/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 0.1.25-72570d3 [2020-08-22 23:05:39,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:05:39,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:05:39,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 23:05:39,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 23:05:39,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 23:05:39,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 23:05:39,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 23:05:39,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 23:05:39,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 23:05:39,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 23:05:39,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 23:05:39,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:05:39,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:05:39,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:05:39,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:05:39,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:05:39,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:05:39,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:05:39,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:05:39,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:05:39,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:05:39,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:05:39,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:05:39,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:05:39,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:05:39,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:05:39,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:05:39,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:05:39,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:05:39,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:05:39,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:05:39,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:05:39,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:05:39,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:05:39,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:05:39,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:05:39,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:05:39,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:05:39,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:05:39,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:05:39,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:05:39,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:05:39,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:05:39,832 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:05:39,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:05:39,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:05:39,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:05:39,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:05:39,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:05:39,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:05:39,833 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 [2020-08-22 23:05:40,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:05:40,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:05:40,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:05:40,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:05:40,119 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:05:40,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-08-22 23:05:40,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9868701a/9f1409e6964d4f0b85f16d20d4ffa0b4/FLAG9b1680bee [2020-08-22 23:05:40,562 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:05:40,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-08-22 23:05:40,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9868701a/9f1409e6964d4f0b85f16d20d4ffa0b4/FLAG9b1680bee [2020-08-22 23:05:40,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9868701a/9f1409e6964d4f0b85f16d20d4ffa0b4 [2020-08-22 23:05:40,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:05:40,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:05:40,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:05:40,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:05:40,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:05:40,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:05:40" (1/1) ... [2020-08-22 23:05:40,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79635ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40, skipping insertion in model container [2020-08-22 23:05:40,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:05:40" (1/1) ... [2020-08-22 23:05:40,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:05:41,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:05:41,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:05:41,208 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:05:41,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:05:41,238 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:05:41,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:41 WrapperNode [2020-08-22 23:05:41,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:05:41,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:05:41,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:05:41,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:05:41,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:41" (1/1) ... [2020-08-22 23:05:41,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:41" (1/1) ... [2020-08-22 23:05:41,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:41" (1/1) ... [2020-08-22 23:05:41,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:41" (1/1) ... [2020-08-22 23:05:41,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:41" (1/1) ... [2020-08-22 23:05:41,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:41" (1/1) ... [2020-08-22 23:05:41,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:41" (1/1) ... [2020-08-22 23:05:41,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:05:41,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:05:41,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:05:41,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:05:41,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:05:41,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:05:41,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:05:41,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:05:41,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:05:41,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:05:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:05:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:05:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:05:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:05:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:05:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:05:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:05:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:05:41,647 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:05:41,647 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 23:05:41,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:05:41 BoogieIcfgContainer [2020-08-22 23:05:41,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:05:41,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:05:41,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:05:41,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:05:41,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:05:40" (1/3) ... [2020-08-22 23:05:41,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a367439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:05:41, skipping insertion in model container [2020-08-22 23:05:41,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:41" (2/3) ... [2020-08-22 23:05:41,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a367439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:05:41, skipping insertion in model container [2020-08-22 23:05:41,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:05:41" (3/3) ... [2020-08-22 23:05:41,681 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-08-22 23:05:41,690 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:05:41,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:05:41,709 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:05:41,730 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:05:41,730 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:05:41,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:05:41,731 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:05:41,731 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:05:41,731 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:05:41,731 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:05:41,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:05:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-22 23:05:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 23:05:41,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:41,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:41,754 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:41,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:41,760 INFO L82 PathProgramCache]: Analyzing trace with hash 576660498, now seen corresponding path program 1 times [2020-08-22 23:05:41,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:41,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246975223] [2020-08-22 23:05:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:41,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246975223] [2020-08-22 