/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:15:24,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:15:24,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:15:24,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:15:24,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:15:24,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:15:24,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:15:24,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:15:24,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:15:24,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:15:24,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:15:24,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:15:24,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:15:24,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:15:24,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:15:24,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:15:24,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:15:24,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:15:24,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:15:24,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:15:24,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:15:24,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:15:24,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:15:24,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:15:24,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:15:24,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:15:24,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:15:24,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:15:24,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:15:24,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:15:24,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:15:24,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:15:24,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:15:24,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:15:24,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:15:24,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:15:24,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:15:24,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:15:24,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:15:24,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:15:24,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:15:24,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:15:24,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:15:24,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:15:24,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:15:24,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:15:24,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:15:24,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:15:24,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:15:24,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:15:24,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:15:24,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:15:24,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:15:24,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:15:24,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:15:24,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:15:24,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:15:24,804 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:15:24,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:15:24,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:15:24,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:15:24,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:15:24,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:15:24,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:15:24,805 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 23:15:25,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:15:25,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:15:25,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:15:25,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:15:25,289 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:15:25,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-09-04 23:15:25,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7387011e7/8fe56175f2cf4c3f91897c5c9837d5ef/FLAGa7951f029 [2020-09-04 23:15:25,939 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:15:25,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-09-04 23:15:25,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7387011e7/8fe56175f2cf4c3f91897c5c9837d5ef/FLAGa7951f029 [2020-09-04 23:15:26,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7387011e7/8fe56175f2cf4c3f91897c5c9837d5ef [2020-09-04 23:15:26,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:15:26,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:15:26,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:15:26,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:15:26,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:15:26,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:15:26" (1/1) ... [2020-09-04 23:15:26,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a94c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26, skipping insertion in model container [2020-09-04 23:15:26,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:15:26" (1/1) ... [2020-09-04 23:15:26,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:15:26,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:15:26,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:15:26,547 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:15:26,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:15:26,579 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:15:26,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26 WrapperNode [2020-09-04 23:15:26,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:15:26,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:15:26,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:15:26,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:15:26,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26" (1/1) ... [2020-09-04 23:15:26,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26" (1/1) ... [2020-09-04 23:15:26,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26" (1/1) ... [2020-09-04 23:15:26,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26" (1/1) ... [2020-09-04 23:15:26,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26" (1/1) ... [2020-09-04 23:15:26,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26" (1/1) ... [2020-09-04 23:15:26,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26" (1/1) ... [2020-09-04 23:15:26,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:15:26,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:15:26,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:15:26,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:15:26,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26" (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 [2020-09-04 23:15:26,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:15:26,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:15:26,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:15:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:15:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:15:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:15:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:15:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:15:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:15:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:15:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:15:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:15:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:15:27,005 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:15:27,006 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 23:15:27,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:15:27 BoogieIcfgContainer [2020-09-04 23:15:27,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:15:27,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:15:27,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:15:27,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:15:27,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:15:26" (1/3) ... [2020-09-04 23:15:27,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdbc6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:15:27, skipping insertion in model container [2020-09-04 23:15:27,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:15:26" (2/3) ... [2020-09-04 23:15:27,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdbc6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:15:27, skipping insertion in model container [2020-09-04 23:15:27,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:15:27" (3/3) ... [2020-09-04 23:15:27,041 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-09-04 23:15:27,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:15:27,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:15:27,104 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:15:27,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:15:27,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:15:27,144 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:15:27,145 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:15:27,145 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:15:27,145 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:15:27,146 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:15:27,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:15:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-04 23:15:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-04 23:15:27,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:27,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:27,175 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:27,182 INFO L82 PathProgramCache]: Analyzing trace with hash 576660498, now seen corresponding path program 1 times [2020-09-04 23:15:27,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:27,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423421520] [2020-09-04 23:15:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:27,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:27,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423421520] [2020-09-04 23:15:27,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:15:27,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:15:27,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127592357] [2020-09-04 23:15:27,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:15:27,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:27,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:15:27,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:15:27,468 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-09-04 23:15:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:27,581 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-09-04 23:15:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:15:27,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-04 23:15:27,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:27,593 INFO L225 Difference]: With dead ends: 46 [2020-09-04 23:15:27,594 INFO L226 Difference]: Without dead ends: 25 [2020-09-04 23:15:27,598 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 [2020-09-04 23:15:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-04 23:15:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-09-04 23:15:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-04 23:15:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-04 23:15:27,645 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2020-09-04 23:15:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:27,646 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-04 23:15:27,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:15:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-04 23:15:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 23:15:27,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:27,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:27,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:15:27,648 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:27,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:27,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867886, now seen corresponding path program 1 times [2020-09-04 23:15:27,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:27,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723298318] [2020-09-04 23:15:27,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:15:27,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723298318] [2020-09-04 23:15:27,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:27,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 23:15:27,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350939918] [2020-09-04 23:15:27,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 23:15:27,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:27,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 23:15:27,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:15:27,795 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-09-04 23:15:27,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:27,940 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-04 23:15:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 23:15:27,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-04 23:15:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:27,943 INFO L225 Difference]: With dead ends: 36 [2020-09-04 23:15:27,943 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 23:15:27,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-04 23:15:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 23:15:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-04 23:15:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 23:15:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-04 23:15:27,956 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-09-04 23:15:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:27,956 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-04 23:15:27,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 23:15:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-04 23:15:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 23:15:27,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:27,958 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:27,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:15:27,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:27,960 INFO L82 PathProgramCache]: Analyzing trace with hash -677174382, now seen corresponding path program 2 times [2020-09-04 23:15:27,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:27,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063955008] [2020-09-04 23:15:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 23:15:28,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063955008] [2020-09-04 23:15:28,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:28,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-04 23:15:28,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958973936] [2020-09-04 23:15:28,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 23:15:28,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:28,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 23:15:28,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 23:15:28,100 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2020-09-04 23:15:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:28,306 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-09-04 23:15:28,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 23:15:28,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-09-04 23:15:28,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:28,309 INFO L225 Difference]: With dead ends: 45 [2020-09-04 23:15:28,311 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 23:15:28,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-04 23:15:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 23:15:28,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-09-04 23:15:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-04 23:15:28,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-04 23:15:28,334 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-09-04 23:15:28,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:28,336 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-04 23:15:28,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 23:15:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-04 23:15:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 23:15:28,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:28,339 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:28,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:15:28,340 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:28,341 INFO L82 PathProgramCache]: Analyzing trace with hash 785729966, now seen corresponding path program 3 times [2020-09-04 23:15:28,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:28,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534240695] [2020-09-04 23:15:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 23:15:28,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534240695] [2020-09-04 23:15:28,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:28,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 23:15:28,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505945444] [2020-09-04 23:15:28,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 23:15:28,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:28,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 23:15:28,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:15:28,576 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-09-04 23:15:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:28,748 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-04 23:15:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 23:15:28,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-09-04 23:15:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:28,751 INFO L225 Difference]: With dead ends: 54 [2020-09-04 23:15:28,751 INFO L226 Difference]: Without dead ends: 52 [2020-09-04 23:15:28,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 23:15:28,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-04 23:15:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-04 23:15:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-04 23:15:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-09-04 23:15:28,764 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-09-04 23:15:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:28,764 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-09-04 23:15:28,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 23:15:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-09-04 23:15:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-04 23:15:28,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:28,766 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:28,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 23:15:28,767 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:28,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:28,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1857438482, now seen corresponding path program 4 times [2020-09-04 23:15:28,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:28,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910178422] [2020-09-04 23:15:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-04 23:15:28,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910178422] [2020-09-04 23:15:28,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:28,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-04 23:15:28,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933883676] [2020-09-04 23:15:28,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 23:15:28,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:28,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 23:15:28,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-04 23:15:28,937 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 13 states. [2020-09-04 23:15:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:29,142 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-09-04 23:15:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 23:15:29,143 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-09-04 23:15:29,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:29,145 INFO L225 Difference]: With dead ends: 63 [2020-09-04 23:15:29,145 INFO L226 Difference]: Without dead ends: 61 [2020-09-04 23:15:29,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-09-04 23:15:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-04 23:15:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-09-04 23:15:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-04 23:15:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-09-04 23:15:29,157 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-09-04 23:15:29,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:29,157 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-09-04 23:15:29,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 23:15:29,158 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-09-04 23:15:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-04 23:15:29,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:29,160 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:29,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 23:15:29,160 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:29,161 INFO L82 PathProgramCache]: Analyzing trace with hash -426927570, now seen corresponding path program 5 times [2020-09-04 23:15:29,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:29,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970010588] [2020-09-04 23:15:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-04 23:15:29,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970010588] [2020-09-04 23:15:29,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:29,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-04 23:15:29,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590397257] [2020-09-04 23:15:29,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 23:15:29,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:29,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 23:15:29,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-04 23:15:29,422 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 15 states. [2020-09-04 23:15:29,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:29,690 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-09-04 23:15:29,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 23:15:29,690 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-04 23:15:29,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:29,692 INFO L225 Difference]: With dead ends: 72 [2020-09-04 23:15:29,692 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 23:15:29,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-09-04 23:15:29,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 23:15:29,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-04 23:15:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-04 23:15:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-09-04 23:15:29,716 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-09-04 23:15:29,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:29,718 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-09-04 23:15:29,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 23:15:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-09-04 23:15:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-04 23:15:29,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:29,722 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:29,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 23:15:29,724 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:29,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:29,725 INFO L82 PathProgramCache]: Analyzing trace with hash -32472430, now seen corresponding path program 6 times [2020-09-04 23:15:29,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:29,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079478055] [2020-09-04 23:15:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-04 23:15:29,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079478055] [2020-09-04 23:15:29,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:29,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-04 23:15:29,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104675334] [2020-09-04 23:15:29,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 23:15:29,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:29,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 23:15:29,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-04 23:15:29,993 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 17 states. [2020-09-04 23:15:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:30,325 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-09-04 23:15:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 23:15:30,326 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-09-04 23:15:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:30,328 INFO L225 Difference]: With dead ends: 81 [2020-09-04 23:15:30,328 INFO L226 Difference]: Without dead ends: 79 [2020-09-04 23:15:30,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-09-04 23:15:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-04 23:15:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-09-04 23:15:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-04 23:15:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-09-04 23:15:30,340 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 65 [2020-09-04 23:15:30,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:30,340 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-09-04 23:15:30,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 23:15:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-09-04 23:15:30,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-04 23:15:30,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:30,342 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:30,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 23:15:30,342 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:30,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:30,343 INFO L82 PathProgramCache]: Analyzing trace with hash 872598190, now seen corresponding path program 7 times [2020-09-04 23:15:30,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:30,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439393156] [2020-09-04 23:15:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:30,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:30,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:30,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:30,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:30,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 14 proven. 119 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-04 23:15:30,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439393156] [2020-09-04 23:15:30,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:30,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-04 23:15:30,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666408387] [2020-09-04 23:15:30,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 23:15:30,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:30,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 23:15:30,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-04 23:15:30,628 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 19 states. [2020-09-04 23:15:31,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:31,040 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2020-09-04 23:15:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 23:15:31,041 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2020-09-04 23:15:31,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:31,042 INFO L225 Difference]: With dead ends: 90 [2020-09-04 23:15:31,043 INFO L226 Difference]: Without dead ends: 88 [2020-09-04 23:15:31,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=796, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 23:15:31,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-04 23:15:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-04 23:15:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-04 23:15:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-09-04 23:15:31,055 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 74 [2020-09-04 23:15:31,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:31,056 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-09-04 23:15:31,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 23:15:31,056 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-09-04 23:15:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-04 23:15:31,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:31,058 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:31,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 23:15:31,058 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:31,059 INFO L82 PathProgramCache]: Analyzing trace with hash -299245038, now seen corresponding path program 8 times [2020-09-04 23:15:31,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:31,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360042116] [2020-09-04 23:15:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:31,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:31,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:31,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:31,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:31,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:31,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:31,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:31,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 16 proven. 