40:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-08-18 18:40:52,297 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 110 [2020-08-18 18:40:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:52,297 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-08-18 18:40:52,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:40:52,298 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-08-18 18:40:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-18 18:40:52,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:52,299 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] [2020-08-18 18:40:52,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:40:52,300 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:52,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1263382818, now seen corresponding path program 3 times [2020-08-18 18:40:52,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:52,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277813843] [2020-08-18 18:40:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 18:40:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 18:40:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 18:40:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 133 proven. 373 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-08-18 18:40:52,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277813843] [2020-08-18 18:40:52,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:52,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 18:40:52,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038436182] [2020-08-18 18:40:52,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 18:40:52,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:52,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 18:40:52,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:40:52,772 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 15 states. [2020-08-18 18:40:53,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:53,405 INFO L93 Difference]: Finished difference Result 184 states and 282 transitions. [2020-08-18 18:40:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 18:40:53,406 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 192 [2020-08-18 18:40:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:53,408 INFO L225 Difference]: With dead ends: 184 [2020-08-18 18:40:53,408 INFO L226 Difference]: Without dead ends: 111 [2020-08-18 18:40:53,410 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 [2020-08-18 18:40:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-18 18:40:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-08-18 18:40:53,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-18 18:40:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions. [2020-08-18 18:40:53,420 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 192 [2020-08-18 18:40:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:53,421 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions. [2020-08-18 18:40:53,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 18:40:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions. [2020-08-18 18:40:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 18:40:53,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:53,423 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] [2020-08-18 18:40:53,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:40:53,423 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:53,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:53,424 INFO L82 PathProgramCache]: Analyzing trace with hash -2102107778, now seen corresponding path program 1 times [2020-08-18 18:40:53,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:53,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817666590] [2020-08-18 18:40:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:40:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,660 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 109 proven. 85 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-08-18 18:40:53,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817666590] [2020-08-18 18:40:53,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:53,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 18:40:53,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037149302] [2020-08-18 18:40:53,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:40:53,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:53,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:40:53,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:40:53,663 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand 11 states. [2020-08-18 18:40:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:53,917 INFO L93 Difference]: Finished difference Result 188 states and 266 transitions. [2020-08-18 18:40:53,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:40:53,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-18 18:40:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:53,920 INFO L225 Difference]: With dead ends: 188 [2020-08-18 18:40:53,920 INFO L226 Difference]: Without dead ends: 101 [2020-08-18 18:40:53,921 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 [2020-08-18 18:40:53,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-18 18:40:53,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2020-08-18 18:40:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 18:40:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-08-18 18:40:53,931 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 136 [2020-08-18 18:40:53,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:53,932 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-08-18 18:40:53,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:40:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-08-18 18:40:53,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-18 18:40:53,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:53,951 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] [2020-08-18 18:40:53,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 18:40:53,951 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:53,951 INFO L82 PathProgramCache]: Analyzing trace with hash 677703633, now seen corresponding path program 2 times [2020-08-18 18:40:53,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:53,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524104075] [2020-08-18 18:40:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:53,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 18:40:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 138 proven. 