/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:35:41,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:35:41,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:35:41,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:35:41,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:35:41,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:35:41,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:35:41,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:35:41,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:35:41,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:35:41,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:35:41,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:35:41,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:35:41,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:35:41,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:35:41,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:35:41,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:35:41,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:35:41,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:35:41,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:35:41,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:35:41,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:35:41,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:35:41,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:35:41,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:35:41,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:35:41,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:35:41,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:35:41,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:35:41,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 00:35:41,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:35:41,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:35:41,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:35:41,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 00:35:41,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:35:41,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:35:41,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:35:41,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:35:41,624 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:35:41,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:35:41,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:35:41,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:35:41,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:35:41,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:35:41,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:35:41,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:35:41,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:35:41,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:35:41,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:35:41,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:35:41,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:35:41,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:35:41,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:35:41,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:35:41,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:35:41,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:35:41,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:35:41,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:35:41,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:35:41,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:35:41,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:35:41,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:35:41,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:35:41,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:35:41,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:35:41,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:35:41,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:35:41,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:35:41,991 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:35:41,992 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2020-08-22 00:35:42,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4f433e4/6fd82f5ac8034bb6a68ca7a8ecd8331b/FLAG6c01a9e7f [2020-08-22 00:35:42,530 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:35:42,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2020-08-22 00:35:42,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4f433e4/6fd82f5ac8034bb6a68ca7a8ecd8331b/FLAG6c01a9e7f [2020-08-22 00:35:42,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4f433e4/6fd82f5ac8034bb6a68ca7a8ecd8331b [2020-08-22 00:35:42,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:35:42,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:35:42,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:35:42,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:35:42,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:35:42,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:35:42" (1/1) ... [2020-08-22 00:35:42,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33932146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:42, skipping insertion in model container [2020-08-22 00:35:42,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:35:42" (1/1) ... [2020-08-22 00:35:42,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:35:42,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:35:43,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:35:43,094 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:35:43,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:35:43,121 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:35:43,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:43 WrapperNode [2020-08-22 00:35:43,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:35:43,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:35:43,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:35:43,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:35:43,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:43" (1/1) ... [2020-08-22 00:35:43,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:43" (1/1) ... [2020-08-22 00:35:43,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:43" (1/1) ... [2020-08-22 00:35:43,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:43" (1/1) ... [2020-08-22 00:35:43,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:43" (1/1) ... [2020-08-22 00:35:43,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:43" (1/1) ... [2020-08-22 00:35:43,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:43" (1/1) ... [2020-08-22 00:35:43,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:35:43,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:35:43,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:35:43,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:35:43,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:35:43,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:35:43,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:35:43,288 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-22 00:35:43,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:35:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:35:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:35:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-22 00:35:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:35:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:35:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:35:43,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:35:43,451 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 00:35:43,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:35:43 BoogieIcfgContainer [2020-08-22 00:35:43,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:35:43,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:35:43,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:35:43,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:35:43,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:35:42" (1/3) ... [2020-08-22 00:35:43,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f537803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:35:43, skipping insertion in model container [2020-08-22 00:35:43,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:35:43" (2/3) ... [2020-08-22 00:35:43,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f537803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:35:43, skipping insertion in model container [2020-08-22 00:35:43,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:35:43" (3/3) ... [2020-08-22 00:35:43,464 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i25_o25-1.c [2020-08-22 00:35:43,475 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:35:43,483 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:35:43,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:35:43,520 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:35:43,521 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:35:43,521 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:35:43,521 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:35:43,521 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:35:43,521 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:35:43,521 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:35:43,522 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:35:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-22 00:35:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 00:35:43,542 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:43,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:43,543 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:43,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:43,547 INFO L82 PathProgramCache]: Analyzing trace with hash -872342019, now seen corresponding path program 1 times [2020-08-22 00:35:43,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:43,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050747271] [2020-08-22 00:35:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:43,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:43,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:35:43,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050747271] [2020-08-22 