/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:25:04,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:25:04,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:25:04,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:25:04,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:25:04,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:25:04,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:25:04,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:25:04,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:25:04,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:25:04,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:25:04,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:25:04,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:25:04,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:25:04,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:25:04,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:25:04,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:25:04,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:25:04,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:25:04,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:25:04,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:25:04,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:25:04,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:25:04,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:25:04,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:25:04,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:25:04,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:25:04,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:25:04,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:25:04,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:25:04,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:25:04,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:25:04,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:25:04,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:25:04,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:25:04,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:25:04,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:25:04,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:25:04,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:25:04,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:25:04,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:25:04,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 06:25:04,851 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:25:04,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:25:04,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:25:04,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:25:04,853 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:25:04,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:25:04,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:25:04,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:25:04,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:25:04,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:25:04,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:25:04,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:25:04,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:25:04,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:25:04,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:25:04,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:25:04,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:25:04,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:25:04,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:25:04,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:25:04,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:25:04,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:25:04,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:25:04,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:25:04,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:25:04,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:25:04,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:25:04,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:25:04,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:25:04,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:25:05,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:25:05,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:25:05,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:25:05,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:25:05,188 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:25:05,189 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-08-22 06:25:05,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1068fc77c/7c33a2bd505241d085e2246250f201dd/FLAGf82cfb276 [2020-08-22 06:25:05,691 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:25:05,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-08-22 06:25:05,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1068fc77c/7c33a2bd505241d085e2246250f201dd/FLAGf82cfb276 [2020-08-22 06:25:06,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1068fc77c/7c33a2bd505241d085e2246250f201dd [2020-08-22 06:25:06,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:25:06,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:25:06,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:25:06,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:25:06,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:25:06,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:25:06" (1/1) ... [2020-08-22 06:25:06,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8ba199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06, skipping insertion in model container [2020-08-22 06:25:06,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:25:06" (1/1) ... [2020-08-22 06:25:06,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:25:06,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:25:06,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:25:06,288 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:25:06,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:25:06,313 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:25:06,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06 WrapperNode [2020-08-22 06:25:06,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:25:06,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:25:06,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:25:06,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:25:06,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06" (1/1) ... [2020-08-22 06:25:06,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06" (1/1) ... [2020-08-22 06:25:06,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06" (1/1) ... [2020-08-22 06:25:06,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06" (1/1) ... [2020-08-22 06:25:06,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06" (1/1) ... [2020-08-22 06:25:06,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06" (1/1) ... [2020-08-22 06:25:06,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06" (1/1) ... [2020-08-22 06:25:06,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:25:06,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:25:06,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:25:06,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:25:06,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:25:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:25:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:25:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:25:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:25:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:25:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:25:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:25:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:25:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:25:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:25:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:25:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:25:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:25:06,634 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:25:06,635 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 06:25:06,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:25:06 BoogieIcfgContainer [2020-08-22 06:25:06,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:25:06,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:25:06,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:25:06,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:25:06,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:25:06" (1/3) ... [2020-08-22 06:25:06,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db12161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:25:06, skipping insertion in model container [2020-08-22 06:25:06,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:06" (2/3) ... [2020-08-22 06:25:06,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db12161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:25:06, skipping insertion in model container [2020-08-22 06:25:06,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:25:06" (3/3) ... [2020-08-22 06:25:06,647 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-08-22 06:25:06,658 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:25:06,666 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:25:06,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:25:06,717 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:25:06,717 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:25:06,718 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:25:06,718 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:25:06,718 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:25:06,718 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:25:06,719 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:25:06,719 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:25:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-22 06:25:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 06:25:06,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:06,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:06,754 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:06,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:06,762 INFO L82 PathProgramCache]: Analyzing trace with hash 651998901, now seen corresponding path program 1 times [2020-08-22 06:25:06,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:06,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315251139] [2020-08-22 06:25:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:06,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:06,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315251139] [2020-08-22 06:25:07,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:25:07,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:25:07,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939183109] [2020-08-22 06:25:07,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:25:07,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:07,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:25:07,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:25:07,023 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-08-22 06:25:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:07,119 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-08-22 06:25:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:25:07,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-22 06:25:07,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:07,129 INFO L225 Difference]: With dead ends: 40 [2020-08-22 06:25:07,130 INFO L226 Difference]: Without dead ends: 21 [2020-08-22 06:25:07,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:25:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-22 06:25:07,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-08-22 06:25:07,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-22 06:25:07,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-08-22 06:25:07,172 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2020-08-22 06:25:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:07,173 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-08-22 06:25:07,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:25:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-08-22 06:25:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 06:25:07,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:07,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:07,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:25:07,175 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:07,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:07,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1822329080, now seen corresponding path program 1 times [2020-08-22 06:25:07,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:07,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422498440] [2020-08-22 06:25:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:07,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422498440] [2020-08-22 06:25:07,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:07,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 06:25:07,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184877965] [2020-08-22 06:25:07,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:25:07,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:07,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:25:07,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:25:07,282 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 6 states. [2020-08-22 06:25:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:07,351 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-08-22 06:25:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:25:07,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-22 06:25:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:07,355 INFO L225 Difference]: With dead ends: 30 [2020-08-22 06:25:07,355 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 06:25:07,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:25:07,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 06:25:07,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-08-22 06:25:07,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 06:25:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-22 06:25:07,365 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2020-08-22 06:25:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:07,366 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-22 06:25:07,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:25:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-22 06:25:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 06:25:07,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:07,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:07,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:25:07,368 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:07,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:07,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1510359893, now seen corresponding path program 2 times [2020-08-22 06:25:07,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:07,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426400778] [2020-08-22 06:25:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 06:25:07,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426400778] [2020-08-22 06:25:07,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:07,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 06:25:07,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159113289] [2020-08-22 06:25:07,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:25:07,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:07,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:25:07,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:25:07,527 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2020-08-22 06:25:07,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:07,592 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-08-22 06:25:07,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:25:07,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-08-22 06:25:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:07,594 INFO L225 Difference]: With dead ends: 37 [2020-08-22 06:25:07,594 INFO L226 Difference]: Without dead ends: 35 [2020-08-22 06:25:07,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:25:07,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-22 06:25:07,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-08-22 06:25:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-22 06:25:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-08-22 06:25:07,604 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 24 [2020-08-22 06:25:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:07,604 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-08-22 06:25:07,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:25:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-08-22 06:25:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 06:25:07,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:07,606 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:07,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:25:07,607 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:07,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:07,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1096709736, now seen corresponding path program 3 times [2020-08-22 06:25:07,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:07,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532656695] [2020-08-22 06:25:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 06:25:07,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532656695] [2020-08-22 06:25:07,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:07,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 06:25:07,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122493293] [2020-08-22 06:25:07,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:25:07,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:07,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:25:07,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:25:07,734 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 8 states. [2020-08-22 06:25:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:07,822 