/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:16:36,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:16:36,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:16:36,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:16:36,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:16:36,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:16:36,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:16:36,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:16:36,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:16:36,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:16:36,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:16:36,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:16:36,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:16:36,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:16:36,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:16:36,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:16:36,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:16:36,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:16:36,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:16:36,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:16:36,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:16:36,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:16:36,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:16:36,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:16:36,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:16:36,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:16:36,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:16:36,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:16:36,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:16:36,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 18:16:36,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:16:36,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:16:36,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:16:36,597 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 [2020-08-21 18:16:36,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:16:36,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:16:36,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:16:36,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:16:36,620 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:16:36,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:16:36,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:16:36,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:16:36,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:16:36,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:16:36,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:16:36,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:16:36,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:16:36,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:16:36,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:16:36,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:16:36,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:16:36,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:16:36,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:16:36,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:16:36,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:16:36,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:16:36,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:16:36,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:16:36,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:16:36,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:16:36,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:16:36,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:16:36,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:16:36,625 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:16:36,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:16:36,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:16:36,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:16:36,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:16:36,975 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:16:36,975 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-21 18:16:37,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86977a447/ce0084065eaa4fc387ef5860a4e83b47/FLAGb9315e792 [2020-08-21 18:16:37,458 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:16:37,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-21 18:16:37,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86977a447/ce0084065eaa4fc387ef5860a4e83b47/FLAGb9315e792 [2020-08-21 18:16:37,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86977a447/ce0084065eaa4fc387ef5860a4e83b47 [2020-08-21 18:16:37,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:16:37,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:16:37,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:16:37,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:16:37,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:16:37,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:16:37" (1/1) ... [2020-08-21 18:16:37,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770ea115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:37, skipping insertion in model container [2020-08-21 18:16:37,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:16:37" (1/1) ... [2020-08-21 18:16:37,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:16:37,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:16:38,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:16:38,121 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:16:38,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:16:38,150 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:16:38,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:38 WrapperNode [2020-08-21 18:16:38,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:16:38,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:16:38,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:16:38,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:16:38,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:38" (1/1) ... [2020-08-21 18:16:38,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:38" (1/1) ... [2020-08-21 18:16:38,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:38" (1/1) ... [2020-08-21 18:16:38,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:38" (1/1) ... [2020-08-21 18:16:38,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:38" (1/1) ... [2020-08-21 18:16:38,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:38" (1/1) ... [2020-08-21 18:16:38,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:38" (1/1) ... [2020-08-21 18:16:38,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:16:38,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:16:38,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:16:38,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:16:38,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:38" (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 [2020-08-21 18:16:38,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:16:38,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:16:38,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 18:16:38,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 18:16:38,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:16:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:16:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 18:16:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 18:16:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 18:16:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:16:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:16:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:16:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:16:38,583 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:16:38,583 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 18:16:38,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:16:38 BoogieIcfgContainer [2020-08-21 18:16:38,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:16:38,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:16:38,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:16:38,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:16:38,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:16:37" (1/3) ... [2020-08-21 18:16:38,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279067c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:16:38, skipping insertion in model container [2020-08-21 18:16:38,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:16:38" (2/3) ... [2020-08-21 18:16:38,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279067c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:16:38, skipping insertion in model container [2020-08-21 18:16:38,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:16:38" (3/3) ... [2020-08-21 18:16:38,596 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-08-21 18:16:38,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:16:38,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:16:38,628 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:16:38,654 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:16:38,654 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:16:38,654 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:16:38,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:16:38,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:16:38,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:16:38,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:16:38,655 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:16:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-21 18:16:38,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 18:16:38,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:38,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:38,678 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:38,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:38,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1671060194, now seen corresponding path program 1 times [2020-08-21 18:16:38,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:38,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794182832] [2020-08-21 18:16:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:39,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:16:39,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794182832] [2020-08-21 18:16:39,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:16:39,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:16:39,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432919003] [2020-08-21 18:16:39,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:16:39,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:39,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:16:39,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:16:39,059 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 8 states. [2020-08-21 18:16:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:39,449 INFO L93 Difference]: Finished difference Result 68 states and 95 transitions. [2020-08-21 18:16:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:16:39,451 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-21 18:16:39,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:39,461 INFO L225 Difference]: With dead ends: 68 [2020-08-21 18:16:39,461 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 18:16:39,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:16:39,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 18:16:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-08-21 18:16:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 18:16:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-21 18:16:39,518 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2020-08-21 18:16:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:39,519 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-21 18:16:39,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:16:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-21 18:16:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 18:16:39,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:39,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:39,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:16:39,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:39,523 INFO L82 PathProgramCache]: Analyzing trace with hash -764881689, now seen corresponding path program 1 times [2020-08-21 18:16:39,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:39,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676534288] [2020-08-21 18:16:39,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:39,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:39,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:16:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:39,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 18:16:39,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676534288] [2020-08-21 18:16:39,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:16:39,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:16:39,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94991006] [2020-08-21 18:16:39,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:16:39,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:39,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:16:39,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:16:39,609 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2020-08-21 18:16:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:39,783 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-08-21 18:16:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:16:39,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-21 18:16:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:39,787 INFO L225 Difference]: With dead ends: 57 [2020-08-21 18:16:39,788 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 18:16:39,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:16:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 18:16:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-21 18:16:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 18:16:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-21 18:16:39,799 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2020-08-21 18:16:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:39,800 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-21 18:16:39,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:16:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-21 18:16:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 18:16:39,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:39,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:39,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:16:39,802 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:39,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1134636734, now seen corresponding path program 1 times [2020-08-21 18:16:39,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:39,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651167050] [2020-08-21 18:16:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:39,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:16:39,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651167050] [2020-08-21 18:16:39,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:39,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 18:16:39,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289003523] [2020-08-21 18:16:39,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:16:39,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:39,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:16:39,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:16:39,921 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-08-21 18:16:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:40,161 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-08-21 18:16:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 18:16:40,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-08-21 18:16:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:40,163 INFO L225 Difference]: With dead ends: 70 [2020-08-21 18:16:40,164 INFO L226 Difference]: Without dead ends: 51 [2020-08-21 18:16:40,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:16:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-21 18:16:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2020-08-21 18:16:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 18:16:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-08-21 18:16:40,181 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 28 [2020-08-21 18:16:40,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:40,181 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-08-21 18:16:40,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:16:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-08-21 18:16:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-21 18:16:40,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:40,184 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:40,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:16:40,184 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:40,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:40,185 INFO L82 PathProgramCache]: Analyzing trace with hash 83931911, now seen corresponding path program 2 times [2020-08-21 18:16:40,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:40,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738987674] [2020-08-21 18:16:40,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:40,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:40,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 18:16:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 18:16:40,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738987674] [2020-08-21 18:16:40,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:40,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 18:16:40,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421430032] [2020-08-21 18:16:40,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:16:40,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:40,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:16:40,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:16:40,298 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-08-21 18:16:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:40,440 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-08-21 18:16:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 18:16:40,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-08-21 18:16:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:40,444 INFO L225 Difference]: With dead ends: 63 [2020-08-21 18:16:40,444 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 18:16:40,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:16:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 18:16:40,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-21 18:16:40,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 18:16:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-08-21 18:16:40,460 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-08-21 