23:05:42,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:05:42,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:05:42,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938471539] [2020-08-22 23:05:42,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:05:42,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:42,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:05:42,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:05:42,025 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-08-22 23:05:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:42,115 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-08-22 23:05:42,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:05:42,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-22 23:05:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:42,127 INFO L225 Difference]: With dead ends: 46 [2020-08-22 23:05:42,127 INFO L226 Difference]: Without dead ends: 25 [2020-08-22 23:05:42,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:05:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-22 23:05:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-08-22 23:05:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-22 23:05:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-08-22 23:05:42,169 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2020-08-22 23:05:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:42,170 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-08-22 23:05:42,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:05:42,170 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-08-22 23:05:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 23:05:42,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:42,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:42,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:05:42,173 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:42,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:42,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867886, now seen corresponding path program 1 times [2020-08-22 23:05:42,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:42,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112966272] [2020-08-22 23:05:42,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:42,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112966272] [2020-08-22 23:05:42,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:42,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 23:05:42,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458133879] [2020-08-22 23:05:42,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 23:05:42,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:42,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 23:05:42,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 23:05:42,301 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-08-22 23:05:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:42,400 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-08-22 23:05:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 23:05:42,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-08-22 23:05:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:42,403 INFO L225 Difference]: With dead ends: 36 [2020-08-22 23:05:42,403 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 23:05:42,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-22 23:05:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 23:05:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-22 23:05:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 23:05:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-08-22 23:05:42,415 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-08-22 23:05:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:42,416 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-08-22 23:05:42,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 23:05:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-08-22 23:05:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 23:05:42,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:42,418 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:42,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:05:42,418 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:42,419 INFO L82 PathProgramCache]: Analyzing trace with hash -677174382, now seen corresponding path program 2 times [2020-08-22 23:05:42,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:42,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185013849] [2020-08-22 23:05:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 23:05:42,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185013849] [2020-08-22 23:05:42,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:42,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 23:05:42,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776013659] [2020-08-22 23:05:42,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 23:05:42,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:42,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 23:05:42,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 23:05:42,553 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2020-08-22 23:05:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:42,695 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-08-22 23:05:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 23:05:42,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-08-22 23:05:42,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:42,697 INFO L225 Difference]: With dead ends: 45 [2020-08-22 23:05:42,698 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 23:05:42,699 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 [2020-08-22 23:05:42,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 23:05:42,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-08-22 23:05:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 23:05:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-08-22 23:05:42,711 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-08-22 23:05:42,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:42,712 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-08-22 23:05:42,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 23:05:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-08-22 23:05:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 23:05:42,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:42,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:42,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:05:42,714 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:42,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:42,715 INFO L82 PathProgramCache]: Analyzing trace with hash 785729966, now seen corresponding path program 3 times [2020-08-22 23:05:42,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:42,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499173775] [2020-08-22 23:05:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 23:05:42,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499173775] [2020-08-22 23:05:42,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:42,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 23:05:42,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702765147] [2020-08-22 23:05:42,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 23:05:42,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:42,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 23:05:42,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-22 23:05:42,861 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-08-22 23:05:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:43,013 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-08-22 23:05:43,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 23:05:43,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-08-22 23:05:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:43,015 INFO L225 Difference]: With dead ends: 54 [2020-08-22 23:05:43,015 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 23:05:43,016 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 [2020-08-22 23:05:43,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 23:05:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-08-22 23:05:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-22 23:05:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-08-22 23:05:43,027 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-08-22 23:05:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:43,028 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-08-22 23:05:43,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 23:05:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-08-22 23:05:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 23:05:43,029 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:43,030 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:43,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 23:05:43,030 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1857438482, now seen corresponding path program 4 times [2020-08-22 23:05:43,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:43,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111970286] [2020-08-22 23:05:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-22 23:05:43,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111970286] [2020-08-22 23:05:43,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:43,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 23:05:43,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505814695] [2020-08-22 23:05:43,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 23:05:43,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:43,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 