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-08-22 06:25:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 06:25:07,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-22 06:25:07,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:07,825 INFO L225 Difference]: With dead ends: 44 [2020-08-22 06:25:07,825 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 06:25:07,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:25:07,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 06:25:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-08-22 06:25:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 06:25:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-08-22 06:25:07,836 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 31 [2020-08-22 06:25:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:07,837 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-08-22 06:25:07,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:25:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-08-22 06:25:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 06:25:07,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:07,839 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:07,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:25:07,840 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:07,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:07,840 INFO L82 PathProgramCache]: Analyzing trace with hash 2024617973, now seen corresponding path program 4 times [2020-08-22 06:25:07,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:07,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764280685] [2020-08-22 06:25:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-22 06:25:07,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764280685] [2020-08-22 06:25:07,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:07,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 06:25:07,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574695403] [2020-08-22 06:25:07,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:25:07,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:07,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:25:07,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:25:07,970 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 9 states. [2020-08-22 06:25:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:08,045 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-08-22 06:25:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:25:08,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-08-22 06:25:08,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:08,047 INFO L225 Difference]: With dead ends: 51 [2020-08-22 06:25:08,047 INFO L226 Difference]: Without dead ends: 49 [2020-08-22 06:25:08,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:25:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-22 06:25:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-08-22 06:25:08,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 06:25:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2020-08-22 06:25:08,057 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 38 [2020-08-22 06:25:08,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:08,058 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2020-08-22 06:25:08,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:25:08,058 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-08-22 06:25:08,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 06:25:08,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:08,060 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:08,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:25:08,060 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:08,060 INFO L82 PathProgramCache]: Analyzing trace with hash 125373896, now seen corresponding path program 5 times [2020-08-22 06:25:08,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:08,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952589462] [2020-08-22 06:25:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 06:25:08,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952589462] [2020-08-22 06:25:08,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:08,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:25:08,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31989715] [2020-08-22 06:25:08,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:25:08,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:08,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:25:08,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:25:08,209 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 10 states. [2020-08-22 06:25:08,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:08,289 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-08-22 06:25:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 06:25:08,290 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-08-22 06:25:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:08,291 INFO L225 Difference]: With dead ends: 58 [2020-08-22 06:25:08,292 INFO L226 Difference]: Without dead ends: 56 [2020-08-22 06:25:08,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:25:08,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-22 06:25:08,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-08-22 06:25:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 06:25:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-08-22 06:25:08,302 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 45 [2020-08-22 06:25:08,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:08,303 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-08-22 06:25:08,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:25:08,303 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-08-22 06:25:08,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 06:25:08,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:08,305 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:08,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:25:08,305 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:08,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1195086997, now seen corresponding path program 6 times [2020-08-22 06:25:08,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:08,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053065289] [2020-08-22 06:25:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-22 06:25:08,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053065289] [2020-08-22 06:25:08,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:08,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 06:25:08,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390843753] [2020-08-22 06:25:08,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 06:25:08,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:08,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 06:25:08,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:25:08,478 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 11 states. [2020-08-22 06:25:08,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:08,577 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2020-08-22 06:25:08,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 06:25:08,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-08-22 06:25:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:08,579 INFO L225 Difference]: With dead ends: 65 [2020-08-22 06:25:08,579 INFO L226 Difference]: Without dead ends: 63 [2020-08-22 06:25:08,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:25:08,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-22 06:25:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-08-22 06:25:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-22 06:25:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-08-22 06:25:08,589 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 52 [2020-08-22 06:25:08,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:08,590 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-08-22 06:25:08,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 06:25:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-08-22 06:25:08,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 06:25:08,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:08,592 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:08,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:25:08,592 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:08,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:08,593 INFO L82 PathProgramCache]: Analyzing trace with hash 906444072, now seen corresponding path program 7 times [2020-08-22 06:25:08,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:08,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885303100] [2020-08-22 06:25:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 14 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-22 06:25:08,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885303100] [2020-08-22 06:25:08,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:08,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 06:25:08,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159756838] [2020-08-22 06:25:08,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:25:08,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:08,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:25:08,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:25:08,741 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 12 states. [2020-08-22 06:25:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:08,857 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-08-22 06:25:08,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 06:25:08,858 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-08-22 06:25:08,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:08,862 INFO L225 Difference]: With dead ends: 72 [2020-08-22 06:25:08,862 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 06:25:08,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:25:08,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 06:25:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-08-22 06:25:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 06:25:08,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2020-08-22 06:25:08,882 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 59 [2020-08-22 06:25:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:08,884 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2020-08-22 06:25:08,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:25:08,895 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2020-08-22 06:25:08,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 06:25:08,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:08,897 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:08,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:25:08,897 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:08,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:08,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2003085003, now seen corresponding path program 8 times [2020-08-22 06:25:08,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:08,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157757422] [2020-08-22 06:25:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 16 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-08-22 06:25:09,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157757422] [2020-08-22 06:25:09,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:09,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 06:25:09,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877629368] [2020-08-22 06:25:09,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 06:25:09,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:09,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 06:25:09,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:25:09,104 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 13 states. [2020-08-22 06:25:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:09,210 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-08-22 06:25:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 06:25:09,212 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-08-22 06:25:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:09,213 INFO L225 Difference]: With dead ends: 79 [2020-08-22 06:25:09,214 INFO L226 Difference]: Without dead ends: 77 [2020-08-22 06:25:09,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:25:09,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-22 06:25:09,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-22 06:25:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 06:25:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2020-08-22 06:25:09,232 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 66 [2020-08-22 06:25:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:09,233 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2020-08-22 06:25:09,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 06:25:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2020-08-22 06:25:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-22 06:25:09,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:09,237 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:09,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:25:09,238 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:09,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:09,238 INFO L82 PathProgramCache]: Analyzing trace with hash -824245112, now seen corresponding path program 9 times [2020-08-22 06:25:09,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:09,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163604395] [2020-08-22 06:25:09,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 18 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-22 06:25:09,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163604395] [2020-08-22 06:25:09,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:09,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 06:25:09,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859546676] [2020-08-22 06:25:09,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 06:25:09,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:09,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 06:25:09,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:25:09,464 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 14 states. [2020-08-22 06:25:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:09,592 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2020-08-22 06:25:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 06:25:09,592 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-08-22 06:25:09,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:09,594 INFO L225 Difference]: With dead ends: 86 [2020-08-22 06:25:09,594 INFO L226 Difference]: Without dead ends: 84 [2020-08-22 06:25:09,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-08-22 06:25:09,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-08-22 06:25:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-08-22 06:25:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-22 06:25:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2020-08-22 06:25:09,615 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 73 [2020-08-22 06:25:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:09,618 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2020-08-22 06:25:09,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 06:25:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2020-08-22 06:25:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-22 06:25:09,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:09,620 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:09,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:25:09,620 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:09,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1640593963, now seen corresponding path program 10 times [2020-08-22 06:25:09,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:09,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406719328] [2020-08-22 06:25:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 20 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-08-22 06:25:09,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406719328] [2020-08-22 06:25:09,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:09,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 06:25:09,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767875922] [2020-08-22 06:25:09,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 06:25:09,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:09,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 06:25:09,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-22 06:25:09,818 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 15 states. [2020-08-22 06:25:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:09,941 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2020-08-22 06:25:09,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 06:25:09,942 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-08-22 06:25:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:09,943 INFO L225 Difference]: With dead ends: 93 [2020-08-22 06:25:09,943 INFO L226 Difference]: Without dead ends: 91 [2020-08-22 06:25:09,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-22 06:25:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-22 06:25:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-08-22 06:25:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-22 06:25:09,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2020-08-22 06:25:09,962 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 80 [2020-08-22 06:25:09,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:09,963 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2020-08-22 06:25:09,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 06:25:09,963 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2020-08-22 06:25:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 06:25:09,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:09,970 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:09,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 06:25:09,971 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:09,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:09,971 INFO L82 PathProgramCache]: Analyzing trace with hash -447323160, now seen corresponding path