156 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-04 23:15:31,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360042116] [2020-09-04 23:15:31,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:31,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-04 23:15:31,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748469452] [2020-09-04 23:15:31,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 23:15:31,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:31,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 23:15:31,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-04 23:15:31,416 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 21 states. [2020-09-04 23:15:31,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:31,865 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-09-04 23:15:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-04 23:15:31,865 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-09-04 23:15:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:31,867 INFO L225 Difference]: With dead ends: 99 [2020-09-04 23:15:31,867 INFO L226 Difference]: Without dead ends: 97 [2020-09-04 23:15:31,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=995, Unknown=0, NotChecked=0, Total=1406 [2020-09-04 23:15:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-04 23:15:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-09-04 23:15:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-04 23:15:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-09-04 23:15:31,880 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 83 [2020-09-04 23:15:31,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:31,881 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-09-04 23:15:31,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 23:15:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-09-04 23:15:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-04 23:15:31,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:31,883 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:31,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 23:15:31,883 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:31,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1245914322, now seen corresponding path program 9 times [2020-09-04 23:15:31,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:31,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786340686] [2020-09-04 23:15:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 18 proven. 198 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-04 23:15:32,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786340686] [2020-09-04 23:15:32,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:32,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-04 23:15:32,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865792590] [2020-09-04 23:15:32,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 23:15:32,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:32,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 23:15:32,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-04 23:15:32,206 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 23 states. [2020-09-04 23:15:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:32,730 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-09-04 23:15:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-04 23:15:32,730 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2020-09-04 23:15:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:32,732 INFO L225 Difference]: With dead ends: 108 [2020-09-04 23:15:32,732 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 23:15:32,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=506, Invalid=1216, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 23:15:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 23:15:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-09-04 23:15:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-04 23:15:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2020-09-04 23:15:32,746 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 92 [2020-09-04 23:15:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:32,747 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2020-09-04 23:15:32,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 23:15:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2020-09-04 23:15:32,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-04 23:15:32,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:32,749 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:32,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 23:15:32,749 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:32,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:32,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2038063506, now seen corresponding path program 10 times [2020-09-04 23:15:32,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:32,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830918423] [2020-09-04 23:15:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-04 23:15:33,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830918423] [2020-09-04 23:15:33,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:33,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-04 23:15:33,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185749788] [2020-09-04 23:15:33,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 23:15:33,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:33,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 23:15:33,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-04 23:15:33,141 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 25 states. [2020-09-04 23:15:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:33,800 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2020-09-04 23:15:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 23:15:33,800 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-09-04 23:15:33,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:33,803 INFO L225 Difference]: With dead ends: 117 [2020-09-04 23:15:33,803 INFO L226 Difference]: Without dead ends: 115 [2020-09-04 23:15:33,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=611, Invalid=1459, Unknown=0, NotChecked=0, Total=2070 [2020-09-04 23:15:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-04 23:15:33,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-09-04 23:15:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-04 23:15:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-09-04 23:15:33,829 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 101 [2020-09-04 23:15:33,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:33,830 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-09-04 23:15:33,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 23:15:33,830 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-09-04 23:15:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-04 23:15:33,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:33,838 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:33,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 23:15:33,839 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:33,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:33,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2017708974, now seen corresponding path program 11 times [2020-09-04 23:15:33,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:33,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604879770] [2020-09-04 23:15:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 22 proven. 297 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-04 23:15:34,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604879770] [2020-09-04 23:15:34,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:34,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-04 23:15:34,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107529288] [2020-09-04 23:15:34,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-04 23:15:34,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:34,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-04 23:15:34,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-04 23:15:34,292 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 27 states. [2020-09-04 23:15:34,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:34,973 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2020-09-04 23:15:34,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 23:15:34,973 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 110 [2020-09-04 23:15:34,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:34,975 INFO L225 Difference]: With dead ends: 126 [2020-09-04 23:15:34,975 INFO L226 Difference]: Without dead ends: 124 [2020-09-04 23:15:34,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=726, Invalid=1724, Unknown=0, NotChecked=0, Total=2450 [2020-09-04 23:15:34,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-04 23:15:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-09-04 23:15:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-04 23:15:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2020-09-04 23:15:34,988 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 110 [2020-09-04 23:15:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:34,988 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2020-09-04 23:15:34,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-04 23:15:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2020-09-04 23:15:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-04 23:15:34,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:34,990 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:34,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 23:15:34,991 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:34,991 INFO L82 PathProgramCache]: Analyzing trace with hash 746193170, now seen corresponding path program 12 times [2020-09-04 23:15:34,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:34,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116192636] [2020-09-04 23:15:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 24 proven. 354 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-09-04 23:15:35,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116192636] [2020-09-04 23:15:35,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:35,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-04 23:15:35,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298082362] [2020-09-04 23:15:35,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 23:15:35,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:35,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 23:15:35,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-09-04 23:15:35,468 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 29 states. [2020-09-04 23:15:36,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:36,251 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2020-09-04 23:15:36,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-04 23:15:36,252 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 119 [2020-09-04 23:15:36,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:36,253 INFO L225 Difference]: With dead ends: 135 [2020-09-04 23:15:36,254 INFO L226 Difference]: Without dead ends: 133 [2020-09-04 23:15:36,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=851, Invalid=2011, Unknown=0, NotChecked=0, Total=2862 [2020-09-04 23:15:36,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-04 23:15:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-09-04 23:15:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-04 23:15:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-09-04 23:15:36,265 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 119 [2020-09-04 23:15:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:36,265 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-09-04 23:15:36,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 23:15:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-09-04 23:15:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-04 23:15:36,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:36,267 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:36,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 23:15:36,268 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:36,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1981783086, now seen corresponding path program 13 times [2020-09-04 23:15:36,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:36,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072632444] [2020-09-04 23:15:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:15:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 26 proven. 416 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-09-04 23:15:36,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072632444] [2020-09-04 23:15:36,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:36,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-04 23:15:36,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45041033] [2020-09-04 23:15:36,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 23:15:36,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:36,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 23:15:36,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-09-04 23:15:36,791 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 31 states. [2020-09-04 23:15:37,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:37,697 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2020-09-04 23:15:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 23:15:37,698 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 128 [2020-09-04 23:15:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:37,700 INFO L225 Difference]: With dead ends: 144 [2020-09-04 23:15:37,700 INFO L226 Difference]: Without dead ends: 142 [2020-09-04 23:15:37,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=986, Invalid=2320, Unknown=0, NotChecked=0, Total=3306 [2020-09-04 23:15:37,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-04 23:15:37,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-09-04 23:15:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-04 23:15:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2020-09-04 23:15:37,712 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 128 [2020-09-04 23:15:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:37,713 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2020-09-04 23:15:37,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 23:15:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2020-09-04 23:15:37,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-04 23:15:37,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:37,714 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:37,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 23:15:37,715 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:37,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:37,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1705033874, now seen corresponding path program 14 times [2020-09-04 23:15:37,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:37,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586998998] [2020-09-04 23:15:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:15:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:15:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 28 proven. 483 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-09-04 23:15:38,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586998998] [2020-09-04 23:15:38,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:38,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-04 23:15:38,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146809767] [2020-09-04 23:15:38,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-04 23:15:38,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:38,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-04 23:15:38,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 23:15:38,335 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 33 states. [2020-09-04 23:15:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:39,341 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-09-04 23:15:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-04 23:15:39,341 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 137 [2020-09-04 23:15:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:39,343 INFO L225 Difference]: With dead ends: 153 [2020-09-04 23:15:39,343 INFO L226 Difference]: Without dead ends: 151 [2020-09-04 23:15:39,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1131, Invalid=2651, Unknown=0, NotChecked=0, Total=3782 [2020-09-04 23:15:39,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-04 23:15:39,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-09-04 23:15:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-04 23:15:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2020-09-04 23:15:39,361 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 137 [2020-09-04 23:15:39,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:39,361 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2020-09-04 23:15:39,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-04 23:15:39,362 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2020-09-04 23:15:39,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-04 23:15:39,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:39,364 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:39,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 23:15:39,364 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:39,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:39,365 INFO L82 PathProgramCache]: Analyzing trace with hash 400051374, now seen corresponding path program 15 times [2020-09-04 23:15:39,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:39,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657886249] [2020-09-04 23:15:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:39,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:15:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:15:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:15:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 30 proven. 555 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-04 23:15:40,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657886249] [2020-09-04 23:15:40,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:40,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-09-04 23:15:40,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147447126] [2020-09-04 23:15:40,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-04 23:15:40,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:40,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-04 23:15:40,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 23:15:40,048 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 35 states. [2020-09-04 23:15:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:41,206 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2020-09-04 23:15:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-04 23:15:41,208 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 146 [2020-09-04 23:15:41,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:41,209 INFO L225 Difference]: With dead ends: 162 [2020-09-04 23:15:41,210 INFO L226 Difference]: Without dead ends: 160 [2020-09-04 23:15:41,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1286, Invalid=3004, Unknown=0, NotChecked=0, Total=4290 [2020-09-04 23:15:41,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-04 23:15:41,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-09-04 23:15:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 23:15:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2020-09-04 23:15:41,220 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 146 [2020-09-04 23:15:41,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:41,221 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2020-09-04 23:15:41,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-04 23:15:41,221 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2020-09-04 23:15:41,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-04 23:15:41,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:41,222 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:41,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 23:15:41,223 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:41,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:41,223 INFO L82 PathProgramCache]: Analyzing trace with hash -714694638, now seen corresponding path program 16 times [2020-09-04 23:15:41,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:41,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305983602] [2020-09-04 23:15:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:15:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:15:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:15:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:15:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 32 proven. 632 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-09-04 23:15:41,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305983602] [2020-09-04 23:15:41,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:41,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-09-04 23:15:41,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438549741] [2020-09-04 23:15:42,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-04 23:15:42,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:42,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-04 23:15:42,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 23:15:42,001 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 37 states. [2020-09-04 23:15:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:43,329 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2020-09-04 23:15:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-09-04 23:15:43,330 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 155 [2020-09-04 23:15:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:43,332 INFO L225 Difference]: With dead ends: 171 [2020-09-04 23:15:43,332 INFO L226 Difference]: Without dead ends: 169 [2020-09-04 23:15:43,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1451, Invalid=3379, Unknown=0, NotChecked=0, Total=4830 [2020-09-04 23:15:43,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-04 23:15:43,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-09-04 23:15:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-04 23:15:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-09-04 23:15:43,344 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 155 [2020-09-04 23:15:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:43,345 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-09-04 23:15:43,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-04 23:15:43,345 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-09-04 23:15:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-04 23:15:43,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:43,346 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:43,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 23:15:43,347 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:43,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:43,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1275732690, now seen corresponding path program 17 times [2020-09-04 23:15:43,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:43,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137011445] [2020-09-04 23:15:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:15:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:15:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:15:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:15:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:15:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 34 proven. 714 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-09-04 23:15:44,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137011445] [2020-09-04 23:15:44,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:44,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-09-04 23:15:44,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468311986] [2020-09-04 23:15:44,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 23:15:44,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:44,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 23:15:44,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 23:15:44,128 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 39 states. [2020-09-04 23:15:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:45,496 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2020-09-04 23:15:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-09-04 23:15:45,497 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 164 [2020-09-04 23:15:45,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:45,499 INFO L225 Difference]: With dead ends: 180 [2020-09-04 23:15:45,499 INFO L226 Difference]: Without dead ends: 178 [2020-09-04 23:15:45,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1626, Invalid=3776, Unknown=0, NotChecked=0, Total=5402 [2020-09-04 23:15:45,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-04 23:15:45,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-09-04 23:15:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-04 23:15:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-09-04 23:15:45,511 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 164 [2020-09-04 23:15:45,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:45,511 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-09-04 23:15:45,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 23:15:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-09-04 23:15:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-04 23:15:45,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:45,513 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:45,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 23:15:45,514 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:45,514 INFO L82 PathProgramCache]: Analyzing trace with hash -29122670, now seen corresponding path program 18 times [2020-09-04 23:15:45,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:45,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151837328] [2020-09-04 23:15:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:15:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:15:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:15:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:15:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:15:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:15:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1449 backedges. 36 proven. 801 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-09-04 23:15:46,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151837328] [2020-09-04 23:15:46,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:46,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-09-04 23:15:46,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797500542] [2020-09-04 23:15:46,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 23:15:46,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:46,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 23:15:46,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 23:15:46,456 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 41 states. [2020-09-04 23:15:47,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:47,936 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2020-09-04 23:15:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-09-04 23:15:47,937 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 173 [2020-09-04 23:15:47,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:47,939 INFO L225 Difference]: With dead ends: 189 [2020-09-04 23:15:47,939 INFO L226 Difference]: Without dead ends: 187 [2020-09-04 23:15:47,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1811, Invalid=4195, Unknown=0, NotChecked=0, Total=6006 [2020-09-04 23:15:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-04 23:15:47,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-09-04 23:15:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-04 23:15:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2020-09-04 23:15:47,951 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 173 [2020-09-04 23:15:47,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:47,952 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2020-09-04 23:15:47,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 23:15:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2020-09-04 23:15:47,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-04 23:15:47,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:47,954 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:47,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 23:15:47,954 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:47,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:47,954 INFO L82 PathProgramCache]: Analyzing trace with hash 251678126, now seen corresponding path program 19 times [2020-09-04 23:15:47,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:47,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922223439] [2020-09-04 23:15:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:15:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:15:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:15:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:15:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:15:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:15:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:15:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1615 backedges. 38 proven. 