23:05:43,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-08-22 23:05:43,196 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 13 states. [2020-08-22 23:05:43,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:43,388 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-08-22 23:05:43,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 23:05:43,389 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-08-22 23:05:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:43,390 INFO L225 Difference]: With dead ends: 63 [2020-08-22 23:05:43,390 INFO L226 Difference]: Without dead ends: 61 [2020-08-22 23:05:43,391 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 [2020-08-22 23:05:43,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-22 23:05:43,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-08-22 23:05:43,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-08-22 23:05:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-08-22 23:05:43,402 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-08-22 23:05:43,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:43,402 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-08-22 23:05:43,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 23:05:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-08-22 23:05:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 23:05:43,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:43,405 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:43,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 23:05:43,405 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:43,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:43,405 INFO L82 PathProgramCache]: Analyzing trace with hash -426927570, now seen corresponding path program 5 times [2020-08-22 23:05:43,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:43,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487535453] [2020-08-22 23:05:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 23:05:43,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487535453] [2020-08-22 23:05:43,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:43,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 23:05:43,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738516113] [2020-08-22 23:05:43,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 23:05:43,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:43,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 23:05:43,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-08-22 23:05:43,592 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 15 states. [2020-08-22 23:05:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:43,833 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-08-22 23:05:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 23:05:43,834 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-08-22 23:05:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:43,835 INFO L225 Difference]: With dead ends: 72 [2020-08-22 23:05:43,835 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 23:05:43,836 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 [2020-08-22 23:05:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 23:05:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-08-22 23:05:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 23:05:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-08-22 23:05:43,846 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-08-22 23:05:43,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:43,846 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-08-22 23:05:43,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 23:05:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-08-22 23:05:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 23:05:43,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:43,848 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:43,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 23:05:43,849 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:43,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:43,849 INFO L82 PathProgramCache]: Analyzing trace with hash -32472430, now seen corresponding path program 6 times [2020-08-22 23:05:43,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:43,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551101705] [2020-08-22 23:05:43,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-22 23:05:44,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551101705] [2020-08-22 23:05:44,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:44,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 23:05:44,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934184629] [2020-08-22 23:05:44,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 23:05:44,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:44,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 23:05:44,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-08-22 23:05:44,033 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 17 states. [2020-08-22 23:05:44,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:44,314 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-08-22 23:05:44,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 23:05:44,315 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-08-22 23:05:44,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:44,318 INFO L225 Difference]: With dead ends: 81 [2020-08-22 23:05:44,318 INFO L226 Difference]: Without dead ends: 79 [2020-08-22 23:05:44,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-22 23:05:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-22 23:05:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-08-22 23:05:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-22 23:05:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-08-22 23:05:44,336 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 65 [2020-08-22 23:05:44,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:44,339 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-08-22 23:05:44,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 23:05:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-08-22 23:05:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 23:05:44,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:44,341 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:44,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 23:05:44,341 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:44,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:44,341 INFO L82 PathProgramCache]: Analyzing trace with hash 872598190, now seen corresponding path program 7 times [2020-08-22 23:05:44,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:44,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973033146] [2020-08-22 23:05:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 14 proven. 119 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-22 23:05:44,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973033146] [2020-08-22 23:05:44,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:44,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 23:05:44,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836662591] [2020-08-22 23:05:44,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 23:05:44,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:44,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 23:05:44,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-08-22 23:05:44,632 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 19 states. [2020-08-22 23:05:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:44,981 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2020-08-22 23:05:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 23:05:44,981 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2020-08-22 23:05:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:44,983 INFO L225 Difference]: With dead ends: 90 [2020-08-22 23:05:44,984 INFO L226 Difference]: Without dead ends: 88 [2020-08-22 23:05:44,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=796, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 23:05:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-22 23:05:44,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-08-22 23:05:44,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-22 23:05:44,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-08-22 23:05:44,995 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 74 [2020-08-22 23:05:44,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:44,996 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-08-22 23:05:44,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 23:05:44,996 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-08-22 23:05:44,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 23:05:44,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:44,997 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:44,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 23:05:44,997 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:44,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:44,998 INFO L82 PathProgramCache]: Analyzing trace with hash -299245038, now seen corresponding path program 8 times [2020-08-22 23:05:44,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:44,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264572305] [2020-08-22 23:05:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 16 proven. 