program 11 times [2020-08-22 06:25:09,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:09,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118245275] [2020-08-22 06:25:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 22 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-22 06:25:10,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118245275] [2020-08-22 06:25:10,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:10,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 06:25:10,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479363194] [2020-08-22 06:25:10,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 06:25:10,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:10,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 06:25:10,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-08-22 06:25:10,177 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 16 states. [2020-08-22 06:25:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:10,307 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2020-08-22 06:25:10,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 06:25:10,308 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 87 [2020-08-22 06:25:10,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:10,309 INFO L225 Difference]: With dead ends: 100 [2020-08-22 06:25:10,309 INFO L226 Difference]: Without dead ends: 98 [2020-08-22 06:25:10,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-08-22 06:25:10,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-22 06:25:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-08-22 06:25:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-08-22 06:25:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-08-22 06:25:10,318 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 87 [2020-08-22 06:25:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:10,319 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-08-22 06:25:10,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 06:25:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-08-22 06:25:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 06:25:10,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:10,321 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:10,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 06:25:10,321 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:10,322 INFO L82 PathProgramCache]: Analyzing trace with hash 670505589, now seen corresponding path program 12 times [2020-08-22 06:25:10,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:10,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499053094] [2020-08-22 06:25:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 24 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-08-22 06:25:10,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499053094] [2020-08-22 06:25:10,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:10,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 06:25:10,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363703729] [2020-08-22 06:25:10,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 06:25:10,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:10,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 06:25:10,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-08-22 06:25:10,521 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 17 states. [2020-08-22 06:25:10,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:10,668 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2020-08-22 06:25:10,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 06:25:10,669 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 94 [2020-08-22 06:25:10,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:10,670 INFO L225 Difference]: With dead ends: 107 [2020-08-22 06:25:10,670 INFO L226 Difference]: Without dead ends: 105 [2020-08-22 06:25:10,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2020-08-22 06:25:10,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-22 06:25:10,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2020-08-22 06:25:10,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-22 06:25:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2020-08-22 06:25:10,687 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 94 [2020-08-22 06:25:10,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:10,688 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2020-08-22 06:25:10,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 06:25:10,689 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2020-08-22 06:25:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-22 06:25:10,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:10,690 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:10,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 06:25:10,691 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:10,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:10,691 INFO L82 PathProgramCache]: Analyzing trace with hash -29140152, now seen corresponding path program 13 times [2020-08-22 06:25:10,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:10,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28277751] [2020-08-22 06:25:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 26 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-22 06:25:10,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28277751] [2020-08-22 06:25:10,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:10,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 06:25:10,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556018930] [2020-08-22 06:25:10,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 06:25:10,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:10,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 06:25:10,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-08-22 06:25:10,979 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 18 states. [2020-08-22 06:25:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:11,149 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2020-08-22 06:25:11,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 06:25:11,150 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 101 [2020-08-22 06:25:11,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:11,152 INFO L225 Difference]: With dead ends: 114 [2020-08-22 06:25:11,152 INFO L226 Difference]: Without dead ends: 112 [2020-08-22 06:25:11,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2020-08-22 06:25:11,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-08-22 06:25:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-08-22 06:25:11,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 06:25:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2020-08-22 06:25:11,166 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 101 [2020-08-22 06:25:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:11,166 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2020-08-22 06:25:11,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 06:25:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2020-08-22 06:25:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 06:25:11,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:11,171 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:11,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 06:25:11,172 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:11,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1538844907, now seen corresponding path program 14 times [2020-08-22 06:25:11,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:11,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803522687] [2020-08-22 06:25:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 28 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-08-22 06:25:11,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803522687] [2020-08-22 06:25:11,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:11,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 06:25:11,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628688441] [2020-08-22 06:25:11,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 06:25:11,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:11,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 06:25:11,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-08-22 06:25:11,477 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 19 states. [2020-08-22 06:25:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:11,640 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2020-08-22 06:25:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 06:25:11,641 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 108 [2020-08-22 06:25:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:11,643 INFO L225 Difference]: With dead ends: 121 [2020-08-22 06:25:11,643 INFO L226 Difference]: Without dead ends: 119 [2020-08-22 06:25:11,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2020-08-22 06:25:11,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-22 06:25:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2020-08-22 06:25:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 06:25:11,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2020-08-22 06:25:11,650 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 108 [2020-08-22 06:25:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:11,650 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2020-08-22 06:25:11,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 06:25:11,651 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2020-08-22 06:25:11,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-22 06:25:11,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:11,652 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:11,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 06:25:11,652 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:11,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:11,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1878780584, now seen corresponding path program 15 times [2020-08-22 06:25:11,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:11,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782006000] [2020-08-22 06:25:11,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 30 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-08-22 06:25:11,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782006000] [2020-08-22 06:25:11,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:11,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-22 06:25:11,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147990838] [2020-08-22 06:25:11,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 06:25:11,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:11,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 06:25:11,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-08-22 06:25:11,926 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 20 states. [2020-08-22 06:25:12,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:12,100 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2020-08-22 06:25:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 06:25:12,101 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 115 [2020-08-22 06:25:12,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:12,104 INFO L225 Difference]: With dead ends: 128 [2020-08-22 06:25:12,104 INFO L226 Difference]: Without dead ends: 126 [2020-08-22 06:25:12,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=259, Unknown=0, NotChecked=0, Total=420 [2020-08-22 06:25:12,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-08-22 06:25:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-08-22 06:25:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-22 06:25:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2020-08-22 06:25:12,115 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 115 [2020-08-22 06:25:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:12,116 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2020-08-22 06:25:12,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 06:25:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2020-08-22 06:25:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-08-22 06:25:12,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:12,120 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:12,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 06:25:12,120 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:12,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:12,121 INFO L82 PathProgramCache]: Analyzing trace with hash 269515701, now seen corresponding path program 16 times [2020-08-22 06:25:12,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:12,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073796997] [2020-08-22 06:25:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 32 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-08-22 06:25:12,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073796997] [2020-08-22 06:25:12,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:12,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-22 06:25:12,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167542709] [2020-08-22 06:25:12,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 06:25:12,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:12,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 06:25:12,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-08-22 06:25:12,463 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 21 states. [2020-08-22 06:25:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:12,628 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2020-08-22 06:25:12,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 06:25:12,629 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 122 [2020-08-22 06:25:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:12,632 INFO L225 Difference]: With dead ends: 135 [2020-08-22 06:25:12,633 INFO L226 Difference]: Without dead ends: 133 [2020-08-22 06:25:12,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2020-08-22 06:25:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-22 06:25:12,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2020-08-22 06:25:12,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-22 06:25:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2020-08-22 06:25:12,642 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 122 [2020-08-22 06:25:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:12,645 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2020-08-22 06:25:12,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 06:25:12,645 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2020-08-22 06:25:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-22 06:25:12,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:12,646 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:12,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 06:25:12,647 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:12,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:12,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1034546680, now seen corresponding path program 17 times [2020-08-22 06:25:12,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:12,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765868645] [2020-08-22 06:25:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 34 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-08-22 06:25:12,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765868645] [2020-08-22 06:25:12,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:12,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 06:25:12,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698514171] [2020-08-22 06:25:12,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 06:25:12,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:12,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 06:25:12,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-08-22 06:25:12,992 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 22 states. [2020-08-22 06:25:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:13,188 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2020-08-22 06:25:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 06:25:13,188 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 129 [2020-08-22 06:25:13,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:13,189 INFO L225 Difference]: With dead ends: 142 [2020-08-22 06:25:13,190 INFO L226 Difference]: Without dead ends: 140 [2020-08-22 06:25:13,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-08-22 06:25:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-22 06:25:13,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-08-22 06:25:13,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-22 06:25:13,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2020-08-22 06:25:13,198 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 129 [2020-08-22 06:25:13,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:13,199 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2020-08-22 06:25:13,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 06:25:13,199 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2020-08-22 06:25:13,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 06:25:13,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:13,200 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:13,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 06:25:13,201 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:13,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:13,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2034415531, now seen corresponding path program 18 times [2020-08-22 06:25:13,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:13,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014360821] [2020-08-22 06:25:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 36 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-08-22 06:25:13,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014360821] [2020-08-22 06:25:13,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:13,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-22 06:25:13,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027470189] [2020-08-22 06:25:13,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 06:25:13,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:13,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 06:25:13,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-08-22 06:25:13,542 