893 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-09-04 23:15:49,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922223439] [2020-09-04 23:15:49,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:49,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-09-04 23:15:49,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034082720] [2020-09-04 23:15:49,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-09-04 23:15:49,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:49,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-09-04 23:15:49,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 23:15:49,068 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 43 states. [2020-09-04 23:15:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:50,578 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2020-09-04 23:15:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-09-04 23:15:50,579 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 182 [2020-09-04 23:15:50,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:50,581 INFO L225 Difference]: With dead ends: 198 [2020-09-04 23:15:50,582 INFO L226 Difference]: Without dead ends: 196 [2020-09-04 23:15:50,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2006, Invalid=4636, Unknown=0, NotChecked=0, Total=6642 [2020-09-04 23:15:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-04 23:15:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-09-04 23:15:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-04 23:15:50,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2020-09-04 23:15:50,595 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 182 [2020-09-04 23:15:50,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:50,595 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2020-09-04 23:15:50,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-09-04 23:15:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2020-09-04 23:15:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-04 23:15:50,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:50,597 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:50,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 23:15:50,597 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:50,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:50,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1263550702, now seen corresponding path program 20 times [2020-09-04 23:15:50,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:50,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399101887] [2020-09-04 23:15:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:15:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:15:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:15:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:15:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:15:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:15:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:15:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:15:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 40 proven. 990 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-09-04 23:15:51,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399101887] [2020-09-04 23:15:51,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:51,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-09-04 23:15:51,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586867214] [2020-09-04 23:15:51,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-04 23:15:51,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:51,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-04 23:15:51,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 23:15:51,632 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 45 states. [2020-09-04 23:15:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:53,476 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2020-09-04 23:15:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-09-04 23:15:53,476 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 191 [2020-09-04 23:15:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:53,478 INFO L225 Difference]: With dead ends: 207 [2020-09-04 23:15:53,478 INFO L226 Difference]: Without dead ends: 205 [2020-09-04 23:15:53,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2211, Invalid=5099, Unknown=0, NotChecked=0, Total=7310 [2020-09-04 23:15:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-04 23:15:53,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-09-04 23:15:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-04 23:15:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2020-09-04 23:15:53,493 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 191 [2020-09-04 23:15:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:53,493 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2020-09-04 23:15:53,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-04 23:15:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2020-09-04 23:15:53,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 23:15:53,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:53,495 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:53,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 23:15:53,495 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:53,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:53,496 INFO L82 PathProgramCache]: Analyzing trace with hash -612393426, now seen corresponding path program 21 times [2020-09-04 23:15:53,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:53,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306049545] [2020-09-04 23:15:53,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:15:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:15:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:15:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:15:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:15:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:15:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:15:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:15:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:15:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 42 proven. 1092 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-09-04 23:15:54,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306049545] [2020-09-04 23:15:54,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:54,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-09-04 23:15:54,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709016100] [2020-09-04 23:15:54,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-09-04 23:15:54,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:54,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-09-04 23:15:54,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 23:15:54,626 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 47 states. [2020-09-04 23:15:56,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:15:56,650 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2020-09-04 23:15:56,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-09-04 23:15:56,651 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 200 [2020-09-04 23:15:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:15:56,654 INFO L225 Difference]: With dead ends: 216 [2020-09-04 23:15:56,654 INFO L226 Difference]: Without dead ends: 214 [2020-09-04 23:15:56,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2426, Invalid=5584, Unknown=0, NotChecked=0, Total=8010 [2020-09-04 23:15:56,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-04 23:15:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-09-04 23:15:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-04 23:15:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2020-09-04 23:15:56,662 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 200 [2020-09-04 23:15:56,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:15:56,663 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2020-09-04 23:15:56,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-09-04 23:15:56,663 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2020-09-04 23:15:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-04 23:15:56,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:15:56,664 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:15:56,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 23:15:56,665 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:15:56,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:15:56,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1625096558, now seen corresponding path program 22 times [2020-09-04 23:15:56,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:15:56,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24379811] [2020-09-04 23:15:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:15:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:15:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:15:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:15:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:15:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:15:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:15:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:15:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:15:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:15:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:15:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:15:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:15:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:15:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:15:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:15:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:15:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:15:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:15:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:15:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:15:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:15:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:15:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:15:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:15:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2167 backedges. 44 proven. 1199 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-09-04 23:15:57,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24379811] [2020-09-04 23:15:57,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:15:57,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-09-04 23:15:57,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909705551] [2020-09-04 23:15:57,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-09-04 23:15:57,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:15:57,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-09-04 23:15:57,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 23:15:57,933 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 49 states. [2020-09-04 23:16:00,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:00,104 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2020-09-04 23:16:00,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-09-04 23:16:00,105 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 209 [2020-09-04 23:16:00,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:00,107 INFO L225 Difference]: With dead ends: 225 [2020-09-04 23:16:00,107 INFO L226 Difference]: Without dead ends: 223 [2020-09-04 23:16:00,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2651, Invalid=6091, Unknown=0, NotChecked=0, Total=8742 [2020-09-04 23:16:00,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-09-04 23:16:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-09-04 23:16:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-09-04 23:16:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2020-09-04 23:16:00,118 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 209 [2020-09-04 23:16:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:00,118 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2020-09-04 23:16:00,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-09-04 23:16:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2020-09-04 23:16:00,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-04 23:16:00,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:00,120 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:00,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 23:16:00,121 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:00,121 INFO L82 PathProgramCache]: Analyzing trace with hash 972803758, now seen corresponding path program 23 times [2020-09-04 23:16:00,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:00,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065030827] [2020-09-04 23:16:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 46 proven. 1311 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-09-04 23:16:01,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065030827] [2020-09-04 23:16:01,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:01,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-09-04 23:16:01,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498595214] [2020-09-04 23:16:01,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-09-04 23:16:01,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:01,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-09-04 23:16:01,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=1922, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 23:16:01,537 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 51 states. [2020-09-04 23:16:03,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:03,883 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2020-09-04 23:16:03,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-09-04 23:16:03,884 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 218 [2020-09-04 23:16:03,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:03,886 INFO L225 Difference]: With dead ends: 234 [2020-09-04 23:16:03,886 INFO L226 Difference]: Without dead ends: 232 [2020-09-04 23:16:03,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2886, Invalid=6620, Unknown=0, NotChecked=0, Total=9506 [2020-09-04 23:16:03,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-04 23:16:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-09-04 23:16:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-04 23:16:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2020-09-04 23:16:03,898 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 218 [2020-09-04 23:16:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:03,898 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2020-09-04 23:16:03,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-09-04 23:16:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2020-09-04 23:16:03,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-04 23:16:03,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:03,900 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:03,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 23:16:03,901 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:03,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:03,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1240113646, now seen corresponding path program 24 times [2020-09-04 23:16:03,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:03,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930475255] [2020-09-04 23:16:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:16:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 48 proven. 1428 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-09-04 23:16:05,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930475255] [2020-09-04 23:16:05,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:05,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-09-04 23:16:05,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773775313] [2020-09-04 23:16:05,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-09-04 23:16:05,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:05,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-09-04 23:16:05,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2077, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 23:16:05,420 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 53 states. [2020-09-04 23:16:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:07,975 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2020-09-04 23:16:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-09-04 23:16:07,976 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 227 [2020-09-04 23:16:07,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:07,978 INFO L225 Difference]: With dead ends: 243 [2020-09-04 23:16:07,979 INFO L226 Difference]: Without dead ends: 241 [2020-09-04 23:16:07,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3131, Invalid=7171, Unknown=0, NotChecked=0, Total=10302 [2020-09-04 23:16:07,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-04 23:16:07,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-09-04 23:16:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-04 23:16:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2020-09-04 23:16:07,991 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 227 [2020-09-04 23:16:07,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:07,992 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2020-09-04 23:16:07,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-09-04 23:16:07,992 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2020-09-04 23:16:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-04 23:16:07,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:07,994 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:07,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 23:16:07,995 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:07,995 INFO L82 PathProgramCache]: Analyzing trace with hash 956096302, now seen corresponding path program 25 times [2020-09-04 23:16:07,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:07,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859271265] [2020-09-04 23:16:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:16:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:16:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2800 backedges. 50 proven. 1550 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-09-04 23:16:09,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859271265] [2020-09-04 23:16:09,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:09,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-09-04 23:16:09,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198059905] [2020-09-04 23:16:09,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-09-04 23:16:09,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:09,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-09-04 23:16:09,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=2238, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 23:16:09,563 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 55 states. [2020-09-04 23:16:12,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:12,544 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2020-09-04 23:16:12,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-09-04 23:16:12,545 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 236 [2020-09-04 23:16:12,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:12,548 INFO L225 Difference]: With dead ends: 252 [2020-09-04 23:16:12,548 INFO L226 Difference]: Without dead ends: 250 [2020-09-04 23:16:12,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1973 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3386, Invalid=7744, Unknown=0, NotChecked=0, Total=11130 [2020-09-04 23:16:12,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-09-04 23:16:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-09-04 23:16:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-09-04 23:16:12,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2020-09-04 23:16:12,559 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 236 [2020-09-04 23:16:12,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:12,560 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2020-09-04 23:16:12,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-09-04 23:16:12,560 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2020-09-04 23:16:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-04 23:16:12,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:12,562 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:12,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 23:16:12,562 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:12,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1006707310, now seen corresponding path program 26 times [2020-09-04 23:16:12,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:12,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718384472] [2020-09-04 23:16:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:16:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:16:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:16:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 52 proven. 1677 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-09-04 23:16:14,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718384472] [2020-09-04 23:16:14,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:14,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-09-04 23:16:14,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420914626] [2020-09-04 23:16:14,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-09-04 23:16:14,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:14,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-09-04 23:16:14,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 23:16:14,387 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 57 states. [2020-09-04 23:16:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:17,483 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2020-09-04 23:16:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-09-04 23:16:17,484 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 245 [2020-09-04 23:16:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:17,485 INFO L225 Difference]: With dead ends: 261 [2020-09-04 23:16:17,486 INFO L226 Difference]: Without dead ends: 259 [2020-09-04 23:16:17,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3651, Invalid=8339, Unknown=0, NotChecked=0, Total=11990 [2020-09-04 23:16:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-04 23:16:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-09-04 23:16:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-09-04 23:16:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2020-09-04 23:16:17,498 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 245 [2020-09-04 23:16:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:17,499 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2020-09-04 23:16:17,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-09-04 23:16:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2020-09-04 23:16:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-04 23:16:17,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:17,501 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:17,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 23:16:17,501 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1426771886, now seen corresponding path program 27 times [2020-09-04 23:16:17,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:17,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771629971] [2020-09-04 23:16:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:16:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:16:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:16:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:16:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 54 proven. 1809 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-09-04 23:16:19,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771629971] [2020-09-04 23:16:19,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:19,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-09-04 23:16:19,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878490783] [2020-09-04 23:16:19,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-09-04 23:16:19,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:19,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-09-04 23:16:19,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=844, Invalid=2578, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 23:16:19,546 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 59 states. [2020-09-04 23:16:22,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:22,978 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2020-09-04 23:16:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-09-04 23:16:22,979 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 254 [2020-09-04 23:16:22,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:22,981 INFO L225 Difference]: With dead ends: 270 [2020-09-04 23:16:22,981 INFO L226 Difference]: Without dead ends: 268 [2020-09-04 23:16:22,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3926, Invalid=8956, Unknown=0, NotChecked=0, Total=12882 [2020-09-04 23:16:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-04 23:16:22,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-09-04 23:16:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-04 23:16:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2020-09-04 23:16:22,992 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 254 [2020-09-04 23:16:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:22,992 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2020-09-04 23:16:22,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-09-04 23:16:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2020-09-04 23:16:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-04 23:16:22,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:22,994 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:22,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 23:16:22,995 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:22,995 INFO L82 PathProgramCache]: Analyzing trace with hash -447251182, now seen corresponding path program 28 times [2020-09-04 23:16:22,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:22,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602817787] [2020-09-04 23:16:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:24,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:16:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:25,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:16:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:25,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:16:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:25,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:16:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:25,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:16:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3514 backedges. 56 proven. 1946 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-09-04 23:16:25,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602817787] [2020-09-04 23:16:25,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:25,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-09-04 23:16:25,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256023102] [2020-09-04 23:16:25,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-09-04 23:16:25,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:25,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-09-04 23:16:25,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=2757, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 23:16:25,050 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 61 states. [2020-09-04 23:16:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:28,547 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2020-09-04 23:16:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-09-04 23:16:28,548 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 263 [2020-09-04 23:16:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:28,550 INFO L225 Difference]: With dead ends: 279 [2020-09-04 23:16:28,550 INFO L226 Difference]: Without dead ends: 277 [2020-09-04 23:16:28,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4211, Invalid=9595, Unknown=0, NotChecked=0, Total=13806 [2020-09-04 23:16:28,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-04 23:16:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-09-04 23:16:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-04 23:16:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2020-09-04 23:16:28,562 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 263 [2020-09-04 23:16:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:28,562 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2020-09-04 23:16:28,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-09-04 23:16:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2020-09-04 23:16:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-04 23:16:28,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:28,564 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:28,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 23:16:28,565 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:28,565 INFO L82 PathProgramCache]: Analyzing trace with hash -122838994, now seen corresponding path program 29 times [2020-09-04 23:16:28,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:28,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223438957] [2020-09-04 23:16:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:16:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:16:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:16:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:16:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:16:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:16:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3770 backedges. 58 proven. 