00:35:43,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:35:43,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:35:43,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717879836] [2020-08-22 00:35:43,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:35:43,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:43,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:35:43,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:35:43,913 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-08-22 00:35:44,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:44,051 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-08-22 00:35:44,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:35:44,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 00:35:44,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:44,071 INFO L225 Difference]: With dead ends: 30 [2020-08-22 00:35:44,071 INFO L226 Difference]: Without dead ends: 18 [2020-08-22 00:35:44,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:35:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-22 00:35:44,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-22 00:35:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-22 00:35:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-08-22 00:35:44,132 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-08-22 00:35:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:44,133 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-08-22 00:35:44,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:35:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-08-22 00:35:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 00:35:44,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:44,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:44,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:35:44,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:44,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:44,142 INFO L82 PathProgramCache]: Analyzing trace with hash -953570577, now seen corresponding path program 1 times [2020-08-22 00:35:44,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:44,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094584358] [2020-08-22 00:35:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 00:35:44,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094584358] [2020-08-22 00:35:44,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:44,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 00:35:44,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975431370] [2020-08-22 00:35:44,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:35:44,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:44,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:35:44,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:35:44,282 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-08-22 00:35:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:44,339 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-08-22 00:35:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:35:44,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-22 00:35:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:44,341 INFO L225 Difference]: With dead ends: 25 [2020-08-22 00:35:44,341 INFO L226 Difference]: Without dead ends: 21 [2020-08-22 00:35:44,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:35:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-22 00:35:44,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-22 00:35:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-22 00:35:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-08-22 00:35:44,350 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-08-22 00:35:44,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:44,351 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-08-22 00:35:44,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:35:44,351 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-08-22 00:35:44,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 00:35:44,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:44,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:44,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:35:44,353 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:44,354 INFO L82 PathProgramCache]: Analyzing trace with hash 397359997, now seen corresponding path program 2 times [2020-08-22 00:35:44,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:44,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129617582] [2020-08-22 00:35:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 00:35:44,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129617582] [2020-08-22 00:35:44,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:44,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 00:35:44,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876328694] [2020-08-22 00:35:44,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:35:44,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:44,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:35:44,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:35:44,519 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 7 states. [2020-08-22 00:35:44,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:44,587 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-08-22 00:35:44,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:35:44,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-08-22 00:35:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:44,590 INFO L225 Difference]: With dead ends: 28 [2020-08-22 00:35:44,590 INFO L226 Difference]: Without dead ends: 24 [2020-08-22 00:35:44,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:35:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-22 00:35:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-08-22 00:35:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-22 00:35:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-08-22 00:35:44,597 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-08-22 00:35:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:44,598 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-08-22 00:35:44,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:35:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-08-22 00:35:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 00:35:44,599 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:44,599 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:44,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:35:44,600 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:44,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1198310127, now seen corresponding path program 3 times [2020-08-22 00:35:44,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:44,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474218121] [2020-08-22 00:35:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 00:35:44,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474218121] [2020-08-22 00:35:44,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:44,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 00:35:44,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088334681] [2020-08-22 00:35:44,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:35:44,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:44,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:35:44,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:35:44,769 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-08-22 00:35:44,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:44,852 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-08-22 00:35:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:35:44,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-22 00:35:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:44,866 INFO L225 Difference]: With dead ends: 31 [2020-08-22 00:35:44,866 INFO L226 Difference]: Without dead ends: 27 [2020-08-22 00:35:44,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:35:44,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-22 00:35:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-22 00:35:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 00:35:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-08-22 00:35:44,874 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-08-22 00:35:44,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:44,875 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-08-22 00:35:44,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:35:44,875 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-08-22 00:35:44,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 00:35:44,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:44,877 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:44,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:35:44,877 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:44,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:44,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1080764669, now seen corresponding path program 4 times [2020-08-22 00:35:44,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:44,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706545591] [2020-08-22 00:35:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:44,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-22 00:35:45,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706545591] [2020-08-22 00:35:45,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:45,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 00:35:45,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616258730] [2020-08-22 00:35:45,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:35:45,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:45,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:35:45,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:35:45,077 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2020-08-22 00:35:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:45,162 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-08-22 00:35:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:35:45,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-08-22 