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 23 states. [2020-08-22 06:25:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:13,725 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2020-08-22 06:25:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 06:25:13,726 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 136 [2020-08-22 06:25:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:13,727 INFO L225 Difference]: With dead ends: 149 [2020-08-22 06:25:13,727 INFO L226 Difference]: Without dead ends: 147 [2020-08-22 06:25:13,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=334, Unknown=0, NotChecked=0, Total=552 [2020-08-22 06:25:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-22 06:25:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-08-22 06:25:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 06:25:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2020-08-22 06:25:13,734 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 136 [2020-08-22 06:25:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:13,735 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2020-08-22 06:25:13,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 06:25:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2020-08-22 06:25:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 06:25:13,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:13,737 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:13,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 06:25:13,737 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:13,737 INFO L82 PathProgramCache]: Analyzing trace with hash 245879144, now seen corresponding path program 19 times [2020-08-22 06:25:13,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:13,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806534704] [2020-08-22 06:25:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 38 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-08-22 06:25:14,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806534704] [2020-08-22 06:25:14,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:14,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-22 06:25:14,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873837149] [2020-08-22 06:25:14,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 06:25:14,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:14,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 06:25:14,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-08-22 06:25:14,180 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 24 states. [2020-08-22 06:25:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:14,423 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2020-08-22 06:25:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 06:25:14,425 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 143 [2020-08-22 06:25:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:14,446 INFO L225 Difference]: With dead ends: 156 [2020-08-22 06:25:14,446 INFO L226 Difference]: Without dead ends: 154 [2020-08-22 06:25:14,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2020-08-22 06:25:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-22 06:25:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2020-08-22 06:25:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-22 06:25:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2020-08-22 06:25:14,454 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 143 [2020-08-22 06:25:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:14,454 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2020-08-22 06:25:14,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 06:25:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2020-08-22 06:25:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 06:25:14,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:14,458 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:14,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 06:25:14,459 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:14,460 INFO L82 PathProgramCache]: Analyzing trace with hash -499680011, now seen corresponding path program 20 times [2020-08-22 06:25:14,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:14,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469183080] [2020-08-22 06:25:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 40 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-08-22 06:25:14,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469183080] [2020-08-22 06:25:14,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:14,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-22 06:25:14,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477403103] [2020-08-22 06:25:14,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-22 06:25:14,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:14,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-22 06:25:14,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-08-22 06:25:14,971 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 25 states. [2020-08-22 06:25:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:15,158 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2020-08-22 06:25:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 06:25:15,159 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 150 [2020-08-22 06:25:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:15,160 INFO L225 Difference]: With dead ends: 163 [2020-08-22 06:25:15,160 INFO L226 Difference]: Without dead ends: 161 [2020-08-22 06:25:15,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2020-08-22 06:25:15,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-22 06:25:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2020-08-22 06:25:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-22 06:25:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2020-08-22 06:25:15,171 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 150 [2020-08-22 06:25:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:15,173 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2020-08-22 06:25:15,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-22 06:25:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2020-08-22 06:25:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 06:25:15,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:15,175 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:15,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 06:25:15,176 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:15,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:15,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1606887624, now seen corresponding path program 21 times [2020-08-22 06:25:15,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:15,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969454363] [2020-08-22 06:25:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 42 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-08-22 06:25:15,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969454363] [2020-08-22 06:25:15,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:15,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-22 06:25:15,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499114003] [2020-08-22 06:25:15,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-22 06:25:15,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:15,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-22 06:25:15,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-08-22 06:25:15,590 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 26 states. [2020-08-22 06:25:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:15,801 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2020-08-22 06:25:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 06:25:15,801 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 157 [2020-08-22 06:25:15,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:15,803 INFO L225 Difference]: With dead ends: 170 [2020-08-22 06:25:15,803 INFO L226 Difference]: Without dead ends: 168 [2020-08-22 06:25:15,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2020-08-22 06:25:15,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-22 06:25:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2020-08-22 06:25:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-22 06:25:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-08-22 06:25:15,812 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 157 [2020-08-22 06:25:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:15,812 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-08-22 06:25:15,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-22 06:25:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-08-22 06:25:15,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-22 06:25:15,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:15,815 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:15,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 06:25:15,815 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:15,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:15,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1525225877, now seen corresponding path program 22 times [2020-08-22 06:25:15,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:15,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660801244] [2020-08-22 06:25:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 44 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-08-22 06:25:16,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660801244] [2020-08-22 06:25:16,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:16,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-08-22 06:25:16,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959056999] [2020-08-22 06:25:16,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-22 06:25:16,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:16,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-22 06:25:16,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-08-22 06:25:16,225 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 27 states. [2020-08-22 06:25:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:16,487 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2020-08-22 06:25:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 06:25:16,488 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 164 [2020-08-22 06:25:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:16,489 INFO L225 Difference]: With dead ends: 177 [2020-08-22 06:25:16,489 INFO L226 Difference]: Without dead ends: 175 [2020-08-22 06:25:16,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2020-08-22 06:25:16,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-22 06:25:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2020-08-22 06:25:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-22 06:25:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2020-08-22 06:25:16,498 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 164 [2020-08-22 06:25:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:16,499 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2020-08-22 06:25:16,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-22 06:25:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2020-08-22 06:25:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 06:25:16,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:16,501 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:16,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 06:25:16,501 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:16,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:16,502 INFO L82 PathProgramCache]: Analyzing trace with hash 302651432, now seen corresponding path program 23 times [2020-08-22 06:25:16,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:16,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601986784] [2020-08-22 06:25:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 46 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-08-22 06:25:16,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601986784] [2020-08-22 06:25:16,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:16,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 06:25:16,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423435716] [2020-08-22 06:25:16,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 06:25:16,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:16,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 06:25:16,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-08-22 06:25:16,939 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 28 states. [2020-08-22 06:25:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:17,202 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2020-08-22 06:25:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 06:25:17,203 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 171 [2020-08-22 06:25:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:17,204 INFO L225 Difference]: With dead ends: 184 [2020-08-22 06:25:17,204 INFO L226 Difference]: Without dead ends: 182 [2020-08-22 06:25:17,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2020-08-22 06:25:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-22 06:25:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2020-08-22 06:25:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-08-22 06:25:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2020-08-22 06:25:17,212 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 171 [2020-08-22 06:25:17,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:17,213 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2020-08-22 06:25:17,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 06:25:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2020-08-22 06:25:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-22 06:25:17,215 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:17,215 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:17,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 06:25:17,216 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:17,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:17,216 INFO L82 PathProgramCache]: Analyzing trace with hash 666639925, now seen corresponding path program 24 times [2020-08-22 06:25:17,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:17,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975740780] [2020-08-22 06:25:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 48 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-08-22 06:25:17,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975740780] [2020-08-22 06:25:17,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:17,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-22 06:25:17,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486220945] [2020-08-22 06:25:17,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 06:25:17,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:17,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 06:25:17,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-08-22 06:25:17,716 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 29 states. [2020-08-22 06:25:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:17,996 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2020-08-22 06:25:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 06:25:17,997 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 178 [2020-08-22 06:25:17,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:17,998 INFO L225 Difference]: With dead ends: 191 [2020-08-22 06:25:17,998 INFO L226 Difference]: Without dead ends: 189 [2020-08-22 06:25:17,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=511, Unknown=0, NotChecked=0, Total=870 [2020-08-22 06:25:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-22 06:25:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2020-08-22 06:25:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-22 06:25:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2020-08-22 06:25:18,009 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 178 [2020-08-22 06:25:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:18,010 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2020-08-22 06:25:18,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 06:25:18,010 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2020-08-22 06:25:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-22 06:25:18,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:18,012 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:18,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 06:25:18,013 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash 860266376, now seen corresponding path program 25 times [2020-08-22 06:25:18,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:18,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881254012] [2020-08-22 06:25:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 50 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-08-22 06:25:18,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881254012] [2020-08-22 06:25:18,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:18,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-08-22 06:25:18,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134184098] [2020-08-22 06:25:18,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-08-22 06:25:18,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:18,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-08-22 06:25:18,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-08-22 06:25:18,530 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 30 states. [2020-08-22 06:25:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:18,858 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2020-08-22 06:25:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 06:25:18,858 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 185 [2020-08-22 06:25:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:18,860 INFO L225 Difference]: With dead ends: 198 [2020-08-22 06:25:18,861 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 06:25:18,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2020-08-22 06:25:18,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 06:25:18,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2020-08-22 06:25:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-22 06:25:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2020-08-22 06:25:18,869 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 