18:16:40,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:40,461 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-08-21 18:16:40,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:16:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-08-21 18:16:40,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 18:16:40,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:40,462 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:40,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:16:40,463 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:40,463 INFO L82 PathProgramCache]: Analyzing trace with hash 848296232, now seen corresponding path program 1 times [2020-08-21 18:16:40,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:40,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114041569] [2020-08-21 18:16:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:40,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:40,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 18:16:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 18:16:40,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114041569] [2020-08-21 18:16:40,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:16:40,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:16:40,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586230212] [2020-08-21 18:16:40,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:16:40,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:40,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:16:40,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:16:40,520 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2020-08-21 18:16:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:40,600 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-08-21 18:16:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:16:40,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 18:16:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:40,602 INFO L225 Difference]: With dead ends: 75 [2020-08-21 18:16:40,602 INFO L226 Difference]: Without dead ends: 42 [2020-08-21 18:16:40,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:16:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-21 18:16:40,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-21 18:16:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 18:16:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-21 18:16:40,614 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2020-08-21 18:16:40,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:40,614 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-21 18:16:40,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:16:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-21 18:16:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 18:16:40,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:40,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:40,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:16:40,617 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:40,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:40,617 INFO L82 PathProgramCache]: Analyzing trace with hash -670641491, now seen corresponding path program 2 times [2020-08-21 18:16:40,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:40,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046102945] [2020-08-21 18:16:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:40,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:40,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 18:16:40,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046102945] [2020-08-21 18:16:40,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:40,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 18:16:40,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387446672] [2020-08-21 18:16:40,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:16:40,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:40,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:16:40,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:16:40,760 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-08-21 18:16:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:41,023 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-08-21 18:16:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:16:41,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-08-21 18:16:41,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:41,025 INFO L225 Difference]: With dead ends: 60 [2020-08-21 18:16:41,025 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 18:16:41,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:16:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 18:16:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-08-21 18:16:41,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-21 18:16:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-08-21 18:16:41,038 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 41 [2020-08-21 18:16:41,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:41,038 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-08-21 18:16:41,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:16:41,039 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-08-21 18:16:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 18:16:41,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:41,040 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:41,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:16:41,041 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:41,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:41,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2015935239, now seen corresponding path program 3 times [2020-08-21 18:16:41,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:41,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350863645] [2020-08-21 18:16:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:16:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 18:16:41,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350863645] [2020-08-21 18:16:41,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:41,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 18:16:41,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567655402] [2020-08-21 18:16:41,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:16:41,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:41,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:16:41,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:16:41,212 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 10 states. [2020-08-21 18:16:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:41,455 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-08-21 18:16:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 18:16:41,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-08-21 18:16:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:41,458 INFO L225 Difference]: With dead ends: 74 [2020-08-21 18:16:41,458 INFO L226 Difference]: Without dead ends: 72 [2020-08-21 18:16:41,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:16:41,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-21 18:16:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-08-21 18:16:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-21 18:16:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-08-21 18:16:41,486 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 51 [2020-08-21 18:16:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:41,488 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-08-21 18:16:41,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:16:41,488 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-08-21 18:16:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 18:16:41,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:41,492 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:41,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:16:41,492 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:41,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:41,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1770393310, now seen corresponding path program 4 times [2020-08-21 18:16:41,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:41,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321563994] [2020-08-21 18:16:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:16:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-21 18:16:41,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321563994] [2020-08-21 18:16:41,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:41,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 18:16:41,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326990705] [2020-08-21 18:16:41,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:16:41,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:41,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:16:41,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:16:41,629 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 9 states. [2020-08-21 18:16:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:41,880 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-08-21 18:16:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 18:16:41,880 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-21 18:16:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:41,885 INFO L225 Difference]: With dead ends: 97 [2020-08-21 18:16:41,885 INFO L226 Difference]: Without dead ends: 61 [2020-08-21 18:16:41,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-08-21 18:16:41,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-21 18:16:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-21 18:16:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-21 18:16:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-08-21 18:16:41,908 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 58 [2020-08-21 18:16:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:41,910 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-08-21 18:16:41,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:16:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-08-21 18:16:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 18:16:41,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:41,914 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:41,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:16:41,914 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:41,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:41,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1336799475, now seen corresponding path program 5 times [2020-08-21 18:16:41,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:41,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132455614] [2020-08-21 18:16:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-08-21 18:16:42,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132455614] [2020-08-21 18:16:42,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:42,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:16:42,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414117903] [2020-08-21 18:16:42,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:16:42,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:42,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:16:42,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:16:42,089 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 12 states. [2020-08-21 18:16:42,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:42,372 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-08-21 18:16:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:16:42,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-08-21 18:16:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:42,374 INFO L225 Difference]: With dead ends: 90 [2020-08-21 18:16:42,375 INFO L226 Difference]: Without dead ends: 88 [2020-08-21 18:16:42,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2020-08-21 18:16:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-21 18:16:42,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2020-08-21 18:16:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-21 18:16:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-08-21 18:16:42,387 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 65 [2020-08-21 18:16:42,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:42,388 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-08-21 18:16:42,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:16:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-08-21 18:16:42,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-21 18:16:42,389 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:42,390 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:42,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:16:42,390 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:42,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:42,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1858831946, now seen corresponding path program 6 times [2020-08-21 18:16:42,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:42,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639811164] [2020-08-21 18:16:42,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-08-21 18:16:42,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639811164] [2020-08-21 18:16:42,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:42,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:16:42,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590855433] [2020-08-21 18:16:42,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:16:42,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:42,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:16:42,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:16:42,523 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 12 states. [2020-08-21 18:16:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:42,979 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2020-08-21 18:16:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 18:16:42,979 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-21 18:16:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:42,981 INFO L225 Difference]: With dead ends: 141 [2020-08-21 18:16:42,981 INFO L226 Difference]: Without dead ends: 96 [2020-08-21 18:16:42,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2020-08-21 18:16:42,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-21 18:16:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-08-21 18:16:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-21 18:16:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-08-21 18:16:43,011 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 72 [2020-08-21 18:16:43,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:43,013 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-08-21 18:16:43,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:16:43,013 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-08-21 18:16:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-21 18:16:43,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:43,019 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:43,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:16:43,020 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:43,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:43,021 INFO L82 PathProgramCache]: Analyzing trace with hash 179803111, now seen corresponding path program 7 times [2020-08-21 18:16:43,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:43,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329845014] [2020-08-21 18:16:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 18:16:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:16:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 18:16:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 162 proven. 49 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-08-21 18:16:43,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329845014] [2020-08-21 18:16:43,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:43,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 18:16:43,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541821147] [2020-08-21 18:16:43,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:16:43,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:43,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:16:43,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:16:43,200 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 11 states. [2020-08-21 18:16:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:43,542 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2020-08-21 18:16:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:16:43,542 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 109 [2020-08-21 18:16:43,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:43,544 INFO L225 Difference]: With dead ends: 155 [2020-08-21 18:16:43,544 INFO L226 Difference]: Without dead ends: 98 [2020-08-21 18:16:43,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2020-08-21 18:16:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-21 18:16:43,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-08-21 18:16:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-21 18:16:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-21 18:16:43,560 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 109 [2020-08-21 18:16:43,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:43,560 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-21 18:16:43,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:16:43,560 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-21 18:16:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-21 18:16:43,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:43,562 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:43,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:16:43,562 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash -888781782, now seen corresponding path program 8 times [2020-08-21 18:16:43,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:43,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782742895] [2020-08-21 18:16:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 18:16:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 182 proven. 