00:35:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:45,164 INFO L225 Difference]: With dead ends: 34 [2020-08-22 00:35:45,165 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 00:35:45,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:35:45,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 00:35:45,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 00:35:45,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 00:35:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-08-22 00:35:45,172 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-08-22 00:35:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:45,173 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-08-22 00:35:45,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:35:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-08-22 00:35:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-22 00:35:45,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:45,174 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:45,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:35:45,175 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:45,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1752970513, now seen corresponding path program 5 times [2020-08-22 00:35:45,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:45,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482488505] [2020-08-22 00:35:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 00:35:45,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482488505] [2020-08-22 00:35:45,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:45,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:35:45,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867917115] [2020-08-22 00:35:45,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:35:45,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:45,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:35:45,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:35:45,353 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 10 states. [2020-08-22 00:35:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:45,443 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-08-22 00:35:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:35:45,444 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-08-22 00:35:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:45,445 INFO L225 Difference]: With dead ends: 37 [2020-08-22 00:35:45,445 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 00:35:45,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:35:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 00:35:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-22 00:35:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-22 00:35:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-08-22 00:35:45,453 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-08-22 00:35:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:45,453 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-08-22 00:35:45,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:35:45,453 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-08-22 00:35:45,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-22 00:35:45,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:45,455 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:45,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:35:45,455 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:45,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:45,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1590630787, now seen corresponding path program 6 times [2020-08-22 00:35:45,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:45,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735605707] [2020-08-22 00:35:45,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-22 00:35:45,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735605707] [2020-08-22 00:35:45,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:45,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 00:35:45,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690015553] [2020-08-22 00:35:45,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 00:35:45,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:45,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 00:35:45,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:35:45,661 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-08-22 00:35:45,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:45,788 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-08-22 00:35:45,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:35:45,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-08-22 00:35:45,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:45,790 INFO L225 Difference]: With dead ends: 40 [2020-08-22 00:35:45,790 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 00:35:45,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:35:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 00:35:45,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-22 00:35:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-22 00:35:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-08-22 00:35:45,797 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2020-08-22 00:35:45,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:45,797 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-08-22 00:35:45,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 00:35:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-08-22 00:35:45,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 00:35:45,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:45,799 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:45,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:35:45,799 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:45,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:45,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1532150511, now seen corresponding path program 7 times [2020-08-22 00:35:45,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:45,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699122087] [2020-08-22 00:35:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-08-22 00:35:46,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699122087] [2020-08-22 00:35:46,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:46,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:35:46,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892859382] [2020-08-22 00:35:46,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:35:46,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:46,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:35:46,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:35:46,026 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 12 states. [2020-08-22 00:35:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:46,169 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-08-22 00:35:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:35:46,169 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-08-22 00:35:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:46,171 INFO L225 Difference]: With dead ends: 43 [2020-08-22 00:35:46,171 INFO L226 Difference]: Without dead ends: 39 [2020-08-22 00:35:46,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-22 00:35:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-22 00:35:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-22 00:35:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 00:35:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-08-22 00:35:46,184 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2020-08-22 00:35:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:46,184 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-08-22 00:35:46,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:35:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-08-22 00:35:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 00:35:46,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:46,188 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:46,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:35:46,189 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:46,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:46,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1140618237, now seen corresponding path program 8 times [2020-08-22 00:35:46,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:46,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935140324] [2020-08-22 00:35:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-22 00:35:46,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935140324] [2020-08-22 00:35:46,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:46,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 00:35:46,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446448688] [2020-08-22 00:35:46,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:35:46,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:46,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:35:46,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:35:46,499 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 13 states. [2020-08-22 00:35:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:46,642 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-08-22 00:35:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 00:35:46,642 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-08-22 00:35:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:46,644 INFO L225 Difference]: With dead ends: 46 [2020-08-22 00:35:46,644 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 00:35:46,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-22 00:35:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 00:35:46,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-22 00:35:46,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 00:35:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-08-22 00:35:46,652 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2020-08-22 00:35:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:46,652 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-08-22 00:35:46,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:35:46,652 