185 [2020-08-22 06:25:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:18,869 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2020-08-22 06:25:18,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-08-22 06:25:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2020-08-22 06:25:18,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-22 06:25:18,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:18,872 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:18,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 06:25:18,872 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash 505055957, now seen corresponding path program 26 times [2020-08-22 06:25:18,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:18,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986144484] [2020-08-22 06:25:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 52 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-08-22 06:25:19,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986144484] [2020-08-22 06:25:19,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:19,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-08-22 06:25:19,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304242421] [2020-08-22 06:25:19,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 06:25:19,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:19,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 06:25:19,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2020-08-22 06:25:19,402 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 31 states. [2020-08-22 06:25:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:19,694 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2020-08-22 06:25:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 06:25:19,696 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 192 [2020-08-22 06:25:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:19,697 INFO L225 Difference]: With dead ends: 205 [2020-08-22 06:25:19,698 INFO L226 Difference]: Without dead ends: 203 [2020-08-22 06:25:19,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2020-08-22 06:25:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-08-22 06:25:19,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2020-08-22 06:25:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-22 06:25:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2020-08-22 06:25:19,708 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 192 [2020-08-22 06:25:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:19,709 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2020-08-22 06:25:19,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 06:25:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2020-08-22 06:25:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-08-22 06:25:19,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:19,710 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:19,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 06:25:19,711 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:19,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:19,711 INFO L82 PathProgramCache]: Analyzing trace with hash -489505048, now seen corresponding path program 27 times [2020-08-22 06:25:19,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:19,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827339114] [2020-08-22 06:25:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 54 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-08-22 06:25:20,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827339114] [2020-08-22 06:25:20,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:20,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-08-22 06:25:20,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982643489] [2020-08-22 06:25:20,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-22 06:25:20,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:20,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-22 06:25:20,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2020-08-22 06:25:20,355 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 32 states. [2020-08-22 06:25:20,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:20,620 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2020-08-22 06:25:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-22 06:25:20,621 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 199 [2020-08-22 06:25:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:20,622 INFO L225 Difference]: With dead ends: 212 [2020-08-22 06:25:20,623 INFO L226 Difference]: Without dead ends: 210 [2020-08-22 06:25:20,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=443, Invalid=613, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 06:25:20,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-22 06:25:20,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2020-08-22 06:25:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-22 06:25:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2020-08-22 06:25:20,632 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 199 [2020-08-22 06:25:20,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:20,632 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2020-08-22 06:25:20,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-22 06:25:20,632 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2020-08-22 06:25:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-08-22 06:25:20,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:20,634 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:20,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-22 06:25:20,634 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:20,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:20,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1374576501, now seen corresponding path program 28 times [2020-08-22 06:25:20,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:20,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245020504] [2020-08-22 06:25:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 56 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-08-22 06:25:21,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245020504] [2020-08-22 06:25:21,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:21,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-08-22 06:25:21,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504006167] [2020-08-22 06:25:21,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-08-22 06:25:21,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:21,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-08-22 06:25:21,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 06:25:21,339 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 33 states. [2020-08-22 06:25:21,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:21,615 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2020-08-22 06:25:21,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 06:25:21,615 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-08-22 06:25:21,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:21,617 INFO L225 Difference]: With dead ends: 219 [2020-08-22 06:25:21,617 INFO L226 Difference]: Without dead ends: 217 [2020-08-22 06:25:21,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=473, Invalid=649, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 06:25:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-08-22 06:25:21,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2020-08-22 06:25:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-22 06:25:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2020-08-22 06:25:21,628 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 206 [2020-08-22 06:25:21,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:21,628 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2020-08-22 06:25:21,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-08-22 06:25:21,629 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2020-08-22 06:25:21,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-08-22 06:25:21,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:21,630 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:21,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-22 06:25:21,630 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:21,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1316719032, now seen corresponding path program 29 times [2020-08-22 06:25:21,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:21,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893721583] [2020-08-22 06:25:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 58 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-08-22 06:25:22,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893721583] [2020-08-22 06:25:22,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:22,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-08-22 06:25:22,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423045864] [2020-08-22 06:25:22,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-08-22 06:25:22,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:22,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-08-22 06:25:22,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 06:25:22,323 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 34 states. [2020-08-22 06:25:22,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:22,619 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2020-08-22 06:25:22,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 06:25:22,619 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 213 [2020-08-22 06:25:22,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:22,621 INFO L225 Difference]: With dead ends: 226 [2020-08-22 06:25:22,621 INFO L226 Difference]: Without dead ends: 224 [2020-08-22 06:25:22,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=504, Invalid=686, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 06:25:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-22 06:25:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2020-08-22 06:25:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-22 06:25:22,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2020-08-22 06:25:22,634 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 213 [2020-08-22 06:25:22,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:22,635 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2020-08-22 06:25:22,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-08-22 06:25:22,635 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2020-08-22 06:25:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-08-22 06:25:22,636 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:22,637 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:22,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-22 06:25:22,637 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1247699947, now seen corresponding path program 30 times [2020-08-22 06:25:22,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:22,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740125394] [2020-08-22 06:25:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 60 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-08-22 06:25:23,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740125394] [2020-08-22 06:25:23,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:23,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-08-22 06:25:23,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371552448] [2020-08-22 06:25:23,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-08-22 06:25:23,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:23,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-08-22 06:25:23,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 06:25:23,311 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 35 states. [2020-08-22 06:25:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:23,636 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2020-08-22 06:25:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-22 06:25:23,637 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 220 [2020-08-22 06:25:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:23,638 INFO L225 Difference]: With dead ends: 233 [2020-08-22 06:25:23,639 INFO L226 Difference]: Without dead ends: 231 [2020-08-22 06:25:23,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=536, Invalid=724, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 06:25:23,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-08-22 06:25:23,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2020-08-22 06:25:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-22 06:25:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2020-08-22 06:25:23,648 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 220 [2020-08-22 06:25:23,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:23,648 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2020-08-22 06:25:23,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-08-22 06:25:23,649 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2020-08-22 06:25:23,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-08-22 06:25:23,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:23,651 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:23,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-22 06:25:23,652 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:23,652 INFO L82 PathProgramCache]: Analyzing trace with hash 28427688, now seen corresponding path program 31 times [2020-08-22 06:25:23,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:23,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039575492] [2020-08-22 06:25:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 62 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-08-22 06:25:24,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039575492] [2020-08-22 06:25:24,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:24,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-08-22 06:25:24,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33072795] [2020-08-22 06:25:24,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-08-22 06:25:24,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:24,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-08-22 06:25:24,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 06:25:24,361 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 36 states. [2020-08-22 06:25:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:24,726 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2020-08-22 06:25:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-22 06:25:24,727 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 227 [2020-08-22 06:25:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:24,730 INFO L225 Difference]: With dead ends: 240 [2020-08-22 06:25:24,730 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 06:25:24,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=569, Invalid=763, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 06:25:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 06:25:24,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2020-08-22 06:25:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-22 06:25:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2020-08-22 06:25:24,741 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 227 [2020-08-22 06:25:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:24,742 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2020-08-22 06:25:24,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-08-22 06:25:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2020-08-22 06:25:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-08-22 06:25:24,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:24,744 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:24,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-22 06:25:24,744 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:24,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:24,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1172422475, now seen corresponding path program 32 times [2020-08-22 06:25:24,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:24,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118065219] [2020-08-22 06:25:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 64 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-08-22 06:25:25,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118065219] [2020-08-22 06:25:25,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:25,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-08-22 06:25:25,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104436258] [2020-08-22 06:25:25,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-08-22 06:25:25,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:25,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-08-22 06:25:25,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=733, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 06:25:25,521 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 37 states. [2020-08-22 06:25:25,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:25,888 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2020-08-22 06:25:25,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-22 06:25:25,889 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 234 [2020-08-22 06:25:25,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:25,891 INFO L225 Difference]: With dead ends: 247 [2020-08-22 06:25:25,891 INFO L226 Difference]: Without dead ends: 245 [2020-08-22 06:25:25,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=603, Invalid=803, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 06:25:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-08-22 06:25:25,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2020-08-22 06:25:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 06:25:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2020-08-22 06:25:25,905 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 234 [2020-08-22 06:25:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:25,905 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2020-08-22 06:25:25,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-08-22 06:25:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2020-08-22 06:25:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-08-22 06:25:25,907 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:25,907 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:25,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-22 