62 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-08-21 18:16:43,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782742895] [2020-08-21 18:16:43,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:43,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 18:16:43,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294898793] [2020-08-21 18:16:43,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:16:43,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:43,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:16:43,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:16:43,693 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 11 states. [2020-08-21 18:16:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:44,001 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2020-08-21 18:16:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 18:16:44,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-08-21 18:16:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:44,004 INFO L225 Difference]: With dead ends: 178 [2020-08-21 18:16:44,005 INFO L226 Difference]: Without dead ends: 99 [2020-08-21 18:16:44,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2020-08-21 18:16:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-21 18:16:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-08-21 18:16:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-21 18:16:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2020-08-21 18:16:44,022 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 116 [2020-08-21 18:16:44,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:44,023 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2020-08-21 18:16:44,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:16:44,023 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2020-08-21 18:16:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-21 18:16:44,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:44,025 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:44,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 18:16:44,025 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:44,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:44,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1465957677, now seen corresponding path program 9 times [2020-08-21 18:16:44,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:44,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240909959] [2020-08-21 18:16:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 70 proven. 217 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-08-21 18:16:44,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240909959] [2020-08-21 18:16:44,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:44,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 18:16:44,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891529697] [2020-08-21 18:16:44,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 18:16:44,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:44,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 18:16:44,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:16:44,226 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 14 states. [2020-08-21 18:16:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:44,661 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2020-08-21 18:16:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:16:44,662 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 123 [2020-08-21 18:16:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:44,664 INFO L225 Difference]: With dead ends: 136 [2020-08-21 18:16:44,664 INFO L226 Difference]: Without dead ends: 134 [2020-08-21 18:16:44,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-08-21 18:16:44,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-21 18:16:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2020-08-21 18:16:44,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 18:16:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-08-21 18:16:44,681 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 123 [2020-08-21 18:16:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:44,681 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-08-21 18:16:44,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 18:16:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-08-21 18:16:44,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 18:16:44,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:44,683 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:44,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 18:16:44,684 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:44,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:44,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1688384554, now seen corresponding path program 10 times [2020-08-21 18:16:44,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:44,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594498833] [2020-08-21 18:16:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 61 proven. 271 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-08-21 18:16:44,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594498833] [2020-08-21 18:16:44,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:44,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 18:16:44,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797950531] [2020-08-21 18:16:44,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 18:16:44,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:44,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 18:16:44,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:16:44,871 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 14 states. [2020-08-21 18:16:45,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:45,536 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2020-08-21 18:16:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 18:16:45,543 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2020-08-21 18:16:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:45,545 INFO L225 Difference]: With dead ends: 234 [2020-08-21 18:16:45,546 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 18:16:45,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=462, Invalid=1178, Unknown=0, NotChecked=0, Total=1640 [2020-08-21 18:16:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 18:16:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 153. [2020-08-21 18:16:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 18:16:45,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2020-08-21 18:16:45,570 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 130 [2020-08-21 18:16:45,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:45,571 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2020-08-21 18:16:45,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 18:16:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2020-08-21 18:16:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 18:16:45,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:45,573 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:45,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 18:16:45,574 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:45,574 INFO L82 PathProgramCache]: Analyzing trace with hash -840848228, now seen corresponding path program 11 times [2020-08-21 18:16:45,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:45,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205659847] [2020-08-21 18:16:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 18:16:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 284 proven. 205 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2020-08-21 18:16:45,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205659847] [2020-08-21 18:16:45,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:45,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:16:45,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100474786] [2020-08-21 18:16:45,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:16:45,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:45,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:16:45,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:16:45,763 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand 13 states. [2020-08-21 18:16:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:46,398 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2020-08-21 18:16:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 18:16:46,399 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-21 18:16:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:46,402 INFO L225 Difference]: With dead ends: 218 [2020-08-21 18:16:46,402 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 18:16:46,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2020-08-21 18:16:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 18:16:46,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-08-21 18:16:46,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 18:16:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2020-08-21 18:16:46,444 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 154 [2020-08-21 18:16:46,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:46,445 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2020-08-21 18:16:46,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:16:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2020-08-21 18:16:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-21 18:16:46,451 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:46,452 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:46,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 18:16:46,452 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:46,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:46,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1311982393, now seen corresponding path program 12 times [2020-08-21 18:16:46,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:46,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336090601] [2020-08-21 18:16:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 80 proven. 422 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2020-08-21 18:16:46,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336090601] [2020-08-21 18:16:46,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:46,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 18:16:46,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370286945] [2020-08-21 18:16:46,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 18:16:46,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:46,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 18:16:46,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:16:46,837 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand 15 states. [2020-08-21 18:16:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:47,343 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2020-08-21 18:16:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:16:47,347 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 161 [2020-08-21 18:16:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:47,349 INFO L225 Difference]: With dead ends: 184 [2020-08-21 18:16:47,349 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 18:16:47,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-08-21 18:16:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 18:16:47,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 167. [2020-08-21 18:16:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-21 18:16:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 188 transitions. [2020-08-21 18:16:47,371 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 188 transitions. Word has length 161 [2020-08-21 18:16:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:47,372 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 188 transitions. [2020-08-21 18:16:47,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 18:16:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 188 transitions. [2020-08-21 18:16:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-21 18:16:47,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:47,375 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:47,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 18:16:47,375 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:47,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1425986384, now seen corresponding path program 13 times [2020-08-21 18:16:47,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:47,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846831103] [2020-08-21 18:16:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:16:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 89 proven. 521 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2020-08-21 18:16:47,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846831103] [2020-08-21 18:16:47,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:47,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:16:47,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613194238] [2020-08-21 18:16:47,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:16:47,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:47,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:16:47,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:16:47,646 INFO L87 Difference]: Start difference. First operand 167 states and 188 transitions. Second operand 16 states. [2020-08-21 18:16:48,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:48,645 INFO L93 Difference]: Finished difference Result 295 states and 344 transitions. [2020-08-21 18:16:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-21 18:16:48,645 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 168 [2020-08-21 18:16:48,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:48,648 INFO L225 Difference]: With dead ends: 295 [2020-08-21 18:16:48,648 INFO L226 Difference]: Without dead ends: 218 [2020-08-21 18:16:48,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=642, Invalid=1614, Unknown=0, NotChecked=0, Total=2256 [2020-08-21 18:16:48,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-08-21 18:16:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 187. [2020-08-21 18:16:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-08-21 18:16:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 216 transitions. [2020-08-21 18:16:48,673 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 216 transitions. Word has length 168 [2020-08-21 18:16:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:48,673 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 216 transitions. [2020-08-21 18:16:48,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:16:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 216 transitions. [2020-08-21 18:16:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-08-21 18:16:48,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:48,677 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 8, 7, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:48,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 18:16:48,677 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:48,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:48,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1410050128, now seen corresponding path program 14 times [2020-08-21 18:16:48,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:48,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140048340] [2020-08-21 18:16:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 18:16:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:16:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:16:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-21 18:16:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-21 18:16:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:16:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:16:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:16:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2506 backedges. 707 proven. 405 refuted. 0 times theorem prover too weak. 1394 trivial. 0 not checked. [2020-08-21 18:16:48,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140048340] [2020-08-21 18:16:48,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:48,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 18:16:48,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855018019] [2020-08-21 18:16:48,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 18:16:48,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:48,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 18:16:48,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:16:48,935 INFO L87 Difference]: Start difference. First operand 187 states and 216 transitions. Second operand 15 states. [2020-08-21 18:16:49,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:49,683 INFO L93 Difference]: Finished difference Result 304 states and 358 transitions. [2020-08-21 18:16:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 18:16:49,683 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2020-08-21 18:16:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:49,686 INFO L225 Difference]: With dead ends: 304 [2020-08-21 18:16:49,686 INFO L226 Difference]: Without dead ends: 209 [2020-08-21 18:16:49,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=425, Invalid=835, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 18:16:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-08-21 18:16:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 202. [2020-08-21 18:16:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-21 18:16:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2020-08-21 18:16:49,720 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 226 [2020-08-21 18:16:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:49,723 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2020-08-21 18:16:49,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 18:16:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2020-08-21 18:16:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-08-21 18:16:49,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:49,729 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 8, 7, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:49,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 18:16:49,730 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:49,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:49,730 INFO L82 PathProgramCache]: Analyzing trace with hash 400238009, now seen corresponding path program 15 times [2020-08-21 18:16:49,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:49,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478182038] [2020-08-21 18:16:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:16:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:16:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:16:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:16:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-21 18:16:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:16:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:16:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:16:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:16:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2692 backedges. 833 proven. 226 refuted. 0 times theorem prover too weak. 1633 trivial. 