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-08-22 00:35:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 00:35:46,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:46,654 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:46,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:35:46,654 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:46,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1749177617, now seen corresponding path program 9 times [2020-08-22 00:35:46,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:46,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591377055] [2020-08-22 00:35:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:46,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-08-22 00:35:47,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591377055] [2020-08-22 00:35:47,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:47,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 00:35:47,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647816456] [2020-08-22 00:35:47,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 00:35:47,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:47,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 00:35:47,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:35:47,011 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 14 states. [2020-08-22 00:35:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:47,140 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-08-22 00:35:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 00:35:47,141 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-08-22 00:35:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:47,142 INFO L225 Difference]: With dead ends: 49 [2020-08-22 00:35:47,143 INFO L226 Difference]: Without dead ends: 45 [2020-08-22 00:35:47,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-08-22 00:35:47,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-22 00:35:47,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-08-22 00:35:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-22 00:35:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-08-22 00:35:47,149 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2020-08-22 00:35:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:47,150 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-08-22 00:35:47,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 00:35:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-08-22 00:35:47,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-22 00:35:47,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:47,152 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:47,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:35:47,152 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:47,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:47,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1580609155, now seen corresponding path program 10 times [2020-08-22 00:35:47,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:47,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205988196] [2020-08-22 00:35:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-22 00:35:47,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205988196] [2020-08-22 00:35:47,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:47,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 00:35:47,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993094217] [2020-08-22 00:35:47,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 00:35:47,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:47,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 00:35:47,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-22 00:35:47,515 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 15 states. [2020-08-22 00:35:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:47,676 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-08-22 00:35:47,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 00:35:47,677 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2020-08-22 00:35:47,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:47,678 INFO L225 Difference]: With dead ends: 52 [2020-08-22 00:35:47,678 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 00:35:47,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-08-22 00:35:47,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 00:35:47,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-08-22 00:35:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 00:35:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-08-22 00:35:47,685 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2020-08-22 00:35:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:47,686 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-08-22 00:35:47,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 00:35:47,686 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-08-22 00:35:47,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 00:35:47,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:47,687 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:47,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:35:47,688 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:47,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:47,688 INFO L82 PathProgramCache]: Analyzing trace with hash -223837457, now seen corresponding path program 11 times [2020-08-22 00:35:47,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:47,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863808650] [2020-08-22 00:35:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:47,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-08-22 00:35:48,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863808650] [2020-08-22 00:35:48,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:48,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 00:35:48,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537749676] [2020-08-22 00:35:48,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 00:35:48,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:48,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 00:35:48,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:35:48,070 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 16 states. [2020-08-22 00:35:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:48,274 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-08-22 00:35:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 00:35:48,274 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-08-22 00:35:48,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:48,276 INFO L225 Difference]: With dead ends: 55 [2020-08-22 00:35:48,276 INFO L226 Difference]: Without dead ends: 51 [2020-08-22 00:35:48,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-08-22 00:35:48,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-22 00:35:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-08-22 00:35:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-22 00:35:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-08-22 00:35:48,284 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2020-08-22 00:35:48,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:48,285 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-08-22 00:35:48,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 00:35:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-08-22 00:35:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 00:35:48,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:48,286 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:48,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 00:35:48,287 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:48,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1653931773, now seen corresponding path program 12 times [2020-08-22 00:35:48,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:48,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063770927] [2020-08-22 00:35:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-08-22 00:35:48,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063770927] [2020-08-22 00:35:48,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:48,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 00:35:48,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198998507] [2020-08-22 00:35:48,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 00:35:48,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:48,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 00:35:48,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-08-22 00:35:48,823 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 17 states. [2020-08-22 00:35:49,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:49,004 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-08-22 00:35:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 00:35:49,004 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2020-08-22 00:35:49,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:49,006 INFO L225 Difference]: With dead ends: 58 [2020-08-22 00:35:49,006 INFO L226 Difference]: Without dead ends: 54 [2020-08-22 00:35:49,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-08-22 00:35:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-22 00:35:49,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-22 00:35:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 00:35:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-08-22 00:35:49,012 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2020-08-22 00:35:49,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:49,012 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-08-22 00:35:49,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 00:35:49,013 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-08-22 00:35:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-22 00:35:49,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:49,014 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:49,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 00:35:49,014 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:49,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:49,014 INFO L82 PathProgramCache]: Analyzing trace with hash -218674449, now seen corresponding path program 13 times [2020-08-22 