06:25:25,907 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:25,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1731243272, now seen corresponding path program 33 times [2020-08-22 06:25:25,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:25,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337770394] [2020-08-22 06:25:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 66 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-08-22 06:25:26,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337770394] [2020-08-22 06:25:26,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:26,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-08-22 06:25:26,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982326174] [2020-08-22 06:25:26,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-08-22 06:25:26,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:26,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-08-22 06:25:26,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 06:25:26,712 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 38 states. [2020-08-22 06:25:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:27,086 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2020-08-22 06:25:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-22 06:25:27,087 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 241 [2020-08-22 06:25:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:27,088 INFO L225 Difference]: With dead ends: 254 [2020-08-22 06:25:27,088 INFO L226 Difference]: Without dead ends: 252 [2020-08-22 06:25:27,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=638, Invalid=844, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 06:25:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-08-22 06:25:27,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2020-08-22 06:25:27,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-08-22 06:25:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2020-08-22 06:25:27,097 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 241 [2020-08-22 06:25:27,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:27,097 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2020-08-22 06:25:27,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-08-22 06:25:27,098 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2020-08-22 06:25:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-08-22 06:25:27,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:27,099 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:27,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-22 06:25:27,100 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:27,100 INFO L82 PathProgramCache]: Analyzing trace with hash -288469675, now seen corresponding path program 34 times [2020-08-22 06:25:27,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:27,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835761119] [2020-08-22 06:25:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 68 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-08-22 06:25:27,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835761119] [2020-08-22 06:25:27,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:27,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-08-22 06:25:27,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147853165] [2020-08-22 06:25:27,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-22 06:25:27,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:27,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-22 06:25:27,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 06:25:27,950 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 39 states. [2020-08-22 06:25:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:28,340 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2020-08-22 06:25:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-22 06:25:28,340 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 248 [2020-08-22 06:25:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:28,342 INFO L225 Difference]: With dead ends: 261 [2020-08-22 06:25:28,342 INFO L226 Difference]: Without dead ends: 259 [2020-08-22 06:25:28,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=674, Invalid=886, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 06:25:28,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-22 06:25:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2020-08-22 06:25:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-22 06:25:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2020-08-22 06:25:28,351 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 248 [2020-08-22 06:25:28,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:28,351 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2020-08-22 06:25:28,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-22 06:25:28,351 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2020-08-22 06:25:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-08-22 06:25:28,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:28,353 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:28,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-22 06:25:28,353 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:28,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:28,354 INFO L82 PathProgramCache]: Analyzing trace with hash 123153512, now seen corresponding path program 35 times [2020-08-22 06:25:28,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:28,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016646103] [2020-08-22 06:25:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 70 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-08-22 06:25:29,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016646103] [2020-08-22 06:25:29,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:29,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-08-22 06:25:29,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629539625] [2020-08-22 06:25:29,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-08-22 06:25:29,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:29,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-08-22 06:25:29,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=853, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 06:25:29,234 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 40 states. [2020-08-22 06:25:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:29,643 INFO L93 Difference]: Finished difference Result 268 states and 268 transitions. [2020-08-22 06:25:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 06:25:29,643 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 255 [2020-08-22 06:25:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:29,646 INFO L225 Difference]: With dead ends: 268 [2020-08-22 06:25:29,646 INFO L226 Difference]: Without dead ends: 266 [2020-08-22 06:25:29,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=711, Invalid=929, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 06:25:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-22 06:25:29,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2020-08-22 06:25:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-22 06:25:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2020-08-22 06:25:29,656 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 255 [2020-08-22 06:25:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:29,656 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2020-08-22 06:25:29,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-08-22 06:25:29,657 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2020-08-22 06:25:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-08-22 06:25:29,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:29,658 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:29,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-22 06:25:29,659 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:29,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:29,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1583627787, now seen corresponding path program 36 times [2020-08-22 06:25:29,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:29,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658270268] [2020-08-22 06:25:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 72 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-08-22 06:25:30,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658270268] [2020-08-22 06:25:30,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:30,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-08-22 06:25:30,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523060201] [2020-08-22 06:25:30,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-08-22 06:25:30,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:30,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-08-22 06:25:30,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=895, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 06:25:30,515 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 41 states. [2020-08-22 06:25:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:30,927 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2020-08-22 06:25:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 06:25:30,928 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 262 [2020-08-22 06:25:30,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:30,929 INFO L225 Difference]: With dead ends: 275 [2020-08-22 06:25:30,929 INFO L226 Difference]: Without dead ends: 273 [2020-08-22 06:25:30,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=749, Invalid=973, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 06:25:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-22 06:25:30,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 272. [2020-08-22 06:25:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-22 06:25:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2020-08-22 06:25:30,939 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 262 [2020-08-22 06:25:30,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:30,940 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2020-08-22 06:25:30,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-08-22 06:25:30,940 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2020-08-22 06:25:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-22 06:25:30,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:30,942 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:30,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-22 06:25:30,943 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:30,943 INFO L82 PathProgramCache]: Analyzing trace with hash -117750840, now seen corresponding path program 37 times [2020-08-22 06:25:30,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:30,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867134902] [2020-08-22 06:25:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 74 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-08-22 06:25:31,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867134902] [2020-08-22 06:25:31,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:31,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-08-22 06:25:31,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106147700] [2020-08-22 06:25:31,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-08-22 06:25:31,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:31,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-08-22 06:25:31,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=938, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 06:25:31,914 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand 42 states. [2020-08-22 06:25:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:32,291 INFO L93 Difference]: Finished difference Result 282 states and 282 transitions. [2020-08-22 06:25:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-22 06:25:32,292 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 269 [2020-08-22 06:25:32,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:32,294 INFO L225 Difference]: With dead ends: 282 [2020-08-22 06:25:32,294 INFO L226 Difference]: Without dead ends: 280 [2020-08-22 06:25:32,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=788, Invalid=1018, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 06:25:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-08-22 06:25:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2020-08-22 06:25:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-08-22 06:25:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2020-08-22 06:25:32,303 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 269 [2020-08-22 06:25:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:32,303 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2020-08-22 06:25:32,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-08-22 06:25:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2020-08-22 06:25:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-08-22 06:25:32,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:32,305 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:32,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-08-22 06:25:32,305 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:32,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:32,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2129698453, now seen corresponding path program 38 times [2020-08-22 06:25:32,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:32,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190246762] [2020-08-22 06:25:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 76 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-08-22 06:25:33,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190246762] [2020-08-22 06:25:33,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:33,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-08-22 06:25:33,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097349501] [2020-08-22 06:25:33,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-08-22 06:25:33,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:33,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-08-22 06:25:33,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=824, Invalid=982, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 06:25:33,298 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 43 states. [2020-08-22 06:25:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:33,759 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2020-08-22 06:25:33,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 06:25:33,760 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 276 [2020-08-22 06:25:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:33,761 INFO L225 Difference]: With dead ends: 289 [2020-08-22 06:25:33,761 INFO L226 Difference]: Without dead ends: 287 [2020-08-22 06:25:33,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1064, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 06:25:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-22 06:25:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2020-08-22 06:25:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-08-22 06:25:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2020-08-22 06:25:33,772 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 276 [2020-08-22 06:25:33,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:33,772 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2020-08-22 06:25:33,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-08-22 06:25:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2020-08-22 06:25:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-22 06:25:33,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:33,774 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:33,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-08-22 06:25:33,775 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:33,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1535970520, now seen corresponding path program 39 times [2020-08-22 06:25:33,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:33,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859876015] [2020-08-22 06:25:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 78 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-08-22 06:25:34,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859876015] [2020-08-22 06:25:34,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:34,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-08-22 06:25:34,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244992912] [2020-08-22 06:25:34,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-08-22 06:25:34,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:34,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-08-22 06:25:34,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=1027, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 06:25:34,885 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 44 states. [2020-08-22 06:25:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:35,317 INFO L93 Difference]: Finished difference Result 296 states and 296 transitions. [2020-08-22 06:25:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-22 06:25:35,318 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 283 [2020-08-22 06:25:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:35,321 INFO L225 Difference]: With dead ends: 296 [2020-08-22 06:25:35,321 INFO L226 Difference]: Without dead ends: 294 [2020-08-22 06:25:35,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=869, Invalid=1111, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 06:25:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-08-22 06:25:35,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2020-08-22 06:25:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-22 06:25:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2020-08-22 06:25:35,355 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 283 [2020-08-22 06:25:35,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:35,360 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2020-08-22 06:25:35,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-08-22 06:25:35,361 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2020-08-22 06:25:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-08-22 06:25:35,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:35,368 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:35,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-08-22 