0 not checked. [2020-08-21 18:16:49,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478182038] [2020-08-21 18:16:49,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:49,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:16:49,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940503369] [2020-08-21 18:16:49,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:16:49,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:49,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:16:49,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:16:49,988 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand 13 states. [2020-08-21 18:16:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:50,441 INFO L93 Difference]: Finished difference Result 356 states and 421 transitions. [2020-08-21 18:16:50,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 18:16:50,442 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 233 [2020-08-21 18:16:50,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:50,444 INFO L225 Difference]: With dead ends: 356 [2020-08-21 18:16:50,444 INFO L226 Difference]: Without dead ends: 203 [2020-08-21 18:16:50,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=509, Unknown=0, NotChecked=0, Total=756 [2020-08-21 18:16:50,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-08-21 18:16:50,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2020-08-21 18:16:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-21 18:16:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2020-08-21 18:16:50,472 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 233 [2020-08-21 18:16:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:50,473 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2020-08-21 18:16:50,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:16:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2020-08-21 18:16:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-21 18:16:50,476 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:50,476 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 8, 7, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:50,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-21 18:16:50,477 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1039853412, now seen corresponding path program 16 times [2020-08-21 18:16:50,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:50,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901484121] [2020-08-21 18:16:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:16:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:16:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:16:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:16:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:16:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:16:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:16:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:16:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:16:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:16:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2885 backedges. 116 proven. 1050 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2020-08-21 18:16:50,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901484121] [2020-08-21 18:16:50,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:50,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:16:50,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352674369] [2020-08-21 18:16:50,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:16:50,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:50,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:16:50,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:16:50,796 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 16 states. [2020-08-21 18:16:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:51,938 INFO L93 Difference]: Finished difference Result 398 states and 480 transitions. [2020-08-21 18:16:51,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 18:16:51,943 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 240 [2020-08-21 18:16:51,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:51,946 INFO L225 Difference]: With dead ends: 398 [2020-08-21 18:16:51,946 INFO L226 Difference]: Without dead ends: 306 [2020-08-21 18:16:51,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=2403, Unknown=0, NotChecked=0, Total=3306 [2020-08-21 18:16:51,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-21 18:16:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 267. [2020-08-21 18:16:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-21 18:16:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 318 transitions. [2020-08-21 18:16:51,994 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 318 transitions. Word has length 240 [2020-08-21 18:16:51,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:51,995 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 318 transitions. [2020-08-21 18:16:51,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:16:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 318 transitions. [2020-08-21 18:16:52,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-21 18:16:52,001 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:52,001 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 9, 8, 8, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:52,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-21 18:16:52,001 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:52,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:52,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1581346975, now seen corresponding path program 17 times [2020-08-21 18:16:52,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:52,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991693301] [2020-08-21 18:16:52,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:16:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:16:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:16:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:16:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:16:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:16:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:16:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:16:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:16:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 18:16:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:16:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:16:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:16:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:16:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 937 proven. 633 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2020-08-21 18:16:52,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991693301] [2020-08-21 18:16:52,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:52,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 18:16:52,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440392585] [2020-08-21 18:16:52,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 18:16:52,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:52,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 18:16:52,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:16:52,324 INFO L87 Difference]: Start difference. First operand 267 states and 318 transitions. Second operand 15 states. [2020-08-21 18:16:53,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:53,008 INFO L93 Difference]: Finished difference Result 461 states and 558 transitions. [2020-08-21 18:16:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 18:16:53,009 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 271 [2020-08-21 18:16:53,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:53,011 INFO L225 Difference]: With dead ends: 461 [2020-08-21 18:16:53,011 INFO L226 Difference]: Without dead ends: 286 [2020-08-21 18:16:53,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=396, Invalid=794, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 18:16:53,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-21 18:16:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 239. [2020-08-21 18:16:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-21 18:16:53,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 278 transitions. [2020-08-21 18:16:53,045 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 278 transitions. Word has length 271 [2020-08-21 18:16:53,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:53,046 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 278 transitions. [2020-08-21 18:16:53,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 18:16:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 278 transitions. [2020-08-21 18:16:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-08-21 18:16:53,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:53,049 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 9, 8, 8, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:53,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-21 18:16:53,049 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:53,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:53,050 INFO L82 PathProgramCache]: Analyzing trace with hash -2078560834, now seen corresponding path program 18 times [2020-08-21 18:16:53,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:53,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289297387] [2020-08-21 18:16:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:16:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:16:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:16:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:16:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:16:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:16:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:16:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:16:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:16:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:16:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:16:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:16:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:16:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:16:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:16:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4014 backedges. 429 proven. 1177 refuted. 0 times theorem prover too weak. 2408 trivial. 0 not checked. [2020-08-21 18:16:53,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289297387] [2020-08-21 18:16:53,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:53,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 18:16:53,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246007301] [2020-08-21 18:16:53,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 18:16:53,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:53,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 18:16:53,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-08-21 18:16:53,442 INFO L87 Difference]: Start difference. First operand 239 states and 278 transitions. Second operand 17 states. [2020-08-21 18:16:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:54,150 INFO L93 Difference]: Finished difference Result 312 states and 355 transitions. [2020-08-21 18:16:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 18:16:54,152 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 278 [2020-08-21 18:16:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:54,154 INFO L225 Difference]: With dead ends: 312 [2020-08-21 18:16:54,155 INFO L226 Difference]: Without dead ends: 310 [2020-08-21 18:16:54,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2020-08-21 18:16:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-21 18:16:54,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 295. [2020-08-21 18:16:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-21 18:16:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 336 transitions. [2020-08-21 18:16:54,192 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 336 transitions. Word has length 278 [2020-08-21 18:16:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:54,193 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 336 transitions. [2020-08-21 18:16:54,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 18:16:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 336 transitions. [2020-08-21 18:16:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-08-21 18:16:54,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:54,195 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 9, 8, 8, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:54,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-21 18:16:54,196 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:54,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:54,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1263938933, now seen corresponding path program 19 times [2020-08-21 18:16:54,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:54,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720282232] [2020-08-21 18:16:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:16:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:16:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:16:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:16:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:16:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:16:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:16:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:16:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:16:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:16:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:16:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:16:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:16:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:16:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:16:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:16:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 150 proven. 1638 refuted. 0 times theorem prover too weak. 2462 trivial. 0 not checked. [2020-08-21 18:16:54,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720282232] [2020-08-21 18:16:54,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:54,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 18:16:54,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665610236] [2020-08-21 18:16:54,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 18:16:54,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:54,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 18:16:54,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:16:54,614 INFO L87 Difference]: Start difference. First operand 295 states and 336 transitions. Second operand 18 states. [2020-08-21 18:16:55,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:55,976 INFO L93 Difference]: Finished difference Result 501 states and 595 transitions. [2020-08-21 18:16:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-21 18:16:55,982 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 285 [2020-08-21 18:16:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:55,986 INFO L225 Difference]: With dead ends: 501 [2020-08-21 18:16:55,986 INFO L226 Difference]: Without dead ends: 410 [2020-08-21 18:16:55,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1240, Invalid=3182, Unknown=0, NotChecked=0, Total=4422 [2020-08-21 18:16:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-08-21 18:16:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 316. [2020-08-21 18:16:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-21 18:16:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 365 transitions. [2020-08-21 18:16:56,036 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 365 transitions. Word has length 285 [2020-08-21 18:16:56,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:56,036 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 365 transitions. [2020-08-21 18:16:56,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 18:16:56,037 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 365 transitions. [2020-08-21 18:16:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-08-21 18:16:56,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:56,039 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 10, 9, 9, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:56,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-21 18:16:56,040 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:56,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1910860175, now seen corresponding path program 20 times [2020-08-21 18:16:56,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:56,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842801163] [2020-08-21 18:16:56,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:16:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:16:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:16:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:16:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:16:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:16:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:16:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:16:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:16:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:16:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:16:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:16:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:16:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:16:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:16:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-21 18:16:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:16:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:16:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:16:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:16:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:16:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5603 backedges. 1239 proven. 1145 refuted. 0 times theorem prover too weak. 3219 trivial. 