00:35:49,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:49,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877996383] [2020-08-22 00:35:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-08-22 00:35:49,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877996383] [2020-08-22 00:35:49,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:49,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 00:35:49,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069782842] [2020-08-22 00:35:49,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 00:35:49,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:49,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 00:35:49,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:35:49,460 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 18 states. [2020-08-22 00:35:49,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:49,683 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-08-22 00:35:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 00:35:49,684 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 91 [2020-08-22 00:35:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:49,685 INFO L225 Difference]: With dead ends: 61 [2020-08-22 00:35:49,685 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 00:35:49,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-08-22 00:35:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 00:35:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-08-22 00:35:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-22 00:35:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-08-22 00:35:49,692 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2020-08-22 00:35:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:49,692 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-08-22 00:35:49,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 00:35:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-08-22 00:35:49,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 00:35:49,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:49,694 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:49,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 00:35:49,694 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:49,695 INFO L82 PathProgramCache]: Analyzing trace with hash 492436605, now seen corresponding path program 14 times [2020-08-22 00:35:49,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:49,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834679374] [2020-08-22 00:35:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:49,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-08-22 00:35:50,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834679374] [2020-08-22 00:35:50,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:50,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 00:35:50,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915887128] [2020-08-22 00:35:50,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 00:35:50,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:50,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 00:35:50,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-08-22 00:35:50,180 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 19 states. [2020-08-22 00:35:50,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:50,403 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-08-22 00:35:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 00:35:50,403 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2020-08-22 00:35:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:50,404 INFO L225 Difference]: With dead ends: 64 [2020-08-22 00:35:50,404 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 00:35:50,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 00:35:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 00:35:50,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-22 00:35:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 00:35:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-08-22 00:35:50,411 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2020-08-22 00:35:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:50,412 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-08-22 00:35:50,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 00:35:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-08-22 00:35:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-22 00:35:50,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:50,413 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:50,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 00:35:50,414 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:50,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:50,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1083048687, now seen corresponding path program 15 times [2020-08-22 00:35:50,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:50,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126732274] [2020-08-22 00:35:50,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-08-22 00:35:51,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126732274] [2020-08-22 00:35:51,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:51,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-22 00:35:51,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185941698] [2020-08-22 00:35:51,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 00:35:51,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:51,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 00:35:51,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-08-22 00:35:51,118 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 20 states. [2020-08-22 00:35:51,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:51,424 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-08-22 00:35:51,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 00:35:51,425 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2020-08-22 00:35:51,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:51,429 INFO L225 Difference]: With dead ends: 67 [2020-08-22 00:35:51,429 INFO L226 Difference]: Without dead ends: 63 [2020-08-22 00:35:51,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=461, Invalid=799, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 00:35:51,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-22 00:35:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-08-22 00:35:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-22 00:35:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-08-22 00:35:51,442 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 103 [2020-08-22 00:35:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:51,442 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-08-22 00:35:51,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 00:35:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-08-22 00:35:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 00:35:51,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:51,447 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:51,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 00:35:51,447 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:51,447 INFO L82 PathProgramCache]: Analyzing trace with hash 404015613, now seen corresponding path program 16 times [2020-08-22 00:35:51,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:51,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167465599] [2020-08-22 00:35:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-08-22 00:35:52,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167465599] [2020-08-22 00:35:52,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:52,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-22 00:35:52,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099307591] [2020-08-22 00:35:52,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 00:35:52,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:52,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 00:35:52,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-08-22 00:35:52,109 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 21 states. [2020-08-22 00:35:52,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:52,335 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-08-22 00:35:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 00:35:52,336 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 109 [2020-08-22 00:35:52,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:52,337 INFO L225 Difference]: With dead ends: 70 [2020-08-22 00:35:52,337 INFO L226 Difference]: Without dead ends: 66 [2020-08-22 00:35:52,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 00:35:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-08-22 00:35:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-08-22 00:35:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-22 00:35:52,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-08-22 00:35:52,347 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 109 [2020-08-22 00:35:52,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:52,348 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-08-22 00:35:52,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 00:35:52,348 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-08-22 00:35:52,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-22 00:35:52,349 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:52,349 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:52,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 00:35:52,349 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:52,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:52,350 INFO L82 PathProgramCache]: Analyzing trace with hash -464475409, now seen corresponding path program 17 times [2020-08-22 00:35:52,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:52,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487920085] [2020-08-22 00:35:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:52,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-08-22 00:35:53,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487920085] [2020-08-22 00:35:53,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:53,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 