156 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-08-22 23:05:45,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264572305] [2020-08-22 23:05:45,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:45,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-22 23:05:45,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635765238] [2020-08-22 23:05:45,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 23:05:45,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:45,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 23:05:45,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-08-22 23:05:45,237 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 21 states. [2020-08-22 23:05:45,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:45,589 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-08-22 23:05:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 23:05:45,590 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-08-22 23:05:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:45,591 INFO L225 Difference]: With dead ends: 99 [2020-08-22 23:05:45,592 INFO L226 Difference]: Without dead ends: 97 [2020-08-22 23:05:45,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=411, Invalid=995, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 23:05:45,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-08-22 23:05:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-08-22 23:05:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-22 23:05:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-08-22 23:05:45,604 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 83 [2020-08-22 23:05:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:45,605 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-08-22 23:05:45,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 23:05:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-08-22 23:05:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 23:05:45,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:45,606 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:45,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 23:05:45,607 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:45,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:45,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1245914322, now seen corresponding path program 9 times [2020-08-22 23:05:45,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:45,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891364399] [2020-08-22 23:05:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:05:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 18 proven. 198 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-22 23:05:45,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891364399] [2020-08-22 23:05:45,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:45,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-22 23:05:45,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490142361] [2020-08-22 23:05:45,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 23:05:45,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:45,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 23:05:45,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-08-22 23:05:45,872 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 23 states. [2020-08-22 23:05:46,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:46,325 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-08-22 23:05:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-22 23:05:46,326 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2020-08-22 23:05:46,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:46,328 INFO L225 Difference]: With dead ends: 108 [2020-08-22 23:05:46,328 INFO L226 Difference]: Without dead ends: 106 [2020-08-22 23:05:46,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=506, Invalid=1216, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 23:05:46,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-08-22 23:05:46,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-08-22 23:05:46,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-22 23:05:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2020-08-22 23:05:46,341 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 92 [2020-08-22 23:05:46,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:46,341 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2020-08-22 23:05:46,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 23:05:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2020-08-22 23:05:46,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-22 23:05:46,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:46,343 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:46,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 23:05:46,344 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:46,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:46,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2038063506, now seen corresponding path program 10 times [2020-08-22 23:05:46,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:46,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070790041] [2020-08-22 23:05:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:05:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:05:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-08-22 23:05:46,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070790041] [2020-08-22 23:05:46,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:46,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-22 23:05:46,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111312062] [2020-08-22 23:05:46,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-22 23:05:46,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:46,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-22 23:05:46,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-22 23:05:46,635 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 25 states. [2020-08-22 23:05:47,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:47,195 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2020-08-22 23:05:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-22 23:05:47,196 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-08-22 23:05:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:47,197 INFO L225 Difference]: With dead ends: 117 [2020-08-22 23:05:47,197 INFO L226 Difference]: Without dead ends: 115 [2020-08-22 23:05:47,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=611, Invalid=1459, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 23:05:47,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-22 23:05:47,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-08-22 23:05:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-22 23:05:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-08-22 23:05:47,210 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 101 [2020-08-22 23:05:47,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:47,211 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-08-22 23:05:47,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-22 23:05:47,211 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-08-22 23:05:47,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-22 23:05:47,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:47,212 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:47,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 23:05:47,213 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:47,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:47,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2017708974, now seen corresponding path program 11 times [2020-08-22 23:05:47,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:47,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92708753] [2020-08-22 23:05:47,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:05:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:05:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:05:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 22 proven. 297 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-22 23:05:47,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92708753] [2020-08-22 23:05:47,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:47,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-08-22 23:05:47,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129339913] [2020-08-22 23:05:47,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-22 23:05:47,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:47,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-22 23:05:47,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-08-22 23:05:47,577 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 27 states. [2020-08-22 23:05:48,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:48,162 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2020-08-22 23:05:48,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-22 23:05:48,162 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 110 [2020-08-22 23:05:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:48,164 INFO L225 Difference]: With dead ends: 126 [2020-08-22 23:05:48,164 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 23:05:48,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=726, Invalid=1724, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 23:05:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 23:05:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-08-22 23:05:48,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-22 23:05:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2020-08-22 23:05:48,175 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 110 [2020-08-22 23:05:48,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:48,176 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2020-08-22 23:05:48,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-22 23:05:48,176 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2020-08-22 23:05:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-08-22 23:05:48,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:48,178 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:48,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 23:05:48,178 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:48,178 INFO L82 PathProgramCache]: Analyzing trace with hash 746193170, now seen corresponding path program 12 times [2020-08-22 23:05:48,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:48,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445653706] [2020-08-22 23:05:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:05:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:05:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:05:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:05:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 24 proven. 