06:25:35,371 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:35,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:35,372 INFO L82 PathProgramCache]: Analyzing trace with hash 834069301, now seen corresponding path program 40 times [2020-08-22 06:25:35,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:35,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578911475] [2020-08-22 06:25:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 80 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2020-08-22 06:25:36,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578911475] [2020-08-22 06:25:36,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:36,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-08-22 06:25:36,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2784853] [2020-08-22 06:25:36,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-08-22 06:25:36,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:36,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-08-22 06:25:36,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=907, Invalid=1073, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 06:25:36,863 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 45 states. [2020-08-22 06:25:37,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:37,476 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2020-08-22 06:25:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-22 06:25:37,476 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 290 [2020-08-22 06:25:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:37,479 INFO L225 Difference]: With dead ends: 303 [2020-08-22 06:25:37,479 INFO L226 Difference]: Without dead ends: 301 [2020-08-22 06:25:37,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=911, Invalid=1159, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 06:25:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-08-22 06:25:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2020-08-22 06:25:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-08-22 06:25:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 300 transitions. [2020-08-22 06:25:37,493 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 300 transitions. Word has length 290 [2020-08-22 06:25:37,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:37,493 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 300 transitions. [2020-08-22 06:25:37,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-08-22 06:25:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 300 transitions. [2020-08-22 06:25:37,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-08-22 06:25:37,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:37,497 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:37,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-08-22 06:25:37,498 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:37,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:37,498 INFO L82 PathProgramCache]: Analyzing trace with hash 596916872, now seen corresponding path program 41 times [2020-08-22 06:25:37,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:37,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450086474] [2020-08-22 06:25:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 82 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-08-22 06:25:38,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450086474] [2020-08-22 06:25:38,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:38,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-08-22 06:25:38,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396634711] [2020-08-22 06:25:38,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-08-22 06:25:38,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:38,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-08-22 06:25:38,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=1120, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 06:25:38,963 INFO L87 Difference]: Start difference. First operand 300 states and 300 transitions. Second operand 46 states. [2020-08-22 06:25:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:39,441 INFO L93 Difference]: Finished difference Result 310 states and 310 transitions. [2020-08-22 06:25:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-22 06:25:39,442 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 297 [2020-08-22 06:25:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:39,444 INFO L225 Difference]: With dead ends: 310 [2020-08-22 06:25:39,445 INFO L226 Difference]: Without dead ends: 308 [2020-08-22 06:25:39,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=954, Invalid=1208, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 06:25:39,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-08-22 06:25:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2020-08-22 06:25:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-08-22 06:25:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2020-08-22 06:25:39,454 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 297 [2020-08-22 06:25:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:39,455 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2020-08-22 06:25:39,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-08-22 06:25:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2020-08-22 06:25:39,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-08-22 06:25:39,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:39,457 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:39,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-08-22 06:25:39,457 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:39,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:39,458 INFO L82 PathProgramCache]: Analyzing trace with hash 56135637, now seen corresponding path program 42 times [2020-08-22 06:25:39,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:39,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568945047] [2020-08-22 06:25:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 06:25:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 84 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2020-08-22 06:25:40,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568945047] [2020-08-22 06:25:40,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:40,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-08-22 06:25:40,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033317412] [2020-08-22 06:25:40,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-08-22 06:25:40,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:40,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-08-22 06:25:40,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=994, Invalid=1168, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 06:25:40,689 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 47 states. [2020-08-22 06:25:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:41,149 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2020-08-22 06:25:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-22 06:25:41,152 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 304 [2020-08-22 06:25:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:41,154 INFO L225 Difference]: With dead ends: 317 [2020-08-22 06:25:41,154 INFO L226 Difference]: Without dead ends: 315 [2020-08-22 06:25:41,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=998, Invalid=1258, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 06:25:41,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-08-22 06:25:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 314. [2020-08-22 06:25:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-08-22 06:25:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2020-08-22 06:25:41,161 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 304 [2020-08-22 06:25:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:41,162 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2020-08-22 06:25:41,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-08-22 06:25:41,162 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2020-08-22 06:25:41,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-22 06:25:41,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:41,164 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:41,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-08-22 06:25:41,164 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:41,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:41,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1581966872, now seen corresponding path program 43 times [2020-08-22 06:25:41,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:41,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101193436] [2020-08-22 06:25:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 06:25:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-22 06:25:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 86 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-08-22 06:25:42,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101193436] [2020-08-22 06:25:42,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:42,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-08-22 06:25:42,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061572541] [2020-08-22 06:25:42,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-08-22 06:25:42,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:42,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-08-22 06:25:42,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=1217, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 06:25:42,443 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand 48 states. [2020-08-22 06:25:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:42,943 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2020-08-22 06:25:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-08-22 06:25:42,944 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 311 [2020-08-22 06:25:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:42,946 INFO L225 Difference]: With dead ends: 324 [2020-08-22 06:25:42,946 INFO L226 Difference]: Without dead ends: 322 [2020-08-22 06:25:42,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1043, Invalid=1309, Unknown=0, NotChecked=0, Total=2352 [2020-08-22 06:25:42,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-22 06:25:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2020-08-22 06:25:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-22 06:25:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2020-08-22 06:25:42,956 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 311 [2020-08-22 06:25:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:42,956 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2020-08-22 06:25:42,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-08-22 06:25:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2020-08-22 06:25:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-08-22 06:25:42,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:42,958 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:42,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-08-22 06:25:42,959 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:42,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2076157045, now seen corresponding path program 44 times [2020-08-22 06:25:42,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:42,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129717574] [2020-08-22 06:25:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 06:25:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-22 06:25:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 06:25:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 88 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2020-08-22 06:25:44,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129717574] [2020-08-22 06:25:44,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:44,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-08-22 06:25:44,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466935873] [2020-08-22 06:25:44,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-08-22 06:25:44,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:44,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-08-22 06:25:44,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=1267, Unknown=0, NotChecked=0, Total=2352 [2020-08-22 06:25:44,308 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 49 states. [2020-08-22 06:25:44,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:44,809 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2020-08-22 06:25:44,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-22 06:25:44,809 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 318 [2020-08-22 06:25:44,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:44,811 INFO L225 Difference]: With dead ends: 331 [2020-08-22 06:25:44,812 INFO L226 Difference]: Without dead ends: 329 [2020-08-22 06:25:44,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1089, Invalid=1361, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 06:25:44,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-08-22 06:25:44,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2020-08-22 06:25:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-08-22 06:25:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2020-08-22 06:25:44,821 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 318 [2020-08-22 06:25:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:44,822 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2020-08-22 06:25:44,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-08-22 06:25:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2020-08-22 06:25:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-08-22 06:25:44,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:44,824 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:44,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-08-22 06:25:44,825 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:44,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1146384056, now seen corresponding path program 45 times [2020-08-22 06:25:44,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:44,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892423395] [2020-08-22 06:25:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 06:25:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-22 06:25:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 06:25:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-08-22 06:25:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 90 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-08-22 06:25:46,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892423395] [2020-08-22 06:25:46,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:46,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-08-22 06:25:46,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643971049] [2020-08-22 06:25:46,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-08-22 06:25:46,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:46,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-08-22 06:25:46,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=1318, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 06:25:46,220 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 50 states. [2020-08-22 06:25:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:46,746 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2020-08-22 06:25:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-08-22 06:25:46,747 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 325 [2020-08-22 06:25:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:46,750 INFO L225 Difference]: With dead ends: 338 [2020-08-22 06:25:46,750 INFO L226 Difference]: Without dead ends: 336 [2020-08-22 06:25:46,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1136, Invalid=1414, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 06:25:46,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-22 06:25:46,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 335. [2020-08-22 06:25:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-22 06:25:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2020-08-22 06:25:46,761 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 325 [2020-08-22 06:25:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:46,762 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2020-08-22 06:25:46,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-08-22 06:25:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2020-08-22 06:25:46,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-08-22 06:25:46,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:46,764 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:46,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-08-22 06:25:46,764 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:46,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:46,765 INFO L82 PathProgramCache]: Analyzing trace with hash 22421781, now seen corresponding path program 46 times [2020-08-22 06:25:46,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:46,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205789355] [2020-08-22 06:25:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 06:25:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-22 06:25:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 06:25:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-08-22 06:25:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 06:25:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 92 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2020-08-22 06:25:48,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205789355] [2020-08-22 06:25:48,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:48,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-08-22 06:25:48,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398823778] [2020-08-22 06:25:48,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-08-22 06:25:48,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:48,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-08-22 06:25:48,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=1370, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 06:25:48,338 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 51 states. [2020-08-22 06:25:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:48,948 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2020-08-22 