00:35:53,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706222821] [2020-08-22 00:35:53,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 00:35:53,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:53,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 00:35:53,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-08-22 00:35:53,080 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 22 states. [2020-08-22 00:35:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:53,329 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-08-22 00:35:53,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 00:35:53,329 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 115 [2020-08-22 00:35:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:53,330 INFO L225 Difference]: With dead ends: 73 [2020-08-22 00:35:53,330 INFO L226 Difference]: Without dead ends: 69 [2020-08-22 00:35:53,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 00:35:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-22 00:35:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-22 00:35:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 00:35:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-08-22 00:35:53,340 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 115 [2020-08-22 00:35:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:53,341 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-08-22 00:35:53,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 00:35:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-08-22 00:35:53,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-22 00:35:53,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:53,342 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:53,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 00:35:53,343 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:53,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:53,343 INFO L82 PathProgramCache]: Analyzing trace with hash 130115453, now seen corresponding path program 18 times [2020-08-22 00:35:53,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:53,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026541202] [2020-08-22 00:35:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:53,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-08-22 00:35:54,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026541202] [2020-08-22 00:35:54,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:54,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-22 00:35:54,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173917557] [2020-08-22 00:35:54,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 00:35:54,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:54,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 00:35:54,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-08-22 00:35:54,119 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 23 states. [2020-08-22 00:35:54,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:54,397 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-08-22 00:35:54,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 00:35:54,398 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 121 [2020-08-22 00:35:54,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:54,399 INFO L225 Difference]: With dead ends: 76 [2020-08-22 00:35:54,399 INFO L226 Difference]: Without dead ends: 72 [2020-08-22 00:35:54,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 00:35:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-22 00:35:54,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-22 00:35:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-22 00:35:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-08-22 00:35:54,408 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 121 [2020-08-22 00:35:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:54,409 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-08-22 00:35:54,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 00:35:54,409 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-08-22 00:35:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-22 00:35:54,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:54,412 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:54,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 00:35:54,413 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:54,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:54,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2010955025, now seen corresponding path program 19 times [2020-08-22 00:35:54,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:54,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859414511] [2020-08-22 00:35:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:54,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:55,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:55,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:55,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:55,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-08-22 00:35:55,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859414511] [2020-08-22 00:35:55,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:55,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-22 00:35:55,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964899724] [2020-08-22 00:35:55,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 00:35:55,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:55,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 00:35:55,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-08-22 00:35:55,315 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 24 states. [2020-08-22 00:35:55,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:55,698 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-08-22 00:35:55,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 00:35:55,698 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 127 [2020-08-22 00:35:55,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:55,701 INFO L225 Difference]: With dead ends: 79 [2020-08-22 00:35:55,701 INFO L226 Difference]: Without dead ends: 75 [2020-08-22 00:35:55,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 00:35:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-08-22 00:35:55,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-08-22 00:35:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-22 00:35:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-08-22 00:35:55,713 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 127 [2020-08-22 00:35:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:55,713 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-08-22 00:35:55,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 00:35:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-08-22 00:35:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-08-22 00:35:55,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:55,717 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:55,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 00:35:55,717 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:55,718 INFO L82 PathProgramCache]: Analyzing trace with hash -799288067, now seen corresponding path program 20 times [2020-08-22 00:35:55,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:55,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026310418] [2020-08-22 00:35:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:55,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:55,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:55,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-08-22 00:35:56,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026310418] [2020-08-22 00:35:56,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:56,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-22 00:35:56,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320857626] [2020-08-22 00:35:56,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-22 00:35:56,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:56,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-22 00:35:56,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-08-22 00:35:56,691 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 25 states. [2020-08-22 00:35:57,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:57,007 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-08-22 00:35:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:35:57,008 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 133 [2020-08-22 00:35:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:57,009 INFO L225 Difference]: With dead ends: 82 [2020-08-22 00:35:57,009 INFO L226 Difference]: Without dead ends: 78 [2020-08-22 00:35:57,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 00:35:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-22 00:35:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-22 00:35:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 00:35:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-08-22 00:35:57,015 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 133 [2020-08-22 00:35:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:57,015 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-08-22 00:35:57,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-22 00:35:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-08-22 00:35:57,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-22 00:35:57,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:57,017 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:57,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 00:35:57,018 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:57,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1226192145, now seen corresponding path program 21 times [2020-08-22 00:35:57,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:57,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560167675] [2020-08-22 00:35:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:57,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-08-22 00:35:58,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560167675] [2020-08-22 00:35:58,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:58,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-22 00:35:58,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759020318] [2020-08-22 