2088 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-09-04 23:16:30,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223438957] [2020-09-04 23:16:30,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:30,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-09-04 23:16:30,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135859273] [2020-09-04 23:16:30,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-09-04 23:16:30,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:30,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-09-04 23:16:30,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 23:16:30,885 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 63 states. [2020-09-04 23:16:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:34,631 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2020-09-04 23:16:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-09-04 23:16:34,632 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 272 [2020-09-04 23:16:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:34,634 INFO L225 Difference]: With dead ends: 288 [2020-09-04 23:16:34,634 INFO L226 Difference]: Without dead ends: 286 [2020-09-04 23:16:34,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2637 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4506, Invalid=10256, Unknown=0, NotChecked=0, Total=14762 [2020-09-04 23:16:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-04 23:16:34,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-09-04 23:16:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-04 23:16:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2020-09-04 23:16:34,647 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 272 [2020-09-04 23:16:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:34,647 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2020-09-04 23:16:34,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-09-04 23:16:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2020-09-04 23:16:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-09-04 23:16:34,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:34,649 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:34,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 23:16:34,650 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:34,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:34,650 INFO L82 PathProgramCache]: Analyzing trace with hash 144129170, now seen corresponding path program 30 times [2020-09-04 23:16:34,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:34,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78380401] [2020-09-04 23:16:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:16:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:16:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:16:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:16:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:16:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:16:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:16:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4035 backedges. 60 proven. 2235 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-09-04 23:16:36,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78380401] [2020-09-04 23:16:36,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:36,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-09-04 23:16:36,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478866521] [2020-09-04 23:16:36,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-09-04 23:16:36,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:36,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-09-04 23:16:36,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 23:16:36,996 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 65 states. [2020-09-04 23:16:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:41,200 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2020-09-04 23:16:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-09-04 23:16:41,201 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 281 [2020-09-04 23:16:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:41,203 INFO L225 Difference]: With dead ends: 297 [2020-09-04 23:16:41,203 INFO L226 Difference]: Without dead ends: 295 [2020-09-04 23:16:41,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2818 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4811, Invalid=10939, Unknown=0, NotChecked=0, Total=15750 [2020-09-04 23:16:41,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-04 23:16:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-09-04 23:16:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-09-04 23:16:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2020-09-04 23:16:41,215 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 281 [2020-09-04 23:16:41,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:41,216 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2020-09-04 23:16:41,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-09-04 23:16:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2020-09-04 23:16:41,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-04 23:16:41,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:41,218 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:41,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 23:16:41,219 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:41,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:41,219 INFO L82 PathProgramCache]: Analyzing trace with hash -59944786, now seen corresponding path program 31 times [2020-09-04 23:16:41,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:41,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726118683] [2020-09-04 23:16:41,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:16:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:16:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:16:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:16:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:16:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:16:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:16:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:16:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 62 proven. 2387 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-09-04 23:16:43,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726118683] [2020-09-04 23:16:43,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:43,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-09-04 23:16:43,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864019307] [2020-09-04 23:16:43,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-09-04 23:16:43,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:43,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-09-04 23:16:43,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3330, Unknown=0, NotChecked=0, Total=4422 [2020-09-04 23:16:43,767 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 67 states. [2020-09-04 23:16:48,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:48,003 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2020-09-04 23:16:48,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-09-04 23:16:48,003 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 290 [2020-09-04 23:16:48,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:48,005 INFO L225 Difference]: With dead ends: 306 [2020-09-04 23:16:48,006 INFO L226 Difference]: Without dead ends: 304 [2020-09-04 23:16:48,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=5126, Invalid=11644, Unknown=0, NotChecked=0, Total=16770 [2020-09-04 23:16:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-04 23:16:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2020-09-04 23:16:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-09-04 23:16:48,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2020-09-04 23:16:48,019 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 290 [2020-09-04 23:16:48,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:48,020 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2020-09-04 23:16:48,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-09-04 23:16:48,020 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2020-09-04 23:16:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-04 23:16:48,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:48,022 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:48,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 23:16:48,022 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:48,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:48,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1849039890, now seen corresponding path program 32 times [2020-09-04 23:16:48,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:48,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535442006] [2020-09-04 23:16:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:16:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:16:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:16:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:16:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:16:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:16:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:16:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:16:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:16:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 64 proven. 2544 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-09-04 23:16:50,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535442006] [2020-09-04 23:16:50,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:50,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-09-04 23:16:50,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453521360] [2020-09-04 23:16:50,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-09-04 23:16:50,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:50,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-09-04 23:16:50,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 23:16:50,768 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 69 states. [2020-09-04 23:16:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:16:55,289 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2020-09-04 23:16:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-09-04 23:16:55,290 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 299 [2020-09-04 23:16:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:16:55,292 INFO L225 Difference]: With dead ends: 315 [2020-09-04 23:16:55,292 INFO L226 Difference]: Without dead ends: 313 [2020-09-04 23:16:55,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3198 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=5451, Invalid=12371, Unknown=0, NotChecked=0, Total=17822 [2020-09-04 23:16:55,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-09-04 23:16:55,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2020-09-04 23:16:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-09-04 23:16:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2020-09-04 23:16:55,305 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 299 [2020-09-04 23:16:55,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:16:55,305 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2020-09-04 23:16:55,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-09-04 23:16:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2020-09-04 23:16:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-09-04 23:16:55,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:16:55,308 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:16:55,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 23:16:55,308 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:16:55,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:16:55,308 INFO L82 PathProgramCache]: Analyzing trace with hash 651288878, now seen corresponding path program 33 times [2020-09-04 23:16:55,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:16:55,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619447407] [2020-09-04 23:16:55,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:16:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:16:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:16:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:16:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:16:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:16:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:16:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:16:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:16:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:16:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:16:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:16:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:16:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:16:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:16:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:16:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:16:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:16:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:16:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:16:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:16:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:16:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:16:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:16:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:16:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:16:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:16:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:16:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:16:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:16:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:16:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:16:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:16:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:16:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:16:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:16:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4884 backedges. 66 proven. 2706 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-09-04 23:16:58,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619447407] [2020-09-04 23:16:58,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:16:58,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-09-04 23:16:58,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304460476] [2020-09-04 23:16:58,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-09-04 23:16:58,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:16:58,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-09-04 23:16:58,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=3742, Unknown=0, NotChecked=0, Total=4970 [2020-09-04 23:16:58,162 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 71 states. [2020-09-04 23:17:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:03,212 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2020-09-04 23:17:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-09-04 23:17:03,212 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 308 [2020-09-04 23:17:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:03,215 INFO L225 Difference]: With dead ends: 324 [2020-09-04 23:17:03,216 INFO L226 Difference]: Without dead ends: 322 [2020-09-04 23:17:03,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3397 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=5786, Invalid=13120, Unknown=0, NotChecked=0, Total=18906 [2020-09-04 23:17:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-09-04 23:17:03,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2020-09-04 23:17:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-09-04 23:17:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2020-09-04 23:17:03,228 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 308 [2020-09-04 23:17:03,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:03,228 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2020-09-04 23:17:03,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-09-04 23:17:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2020-09-04 23:17:03,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-04 23:17:03,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:03,231 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:03,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-04 23:17:03,231 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:03,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:03,232 INFO L82 PathProgramCache]: Analyzing trace with hash 682367890, now seen corresponding path program 34 times [2020-09-04 23:17:03,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:03,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392144060] [2020-09-04 23:17:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:17:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:17:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:17:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:17:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:17:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:17:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:17:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:17:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:17:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:17:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:17:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:17:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:17:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:17:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:17:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:17:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:17:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:17:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:17:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:17:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:17:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:17:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:17:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:17:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:17:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:17:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:17:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:17:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:17:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:17:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:17:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:17:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:17:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:17:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 68 proven. 2873 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-09-04 23:17:06,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392144060] [2020-09-04 23:17:06,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:06,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-09-04 23:17:06,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255959558] [2020-09-04 23:17:06,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-09-04 23:17:06,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:06,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-09-04 23:17:06,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=3957, Unknown=0, NotChecked=0, Total=5256 [2020-09-04 23:17:06,295 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 73 states. [2020-09-04 23:17:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:11,574 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2020-09-04 23:17:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-09-04 23:17:11,575 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 317 [2020-09-04 23:17:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:11,578 INFO L225 Difference]: With dead ends: 333 [2020-09-04 23:17:11,578 INFO L226 Difference]: Without dead ends: 331 [2020-09-04 23:17:11,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=6131, Invalid=13891, Unknown=0, NotChecked=0, Total=20022 [2020-09-04 23:17:11,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-09-04 23:17:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2020-09-04 23:17:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-09-04 23:17:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2020-09-04 23:17:11,590 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 317 [2020-09-04 23:17:11,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:11,590 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2020-09-04 23:17:11,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-09-04 23:17:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2020-09-04 23:17:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-09-04 23:17:11,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:11,593 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:11,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-04 23:17:11,593 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:11,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:11,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1402777170, now seen corresponding path program 35 times [2020-09-04 23:17:11,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:11,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17865152] [2020-09-04 23:17:11,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:17:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:17:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:17:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:17:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:17:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:17:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:17:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:17:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:17:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:17:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:17:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:17:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:17:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:17:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:17:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:17:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:17:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:17:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:17:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:17:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:17:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:17:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:17:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:17:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:17:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:17:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:17:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:17:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:17:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:17:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:17:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:17:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:17:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:17:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:17:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5495 backedges. 70 proven. 3045 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-09-04 23:17:14,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17865152] [2020-09-04 23:17:14,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:14,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-09-04 23:17:14,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267293225] [2020-09-04 23:17:14,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-09-04 23:17:14,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:14,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-09-04 23:17:14,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1372, Invalid=4178, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 23:17:14,965 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 75 states. [2020-09-04 23:17:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:20,687 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2020-09-04 23:17:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-09-04 23:17:20,688 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 326 [2020-09-04 23:17:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:20,690 INFO L225 Difference]: With dead ends: 342 [2020-09-04 23:17:20,690 INFO L226 Difference]: Without dead ends: 340 [2020-09-04 23:17:20,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3813 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=6486, Invalid=14684, Unknown=0, NotChecked=0, Total=21170 [2020-09-04 23:17:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-09-04 23:17:20,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2020-09-04 23:17:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-09-04 23:17:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2020-09-04 23:17:20,702 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 326 [2020-09-04 23:17:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:20,702 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2020-09-04 23:17:20,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-09-04 23:17:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2020-09-04 23:17:20,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-09-04 23:17:20,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:20,705 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:20,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-09-04 23:17:20,705 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:20,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1670300910, now seen corresponding path program 36 times [2020-09-04 23:17:20,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:20,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350377388] [2020-09-04 23:17:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:17:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:17:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:17:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:17:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:17:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:17:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:17:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:17:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:17:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:17:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:17:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:17:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:17:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:17:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:17:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:17:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:17:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:17:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:17:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:17:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:17:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:17:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:17:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:17:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:17:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:17:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:17:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:17:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:17:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:17:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:17:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:17:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:17:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:17:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:17:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:17:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 72 proven. 3222 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-09-04 23:17:24,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350377388] [2020-09-04 23:17:24,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:24,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-09-04 23:17:24,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545276514] [2020-09-04 23:17:24,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-09-04 23:17:24,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:24,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-09-04 23:17:24,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=4405, Unknown=0, NotChecked=0, Total=5852 [2020-09-04 23:17:24,205 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 77 states. [2020-09-04 23:17:29,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:29,914 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2020-09-04 23:17:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-09-04 23:17:29,915 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 335 [2020-09-04 23:17:29,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:29,918 INFO L225 Difference]: With dead ends: 351 [2020-09-04 23:17:29,918 INFO L226 Difference]: Without dead ends: 349 [2020-09-04 23:17:29,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4030 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=6851, Invalid=15499, Unknown=0, NotChecked=0, Total=22350 [2020-09-04 23:17:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-04 23:17:29,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-09-04 23:17:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-09-04 23:17:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2020-09-04 23:17:29,930 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 335 [2020-09-04 23:17:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:29,931 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2020-09-04 23:17:29,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-09-04 23:17:29,931 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2020-09-04 23:17:29,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-09-04 23:17:29,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:29,934 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:29,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-04 23:17:29,934 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:29,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:29,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1347837394, now seen corresponding path program 37 times [2020-09-04 23:17:29,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:29,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541972326] [2020-09-04 23:17:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:17:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:17:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:17:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:17:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:17:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:17:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:17:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:17:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:17:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:17:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:17:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:17:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:17:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:17:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:17:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:17:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:17:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:17:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:17:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:17:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:17:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:17:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:17:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:17:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:17:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:17:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:17:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:17:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:17:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:17:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:17:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:17:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:17:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:17:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:17:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:17:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:17:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6142 backedges. 