354 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-08-22 23:05:48,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445653706] [2020-08-22 23:05:48,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:48,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-22 23:05:48,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300378401] [2020-08-22 23:05:48,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 23:05:48,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:48,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 23:05:48,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-08-22 23:05:48,554 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 29 states. [2020-08-22 23:05:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:49,218 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2020-08-22 23:05:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 23:05:49,219 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 119 [2020-08-22 23:05:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:49,221 INFO L225 Difference]: With dead ends: 135 [2020-08-22 23:05:49,221 INFO L226 Difference]: Without dead ends: 133 [2020-08-22 23:05:49,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=851, Invalid=2011, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 23:05:49,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-22 23:05:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-08-22 23:05:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-22 23:05:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-08-22 23:05:49,232 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 119 [2020-08-22 23:05:49,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:49,233 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-08-22 23:05:49,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 23:05:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-08-22 23:05:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 23:05:49,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:49,235 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:49,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 23:05:49,235 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:49,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1981783086, now seen corresponding path program 13 times [2020-08-22 23:05:49,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:49,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389007739] [2020-08-22 23:05:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:05:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:05:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:05:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:05:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:05:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 26 proven. 416 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-22 23:05:49,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389007739] [2020-08-22 23:05:49,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:49,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-08-22 23:05:49,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356419684] [2020-08-22 23:05:49,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 23:05:49,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:49,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 23:05:49,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-08-22 23:05:49,684 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 31 states. [2020-08-22 23:05:50,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:50,437 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2020-08-22 23:05:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-22 23:05:50,438 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 128 [2020-08-22 23:05:50,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:50,439 INFO L225 Difference]: With dead ends: 144 [2020-08-22 23:05:50,440 INFO L226 Difference]: Without dead ends: 142 [2020-08-22 23:05:50,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=986, Invalid=2320, Unknown=0, NotChecked=0, Total=3306 [2020-08-22 23:05:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-22 23:05:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-08-22 23:05:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-22 23:05:50,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2020-08-22 23:05:50,450 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 128 [2020-08-22 23:05:50,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:50,451 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2020-08-22 23:05:50,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 23:05:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2020-08-22 23:05:50,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-22 23:05:50,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:50,452 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:50,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 23:05:50,453 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:50,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1705033874, now seen corresponding path program 14 times [2020-08-22 23:05:50,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:50,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255088485] [2020-08-22 23:05:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:50,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:50,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:50,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:50,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:51,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:51,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:05:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:05:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:51,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:05:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:51,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:05:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:05:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:05:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 28 proven. 483 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-08-22 23:05:51,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255088485] [2020-08-22 23:05:51,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:51,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-08-22 23:05:51,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888113652] [2020-08-22 23:05:51,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-08-22 23:05:51,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:51,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-08-22 23:05:51,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 23:05:51,053 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 33 states. [2020-08-22 23:05:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:52,005 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-08-22 23:05:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-22 23:05:52,006 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 137 [2020-08-22 23:05:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:52,008 INFO L225 Difference]: With dead ends: 153 [2020-08-22 23:05:52,008 INFO L226 Difference]: Without dead ends: 151 [2020-08-22 23:05:52,010 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 [2020-08-22 23:05:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-22 23:05:52,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-08-22 23:05:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-22 23:05:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2020-08-22 23:05:52,022 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 137 [2020-08-22 23:05:52,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:52,023 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2020-08-22 23:05:52,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-08-22 23:05:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2020-08-22 23:05:52,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 23:05:52,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:52,026 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:52,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 23:05:52,027 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:52,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:52,028 INFO L82 PathProgramCache]: Analyzing trace with hash 400051374, now seen corresponding path program 15 times [2020-08-22 23:05:52,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:52,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405313096] [2020-08-22 23:05:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:05:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:05:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:05:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:05:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:05:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:05:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:05:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 30 proven. 