250 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2020-08-18 18:40:54,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524104075] [2020-08-18 18:40:54,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:54,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 18:40:54,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912083291] [2020-08-18 18:40:54,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 18:40:54,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:54,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 18:40:54,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:40:54,315 INFO L87 Difference]: Start difference. First operand 98 states and 130 transitions. Second operand 14 states. [2020-08-18 18:40:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:54,879 INFO L93 Difference]: Finished difference Result 224 states and 343 transitions. [2020-08-18 18:40:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 18:40:54,880 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 177 [2020-08-18 18:40:54,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:54,882 INFO L225 Difference]: With dead ends: 224 [2020-08-18 18:40:54,883 INFO L226 Difference]: Without dead ends: 131 [2020-08-18 18:40:54,886 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 [2020-08-18 18:40:54,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-18 18:40:54,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2020-08-18 18:40:54,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 18:40:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 154 transitions. [2020-08-18 18:40:54,897 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 154 transitions. Word has length 177 [2020-08-18 18:40:54,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:54,898 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 154 transitions. [2020-08-18 18:40:54,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 18:40:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 154 transitions. [2020-08-18 18:40:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-18 18:40:54,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:54,900 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] [2020-08-18 18:40:54,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 18:40:54,901 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:54,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:54,901 INFO L82 PathProgramCache]: Analyzing trace with hash 307857833, now seen corresponding path program 3 times [2020-08-18 18:40:54,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:54,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732539510] [2020-08-18 18:40:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:54,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:40:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 45 proven. 260 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-08-18 18:40:55,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732539510] [2020-08-18 18:40:55,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:55,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 18:40:55,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873191605] [2020-08-18 18:40:55,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:40:55,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:55,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:40:55,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:40:55,217 INFO L87 Difference]: Start difference. First operand 114 states and 154 transitions. Second operand 11 states. [2020-08-18 18:40:55,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:55,504 INFO L93 Difference]: Finished difference Result 244 states and 371 transitions. [2020-08-18 18:40:55,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:40:55,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2020-08-18 18:40:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:55,509 INFO L225 Difference]: With dead ends: 244 [2020-08-18 18:40:55,509 INFO L226 Difference]: Without dead ends: 240 [2020-08-18 18:40:55,511 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 [2020-08-18 18:40:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-18 18:40:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 220. [2020-08-18 18:40:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-18 18:40:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 331 transitions. [2020-08-18 18:40:55,538 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 331 transitions. Word has length 177 [2020-08-18 18:40:55,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:55,538 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 331 transitions. [2020-08-18 18:40:55,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:40:55,538 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 331 transitions. [2020-08-18 18:40:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-08-18 18:40:55,542 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:55,542 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 18, 18, 17, 16, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:40:55,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 18:40:55,543 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:55,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1318955698, now seen corresponding path program 4 times [2020-08-18 18:40:55,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:55,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109569126] [2020-08-18 18:40:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 18:40:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 18:40:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 18:40:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:55,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2032 backedges. 167 proven. 362 refuted. 0 times theorem prover too weak. 1503 trivial. 0 not checked. [2020-08-18 18:40:56,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109569126] [2020-08-18 18:40:56,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:56,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 18:40:56,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958066151] [2020-08-18 18:40:56,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:40:56,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:56,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:40:56,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:40:56,075 INFO L87 Difference]: Start difference. First operand 220 states and 331 transitions. Second operand 11 states. [2020-08-18 18:40:56,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:56,417 INFO L93 Difference]: Finished difference Result 429 states and 677 transitions. [2020-08-18 18:40:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 18:40:56,417 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 274 [2020-08-18 18:40:56,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:56,421 INFO L225 Difference]: With dead ends: 429 [2020-08-18 18:40:56,421 INFO L226 Difference]: Without dead ends: 225 [2020-08-18 18:40:56,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-18 18:40:56,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-18 18:40:56,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2020-08-18 18:40:56,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-08-18 18:40:56,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 316 transitions. [2020-08-18 18:40:56,458 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 316 transitions. Word has length 274 [2020-08-18 18:40:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:56,459 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 316 transitions. [2020-08-18 18:40:56,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:40:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 316 transitions. [2020-08-18 18:40:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-08-18 18:40:56,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:56,469 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] [2020-08-18 18:40:56,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 18:40:56,470 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:56,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1614185823, now seen corresponding path program 5 times [2020-08-18 18:40:56,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:56,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869429942] [2020-08-18 18:40:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:40:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:56,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 18:40:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 94 proven. 