74 proven. 3404 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-09-04 23:17:33,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541972326] [2020-09-04 23:17:33,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:33,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-09-04 23:17:33,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612105413] [2020-09-04 23:17:33,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-09-04 23:17:33,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:33,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-09-04 23:17:33,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2020-09-04 23:17:33,690 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 79 states. [2020-09-04 23:17:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:39,635 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2020-09-04 23:17:39,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-09-04 23:17:39,636 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 344 [2020-09-04 23:17:39,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:39,639 INFO L225 Difference]: With dead ends: 360 [2020-09-04 23:17:39,639 INFO L226 Difference]: Without dead ends: 358 [2020-09-04 23:17:39,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4253 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=7226, Invalid=16336, Unknown=0, NotChecked=0, Total=23562 [2020-09-04 23:17:39,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-04 23:17:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-09-04 23:17:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-09-04 23:17:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2020-09-04 23:17:39,670 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 344 [2020-09-04 23:17:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:39,671 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2020-09-04 23:17:39,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-09-04 23:17:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2020-09-04 23:17:39,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-09-04 23:17:39,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:39,673 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:39,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-04 23:17:39,674 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:39,674 INFO L82 PathProgramCache]: Analyzing trace with hash -165230, now seen corresponding path program 38 times [2020-09-04 23:17:39,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:39,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8688440] [2020-09-04 23:17:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:17:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:17:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:17:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:17:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:17:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:17:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:17:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:17:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:17:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:17:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:17:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:17:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:17:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:17:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:17:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:17:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:17:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:17:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:17:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:17:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:17:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:17:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:17:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:17:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:17:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:17:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:17:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:17:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:17:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:17:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:17:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:17:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:17:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:17:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:17:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:17:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:17:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:17:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6479 backedges. 76 proven. 3591 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-09-04 23:17:43,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8688440] [2020-09-04 23:17:43,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:43,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-09-04 23:17:43,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506111505] [2020-09-04 23:17:43,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-09-04 23:17:43,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:43,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-09-04 23:17:43,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=4877, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 23:17:43,649 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 81 states. [2020-09-04 23:17:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:17:50,159 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2020-09-04 23:17:50,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-09-04 23:17:50,160 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 353 [2020-09-04 23:17:50,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:17:50,162 INFO L225 Difference]: With dead ends: 369 [2020-09-04 23:17:50,162 INFO L226 Difference]: Without dead ends: 367 [2020-09-04 23:17:50,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4482 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=7611, Invalid=17195, Unknown=0, NotChecked=0, Total=24806 [2020-09-04 23:17:50,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-09-04 23:17:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-09-04 23:17:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-09-04 23:17:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2020-09-04 23:17:50,175 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 353 [2020-09-04 23:17:50,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:17:50,175 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2020-09-04 23:17:50,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-09-04 23:17:50,175 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2020-09-04 23:17:50,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-09-04 23:17:50,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:17:50,178 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:17:50,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-09-04 23:17:50,179 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:17:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:17:50,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1054027090, now seen corresponding path program 39 times [2020-09-04 23:17:50,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:17:50,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434610046] [2020-09-04 23:17:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:17:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:17:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:17:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:17:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:17:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:17:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:17:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:17:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:17:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:17:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:17:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:17:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:17:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:17:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:17:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:17:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:17:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:17:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:17:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:17:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:17:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:17:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:17:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:17:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:17:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:17:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:17:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:17:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:17:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:17:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:17:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:17:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:17:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:17:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:17:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:17:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:17:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:17:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:17:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:17:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:17:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:17:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6825 backedges. 78 proven. 3783 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-09-04 23:17:54,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434610046] [2020-09-04 23:17:54,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:17:54,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-09-04 23:17:54,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658839173] [2020-09-04 23:17:54,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-09-04 23:17:54,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:17:54,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-09-04 23:17:54,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5122, Unknown=0, NotChecked=0, Total=6806 [2020-09-04 23:17:54,426 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 83 states. [2020-09-04 23:18:01,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:01,989 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2020-09-04 23:18:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-09-04 23:18:01,989 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 362 [2020-09-04 23:18:01,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:01,992 INFO L225 Difference]: With dead ends: 378 [2020-09-04 23:18:01,992 INFO L226 Difference]: Without dead ends: 376 [2020-09-04 23:18:01,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=8006, Invalid=18076, Unknown=0, NotChecked=0, Total=26082 [2020-09-04 23:18:01,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-09-04 23:18:02,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2020-09-04 23:18:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-09-04 23:18:02,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2020-09-04 23:18:02,005 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 362 [2020-09-04 23:18:02,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:02,006 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2020-09-04 23:18:02,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-09-04 23:18:02,006 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2020-09-04 23:18:02,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-09-04 23:18:02,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:02,009 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:02,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-09-04 23:18:02,009 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:02,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:02,010 INFO L82 PathProgramCache]: Analyzing trace with hash -607593966, now seen corresponding path program 40 times [2020-09-04 23:18:02,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:02,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542234351] [2020-09-04 23:18:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:18:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:18:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:18:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:18:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:18:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:18:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:18:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:18:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:18:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:18:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:18:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:18:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:18:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:18:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:18:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:18:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:18:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:18:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:18:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:18:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:18:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:18:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:18:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:18:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:18:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:18:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:18:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:18:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:18:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:18:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:18:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:18:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:18:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:18:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:18:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:18:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:18:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:18:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:18:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:18:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7180 backedges. 80 proven. 3980 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2020-09-04 23:18:06,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542234351] [2020-09-04 23:18:06,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:06,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-09-04 23:18:06,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559032612] [2020-09-04 23:18:06,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-09-04 23:18:06,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:06,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-09-04 23:18:06,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=5373, Unknown=0, NotChecked=0, Total=7140 [2020-09-04 23:18:06,695 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 85 states. [2020-09-04 23:18:14,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:14,645 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2020-09-04 23:18:14,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-09-04 23:18:14,646 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 371 [2020-09-04 23:18:14,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:14,648 INFO L225 Difference]: With dead ends: 387 [2020-09-04 23:18:14,649 INFO L226 Difference]: Without dead ends: 385 [2020-09-04 23:18:14,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4958 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=8411, Invalid=18979, Unknown=0, NotChecked=0, Total=27390 [2020-09-04 23:18:14,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-09-04 23:18:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2020-09-04 23:18:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-09-04 23:18:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2020-09-04 23:18:14,661 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 371 [2020-09-04 23:18:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:14,661 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2020-09-04 23:18:14,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-09-04 23:18:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2020-09-04 23:18:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-04 23:18:14,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:14,664 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:14,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-04 23:18:14,665 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:14,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:14,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1601495854, now seen corresponding path program 41 times [2020-09-04 23:18:14,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:14,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488496881] [2020-09-04 23:18:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:18:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:18:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:18:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:18:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:18:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:18:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:18:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:18:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:18:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:18:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:18:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:18:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:18:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:18:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:18:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:18:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:18:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:18:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:18:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:18:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:18:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:18:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:18:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:18:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:18:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:18:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:18:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:18:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:18:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:18:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:18:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:18:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:18:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:18:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:18:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:18:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:18:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:18:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:18:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:18:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:18:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7544 backedges. 82 proven. 4182 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-09-04 23:18:19,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488496881] [2020-09-04 23:18:19,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:19,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-09-04 23:18:19,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319631977] [2020-09-04 23:18:19,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-09-04 23:18:19,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:19,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-09-04 23:18:19,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=5630, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 23:18:19,705 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 87 states. [2020-09-04 23:18:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:27,680 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2020-09-04 23:18:27,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-09-04 23:18:27,681 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 380 [2020-09-04 23:18:27,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:27,684 INFO L225 Difference]: With dead ends: 396 [2020-09-04 23:18:27,684 INFO L226 Difference]: Without dead ends: 394 [2020-09-04 23:18:27,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5205 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=8826, Invalid=19904, Unknown=0, NotChecked=0, Total=28730 [2020-09-04 23:18:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-04 23:18:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-09-04 23:18:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-09-04 23:18:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2020-09-04 23:18:27,697 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 380 [2020-09-04 23:18:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:27,697 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2020-09-04 23:18:27,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-09-04 23:18:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2020-09-04 23:18:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-09-04 23:18:27,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:27,701 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:27,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-04 23:18:27,701 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:27,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:27,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1974773358, now seen corresponding path program 42 times [2020-09-04 23:18:27,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:27,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041065821] [2020-09-04 23:18:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:18:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:18:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:18:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:18:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:18:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:18:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:18:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:18:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:18:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:18:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:18:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:18:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:18:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:18:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:18:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:18:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:18:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:18:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:18:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:18:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:18:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:18:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:18:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:18:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:18:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:18:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:18:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:18:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:18:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:18:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:18:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:18:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:18:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:18:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:18:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:18:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:18:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:18:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:18:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:18:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:18:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:32,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:18:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7917 backedges. 84 proven. 4389 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2020-09-04 23:18:33,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041065821] [2020-09-04 23:18:33,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:33,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-09-04 23:18:33,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468506135] [2020-09-04 23:18:33,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-09-04 23:18:33,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:33,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-09-04 23:18:33,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1939, Invalid=5893, Unknown=0, NotChecked=0, Total=7832 [2020-09-04 23:18:33,014 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 89 states. [2020-09-04 23:18:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:42,197 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2020-09-04 23:18:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-09-04 23:18:42,198 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 389 [2020-09-04 23:18:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:42,201 INFO L225 Difference]: With dead ends: 405 [2020-09-04 23:18:42,201 INFO L226 Difference]: Without dead ends: 403 [2020-09-04 23:18:42,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5458 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=9251, Invalid=20851, Unknown=0, NotChecked=0, Total=30102 [2020-09-04 23:18:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-09-04 23:18:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2020-09-04 23:18:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-09-04 23:18:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2020-09-04 23:18:42,215 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 389 [2020-09-04 23:18:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:42,215 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2020-09-04 23:18:42,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-09-04 23:18:42,216 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2020-09-04 23:18:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-09-04 23:18:42,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:42,219 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:42,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-09-04 23:18:42,219 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:42,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:42,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1997132718, now seen corresponding path program 43 times [2020-09-04 23:18:42,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:42,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740816327] [2020-09-04 23:18:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:18:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:18:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:18:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:18:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:18:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:18:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:18:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:18:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:18:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:18:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:18:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:18:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:18:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:18:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:18:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:18:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:18:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:18:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:18:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:18:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:18:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:18:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:18:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:18:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:18:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:18:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:18:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:18:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:18:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:18:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:18:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:18:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:18:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:18:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:18:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:18:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:18:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:18:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:18:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:18:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:18:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:18:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:18:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:18:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:18:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8299 backedges. 