555 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-08-22 23:05:52,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405313096] [2020-08-22 23:05:52,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:52,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-08-22 23:05:52,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649273923] [2020-08-22 23:05:52,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-08-22 23:05:52,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:52,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-08-22 23:05:52,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 23:05:52,791 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 35 states. [2020-08-22 23:05:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:53,770 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2020-08-22 23:05:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-08-22 23:05:53,771 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 146 [2020-08-22 23:05:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:53,773 INFO L225 Difference]: With dead ends: 162 [2020-08-22 23:05:53,773 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 23:05:53,776 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 [2020-08-22 23:05:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 23:05:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-08-22 23:05:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 23:05:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2020-08-22 23:05:53,792 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 146 [2020-08-22 23:05:53,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:53,793 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2020-08-22 23:05:53,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-08-22 23:05:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2020-08-22 23:05:53,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-22 23:05:53,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:53,795 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:53,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 23:05:53,795 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:53,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:53,796 INFO L82 PathProgramCache]: Analyzing trace with hash -714694638, now seen corresponding path program 16 times [2020-08-22 23:05:53,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:53,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271564586] [2020-08-22 23:05:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:05:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:05:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:05:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:05:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:05:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:05:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:05:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:05:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 32 proven. 632 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-08-22 23:05:54,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271564586] [2020-08-22 23:05:54,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:54,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-08-22 23:05:54,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119237027] [2020-08-22 23:05:54,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-08-22 23:05:54,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:54,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-08-22 23:05:54,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 23:05:54,517 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 37 states. [2020-08-22 23:05:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:55,524 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2020-08-22 23:05:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-22 23:05:55,525 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 155 [2020-08-22 23:05:55,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:55,526 INFO L225 Difference]: With dead ends: 171 [2020-08-22 23:05:55,527 INFO L226 Difference]: Without dead ends: 169 [2020-08-22 23:05:55,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1451, Invalid=3379, Unknown=0, NotChecked=0, Total=4830 [2020-08-22 23:05:55,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-22 23:05:55,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-08-22 23:05:55,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-22 23:05:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-08-22 23:05:55,537 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 155 [2020-08-22 23:05:55,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:55,537 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-08-22 23:05:55,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-08-22 23:05:55,538 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-08-22 23:05:55,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-22 23:05:55,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:55,540 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:55,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 23:05:55,540 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:55,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1275732690, now seen corresponding path program 17 times [2020-08-22 23:05:55,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:55,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855761303] [2020-08-22 23:05:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:05:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:05:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:05:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:05:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:05:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:05:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:05:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:05:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:05:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 34 proven. 714 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-08-22 23:05:56,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855761303] [2020-08-22 23:05:56,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:56,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-08-22 23:05:56,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414390379] [2020-08-22 23:05:56,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-22 23:05:56,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:56,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-22 23:05:56,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 23:05:56,175 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 39 states. [2020-08-22 23:05:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:57,303 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2020-08-22 23:05:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-08-22 23:05:57,303 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 164 [2020-08-22 23:05:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:57,305 INFO L225 Difference]: With dead ends: 180 [2020-08-22 23:05:57,305 INFO L226 Difference]: Without dead ends: 178 [2020-08-22 23:05:57,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1626, Invalid=3776, Unknown=0, NotChecked=0, Total=5402 [2020-08-22 23:05:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-22 23:05:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-08-22 23:05:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-22 23:05:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-08-22 23:05:57,318 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 164 [2020-08-22 23:05:57,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:57,318 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-08-22 23:05:57,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-22 23:05:57,319 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-08-22 23:05:57,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-22 23:05:57,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:57,321 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:57,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 23:05:57,321 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:57,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:57,322 INFO L82 PathProgramCache]: Analyzing trace with hash -29122670, now seen corresponding path program 18 times [2020-08-22 23:05:57,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:57,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243932004] [2020-08-22 23:05:57,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:57,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:57,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:05:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:57,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:05:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:05:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:57,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:05:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:05:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:05:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:05:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:05:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:05:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:05:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:05:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:05:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:05:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:05:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:05:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:05:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:05:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1449 backedges. 