0 not checked. [2020-08-21 18:16:56,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842801163] [2020-08-21 18:16:56,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:56,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 18:16:56,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631279501] [2020-08-21 18:16:56,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 18:16:56,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:56,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 18:16:56,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-08-21 18:16:56,428 INFO L87 Difference]: Start difference. First operand 316 states and 365 transitions. Second operand 17 states. [2020-08-21 18:16:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:57,285 INFO L93 Difference]: Finished difference Result 538 states and 640 transitions. [2020-08-21 18:16:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 18:16:57,285 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 323 [2020-08-21 18:16:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:57,288 INFO L225 Difference]: With dead ends: 538 [2020-08-21 18:16:57,288 INFO L226 Difference]: Without dead ends: 340 [2020-08-21 18:16:57,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=633, Invalid=1259, Unknown=0, NotChecked=0, Total=1892 [2020-08-21 18:16:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-21 18:16:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 334. [2020-08-21 18:16:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-21 18:16:57,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 387 transitions. [2020-08-21 18:16:57,340 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 387 transitions. Word has length 323 [2020-08-21 18:16:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:57,341 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 387 transitions. [2020-08-21 18:16:57,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 18:16:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 387 transitions. [2020-08-21 18:16:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-21 18:16:57,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:57,345 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 10, 9, 9, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:57,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-21 18:16:57,347 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:57,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:57,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1089690308, now seen corresponding path program 21 times [2020-08-21 18:16:57,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:57,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984685412] [2020-08-21 18:16:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:16:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:16:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:16:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:16:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:16:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:16:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:16:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:16:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:16:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:16:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:16:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:16:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:16:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:16:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:16:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:16:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:16:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:16:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:16:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:16:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:16:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:16:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5882 backedges. 443 proven. 2023 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2020-08-21 18:16:57,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984685412] [2020-08-21 18:16:57,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:57,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 18:16:57,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955075898] [2020-08-21 18:16:57,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 18:16:57,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:57,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 18:16:57,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:16:57,813 INFO L87 Difference]: Start difference. First operand 334 states and 387 transitions. Second operand 15 states. [2020-08-21 18:16:58,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:16:58,750 INFO L93 Difference]: Finished difference Result 490 states and 557 transitions. [2020-08-21 18:16:58,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 18:16:58,751 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 330 [2020-08-21 18:16:58,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:16:58,755 INFO L225 Difference]: With dead ends: 490 [2020-08-21 18:16:58,755 INFO L226 Difference]: Without dead ends: 488 [2020-08-21 18:16:58,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=1308, Unknown=0, NotChecked=0, Total=1806 [2020-08-21 18:16:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-21 18:16:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 443. [2020-08-21 18:16:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-21 18:16:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 510 transitions. [2020-08-21 18:16:58,813 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 510 transitions. Word has length 330 [2020-08-21 18:16:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:16:58,814 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 510 transitions. [2020-08-21 18:16:58,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 18:16:58,814 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 510 transitions. [2020-08-21 18:16:58,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-08-21 18:16:58,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:16:58,818 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:16:58,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-21 18:16:58,818 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:16:58,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:16:58,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1713724203, now seen corresponding path program 22 times [2020-08-21 18:16:58,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:16:58,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285409659] [2020-08-21 18:16:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:16:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:16:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:16:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:16:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:16:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:16:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:16:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:16:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:16:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:16:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:16:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:16:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:16:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:16:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:16:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:16:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:16:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:16:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:16:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:16:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:16:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:16:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:16:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:16:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:16:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:16:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:16:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:16:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:16:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:16:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:16:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:16:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:16:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:16:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:16:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:16:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:16:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:16:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:16:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:16:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:16:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-21 18:16:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-21 18:16:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-21 18:16:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-21 18:16:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-21 18:16:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-21 18:16:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:16:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7781 backedges. 455 proven. 2337 refuted. 0 times theorem prover too weak. 4989 trivial. 0 not checked. [2020-08-21 18:16:59,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285409659] [2020-08-21 18:16:59,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:16:59,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 18:16:59,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058533557] [2020-08-21 18:16:59,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 18:16:59,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:16:59,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 18:16:59,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:16:59,325 INFO L87 Difference]: Start difference. First operand 443 states and 510 transitions. Second operand 18 states. [2020-08-21 18:17:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:00,014 INFO L93 Difference]: Finished difference Result 503 states and 584 transitions. [2020-08-21 18:17:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 18:17:00,017 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 375 [2020-08-21 18:17:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:00,021 INFO L225 Difference]: With dead ends: 503 [2020-08-21 18:17:00,021 INFO L226 Difference]: Without dead ends: 501 [2020-08-21 18:17:00,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 18:17:00,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-08-21 18:17:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 457. [2020-08-21 18:17:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-21 18:17:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 526 transitions. [2020-08-21 18:17:00,078 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 526 transitions. Word has length 375 [2020-08-21 18:17:00,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:00,079 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 526 transitions. [2020-08-21 18:17:00,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 18:17:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 526 transitions. [2020-08-21 18:17:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-08-21 18:17:00,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:00,082 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:00,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-21 18:17:00,083 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:00,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1934385026, now seen corresponding path program 23 times [2020-08-21 18:17:00,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:00,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765973544] [2020-08-21 18:17:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-21 18:17:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-21 18:17:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-21 18:17:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-21 18:17:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-21 18:17:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-21 18:17:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-08-21 18:17:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8110 backedges. 1646 proven. 1795 refuted. 0 times theorem prover too weak. 4669 trivial. 0 not checked. [2020-08-21 18:17:00,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765973544] [2020-08-21 18:17:00,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:00,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:17:00,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770808454] [2020-08-21 18:17:00,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:17:00,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:00,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:17:00,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:17:00,543 INFO L87 Difference]: Start difference. First operand 457 states and 526 transitions. Second operand 13 states. [2020-08-21 18:17:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:01,149 INFO L93 Difference]: Finished difference Result 947 states and 1112 transitions. [2020-08-21 18:17:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 18:17:01,150 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 382 [2020-08-21 18:17:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:01,154 INFO L225 Difference]: With dead ends: 947 [2020-08-21 18:17:01,154 INFO L226 Difference]: Without dead ends: 506 [2020-08-21 18:17:01,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=345, Invalid=711, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 18:17:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-21 18:17:01,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 503. [2020-08-21 18:17:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-21 18:17:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 595 transitions. [2020-08-21 18:17:01,220 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 595 transitions. Word has length 382 [2020-08-21 18:17:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:01,220 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 595 transitions. [2020-08-21 18:17:01,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:17:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 595 transitions. [2020-08-21 18:17:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-08-21 18:17:01,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:01,225 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 13, 12, 12, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:01,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-21 18:17:01,225 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:01,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:01,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1577141198, now seen corresponding path program 24 times [2020-08-21 18:17:01,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:01,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26333145] [2020-08-21 18:17:01,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-21 18:17:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-21 18:17:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-21 18:17:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-21 18:17:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-21 18:17:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-08-21 18:17:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-21 18:17:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 18:17:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-21 18:17:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-21 18:17:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-21 18:17:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-21 18:17:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-21 18:17:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-21 18:17:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-21 18:17:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-21 18:17:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-21 18:17:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-21 18:17:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-21 18:17:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11597 backedges. 3275 proven. 704 refuted. 0 times theorem prover too weak. 7618 trivial. 0 not checked. [2020-08-21 18:17:01,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26333145] [2020-08-21 18:17:01,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:01,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 18:17:01,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616931747] [2020-08-21 18:17:01,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:17:01,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:01,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:17:01,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:17:01,640 INFO L87 Difference]: Start difference. First operand 503 states and 595 transitions. Second operand 11 states. [2020-08-21 18:17:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:02,020 INFO L93 Difference]: Finished difference Result 702 states and 825 transitions. [2020-08-21 18:17:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 18:17:02,021 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 454 [2020-08-21 18:17:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:02,023 INFO L225 Difference]: With dead ends: 702 [2020-08-21 18:17:02,024 INFO L226 Difference]: Without dead ends: 412 [2020-08-21 18:17:02,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2020-08-21 18:17:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-21 18:17:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-21 18:17:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-21 18:17:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 473 transitions. [2020-08-21 18:17:02,079 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 473 transitions. Word has length 454 [2020-08-21 18:17:02,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:02,080 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 473 transitions. [2020-08-21 18:17:02,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:17:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 473 transitions. [2020-08-21 18:17:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-08-21 18:17:02,084 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:02,084 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 14, 13, 13, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:02,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-21 18:17:02,084 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:02,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:02,085 INFO L82 PathProgramCache]: Analyzing trace with hash 389126169, now seen corresponding path program 25 times [2020-08-21 18:17:02,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:02,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056462586] [2020-08-21 18:17:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-21 18:17:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 18:17:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-21 18:17:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-21 18:17:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-21 18:17:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-21 18:17:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-21 18:17:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-21 18:17:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-21 18:17:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-21 18:17:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-21 18:17:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-21 18:17:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-21 18:17:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-21 18:17:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-21 18:17:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-21 18:17:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-21 18:17:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14212 backedges. 3869 proven. 1294 refuted. 0 times theorem prover too weak. 9049 trivial. 