86 proven. 4601 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-09-04 23:18:47,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740816327] [2020-09-04 23:18:47,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:18:47,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2020-09-04 23:18:47,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049199552] [2020-09-04 23:18:47,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-09-04 23:18:47,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:18:47,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-09-04 23:18:47,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=6162, Unknown=0, NotChecked=0, Total=8190 [2020-09-04 23:18:47,990 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 91 states. [2020-09-04 23:18:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:18:57,959 INFO L93 Difference]: Finished difference Result 414 states and 414 transitions. [2020-09-04 23:18:57,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-09-04 23:18:57,961 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 398 [2020-09-04 23:18:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:18:57,963 INFO L225 Difference]: With dead ends: 414 [2020-09-04 23:18:57,963 INFO L226 Difference]: Without dead ends: 412 [2020-09-04 23:18:57,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5717 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=9686, Invalid=21820, Unknown=0, NotChecked=0, Total=31506 [2020-09-04 23:18:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-09-04 23:18:57,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2020-09-04 23:18:57,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-09-04 23:18:57,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2020-09-04 23:18:57,974 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 398 [2020-09-04 23:18:57,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:18:57,975 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2020-09-04 23:18:57,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-09-04 23:18:57,975 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2020-09-04 23:18:57,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-09-04 23:18:57,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:18:57,977 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:18:57,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-09-04 23:18:57,977 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:18:57,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:18:57,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1208157934, now seen corresponding path program 44 times [2020-09-04 23:18:57,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:18:57,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42789058] [2020-09-04 23:18:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:18:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:19:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:19:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:19:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:19:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:19:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:19:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:19:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:19:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:19:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:19:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:19:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:19:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:19:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:19:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:19:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:19:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:19:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:19:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:19:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:19:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:19:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:19:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:19:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:19:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:19:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:19:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:19:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:19:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:19:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:19:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:19:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:19:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:19:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:19:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:19:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:19:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:19:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:19:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:19:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:19:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:19:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:19:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:19:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:19:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:19:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8690 backedges. 88 proven. 4818 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2020-09-04 23:19:04,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42789058] [2020-09-04 23:19:04,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:19:04,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2020-09-04 23:19:04,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584213778] [2020-09-04 23:19:04,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-09-04 23:19:04,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:19:04,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-09-04 23:19:04,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2119, Invalid=6437, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 23:19:04,227 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 93 states. [2020-09-04 23:19:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:19:14,442 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2020-09-04 23:19:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-09-04 23:19:14,444 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 407 [2020-09-04 23:19:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:19:14,447 INFO L225 Difference]: With dead ends: 423 [2020-09-04 23:19:14,447 INFO L226 Difference]: Without dead ends: 421 [2020-09-04 23:19:14,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5982 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=10131, Invalid=22811, Unknown=0, NotChecked=0, Total=32942 [2020-09-04 23:19:14,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-09-04 23:19:14,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2020-09-04 23:19:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-09-04 23:19:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2020-09-04 23:19:14,459 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 407 [2020-09-04 23:19:14,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:19:14,460 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2020-09-04 23:19:14,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-09-04 23:19:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2020-09-04 23:19:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-04 23:19:14,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:19:14,463 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:19:14,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-09-04 23:19:14,464 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:19:14,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:19:14,464 INFO L82 PathProgramCache]: Analyzing trace with hash -495737810, now seen corresponding path program 45 times [2020-09-04 23:19:14,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:19:14,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504377046] [2020-09-04 23:19:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:19:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:19:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:19:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:19:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:19:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:19:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:19:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:19:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:19:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:19:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:19:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:19:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:19:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:19:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:19:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:19:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:19:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:19:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:19:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:19:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:19:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:19:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:19:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:19:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:19:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:19:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:19:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:19:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:19:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:19:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:19:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:19:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:19:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:19:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:19:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:19:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:19:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:19:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:19:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:19:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:19:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:19:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:19:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:19:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:19:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:19:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:19:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 90 proven. 5040 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-09-04 23:19:21,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504377046] [2020-09-04 23:19:21,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:19:21,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2020-09-04 23:19:21,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360802637] [2020-09-04 23:19:21,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-09-04 23:19:21,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:19:21,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-09-04 23:19:21,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2212, Invalid=6718, Unknown=0, NotChecked=0, Total=8930 [2020-09-04 23:19:21,213 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 95 states. [2020-09-04 23:19:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:19:33,056 INFO L93 Difference]: Finished difference Result 432 states and 432 transitions. [2020-09-04 23:19:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-09-04 23:19:33,058 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 416 [2020-09-04 23:19:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:19:33,062 INFO L225 Difference]: With dead ends: 432 [2020-09-04 23:19:33,062 INFO L226 Difference]: Without dead ends: 430 [2020-09-04 23:19:33,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6253 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=10586, Invalid=23824, Unknown=0, NotChecked=0, Total=34410 [2020-09-04 23:19:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-09-04 23:19:33,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2020-09-04 23:19:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-04 23:19:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2020-09-04 23:19:33,079 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 416 [2020-09-04 23:19:33,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:19:33,079 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2020-09-04 23:19:33,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-09-04 23:19:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2020-09-04 23:19:33,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-09-04 23:19:33,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:19:33,083 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:19:33,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-09-04 23:19:33,084 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:19:33,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:19:33,084 INFO L82 PathProgramCache]: Analyzing trace with hash -480921454, now seen corresponding path program 46 times [2020-09-04 23:19:33,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:19:33,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189387103] [2020-09-04 23:19:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:19:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:19:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:19:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:19:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:19:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:19:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:19:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:19:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:19:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:19:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:19:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:19:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:19:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:19:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:19:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:19:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:19:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:19:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:19:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:19:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:19:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:19:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:19:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:19:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:19:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:19:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:19:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:19:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:19:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:19:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:19:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:19:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:19:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:19:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:19:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:19:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:19:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:19:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:19:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:19:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:19:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:19:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:19:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:19:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:19:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:19:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:19:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:19:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:19:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9499 backedges. 92 proven. 5267 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2020-09-04 23:19:40,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189387103] [2020-09-04 23:19:40,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:19:40,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2020-09-04 23:19:40,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362984753] [2020-09-04 23:19:40,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-09-04 23:19:40,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:19:40,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-09-04 23:19:40,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=7005, Unknown=0, NotChecked=0, Total=9312 [2020-09-04 23:19:40,595 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 97 states. [2020-09-04 23:19:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:19:53,742 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2020-09-04 23:19:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-09-04 23:19:53,744 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 425 [2020-09-04 23:19:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:19:53,747 INFO L225 Difference]: With dead ends: 441 [2020-09-04 23:19:53,747 INFO L226 Difference]: Without dead ends: 439 [2020-09-04 23:19:53,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=11051, Invalid=24859, Unknown=0, NotChecked=0, Total=35910 [2020-09-04 23:19:53,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-04 23:19:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2020-09-04 23:19:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-09-04 23:19:53,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-09-04 23:19:53,759 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 425 [2020-09-04 23:19:53,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:19:53,759 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-09-04 23:19:53,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-09-04 23:19:53,759 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-09-04 23:19:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-09-04 23:19:53,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:19:53,765 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:19:53,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-04 23:19:53,765 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:19:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:19:53,766 INFO L82 PathProgramCache]: Analyzing trace with hash -365275986, now seen corresponding path program 47 times [2020-09-04 23:19:53,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:19:53,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101163845] [2020-09-04 23:19:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:19:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:20:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:20:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:20:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:20:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:20:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:20:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:20:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:20:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:20:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:20:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:20:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:20:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:20:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:20:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:20:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:20:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:20:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:20:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:20:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:20:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:20:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:20:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:20:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:20:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:20:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:20:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:20:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:20:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:20:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:20:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:20:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:20:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:20:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:20:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:20:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:20:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:20:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:20:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:20:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:20:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:20:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:20:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:20:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:20:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:20:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:20:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:20:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:01,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:20:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9917 backedges. 94 proven. 5499 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-09-04 23:20:02,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101163845] [2020-09-04 23:20:02,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:20:02,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2020-09-04 23:20:02,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228647770] [2020-09-04 23:20:02,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-09-04 23:20:02,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:20:02,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-09-04 23:20:02,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2404, Invalid=7298, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 23:20:02,111 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 99 states. [2020-09-04 23:20:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:20:18,195 INFO L93 Difference]: Finished difference Result 450 states and 450 transitions. [2020-09-04 23:20:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-09-04 23:20:18,198 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 434 [2020-09-04 23:20:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:20:18,202 INFO L225 Difference]: With dead ends: 450 [2020-09-04 23:20:18,202 INFO L226 Difference]: Without dead ends: 448 [2020-09-04 23:20:18,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6813 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=11526, Invalid=25916, Unknown=0, NotChecked=0, Total=37442 [2020-09-04 23:20:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-09-04 23:20:18,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2020-09-04 23:20:18,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-09-04 23:20:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2020-09-04 23:20:18,226 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 434 [2020-09-04 23:20:18,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:20:18,227 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2020-09-04 23:20:18,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-09-04 23:20:18,227 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2020-09-04 23:20:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-09-04 23:20:18,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:20:18,234 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:20:18,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-04 23:20:18,234 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:20:18,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:20:18,235 INFO L82 PathProgramCache]: Analyzing trace with hash -590505966, now seen corresponding path program 48 times [2020-09-04 23:20:18,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:20:18,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287386114] [2020-09-04 23:20:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:20:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:20:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:20:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:20:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:20:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:20:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:20:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:20:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:20:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:20:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:20:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:20:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:20:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:20:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:20:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:20:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:20:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:20:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:20:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:20:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:20:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:20:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:20:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:20:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:20:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:20:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:20:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:20:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:20:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:20:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:20:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:20:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:20:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:20:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:20:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:20:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:20:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:20:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:20:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:20:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:20:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:20:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:20:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:20:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:20:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:20:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:20:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:20:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:20:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:28,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:20:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10344 backedges. 96 proven. 