06:25:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-22 06:25:48,948 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 332 [2020-08-22 06:25:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:48,950 INFO L225 Difference]: With dead ends: 345 [2020-08-22 06:25:48,951 INFO L226 Difference]: Without dead ends: 343 [2020-08-22 06:25:48,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1184, Invalid=1468, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 06:25:48,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-08-22 06:25:48,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 342. [2020-08-22 06:25:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-08-22 06:25:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 342 transitions. [2020-08-22 06:25:48,961 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 342 transitions. Word has length 332 [2020-08-22 06:25:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:48,962 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 342 transitions. [2020-08-22 06:25:48,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-08-22 06:25:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 342 transitions. [2020-08-22 06:25:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-08-22 06:25:48,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:48,964 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:48,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-08-22 06:25:48,965 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:48,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:48,965 INFO L82 PathProgramCache]: Analyzing trace with hash -540172120, now seen corresponding path program 47 times [2020-08-22 06:25:48,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:48,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420719676] [2020-08-22 06:25:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 06:25:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-22 06:25:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 06:25:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-08-22 06:25:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 06:25:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-08-22 06:25:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 94 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-08-22 06:25:50,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420719676] [2020-08-22 06:25:50,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:50,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-08-22 06:25:50,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584280901] [2020-08-22 06:25:50,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-08-22 06:25:50,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:50,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-08-22 06:25:50,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=1423, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 06:25:50,493 INFO L87 Difference]: Start difference. First operand 342 states and 342 transitions. Second operand 52 states. [2020-08-22 06:25:51,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:51,184 INFO L93 Difference]: Finished difference Result 352 states and 352 transitions. [2020-08-22 06:25:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-22 06:25:51,185 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 339 [2020-08-22 06:25:51,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:51,187 INFO L225 Difference]: With dead ends: 352 [2020-08-22 06:25:51,187 INFO L226 Difference]: Without dead ends: 350 [2020-08-22 06:25:51,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1233, Invalid=1523, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 06:25:51,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-08-22 06:25:51,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 349. [2020-08-22 06:25:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-08-22 06:25:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2020-08-22 06:25:51,198 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 339 [2020-08-22 06:25:51,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:51,198 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2020-08-22 06:25:51,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-08-22 06:25:51,198 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2020-08-22 06:25:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-08-22 06:25:51,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:51,201 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:51,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-08-22 06:25:51,201 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:51,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:51,202 INFO L82 PathProgramCache]: Analyzing trace with hash 2030437813, now seen corresponding path program 48 times [2020-08-22 06:25:51,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:51,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612485058] [2020-08-22 06:25:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 06:25:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-22 06:25:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 06:25:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-08-22 06:25:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 06:25:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-08-22 06:25:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-08-22 06:25:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 96 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2020-08-22 06:25:52,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612485058] [2020-08-22 06:25:52,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:52,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-08-22 06:25:52,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891333517] [2020-08-22 06:25:52,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-08-22 06:25:52,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:52,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-08-22 06:25:52,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1279, Invalid=1477, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 06:25:52,719 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 53 states. [2020-08-22 06:25:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:53,392 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2020-08-22 06:25:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-22 06:25:53,392 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 346 [2020-08-22 06:25:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:53,395 INFO L225 Difference]: With dead ends: 359 [2020-08-22 06:25:53,395 INFO L226 Difference]: Without dead ends: 357 [2020-08-22 06:25:53,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1283, Invalid=1579, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 06:25:53,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-08-22 06:25:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 356. [2020-08-22 06:25:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-08-22 06:25:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2020-08-22 06:25:53,406 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 346 [2020-08-22 06:25:53,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:53,407 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2020-08-22 06:25:53,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-08-22 06:25:53,407 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2020-08-22 06:25:53,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-08-22 06:25:53,410 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:53,410 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:53,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-08-22 06:25:53,410 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:53,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1376696312, now seen corresponding path program 49 times [2020-08-22 06:25:53,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:53,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010649772] [2020-08-22 06:25:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 06:25:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-22 06:25:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 06:25:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-08-22 06:25:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 06:25:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-08-22 06:25:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-08-22 06:25:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-08-22 06:25:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 98 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-08-22 06:25:55,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010649772] [2020-08-22 06:25:55,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:55,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-08-22 06:25:55,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899760356] [2020-08-22 06:25:55,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-08-22 06:25:55,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:55,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-08-22 06:25:55,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=1532, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 06:25:55,106 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 54 states. [2020-08-22 06:25:55,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:55,805 INFO L93 Difference]: Finished difference Result 366 states and 366 transitions. [2020-08-22 06:25:55,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-22 06:25:55,806 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 353 [2020-08-22 06:25:55,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:55,808 INFO L225 Difference]: With dead ends: 366 [2020-08-22 06:25:55,808 INFO L226 Difference]: Without dead ends: 364 [2020-08-22 06:25:55,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1334, Invalid=1636, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 06:25:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-08-22 06:25:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 363. [2020-08-22 06:25:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-22 06:25:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2020-08-22 06:25:55,820 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 353 [2020-08-22 06:25:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:55,821 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2020-08-22 06:25:55,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-08-22 06:25:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2020-08-22 06:25:55,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-08-22 06:25:55,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:55,824 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:55,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-08-22 06:25:55,824 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:55,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:55,825 INFO L82 PathProgramCache]: Analyzing trace with hash -432450987, now seen corresponding path program 50 times [2020-08-22 06:25:55,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:55,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57979139] [2020-08-22 06:25:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 06:25:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-22 06:25:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 06:25:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-08-22 06:25:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 06:25:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-08-22 06:25:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-08-22 06:25:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-08-22 06:25:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 06:25:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 100 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2020-08-22 06:25:57,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57979139] [2020-08-22 06:25:57,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:57,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-08-22 06:25:57,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190344353] [2020-08-22 06:25:57,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-08-22 06:25:57,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:57,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-08-22 06:25:57,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1382, Invalid=1588, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 06:25:57,459 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 55 states. [2020-08-22 06:25:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:58,164 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2020-08-22 06:25:58,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-08-22 06:25:58,165 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 360 [2020-08-22 06:25:58,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:58,167 INFO L225 Difference]: With dead ends: 373 [2020-08-22 06:25:58,167 INFO L226 Difference]: Without dead ends: 371 [2020-08-22 06:25:58,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1386, Invalid=1694, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 06:25:58,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-08-22 06:25:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 370. [2020-08-22 06:25:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-08-22 06:25:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 370 transitions. [2020-08-22 06:25:58,176 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 370 transitions. Word has length 360 [2020-08-22 06:25:58,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:58,177 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 370 transitions. [2020-08-22 06:25:58,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-08-22 06:25:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 370 transitions. [2020-08-22 06:25:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-08-22 06:25:58,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:58,180 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:58,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-08-22 06:25:58,180 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:58,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1466730344, now seen corresponding path program 51 times [2020-08-22 06:25:58,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:58,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670023006] [2020-08-22 06:25:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:25:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 06:25:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 06:25:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 06:25:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:25:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:25:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 06:25:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:25:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 06:25:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:25:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:25:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 06:25:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:25:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:25:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:25:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 06:25:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:25:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 06:25:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 06:25:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:25:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 06:25:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 06:25:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 06:25:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 06:25:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 06:25:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 06:25:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 06:25:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 06:25:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 06:25:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 06:25:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-22 06:25:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 06:25:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-22 06:25:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 06:25:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 06:25:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 06:25:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 06:25:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 06:25:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-22 06:25:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 06:25:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 06:25:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 06:25:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-22 06:25:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 06:25:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-08-22 06:25:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 06:25:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-08-22 06:25:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-08-22 06:25:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-08-22 06:25:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 06:25:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-22 06:25:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 102 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-08-22 06:25:59,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670023006] [2020-08-22 06:25:59,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:59,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-08-22 06:25:59,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216435912] [2020-08-22 06:25:59,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-08-22 06:25:59,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:59,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-08-22 06:25:59,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=1645, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 06:25:59,856 INFO L87 Difference]: Start difference. First operand 370 states and 370 transitions. Second operand 56 states.