558 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2020-08-18 18:40:57,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869429942] [2020-08-18 18:40:57,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:57,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 18:40:57,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613209642] [2020-08-18 18:40:57,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:40:57,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:57,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:40:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:40:57,197 INFO L87 Difference]: Start difference. First operand 222 states and 316 transitions. Second operand 12 states. [2020-08-18 18:40:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:57,520 INFO L93 Difference]: Finished difference Result 469 states and 720 transitions. [2020-08-18 18:40:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 18:40:57,521 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2020-08-18 18:40:57,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:57,528 INFO L225 Difference]: With dead ends: 469 [2020-08-18 18:40:57,529 INFO L226 Difference]: Without dead ends: 465 [2020-08-18 18:40:57,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-08-18 18:40:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-08-18 18:40:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 445. [2020-08-18 18:40:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-08-18 18:40:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 682 transitions. [2020-08-18 18:40:57,568 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 682 transitions. Word has length 286 [2020-08-18 18:40:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:57,569 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 682 transitions. [2020-08-18 18:40:57,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:40:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 682 transitions. [2020-08-18 18:40:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-08-18 18:40:57,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:57,576 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 22, 21, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:40:57,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 18:40:57,577 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:57,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:57,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1485391483, now seen corresponding path program 6 times [2020-08-18 18:40:57,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:57,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876117574] [2020-08-18 18:40:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:57,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:40:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 18:40:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-18 18:40:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3769 backedges. 297 proven. 795 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2020-08-18 18:40:58,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876117574] [2020-08-18 18:40:58,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:40:58,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 18:40:58,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894075382] [2020-08-18 18:40:58,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 18:40:58,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:40:58,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 18:40:58,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:40:58,496 INFO L87 Difference]: Start difference. First operand 445 states and 682 transitions. Second operand 14 states. [2020-08-18 18:40:59,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:40:59,068 INFO L93 Difference]: Finished difference Result 924 states and 1512 transitions. [2020-08-18 18:40:59,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 18:40:59,069 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 368 [2020-08-18 18:40:59,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:40:59,085 INFO L225 Difference]: With dead ends: 924 [2020-08-18 18:40:59,085 INFO L226 Difference]: Without dead ends: 493 [2020-08-18 18:40:59,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-08-18 18:40:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-08-18 18:40:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 439. [2020-08-18 18:40:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-08-18 18:40:59,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 658 transitions. [2020-08-18 18:40:59,157 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 658 transitions. Word has length 368 [2020-08-18 18:40:59,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:40:59,159 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 658 transitions. [2020-08-18 18:40:59,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 18:40:59,159 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 658 transitions. [2020-08-18 18:40:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-08-18 18:40:59,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:40:59,181 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, 11, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:40:59,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 18:40:59,181 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:40:59,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:40:59,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1740376526, now seen corresponding path program 7 times [2020-08-18 18:40:59,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:40:59,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106687792] [2020-08-18 18:40:59,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:40:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:40:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:40:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:40:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:40:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:40:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:40:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:40:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:40:59,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:40:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 18:41:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-18 18:41:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:41:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 1102 proven. 902 refuted. 0 times theorem prover too weak. 3365 trivial. 