0 not checked. [2020-08-21 18:17:02,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056462586] [2020-08-21 18:17:02,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:02,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:17:02,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143663235] [2020-08-21 18:17:02,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:17:02,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:02,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:17:02,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:17:02,583 INFO L87 Difference]: Start difference. First operand 412 states and 473 transitions. Second operand 12 states. [2020-08-21 18:17:03,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:03,039 INFO L93 Difference]: Finished difference Result 611 states and 701 transitions. [2020-08-21 18:17:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 18:17:03,041 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 499 [2020-08-21 18:17:03,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:03,043 INFO L225 Difference]: With dead ends: 611 [2020-08-21 18:17:03,044 INFO L226 Difference]: Without dead ends: 412 [2020-08-21 18:17:03,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=455, Unknown=0, NotChecked=0, Total=702 [2020-08-21 18:17:03,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-21 18:17:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-21 18:17:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-21 18:17:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 471 transitions. [2020-08-21 18:17:03,095 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 471 transitions. Word has length 499 [2020-08-21 18:17:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:03,096 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 471 transitions. [2020-08-21 18:17:03,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:17:03,096 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 471 transitions. [2020-08-21 18:17:03,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-08-21 18:17:03,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:03,101 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:03,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-21 18:17:03,101 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:03,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:03,102 INFO L82 PathProgramCache]: Analyzing trace with hash 206006162, now seen corresponding path program 26 times [2020-08-21 18:17:03,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:03,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568528829] [2020-08-21 18:17:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-21 18:17:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-21 18:17:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-21 18:17:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-21 18:17:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-21 18:17:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-21 18:17:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-21 18:17:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-21 18:17:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-21 18:17:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-21 18:17:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-08-21 18:17:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-08-21 18:17:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-21 18:17:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-21 18:17:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-21 18:17:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 18:17:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 17094 backedges. 4741 proven. 1771 refuted. 0 times theorem prover too weak. 10582 trivial. 0 not checked. [2020-08-21 18:17:03,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568528829] [2020-08-21 18:17:03,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:03,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 18:17:03,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280758019] [2020-08-21 18:17:03,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 18:17:03,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:03,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 18:17:03,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:17:03,669 INFO L87 Difference]: Start difference. First operand 412 states and 471 transitions. Second operand 19 states. [2020-08-21 18:17:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:05,050 INFO L93 Difference]: Finished difference Result 617 states and 706 transitions. [2020-08-21 18:17:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-21 18:17:05,051 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 544 [2020-08-21 18:17:05,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:05,054 INFO L225 Difference]: With dead ends: 617 [2020-08-21 18:17:05,054 INFO L226 Difference]: Without dead ends: 416 [2020-08-21 18:17:05,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=965, Invalid=1897, Unknown=0, NotChecked=0, Total=2862 [2020-08-21 18:17:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-08-21 18:17:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2020-08-21 18:17:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 18:17:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 474 transitions. [2020-08-21 18:17:05,112 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 474 transitions. Word has length 544 [2020-08-21 18:17:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:05,112 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 474 transitions. [2020-08-21 18:17:05,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 18:17:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 474 transitions. [2020-08-21 18:17:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-08-21 18:17:05,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:05,118 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 69, 69, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:05,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-21 18:17:05,118 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:05,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:05,119 INFO L82 PathProgramCache]: Analyzing trace with hash 22704138, now seen corresponding path program 27 times [2020-08-21 18:17:05,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:05,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002173432] [2020-08-21 18:17:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-21 18:17:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-21 18:17:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-21 18:17:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-21 18:17:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-21 18:17:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-21 18:17:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-21 18:17:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-21 18:17:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-21 18:17:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 18:17:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18075 backedges. 5945 proven. 607 refuted. 0 times theorem prover too weak. 11523 trivial. 0 not checked. [2020-08-21 18:17:05,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002173432] [2020-08-21 18:17:05,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:05,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 18:17:05,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954116182] [2020-08-21 18:17:05,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 18:17:05,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:05,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 18:17:05,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:17:05,673 INFO L87 Difference]: Start difference. First operand 416 states and 474 transitions. Second operand 15 states. [2020-08-21 18:17:06,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:06,377 INFO L93 Difference]: Finished difference Result 618 states and 703 transitions. [2020-08-21 18:17:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 18:17:06,378 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 558 [2020-08-21 18:17:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:06,381 INFO L225 Difference]: With dead ends: 618 [2020-08-21 18:17:06,381 INFO L226 Difference]: Without dead ends: 417 [2020-08-21 18:17:06,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=341, Invalid=715, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 18:17:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-21 18:17:06,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-21 18:17:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 18:17:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 473 transitions. [2020-08-21 18:17:06,433 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 473 transitions. Word has length 558 [2020-08-21 18:17:06,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:06,434 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 473 transitions. [2020-08-21 18:17:06,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 18:17:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 473 transitions. [2020-08-21 18:17:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-08-21 18:17:06,438 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:06,439 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 70, 70, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:06,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-21 18:17:06,439 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:06,440 INFO L82 PathProgramCache]: Analyzing trace with hash -289471297, now seen corresponding path program 28 times [2020-08-21 18:17:06,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:06,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145985928] [2020-08-21 18:17:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 18:17:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 18:17:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-21 18:17:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 18:17:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-21 18:17:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-21 18:17:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 18:17:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-21 18:17:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-21 18:17:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 18:17:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:06,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 18:17:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 18576 backedges. 5565 proven. 1561 refuted. 0 times theorem prover too weak. 11450 trivial. 0 not checked. [2020-08-21 18:17:07,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145985928] [2020-08-21 18:17:07,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:07,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 18:17:07,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535458571] [2020-08-21 18:17:07,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 18:17:07,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:07,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 18:17:07,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-08-21 18:17:07,029 INFO L87 Difference]: Start difference. First operand 416 states and 473 transitions. Second operand 17 states. [2020-08-21 18:17:07,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:07,922 INFO L93 Difference]: Finished difference Result 618 states and 701 transitions. [2020-08-21 18:17:07,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 18:17:07,923 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 565 [2020-08-21 18:17:07,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:07,927 INFO L225 Difference]: With dead ends: 618 [2020-08-21 18:17:07,927 INFO L226 Difference]: Without dead ends: 417 [2020-08-21 18:17:07,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=568, Invalid=1154, Unknown=0, NotChecked=0, Total=1722 [2020-08-21 18:17:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-21 18:17:07,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-21 18:17:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 18:17:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 472 transitions. [2020-08-21 18:17:07,990 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 472 transitions. Word has length 565 [2020-08-21 18:17:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:07,991 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 472 transitions. [2020-08-21 18:17:07,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 18:17:07,991 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 472 transitions. [2020-08-21 18:17:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-21 18:17:07,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:07,997 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 71, 71, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:07,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-21 18:17:07,997 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:07,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:07,997 INFO L82 PathProgramCache]: Analyzing trace with hash 126799646, now seen corresponding path program 29 times [2020-08-21 18:17:07,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:07,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364342979] [2020-08-21 18:17:07,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 18:17:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 18:17:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 18:17:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 18:17:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 18:17:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-21 18:17:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 18:17:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 18:17:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-21 18:17:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 18:17:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 18:17:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 18:17:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 19084 backedges. 4945 proven. 2699 refuted. 0 times theorem prover too weak. 11440 trivial. 0 not checked. [2020-08-21 18:17:08,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364342979] [2020-08-21 18:17:08,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:08,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 18:17:08,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641864565] [2020-08-21 18:17:08,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 18:17:08,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:08,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 18:17:08,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:17:08,652 INFO L87 Difference]: Start difference. First operand 416 states and 472 transitions. Second operand 19 states. [2020-08-21 18:17:09,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:09,855 INFO L93 Difference]: Finished difference Result 620 states and 702 transitions. [2020-08-21 18:17:09,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-21 18:17:09,856 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 572 [2020-08-21 18:17:09,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:09,859 INFO L225 Difference]: With dead ends: 620 [2020-08-21 18:17:09,859 INFO L226 Difference]: Without dead ends: 419 [2020-08-21 18:17:09,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=886, Invalid=1766, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 18:17:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-08-21 18:17:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 418. [2020-08-21 18:17:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-21 18:17:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 474 transitions. [2020-08-21 18:17:09,915 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 474 transitions. Word has length 572 [2020-08-21 18:17:09,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:09,915 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 474 transitions. [2020-08-21 18:17:09,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 18:17:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 474 transitions. [2020-08-21 18:17:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-08-21 18:17:09,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:09,922 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 72, 72, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:09,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-21 18:17:09,922 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:09,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:09,923 INFO L82 PathProgramCache]: Analyzing trace with hash -847775853, now seen corresponding path program 30 times [2020-08-21 18:17:09,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:09,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103192973] [2020-08-21 18:17:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 18:17:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 18:17:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 18:17:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 18:17:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 18:17:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 18:17:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 18:17:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 18:17:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 18:17:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 18:17:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 18:17:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 18:17:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 18:17:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19599 backedges. 2008 proven. 5249 refuted. 0 times theorem prover too weak. 12342 trivial. 