00:35:58,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-22 00:35:58,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:58,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-22 00:35:58,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-08-22 00:35:58,136 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 26 states. [2020-08-22 00:35:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:35:58,514 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-08-22 00:35:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 00:35:58,516 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 139 [2020-08-22 00:35:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:35:58,517 INFO L225 Difference]: With dead ends: 85 [2020-08-22 00:35:58,517 INFO L226 Difference]: Without dead ends: 81 [2020-08-22 00:35:58,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=830, Invalid=1426, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 00:35:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-22 00:35:58,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-08-22 00:35:58,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-22 00:35:58,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-08-22 00:35:58,526 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 139 [2020-08-22 00:35:58,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:35:58,526 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-08-22 00:35:58,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-22 00:35:58,526 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-08-22 00:35:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-22 00:35:58,528 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:35:58,528 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:35:58,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 00:35:58,528 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:35:58,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:35:58,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1155535485, now seen corresponding path program 22 times [2020-08-22 00:35:58,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:35:58,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839343776] [2020-08-22 00:35:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:35:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:35:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:35:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:58,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:35:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:35:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-08-22 00:35:59,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839343776] [2020-08-22 00:35:59,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:35:59,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-08-22 00:35:59,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646418474] [2020-08-22 00:35:59,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-22 00:35:59,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:35:59,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-22 00:35:59,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-08-22 00:35:59,603 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 27 states. [2020-08-22 00:36:00,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:00,010 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2020-08-22 00:36:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 00:36:00,011 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 145 [2020-08-22 00:36:00,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:00,012 INFO L225 Difference]: With dead ends: 88 [2020-08-22 00:36:00,012 INFO L226 Difference]: Without dead ends: 84 [2020-08-22 00:36:00,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 00:36:00,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-08-22 00:36:00,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-08-22 00:36:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-22 00:36:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-08-22 00:36:00,018 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 145 [2020-08-22 00:36:00,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:00,018 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-08-22 00:36:00,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-22 00:36:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-08-22 00:36:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 00:36:00,020 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:00,021 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:36:00,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 00:36:00,021 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:00,021 INFO L82 PathProgramCache]: Analyzing trace with hash 478692079, now seen corresponding path program 23 times [2020-08-22 00:36:00,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:00,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741664619] [2020-08-22 00:36:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:36:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:00,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-08-22 00:36:01,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741664619] [2020-08-22 00:36:01,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:36:01,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 00:36:01,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898042382] [2020-08-22 00:36:01,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 00:36:01,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:36:01,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 00:36:01,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-08-22 00:36:01,204 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 28 states. [2020-08-22 00:36:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:01,643 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-08-22 00:36:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 00:36:01,644 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 151 [2020-08-22 00:36:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:01,646 INFO L225 Difference]: With dead ends: 91 [2020-08-22 00:36:01,646 INFO L226 Difference]: Without dead ends: 87 [2020-08-22 00:36:01,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 00:36:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-08-22 00:36:01,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-08-22 00:36:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-22 00:36:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-08-22 00:36:01,653 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 151 [2020-08-22 00:36:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:01,654 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-08-22 00:36:01,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 00:36:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-08-22 00:36:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 00:36:01,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:01,656 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:36:01,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 00:36:01,656 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:01,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:01,657 INFO L82 PathProgramCache]: Analyzing trace with hash -414572547, now seen corresponding path program 24 times [2020-08-22 00:36:01,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:01,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997841039] [2020-08-22 00:36:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:36:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:01,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-08-22 00:36:02,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997841039] [2020-08-22 00:36:02,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:36:02,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-22 00:36:02,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236459249] [2020-08-22 00:36:02,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 00:36:02,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:36:02,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 00:36:02,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-08-22 00:36:02,807 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 29 states. [2020-08-22 00:36:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:03,240 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2020-08-22 00:36:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 00:36:03,240 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 157 [2020-08-22 00:36:03,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:03,242 INFO L225 Difference]: With dead ends: 94 [2020-08-22 00:36:03,242 INFO L226 Difference]: Without dead ends: 90 [2020-08-22 00:36:03,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1055, Invalid=1807, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 00:36:03,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-22 00:36:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-08-22 00:36:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-22 00:36:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-08-22 00:36:03,247 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 157 [2020-08-22 00:36:03,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:03,248 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-08-22 00:36:03,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 00:36:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-08-22 00:36:03,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 00:36:03,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:03,250 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:36:03,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 00:36:03,250 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:03,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:03,251 INFO L82 PathProgramCache]: Analyzing trace with hash -975000849, now seen corresponding path program 25 times [2020-08-22 00:36:03,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:03,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426172543] [2020-08-22 