0 not checked. [2020-08-18 18:41:00,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106687792] [2020-08-18 18:41:00,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:41:00,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-18 18:41:00,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040224236] [2020-08-18 18:41:00,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-18 18:41:00,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:41:00,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-18 18:41:00,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-08-18 18:41:00,958 INFO L87 Difference]: Start difference. First operand 439 states and 658 transitions. Second operand 22 states. [2020-08-18 18:41:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:41:01,965 INFO L93 Difference]: Finished difference Result 1181 states and 2195 transitions. [2020-08-18 18:41:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-18 18:41:01,966 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 436 [2020-08-18 18:41:01,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:41:01,978 INFO L225 Difference]: With dead ends: 1181 [2020-08-18 18:41:01,979 INFO L226 Difference]: Without dead ends: 756 [2020-08-18 18:41:01,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=1408, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 18:41:01,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-08-18 18:41:02,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 676. [2020-08-18 18:41:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2020-08-18 18:41:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1086 transitions. [2020-08-18 18:41:02,041 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1086 transitions. Word has length 436 [2020-08-18 18:41:02,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:41:02,042 INFO L479 AbstractCegarLoop]: Abstraction has 676 states and 1086 transitions. [2020-08-18 18:41:02,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-18 18:41:02,042 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1086 transitions. [2020-08-18 18:41:02,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-18 18:41:02,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:41:02,056 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] [2020-08-18 18:41:02,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 18:41:02,056 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:41:02,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:41:02,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2122481566, now seen corresponding path program 8 times [2020-08-18 18:41:02,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:41:02,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219525176] [2020-08-18 18:41:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:41:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:41:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:41:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:41:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:02,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 18:41:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-18 18:41:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:41:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 18:41:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:03,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 913 proven. 1781 refuted. 0 times theorem prover too weak. 6719 trivial. 0 not checked. [2020-08-18 18:41:04,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219525176] [2020-08-18 18:41:04,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:41:04,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-18 18:41:04,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932125836] [2020-08-18 18:41:04,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-18 18:41:04,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:41:04,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-18 18:41:04,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-08-18 18:41:04,362 INFO L87 Difference]: Start difference. First operand 676 states and 1086 transitions. Second operand 20 states. [2020-08-18 18:41:05,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:41:05,746 INFO L93 Difference]: Finished difference Result 1002 states and 1742 transitions. [2020-08-18 18:41:05,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 18:41:05,747 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 572 [2020-08-18 18:41:05,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:41:05,752 INFO L225 Difference]: With dead ends: 1002 [2020-08-18 18:41:05,753 INFO L226 Difference]: Without dead ends: 264 [2020-08-18 18:41:05,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=333, Invalid=2117, Unknown=0, NotChecked=0, Total=2450 [2020-08-18 18:41:05,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-18 18:41:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 209. [2020-08-18 18:41:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-18 18:41:05,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 315 transitions. [2020-08-18 18:41:05,781 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 315 transitions. Word has length 572 [2020-08-18 18:41:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:41:05,783 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 315 transitions. [2020-08-18 18:41:05,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-18 18:41:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 315 transitions. [2020-08-18 18:41:05,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-08-18 18:41:05,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:41:05,796 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 35, 35, 30, 29, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 13, 10, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:41:05,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 18:41:05,797 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:41:05,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:41:05,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1638954211, now seen corresponding path program 9 times [2020-08-18 18:41:05,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:41:05,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137022004] [2020-08-18 18:41:05,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:41:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:41:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:41:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:41:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 18:41:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-18 18:41:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:41:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 1340 proven. 1409 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2020-08-18 18:41:07,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137022004] [2020-08-18 18:41:07,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:41:07,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-18 18:41:07,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119820671] [2020-08-18 18:41:07,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-18 18:41:07,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:41:07,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-18 18:41:07,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-08-18 18:41:07,554 INFO L87 Difference]: Start difference. First operand 209 states and 315 transitions. Second operand 24 states. [2020-08-18 18:41:08,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:41:08,939 INFO L93 Difference]: Finished difference Result 481 states and 829 transitions. [2020-08-18 18:41:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-18 18:41:08,939 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 504 [2020-08-18 18:41:08,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:41:08,942 INFO L225 Difference]: With dead ends: 481 [2020-08-18 18:41:08,942 INFO L226 Difference]: Without dead ends: 285 [2020-08-18 18:41:08,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=505, Invalid=3035, Unknown=0, NotChecked=0, Total=3540 [2020-08-18 18:41:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-18 18:41:08,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 241. [2020-08-18 18:41:08,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-18 18:41:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 370 transitions. [2020-08-18 18:41:08,963 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 