0 not checked. [2020-08-21 18:17:10,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103192973] [2020-08-21 18:17:10,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:10,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-21 18:17:10,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239640722] [2020-08-21 18:17:10,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-21 18:17:10,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:10,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-21 18:17:10,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-08-21 18:17:10,605 INFO L87 Difference]: Start difference. First operand 418 states and 474 transitions. Second operand 20 states. [2020-08-21 18:17:11,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:11,495 INFO L93 Difference]: Finished difference Result 504 states and 565 transitions. [2020-08-21 18:17:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 18:17:11,496 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 579 [2020-08-21 18:17:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:11,501 INFO L225 Difference]: With dead ends: 504 [2020-08-21 18:17:11,501 INFO L226 Difference]: Without dead ends: 502 [2020-08-21 18:17:11,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 18:17:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-21 18:17:11,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 478. [2020-08-21 18:17:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-21 18:17:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 538 transitions. [2020-08-21 18:17:11,598 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 538 transitions. Word has length 579 [2020-08-21 18:17:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:11,598 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 538 transitions. [2020-08-21 18:17:11,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-21 18:17:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 538 transitions. [2020-08-21 18:17:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-08-21 18:17:11,603 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:11,604 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 73, 73, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:11,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-21 18:17:11,604 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:11,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:11,605 INFO L82 PathProgramCache]: Analyzing trace with hash 267632406, now seen corresponding path program 31 times [2020-08-21 18:17:11,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:11,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31363587] [2020-08-21 18:17:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 18:17:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 18:17:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 18:17:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 18:17:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 18:17:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 18:17:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 18:17:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 18:17:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 18:17:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 18:17:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 18:17:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 18:17:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 18:17:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 18:17:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 20121 backedges. 4227 proven. 4030 refuted. 0 times theorem prover too weak. 11864 trivial. 0 not checked. [2020-08-21 18:17:12,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31363587] [2020-08-21 18:17:12,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:12,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-21 18:17:12,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854377580] [2020-08-21 18:17:12,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-21 18:17:12,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:12,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-21 18:17:12,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-08-21 18:17:12,373 INFO L87 Difference]: Start difference. First operand 478 states and 538 transitions. Second operand 21 states. [2020-08-21 18:17:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:14,057 INFO L93 Difference]: Finished difference Result 714 states and 810 transitions. [2020-08-21 18:17:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 18:17:14,057 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 586 [2020-08-21 18:17:14,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:14,060 INFO L225 Difference]: With dead ends: 714 [2020-08-21 18:17:14,060 INFO L226 Difference]: Without dead ends: 479 [2020-08-21 18:17:14,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1311, Invalid=2595, Unknown=0, NotChecked=0, Total=3906 [2020-08-21 18:17:14,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-08-21 18:17:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 478. [2020-08-21 18:17:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-21 18:17:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 536 transitions. [2020-08-21 18:17:14,118 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 536 transitions. Word has length 586 [2020-08-21 18:17:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:14,119 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 536 transitions. [2020-08-21 18:17:14,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-21 18:17:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 536 transitions. [2020-08-21 18:17:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2020-08-21 18:17:14,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:14,124 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 74, 74, 74, 74, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:14,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-21 18:17:14,125 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:14,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1197037185, now seen corresponding path program 32 times [2020-08-21 18:17:14,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:14,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039530254] [2020-08-21 18:17:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 18:17:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 18:17:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 18:17:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 18:17:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 18:17:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 18:17:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 18:17:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 18:17:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 18:17:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 18:17:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 18:17:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 18:17:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 18:17:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 18:17:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 18:17:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 20650 backedges. 2012 proven. 5637 refuted. 0 times theorem prover too weak. 13001 trivial. 0 not checked. [2020-08-21 18:17:15,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039530254] [2020-08-21 18:17:15,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:15,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-21 18:17:15,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128418128] [2020-08-21 18:17:15,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-21 18:17:15,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:15,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-21 18:17:15,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-08-21 18:17:15,003 INFO L87 Difference]: Start difference. First operand 478 states and 536 transitions. Second operand 21 states. [2020-08-21 18:17:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:15,811 INFO L93 Difference]: Finished difference Result 537 states and 603 transitions. [2020-08-21 18:17:15,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 18:17:15,811 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 593 [2020-08-21 18:17:15,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:15,816 INFO L225 Difference]: With dead ends: 537 [2020-08-21 18:17:15,816 INFO L226 Difference]: Without dead ends: 535 [2020-08-21 18:17:15,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=409, Invalid=1151, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 18:17:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-08-21 18:17:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 505. [2020-08-21 18:17:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-08-21 18:17:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 570 transitions. [2020-08-21 18:17:15,875 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 570 transitions. Word has length 593 [2020-08-21 18:17:15,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:15,875 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 570 transitions. [2020-08-21 18:17:15,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-21 18:17:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 570 transitions. [2020-08-21 18:17:15,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-08-21 18:17:15,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:15,881 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 76, 75, 75, 75, 75, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:15,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-21 18:17:15,882 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:15,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:15,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1218530218, now seen corresponding path program 33 times [2020-08-21 18:17:15,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:15,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224264852] [2020-08-21 18:17:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 18:17:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 18:17:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 18:17:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 18:17:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 18:17:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 18:17:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 18:17:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 18:17:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 18:17:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 18:17:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 18:17:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 18:17:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 18:17:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 18:17:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 18:17:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-21 18:17:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 21186 backedges. 342 proven. 8400 refuted. 0 times theorem prover too weak. 12444 trivial. 0 not checked. [2020-08-21 18:17:16,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224264852] [2020-08-21 18:17:16,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:16,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-21 18:17:16,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073229574] [2020-08-21 18:17:16,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-21 18:17:16,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:16,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-21 18:17:16,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-08-21 18:17:16,721 INFO L87 Difference]: Start difference. First operand 505 states and 570 transitions. Second operand 24 states. [2020-08-21 18:17:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:19,821 INFO L93 Difference]: Finished difference Result 898 states and 1049 transitions. [2020-08-21 18:17:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-08-21 18:17:19,822 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 600 [2020-08-21 18:17:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:19,827 INFO L225 Difference]: With dead ends: 898 [2020-08-21 18:17:19,827 INFO L226 Difference]: Without dead ends: 631 [2020-08-21 18:17:19,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5052 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3553, Invalid=8879, Unknown=0, NotChecked=0, Total=12432 [2020-08-21 18:17:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-21 18:17:19,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-21 18:17:19,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-21 18:17:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 730 transitions. [2020-08-21 18:17:19,896 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 730 transitions. Word has length 600 [2020-08-21 18:17:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:19,897 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 730 transitions. [2020-08-21 18:17:19,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-21 18:17:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 730 transitions. [2020-08-21 18:17:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-08-21 18:17:19,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:19,905 INFO L422 BasicCegarLoop]: trace histogram [110, 110, 110, 109, 109, 109, 109, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:19,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-21 18:17:19,906 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:19,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:19,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1731219376, now seen corresponding path program 34 times [2020-08-21 18:17:19,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:19,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644126284] [2020-08-21 18:17:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 18:17:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 18:17:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 18:17:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 18:17:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 18:17:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 18:17:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 18:17:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 18:17:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 18:17:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 18:17:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 18:17:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 18:17:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 18:17:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 18:17:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 18:17:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-08-21 18:17:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-21 18:17:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-21 18:17:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-21 18:17:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-21 18:17:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-08-21 18:17:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-21 18:17:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-21 18:17:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-21 18:17:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-21 18:17:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-21 18:17:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-08-21 18:17:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-21 18:17:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-21 18:17:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-21 18:17:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-21 18:17:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-21 18:17:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-21 18:17:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-08-21 18:17:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-21 18:17:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-21 18:17:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-21 18:17:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-21 18:17:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-21 18:17:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-21 18:17:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-21 18:17:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-08-21 18:17:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-21 18:17:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-21 18:17:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-21 18:17:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-21 18:17:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-21 18:17:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-21 18:17:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-21 18:17:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:20,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-21 18:17:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 44431 backedges. 11950 proven. 5563 refuted. 0 times theorem prover too weak. 26918 trivial. 0 not checked. [2020-08-21 18:17:21,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644126284] [2020-08-21 18:17:21,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:21,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-21 18:17:21,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977459961] [2020-08-21 18:17:21,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-21 18:17:21,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:21,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-21 18:17:21,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-08-21 18:17:21,055 INFO L87 Difference]: Start difference. First operand 628 states and 730 transitions. Second operand 23 states. [2020-08-21 18:17:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:23,254 INFO L93 Difference]: Finished difference Result 923 states and 1077 transitions. [2020-08-21 18:17:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-21 18:17:23,255 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 856 [2020-08-21 18:17:23,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:23,260 INFO L225 Difference]: With dead ends: 923 [2020-08-21 18:17:23,260 INFO L226 Difference]: Without dead ends: 631 [2020-08-21 18:17:23,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1873, Invalid=3677, Unknown=0, NotChecked=0, Total=5550 [2020-08-21 18:17:23,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-21 18:17:23,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-21 18:17:23,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-21 18:17:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 728 transitions. [2020-08-21 18:17:23,340 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 728 transitions. Word has length 856 [2020-08-21 18:17:23,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:23,341 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 728 transitions. [2020-08-21 18:17:23,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-21 18:17:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 728 transitions. [2020-08-21 18:17:23,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-08-21 18:17:23,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:23,351 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 111, 110, 110, 110, 110, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:23,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-08-21 18:17:23,351 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:23,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:23,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2044024613, now seen corresponding path program 35 times [2020-08-21 18:17:23,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:23,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678156371] [2020-08-21 18:17:23,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 18:17:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 18:17:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 18:17:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 18:17:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 18:17:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 18:17:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 18:17:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 18:17:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 18:17:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 18:17:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 18:17:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 18:17:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 18:17:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 18:17:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 18:17:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-21 18:17:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-21 18:17:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-21 18:17:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-21 18:17:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-21 18:17:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-21 18:17:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-21 18:17:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-21 18:17:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-21 18:17:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-21 18:17:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-21 18:17:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-21 18:17:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-21 18:17:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-21 18:17:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-21 18:17:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-21 18:17:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-21 18:17:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-21 18:17:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-21 18:17:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-21 18:17:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-21 18:17:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-21 18:17:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-21 18:17:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-21 18:17:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-21 18:17:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-21 18:17:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-21 18:17:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-21 18:17:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-21 18:17:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-21 18:17:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-21 18:17:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-21 18:17:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-21 18:17:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-21 18:17:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-21 18:17:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-21 18:17:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 45217 backedges. 