00:36:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:03,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:03,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:36:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:03,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:03,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:03,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:03,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:04,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:04,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:04,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:04,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:04,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:05,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:05,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:05,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:05,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:05,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-08-22 00:36:06,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426172543] [2020-08-22 00:36:06,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:36:06,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-08-22 00:36:06,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049079710] [2020-08-22 00:36:06,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-08-22 00:36:06,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:36:06,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-08-22 00:36:06,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 00:36:06,590 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 55 states. [2020-08-22 00:36:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:07,945 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2020-08-22 00:36:07,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-22 00:36:07,946 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 163 [2020-08-22 00:36:07,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:07,947 INFO L225 Difference]: With dead ends: 97 [2020-08-22 00:36:07,947 INFO L226 Difference]: Without dead ends: 93 [2020-08-22 00:36:07,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 00:36:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-22 00:36:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-08-22 00:36:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-22 00:36:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-08-22 00:36:07,953 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 163 [2020-08-22 00:36:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:07,954 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-08-22 00:36:07,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-08-22 00:36:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-08-22 00:36:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-22 00:36:07,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:07,955 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:36:07,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 00:36:07,956 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:07,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:07,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1466565251, now seen corresponding path program 26 times [2020-08-22 00:36:07,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:07,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697723906] [2020-08-22 00:36:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:36:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:08,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:09,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 975 proven. 52 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-08-22 00:36:09,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697723906] [2020-08-22 00:36:09,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:36:09,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-08-22 00:36:09,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807236743] [2020-08-22 00:36:09,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 00:36:09,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:36:09,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 00:36:09,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=546, Unknown=0, NotChecked=0, Total=930 [2020-08-22 00:36:09,290 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 31 states. [2020-08-22 00:36:10,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:10,020 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2020-08-22 00:36:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 00:36:10,020 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 169 [2020-08-22 00:36:10,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:10,021 INFO L225 Difference]: With dead ends: 93 [2020-08-22 00:36:10,021 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:36:10,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1142, Invalid=2164, Unknown=0, NotChecked=0, Total=3306 [2020-08-22 00:36:10,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:36:10,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:36:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:36:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:36:10,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 169 [2020-08-22 00:36:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:10,025 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:36:10,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 00:36:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:36:10,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:36:10,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 00:36:10,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:36:10,064 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 00:36:10,064 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:36:10,064 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:36:10,064 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 00:36:10,064 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 00:36:10,064 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 00:36:10,064 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-08-22 00:36:10,065 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 15) the Hoare annotation is: true [2020-08-22 00:36:10,065 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 15) no Hoare annotation was computed. [2020-08-22 00:36:10,065 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-08-22 00:36:10,065 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-08-22 00:36:10,065 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= 25 main_~input~0) (<= main_~input~0 25)) [2020-08-22 00:36:10,065 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-08-22 00:36:10,065 INFO L268 CegarLoopResult]: For program point L12-2(lines 9 15) no Hoare annotation was computed. [2020-08-22 00:36:10,065 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-22 00:36:10,066 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-22 00:36:10,066 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2020-08-22 00:36:10,066 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-08-22 00:36:10,066 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-22 00:36:10,066 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-08-22 00:36:10,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:36:10 BoogieIcfgContainer [2020-08-22 00:36:10,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:36:10,088 INFO L168 Benchmark]: Toolchain (without parser) took 27193.52 ms. Allocated memory was 137.9 MB in the beginning and 721.4 MB in the end (delta: 583.5 MB). Free memory was 101.0 MB in the beginning and 670.9 MB in the end (delta: -569.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 00:36:10,089 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:36:10,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.38 ms. Allocated memory is still 137.9 MB. Free memory was 100.8 MB in the beginning and 91.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:36:10,092 INFO L168 Benchmark]: Boogie Preprocessor took 24.69 ms. Allocated memory is still 137.9 MB. Free memory was 91.5 MB in the beginning and 90.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:36:10,092 INFO L168 Benchmark]: RCFGBuilder took 308.14 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.1 MB in the beginning and 168.4 MB in the end (delta: -78.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:36:10,096 INFO L168 Benchmark]: TraceAbstraction took 26621.42 ms. Allocated memory was 200.8 MB in the beginning and 721.4 MB in the end (delta: 520.6 MB). Free memory was 168.4 MB in the beginning and 670.9 MB in the end (delta: -502.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-08-22 00:36:10,102 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 226.38 ms. Allocated memory is still 137.9 MB. Free memory was 100.8 MB in the beginning and 91.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.69 ms. Allocated memory is still 137.9 MB. Free memory was 91.5 MB in the beginning and 90.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.14 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.1 MB in the beginning and 168.4 MB in the end (delta: -78.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26621.42 ms. Allocated memory was 200.8 MB in the beginning and 721.4 MB in the end (delta: 520.6 MB). Free memory was 168.4 MB in the beginning and 670.9 MB in the end (delta: -502.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.5s, OverallIterations: 27, TraceHistogramMax: 27, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 455 SDtfs, 782 SDslu, 4695 SDs, 0 SdLazy, 3193 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1647 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 809 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4951 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 27 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 2457 NumberOfCodeBlocks, 2457 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2430 ConstructedInterpolants, 0 QuantifiedInterpolants, 744336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 1 PerfectInterpolantSequences, 10452/18954 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 correct! Received shutdown request...