5736 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2020-09-04 23:20:29,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287386114] [2020-09-04 23:20:29,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:20:29,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2020-09-04 23:20:29,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366825900] [2020-09-04 23:20:29,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-09-04 23:20:29,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:20:29,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-09-04 23:20:29,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2503, Invalid=7597, Unknown=0, NotChecked=0, Total=10100 [2020-09-04 23:20:29,017 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 101 states. [2020-09-04 23:20:45,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:20:45,988 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2020-09-04 23:20:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-09-04 23:20:45,991 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 443 [2020-09-04 23:20:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:20:45,993 INFO L225 Difference]: With dead ends: 459 [2020-09-04 23:20:45,993 INFO L226 Difference]: Without dead ends: 457 [2020-09-04 23:20:45,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7102 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=12011, Invalid=26995, Unknown=0, NotChecked=0, Total=39006 [2020-09-04 23:20:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-09-04 23:20:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2020-09-04 23:20:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-09-04 23:20:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2020-09-04 23:20:46,006 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 443 [2020-09-04 23:20:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:20:46,007 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2020-09-04 23:20:46,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-09-04 23:20:46,007 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2020-09-04 23:20:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-09-04 23:20:46,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:20:46,030 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:20:46,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-04 23:20:46,030 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:20:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:20:46,031 INFO L82 PathProgramCache]: Analyzing trace with hash -991566546, now seen corresponding path program 49 times [2020-09-04 23:20:46,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:20:46,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388653942] [2020-09-04 23:20:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:20:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:20:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:20:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:20:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:20:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:20:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:20:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:20:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:20:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:20:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:20:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:20:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:20:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:20:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:20:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:20:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:20:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:20:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:20:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:20:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:20:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:20:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:20:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:20:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:20:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:20:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:20:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:20:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:20:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:20:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:20:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:20:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:20:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:20:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:20:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:20:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:20:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:20:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:20:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:20:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:20:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:20:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:20:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:20:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:20:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:20:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:20:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:20:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:20:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:20:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 23:20:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:20:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10780 backedges. 98 proven. 5978 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-09-04 23:20:56,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388653942] [2020-09-04 23:20:56,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:20:56,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2020-09-04 23:20:56,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385490401] [2020-09-04 23:20:56,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-09-04 23:20:56,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:20:56,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-09-04 23:20:56,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2604, Invalid=7902, Unknown=0, NotChecked=0, Total=10506 [2020-09-04 23:20:56,350 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 103 states. [2020-09-04 23:21:15,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:21:15,368 INFO L93 Difference]: Finished difference Result 468 states and 468 transitions. [2020-09-04 23:21:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-09-04 23:21:15,370 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 452 [2020-09-04 23:21:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:21:15,372 INFO L225 Difference]: With dead ends: 468 [2020-09-04 23:21:15,372 INFO L226 Difference]: Without dead ends: 466 [2020-09-04 23:21:15,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7397 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=12506, Invalid=28096, Unknown=0, NotChecked=0, Total=40602 [2020-09-04 23:21:15,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-09-04 23:21:15,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 464. [2020-09-04 23:21:15,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-09-04 23:21:15,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 464 transitions. [2020-09-04 23:21:15,390 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 464 transitions. Word has length 452 [2020-09-04 23:21:15,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:21:15,390 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 464 transitions. [2020-09-04 23:21:15,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-09-04 23:21:15,390 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 464 transitions. [2020-09-04 23:21:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-09-04 23:21:15,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:21:15,394 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:21:15,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-09-04 23:21:15,395 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:21:15,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:21:15,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1188861842, now seen corresponding path program 50 times [2020-09-04 23:21:15,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:21:15,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130216058] [2020-09-04 23:21:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:21:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:21:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:21:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:21:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:21:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:21:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:21:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:21:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:21:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:21:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:21:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:21:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:21:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:21:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:21:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:21:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:21:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:21:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:21:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:21:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:21:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:21:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:21:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:21:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:21:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:21:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:21:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:21:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:21:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:21:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:21:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:21:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:21:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:21:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:21:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:21:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:21:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:21:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:21:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:21:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:21:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:21:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:21:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:21:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:21:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:21:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:21:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:21:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:21:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:21:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 23:21:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 23:21:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:21:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11225 backedges. 100 proven. 6225 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2020-09-04 23:21:27,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130216058] [2020-09-04 23:21:27,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:21:27,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2020-09-04 23:21:27,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590261537] [2020-09-04 23:21:27,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-09-04 23:21:27,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:21:27,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-09-04 23:21:27,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=8213, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 23:21:27,096 INFO L87 Difference]: Start difference. First operand 464 states and 464 transitions. Second operand 105 states. [2020-09-04 23:21:49,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:21:49,769 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2020-09-04 23:21:49,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-09-04 23:21:49,772 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 461 [2020-09-04 23:21:49,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:21:49,775 INFO L225 Difference]: With dead ends: 477 [2020-09-04 23:21:49,775 INFO L226 Difference]: Without dead ends: 475 [2020-09-04 23:21:49,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7698 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=13011, Invalid=29219, Unknown=0, NotChecked=0, Total=42230 [2020-09-04 23:21:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-09-04 23:21:49,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2020-09-04 23:21:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-09-04 23:21:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 473 transitions. [2020-09-04 23:21:49,790 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 473 transitions. Word has length 461 [2020-09-04 23:21:49,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:21:49,790 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 473 transitions. [2020-09-04 23:21:49,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-09-04 23:21:49,791 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 473 transitions. [2020-09-04 23:21:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-09-04 23:21:49,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:21:49,795 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:21:49,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-09-04 23:21:49,795 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:21:49,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:21:49,795 INFO L82 PathProgramCache]: Analyzing trace with hash 385766830, now seen corresponding path program 51 times [2020-09-04 23:21:49,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:21:49,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897051713] [2020-09-04 23:21:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:21:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:22:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:22:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:22:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:22:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:22:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:22:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:22:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:22:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:22:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:22:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:22:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:22:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:22:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:22:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:22:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:22:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:22:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:22:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:22:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:22:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:22:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:22:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:22:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:22:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:22:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:22:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:22:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:22:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:22:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:22:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:22:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:22:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:22:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:22:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:22:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:22:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:22:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:22:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:22:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:22:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:22:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:22:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:22:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:22:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:22:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:22:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:22:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:22:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:22:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 23:22:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 23:22:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 23:22:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11679 backedges. 102 proven. 6477 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-09-04 23:22:03,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897051713] [2020-09-04 23:22:03,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:22:03,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2020-09-04 23:22:03,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72671694] [2020-09-04 23:22:03,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-09-04 23:22:03,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:22:03,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-09-04 23:22:03,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2812, Invalid=8530, Unknown=0, NotChecked=0, Total=11342 [2020-09-04 23:22:03,260 INFO L87 Difference]: Start difference. First operand 473 states and 473 transitions. Second operand 107 states. [2020-09-04 23:22:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:22:26,100 INFO L93 Difference]: Finished difference Result 486 states and 486 transitions. [2020-09-04 23:22:26,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-09-04 23:22:26,103 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 470 [2020-09-04 23:22:26,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:22:26,106 INFO L225 Difference]: With dead ends: 486 [2020-09-04 23:22:26,106 INFO L226 Difference]: Without dead ends: 484 [2020-09-04 23:22:26,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8005 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=13526, Invalid=30364, Unknown=0, NotChecked=0, Total=43890 [2020-09-04 23:22:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-09-04 23:22:26,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 482. [2020-09-04 23:22:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-09-04 23:22:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 482 transitions. [2020-09-04 23:22:26,119 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 482 transitions. Word has length 470 [2020-09-04 23:22:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:22:26,120 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 482 transitions. [2020-09-04 23:22:26,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-09-04 23:22:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 482 transitions. [2020-09-04 23:22:26,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-09-04 23:22:26,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:22:26,124 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:22:26,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-09-04 23:22:26,124 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:22:26,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:22:26,125 INFO L82 PathProgramCache]: Analyzing trace with hash 368752402, now seen corresponding path program 52 times [2020-09-04 23:22:26,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:22:26,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982151395] [2020-09-04 23:22:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:22:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:22:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:22:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:22:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:22:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:22:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:22:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:22:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:22:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:22:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:22:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:22:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:22:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:22:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:22:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:22:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:22:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:22:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:22:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:22:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:22:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:22:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:22:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:22:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:22:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:22:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:22:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:22:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:22:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:22:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:22:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:22:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:22:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:22:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:22:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:22:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:22:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:22:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:22:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:22:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:22:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:22:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:22:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:22:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:22:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:22:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:22:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:22:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:22:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:22:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 23:22:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 23:22:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 23:22:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 23:22:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12142 backedges. 104 proven. 6734 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2020-09-04 23:22:40,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982151395] [2020-09-04 23:22:40,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:22:40,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2020-09-04 23:22:40,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046289048] [2020-09-04 23:22:40,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-09-04 23:22:40,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:22:40,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-09-04 23:22:40,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2919, Invalid=8853, Unknown=0, NotChecked=0, Total=11772 [2020-09-04 23:22:40,954 INFO L87 Difference]: Start difference. First operand 482 states and 482 transitions. Second operand 109 states. [2020-09-04 23:23:08,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:23:08,725 INFO L93 Difference]: Finished difference Result 495 states and 495 transitions. [2020-09-04 23:23:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-09-04 23:23:08,728 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 479 [2020-09-04 23:23:08,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:23:08,731 INFO L225 Difference]: With dead ends: 495 [2020-09-04 23:23:08,732 INFO L226 Difference]: Without dead ends: 493 [2020-09-04 23:23:08,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8318 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=14051, Invalid=31531, Unknown=0, NotChecked=0, Total=45582 [2020-09-04 23:23:08,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-09-04 23:23:08,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2020-09-04 23:23:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-04 23:23:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2020-09-04 23:23:08,746 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 479 [2020-09-04 23:23:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:23:08,747 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2020-09-04 23:23:08,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-09-04 23:23:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2020-09-04 23:23:08,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-09-04 23:23:08,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:23:08,751 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:23:08,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-04 23:23:08,752 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:23:08,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:23:08,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1930143278, now seen corresponding path program 53 times [2020-09-04 23:23:08,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:23:08,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041158044] [2020-09-04 23:23:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:23:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:23:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:23:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:23:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:23:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:23:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:23:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:23:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:23:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:23:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:23:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:23:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:23:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:23:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:23:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:23:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:23:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:23:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:23:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:23:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:23:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:23:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:23:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:23:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:23:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:23:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:23:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:23:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:23:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:23:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:23:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:23:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:23:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:23:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:23:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:23:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:23:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:23:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:23:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:23:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:23:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:23:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:23:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:23:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:23:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:23:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:23:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:23:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:23:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:23:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 23:23:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 23:23:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 23:23:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 23:23:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 23:23:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:23:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12614 backedges. 106 proven. 