15327 proven. 1346 refuted. 0 times theorem prover too weak. 28544 trivial. 0 not checked. [2020-08-21 18:17:24,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678156371] [2020-08-21 18:17:24,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:24,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 18:17:24,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267510291] [2020-08-21 18:17:24,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 18:17:24,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:24,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 18:17:24,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-08-21 18:17:24,318 INFO L87 Difference]: Start difference. First operand 628 states and 728 transitions. Second operand 17 states. [2020-08-21 18:17:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:25,101 INFO L93 Difference]: Finished difference Result 1033 states and 1215 transitions. [2020-08-21 18:17:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 18:17:25,102 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 863 [2020-08-21 18:17:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:25,107 INFO L225 Difference]: With dead ends: 1033 [2020-08-21 18:17:25,107 INFO L226 Difference]: Without dead ends: 629 [2020-08-21 18:17:25,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=471, Invalid=1011, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 18:17:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-21 18:17:25,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-21 18:17:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-21 18:17:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 726 transitions. [2020-08-21 18:17:25,195 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 726 transitions. Word has length 863 [2020-08-21 18:17:25,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:25,195 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 726 transitions. [2020-08-21 18:17:25,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 18:17:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 726 transitions. [2020-08-21 18:17:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2020-08-21 18:17:25,204 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:25,204 INFO L422 BasicCegarLoop]: trace histogram [112, 112, 112, 111, 111, 111, 111, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:25,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-08-21 18:17:25,204 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:25,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2034609596, now seen corresponding path program 36 times [2020-08-21 18:17:25,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:25,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117666240] [2020-08-21 18:17:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 18:17:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 18:17:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 18:17:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 18:17:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 18:17:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 18:17:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 18:17:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 18:17:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 18:17:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 18:17:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 18:17:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 18:17:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 18:17:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 18:17:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 18:17:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-21 18:17:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-21 18:17:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-21 18:17:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-21 18:17:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-21 18:17:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-21 18:17:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-21 18:17:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-21 18:17:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-21 18:17:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-21 18:17:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-21 18:17:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-21 18:17:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-21 18:17:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-21 18:17:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-21 18:17:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-21 18:17:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-21 18:17:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-21 18:17:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-21 18:17:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-21 18:17:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-21 18:17:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-21 18:17:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-21 18:17:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-21 18:17:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-21 18:17:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-21 18:17:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-21 18:17:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-21 18:17:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-21 18:17:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-21 18:17:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-21 18:17:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-21 18:17:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-21 18:17:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-21 18:17:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-21 18:17:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-21 18:17:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-21 18:17:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 14226 proven. 3289 refuted. 0 times theorem prover too weak. 28495 trivial. 0 not checked. [2020-08-21 18:17:26,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117666240] [2020-08-21 18:17:26,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:26,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 18:17:26,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601267806] [2020-08-21 18:17:26,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 18:17:26,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:26,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 18:17:26,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:17:26,400 INFO L87 Difference]: Start difference. First operand 628 states and 726 transitions. Second operand 19 states. [2020-08-21 18:17:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:17:27,513 INFO L93 Difference]: Finished difference Result 891 states and 1028 transitions. [2020-08-21 18:17:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-21 18:17:27,514 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 870 [2020-08-21 18:17:27,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:17:27,519 INFO L225 Difference]: With dead ends: 891 [2020-08-21 18:17:27,519 INFO L226 Difference]: Without dead ends: 629 [2020-08-21 18:17:27,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=774, Invalid=1578, Unknown=0, NotChecked=0, Total=2352 [2020-08-21 18:17:27,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-21 18:17:27,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-21 18:17:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-21 18:17:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 725 transitions. [2020-08-21 18:17:27,597 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 725 transitions. Word has length 870 [2020-08-21 18:17:27,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:17:27,598 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 725 transitions. [2020-08-21 18:17:27,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 18:17:27,598 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 725 transitions. [2020-08-21 18:17:27,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2020-08-21 18:17:27,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:17:27,607 INFO L422 BasicCegarLoop]: trace histogram [113, 113, 113, 112, 112, 112, 112, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:17:27,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-08-21 18:17:27,608 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:17:27,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:17:27,608 INFO L82 PathProgramCache]: Analyzing trace with hash -206805743, now seen corresponding path program 37 times [2020-08-21 18:17:27,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:17:27,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401717582] [2020-08-21 18:17:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:17:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:17:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 18:17:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:17:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:17:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:17:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:17:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:17:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:17:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:17:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:17:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:17:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:17:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:17:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 18:17:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 18:17:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:17:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 18:17:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 18:17:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 18:17:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 18:17:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 18:17:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 18:17:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 18:17:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 18:17:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 18:17:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 18:17:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 18:17:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 18:17:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 18:17:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 18:17:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 18:17:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:17:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 18:17:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 18:17:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 18:17:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 18:17:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 18:17:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 18:17:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 18:17:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 18:17:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:17:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 18:17:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 18:17:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 18:17:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 18:17:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 18:17:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 18:17:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 18:17:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 18:17:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 18:17:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 18:17:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 18:17:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 18:17:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 18:17:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 18:17:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 18:17:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 18:17:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 18:17:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 18:17:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 18:17:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 18:17:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 18:17:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 18:17:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 18:17:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 18:17:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 18:17:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 18:17:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 18:17:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 18:17:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 18:17:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 18:17:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 18:17:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 18:17:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 18:17:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 18:17:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-21 18:17:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-21 18:17:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-21 18:17:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-21 18:17:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-21 18:17:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-21 18:17:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-21 18:17:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-21 18:17:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-21 18:17:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-21 18:17:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-21 18:17:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-21 18:17:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-21 18:17:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-08-21 18:17:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-21 18:17:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-21 18:17:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-21 18:17:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-21 18:17:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-21 18:17:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-21 18:17:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2020-08-21 18:17:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-21 18:17:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-21 18:17:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-21 18:17:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-21 18:17:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-21 18:17:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-21 18:17:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-21 18:17:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-08-21 18:17:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-21 18:17:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-21 18:17:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-21 18:17:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-21 18:17:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-21 18:17:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-21 18:17:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-21 18:17:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-21 18:17:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:28,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2020-08-21 18:17:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:17:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 46810 backedges. 12737 proven. 5535 refuted. 0 times theorem prover too weak. 28538 trivial. 0 not checked. [2020-08-21 18:17:29,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401717582] [2020-08-21 18:17:29,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:17:29,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-21 18:17:29,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255562459] [2020-08-21 18:17:29,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-21 18:17:29,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:17:29,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-21 18:17:29,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-21 18:17:29,077 INFO L87 Difference]: Start difference. First operand 628 states and 725 transitions. Second operand 21 states.