370 transitions. Word has length 504 [2020-08-18 18:41:08,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:41:08,964 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 370 transitions. [2020-08-18 18:41:08,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-18 18:41:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 370 transitions. [2020-08-18 18:41:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-08-18 18:41:08,968 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:41:08,968 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] [2020-08-18 18:41:08,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 18:41:08,968 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:41:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:41:08,969 INFO L82 PathProgramCache]: Analyzing trace with hash 634662915, now seen corresponding path program 10 times [2020-08-18 18:41:08,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:41:08,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020579107] [2020-08-18 18:41:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:41:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:41:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 18:41:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:41:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 18:41:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-18 18:41:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:41:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:41:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 18:41:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:41:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 18:41:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:41:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 694 proven. 802 refuted. 0 times theorem prover too weak. 2874 trivial. 0 not checked. [2020-08-18 18:41:10,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020579107] [2020-08-18 18:41:10,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:41:10,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 18:41:10,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591597719] [2020-08-18 18:41:10,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 18:41:10,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:41:10,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 18:41:10,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:41:10,040 INFO L87 Difference]: Start difference. First operand 241 states and 370 transitions. Second operand 18 states. [2020-08-18 18:41:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:41:10,842 INFO L93 Difference]: Finished difference Result 486 states and 760 transitions. [2020-08-18 18:41:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-18 18:41:10,845 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 395 [2020-08-18 18:41:10,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:41:10,850 INFO L225 Difference]: With dead ends: 486 [2020-08-18 18:41:10,850 INFO L226 Difference]: Without dead ends: 259 [2020-08-18 18:41:10,854 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 [2020-08-18 18:41:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-18 18:41:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 241. [2020-08-18 18:41:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-18 18:41:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 357 transitions. [2020-08-18 18:41:10,879 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 357 transitions. Word has length 395 [2020-08-18 18:41:10,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:41:10,879 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 357 transitions. [2020-08-18 18:41:10,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 18:41:10,880 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 357 transitions. [2020-08-18 18:41:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-08-18 18:41:10,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:41:10,884 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] [2020-08-18 18:41:10,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 18:41:10,885 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:41:10,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:41:10,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 11 times [2020-08-18 18:41:10,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:41:10,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600231290] [2020-08-18 18:41:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:41:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:41:11,025 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:41:11,026 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:41:11,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 18:41:11,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:41:11 BoogieIcfgContainer [2020-08-18 18:41:11,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:41:11,124 INFO L168 Benchmark]: Toolchain (without parser) took 23929.98 ms. Allocated memory was 140.0 MB in the beginning and 850.4 MB in the end (delta: 710.4 MB). Free memory was 102.9 MB in the beginning and 762.6 MB in the end (delta: -659.7 MB). Peak memory consumption was 727.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:41:11,124 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:41:11,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.73 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-18 18:41:11,126 INFO L168 Benchmark]: Boogie Preprocessor took 115.27 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 93.0 MB in the beginning and 180.0 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-18 18:41:11,126 INFO L168 Benchmark]: RCFGBuilder took 274.53 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 166.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:41:11,127 INFO L168 Benchmark]: TraceAbstraction took 23291.68 ms. Allocated memory was 201.3 MB in the beginning and 850.4 MB in the end (delta: 649.1 MB). Free memory was 166.0 MB in the beginning and 762.6 MB in the end (delta: -596.6 MB). Peak memory consumption was 729.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:41:11,134 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.73 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.27 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 93.0 MB in the beginning and 180.0 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.53 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 166.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23291.68 ms. Allocated memory was 201.3 MB in the beginning and 850.4 MB in the end (delta: 649.1 MB). Free memory was 166.0 MB in the beginning and 762.6 MB in the end (delta: -596.6 MB). Peak memory consumption was 729.2 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: 23.1s, OverallIterations: 23, TraceHistogramMax: 42, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 741 SDtfs, 1101 SDslu, 4470 SDs, 0 SdLazy, 6690 SolverSat, 927 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1648 GetRequests, 1235 SyntacticMatches, 0 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2740 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=676occurred in iteration=19, 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, 368 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 4481 NumberOfCodeBlocks, 4481 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 3996 ConstructedInterpolants, 0 QuantifiedInterpolants, 1960412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 30250/37996 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...