6996 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-09-04 23:23:23,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041158044] [2020-09-04 23:23:23,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:23:23,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2020-09-04 23:23:23,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206451337] [2020-09-04 23:23:23,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-09-04 23:23:23,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:23:23,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-09-04 23:23:23,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3028, Invalid=9182, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 23:23:23,576 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 111 states. [2020-09-04 23:23:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:23:49,415 INFO L93 Difference]: Finished difference Result 504 states and 504 transitions. [2020-09-04 23:23:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-09-04 23:23:49,418 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 488 [2020-09-04 23:23:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:23:49,422 INFO L225 Difference]: With dead ends: 504 [2020-09-04 23:23:49,422 INFO L226 Difference]: Without dead ends: 502 [2020-09-04 23:23:49,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8637 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=14586, Invalid=32720, Unknown=0, NotChecked=0, Total=47306 [2020-09-04 23:23:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-09-04 23:23:49,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2020-09-04 23:23:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-09-04 23:23:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 500 transitions. [2020-09-04 23:23:49,435 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 500 transitions. Word has length 488 [2020-09-04 23:23:49,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:23:49,435 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 500 transitions. [2020-09-04 23:23:49,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-09-04 23:23:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 500 transitions. [2020-09-04 23:23:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-09-04 23:23:49,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:23:49,438 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:23:49,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-04 23:23:49,438 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:23:49,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:23:49,438 INFO L82 PathProgramCache]: Analyzing trace with hash 278918802, now seen corresponding path program 54 times [2020-09-04 23:23:49,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:23:49,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339129361] [2020-09-04 23:23:49,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:23:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:24:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:24:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:24:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:24:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:24:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:24:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:24:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:24:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:24:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:24:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:24:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:24:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:24:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:24:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:24:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:24:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:24:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:24:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:24:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:24:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:24:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:24:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:24:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:24:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:24:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:24:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:24:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:24:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:24:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:24:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:24:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:24:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:24:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:24:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:24:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:24:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:24:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:24:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:24:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:24:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:24:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:24:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:24:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:24:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:24:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:24:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:24:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:24:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:24:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 23:24:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 23:24:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 23:24:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 23:24:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 23:24:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 23:24:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13095 backedges. 108 proven. 7263 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2020-09-04 23:24:05,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339129361] [2020-09-04 23:24:05,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:24:05,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2020-09-04 23:24:05,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169661505] [2020-09-04 23:24:05,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-09-04 23:24:05,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:24:05,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-09-04 23:24:05,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=9517, Unknown=0, NotChecked=0, Total=12656 [2020-09-04 23:24:05,764 INFO L87 Difference]: Start difference. First operand 500 states and 500 transitions. Second operand 113 states. [2020-09-04 23:24:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:24:33,789 INFO L93 Difference]: Finished difference Result 513 states and 513 transitions. [2020-09-04 23:24:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2020-09-04 23:24:33,792 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 497 [2020-09-04 23:24:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:24:33,795 INFO L225 Difference]: With dead ends: 513 [2020-09-04 23:24:33,796 INFO L226 Difference]: Without dead ends: 511 [2020-09-04 23:24:33,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8962 ImplicationChecksByTransitivity, 38.0s TimeCoverageRelationStatistics Valid=15131, Invalid=33931, Unknown=0, NotChecked=0, Total=49062 [2020-09-04 23:24:33,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-09-04 23:24:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2020-09-04 23:24:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-09-04 23:24:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 509 transitions. [2020-09-04 23:24:33,807 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 509 transitions. Word has length 497 [2020-09-04 23:24:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:24:33,807 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 509 transitions. [2020-09-04 23:24:33,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 113 states. [2020-09-04 23:24:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 509 transitions. [2020-09-04 23:24:33,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-09-04 23:24:33,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:24:33,812 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:24:33,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-04 23:24:33,812 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:24:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:24:33,813 INFO L82 PathProgramCache]: Analyzing trace with hash -644491602, now seen corresponding path program 55 times [2020-09-04 23:24:33,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:24:33,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321627007] [2020-09-04 23:24:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:24:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:24:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:24:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:24:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:24:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:24:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:24:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:24:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:24:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:24:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:24:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:24:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:24:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:24:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:24:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:24:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:24:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:24:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:24:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:24:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:24:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:24:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:24:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:24:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:24:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:24:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:24:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:24:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:24:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:24:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:24:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:24:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:24:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:24:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:24:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:24:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:24:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:24:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:24:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:24:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:24:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:24:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:24:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:24:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:24:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:24:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:24:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:24:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:24:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:24:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 23:24:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 23:24:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 23:24:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 23:24:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 23:24:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 23:24:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-09-04 23:24:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:24:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13585 backedges. 110 proven. 7535 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2020-09-04 23:24:50,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321627007] [2020-09-04 23:24:50,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:24:50,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2020-09-04 23:24:50,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264176953] [2020-09-04 23:24:50,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2020-09-04 23:24:50,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:24:50,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2020-09-04 23:24:50,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=9858, Unknown=0, NotChecked=0, Total=13110 [2020-09-04 23:24:50,836 INFO L87 Difference]: Start difference. First operand 509 states and 509 transitions. Second operand 115 states. [2020-09-04 23:25:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:25:22,581 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2020-09-04 23:25:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2020-09-04 23:25:22,584 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 506 [2020-09-04 23:25:22,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:25:22,588 INFO L225 Difference]: With dead ends: 522 [2020-09-04 23:25:22,588 INFO L226 Difference]: Without dead ends: 520 [2020-09-04 23:25:22,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9293 ImplicationChecksByTransitivity, 41.2s TimeCoverageRelationStatistics Valid=15686, Invalid=35164, Unknown=0, NotChecked=0, Total=50850 [2020-09-04 23:25:22,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-09-04 23:25:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518. [2020-09-04 23:25:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-09-04 23:25:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 518 transitions. [2020-09-04 23:25:22,601 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 518 transitions. Word has length 506 [2020-09-04 23:25:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:25:22,601 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 518 transitions. [2020-09-04 23:25:22,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 115 states. [2020-09-04 23:25:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 518 transitions. [2020-09-04 23:25:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-09-04 23:25:22,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:25:22,604 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:25:22,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-09-04 23:25:22,604 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:25:22,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:25:22,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1329878546, now seen corresponding path program 56 times [2020-09-04 23:25:22,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:25:22,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866108505] [2020-09-04 23:25:22,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:25:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:25:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:25:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:25:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:25:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:25:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:25:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:25:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:25:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:25:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:25:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:25:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:25:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:25:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:25:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:25:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:25:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:25:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:25:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:25:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:25:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:25:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:25:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:25:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:25:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:25:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:25:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:25:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:25:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:25:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:25:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:25:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:25:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:25:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:25:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:25:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:25:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:25:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:25:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:25:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:25:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:25:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:25:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:25:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:25:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:25:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:25:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:25:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:25:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:25:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 23:25:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 23:25:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 23:25:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 23:25:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 23:25:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 23:25:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-09-04 23:25:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:41,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 23:25:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:25:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 14084 backedges. 112 proven. 7812 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2020-09-04 23:25:42,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866108505] [2020-09-04 23:25:42,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:25:42,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2020-09-04 23:25:42,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491239320] [2020-09-04 23:25:42,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2020-09-04 23:25:42,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:25:42,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2020-09-04 23:25:42,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=10205, Unknown=0, NotChecked=0, Total=13572 [2020-09-04 23:25:42,107 INFO L87 Difference]: Start difference. First operand 518 states and 518 transitions. Second operand 117 states. [2020-09-04 23:26:13,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:26:13,841 INFO L93 Difference]: Finished difference Result 531 states and 531 transitions. [2020-09-04 23:26:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2020-09-04 23:26:13,845 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 515 [2020-09-04 23:26:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:26:13,848 INFO L225 Difference]: With dead ends: 531 [2020-09-04 23:26:13,848 INFO L226 Difference]: Without dead ends: 529 [2020-09-04 23:26:13,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9630 ImplicationChecksByTransitivity, 45.8s TimeCoverageRelationStatistics Valid=16251, Invalid=36419, Unknown=0, NotChecked=0, Total=52670 [2020-09-04 23:26:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-09-04 23:26:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2020-09-04 23:26:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-09-04 23:26:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 527 transitions. [2020-09-04 23:26:13,862 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 527 transitions. Word has length 515 [2020-09-04 23:26:13,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:26:13,863 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 527 transitions. [2020-09-04 23:26:13,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 117 states. [2020-09-04 23:26:13,863 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 527 transitions. [2020-09-04 23:26:13,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-09-04 23:26:13,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:26:13,867 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:26:13,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-09-04 23:26:13,868 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:26:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:26:13,868 INFO L82 PathProgramCache]: Analyzing trace with hash 958719790, now seen corresponding path program 57 times [2020-09-04 23:26:13,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:26:13,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732405447] [2020-09-04 23:26:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:26:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:26:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:26:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:26:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:26:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:26:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:26:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:26:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:26:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:26:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:26:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:26:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:26:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:26:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:26:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:26:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:26:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:26:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:26:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:26:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:26:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:26:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:26:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:26:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:26:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:26:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:26:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:26:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:26:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:26:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:26:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:26:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:26:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:26:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:26:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:26:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:26:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:26:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:26:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:26:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:26:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:26:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:26:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:26:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:26:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:26:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:26:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:26:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:26:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:26:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 23:26:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 23:26:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 23:26:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 23:26:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 23:26:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 23:26:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-09-04 23:26:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 23:26:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:34,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-09-04 23:26:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:26:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14592 backedges. 114 proven. 8094 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2020-09-04 23:26:35,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732405447] [2020-09-04 23:26:35,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:26:35,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2020-09-04 23:26:35,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145058918] [2020-09-04 23:26:35,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2020-09-04 23:26:35,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:26:35,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2020-09-04 23:26:35,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3484, Invalid=10558, Unknown=0, NotChecked=0, Total=14042 [2020-09-04 23:26:35,062 INFO L87 Difference]: Start difference. First operand 527 states and 527 transitions. Second operand 119 states. [2020-09-04 23:27:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:27:11,304 INFO L93 Difference]: Finished difference Result 540 states and 540 transitions. [2020-09-04 23:27:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2020-09-04 23:27:11,308 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 524 [2020-09-04 23:27:11,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:27:11,311 INFO L225 Difference]: With dead ends: 540 [2020-09-04 23:27:11,311 INFO L226 Difference]: Without dead ends: 538 [2020-09-04 23:27:11,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9973 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=16826, Invalid=37696, Unknown=0, NotChecked=0, Total=54522 [2020-09-04 23:27:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-09-04 23:27:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2020-09-04 23:27:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-04 23:27:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 536 transitions. [2020-09-04 23:27:11,323 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 536 transitions. Word has length 524 [2020-09-04 23:27:11,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:27:11,324 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 536 transitions. [2020-09-04 23:27:11,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 119 states. [2020-09-04 23:27:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 536 transitions. [2020-09-04 23:27:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-09-04 23:27:11,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:27:11,327 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:27:11,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-09-04 23:27:11,328 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:27:11,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:27:11,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1134570094, now seen corresponding path program 58 times [2020-09-04 23:27:11,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:27:11,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105830870] [2020-09-04 23:27:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:27:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:27:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 23:27:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 23:27:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 23:27:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 23:27:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 23:27:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 23:27:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 23:27:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 23:27:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 23:27:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 23:27:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 23:27:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 23:27:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 23:27:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 23:27:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 23:27:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 23:27:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 23:27:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 23:27:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 23:27:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 23:27:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 23:27:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 23:27:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 23:27:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 23:27:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 23:27:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 23:27:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 23:27:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 23:27:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 23:27:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 23:27:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 23:27:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 23:27:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 23:27:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 23:27:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 23:27:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 23:27:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 23:27:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 23:27:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 23:27:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 23:27:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 23:27:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 23:27:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 23:27:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 23:27:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 23:27:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 23:27:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 23:27:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 23:27:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 23:27:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 23:27:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 23:27:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 23:27:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 23:27:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 23:27:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-09-04 23:27:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 23:27:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-09-04 23:27:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-09-04 23:27:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:27:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15109 backedges. 116 proven. 8381 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2020-09-04 23:27:33,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105830870] [2020-09-04 23:27:33,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:27:33,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2020-09-04 23:27:33,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331117484] [2020-09-04 23:27:33,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2020-09-04 23:27:33,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:27:33,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2020-09-04 23:27:33,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3603, Invalid=10917, Unknown=0, NotChecked=0, Total=14520 [2020-09-04 23:27:33,667 INFO L87 Difference]: Start difference. First operand 536 states and 536 transitions. Second operand 121 states.