36 proven. 801 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-08-22 23:05:58,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243932004] [2020-08-22 23:05:58,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:58,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-08-22 23:05:58,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220113534] [2020-08-22 23:05:58,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-08-22 23:05:58,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:58,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-08-22 23:05:58,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 23:05:58,043 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 41 states. [2020-08-22 23:05:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:59,279 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2020-08-22 23:05:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-08-22 23:05:59,289 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 173 [2020-08-22 23:05:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:59,291 INFO L225 Difference]: With dead ends: 189 [2020-08-22 23:05:59,291 INFO L226 Difference]: Without dead ends: 187 [2020-08-22 23:05:59,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1811, Invalid=4195, Unknown=0, NotChecked=0, Total=6006 [2020-08-22 23:05:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-08-22 23:05:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-08-22 23:05:59,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-22 23:05:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2020-08-22 23:05:59,303 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 173 [2020-08-22 23:05:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:59,303 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2020-08-22 23:05:59,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-08-22 23:05:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2020-08-22 23:05:59,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-08-22 23:05:59,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:59,307 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:59,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 23:05:59,307 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:59,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:59,308 INFO L82 PathProgramCache]: Analyzing trace with hash 251678126, now seen corresponding path program 19 times [2020-08-22 23:05:59,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:59,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411777144] [2020-08-22 23:05:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1615 backedges. 38 proven. 893 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-08-22 23:06:00,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411777144] [2020-08-22 23:06:00,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:00,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-08-22 23:06:00,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30965000] [2020-08-22 23:06:00,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-08-22 23:06:00,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:00,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-08-22 23:06:00,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 23:06:00,087 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 43 states. [2020-08-22 23:06:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:01,393 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2020-08-22 23:06:01,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-08-22 23:06:01,394 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 182 [2020-08-22 23:06:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:01,396 INFO L225 Difference]: With dead ends: 198 [2020-08-22 23:06:01,396 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 23:06:01,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2006, Invalid=4636, Unknown=0, NotChecked=0, Total=6642 [2020-08-22 23:06:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 23:06:01,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-08-22 23:06:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-08-22 23:06:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2020-08-22 23:06:01,408 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 182 [2020-08-22 23:06:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:01,408 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2020-08-22 23:06:01,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-08-22 23:06:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2020-08-22 23:06:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-08-22 23:06:01,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:01,411 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:01,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 23:06:01,411 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:01,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:01,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1263550702, now seen corresponding path program 20 times [2020-08-22 23:06:01,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:01,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189821094] [2020-08-22 23:06:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 40 proven. 990 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-08-22 23:06:02,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189821094] [2020-08-22 23:06:02,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:02,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-08-22 23:06:02,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67617187] [2020-08-22 23:06:02,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-08-22 23:06:02,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:02,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-08-22 23:06:02,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 23:06:02,282 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 45 states. [2020-08-22 23:06:03,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:03,914 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2020-08-22 23:06:03,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-08-22 23:06:03,915 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 191 [2020-08-22 23:06:03,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:03,916 INFO L225 Difference]: With dead ends: 207 [2020-08-22 23:06:03,916 INFO L226 Difference]: Without dead ends: 205 [2020-08-22 23:06:03,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2211, Invalid=5099, Unknown=0, NotChecked=0, Total=7310 [2020-08-22 23:06:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-08-22 23:06:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-08-22 23:06:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-22 23:06:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2020-08-22 23:06:03,928 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 191 [2020-08-22 23:06:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:03,928 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2020-08-22 23:06:03,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-08-22 23:06:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2020-08-22 23:06:03,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 23:06:03,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:03,930 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:03,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 23:06:03,930 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:03,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:03,931 INFO L82 PathProgramCache]: Analyzing trace with hash -612393426, now seen corresponding path program 21 times [2020-08-22 23:06:03,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:03,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617689006] [2020-08-22 23:06:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 42 proven. 1092 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-08-22 23:06:04,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617689006] [2020-08-22 23:06:04,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:04,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-08-22 23:06:04,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792869163] [2020-08-22 23:06:04,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-08-22 23:06:04,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:04,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-08-22 23:06:04,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 23:06:04,952 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 47 states. [2020-08-22 23:06:06,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:06,583 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2020-08-22 23:06:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-08-22 23:06:06,585 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 200 [2020-08-22 23:06:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:06,587 INFO L225 Difference]: With dead ends: 216 [2020-08-22 23:06:06,587 INFO L226 Difference]: Without dead ends: 214 [2020-08-22 23:06:06,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2426, Invalid=5584, Unknown=0, NotChecked=0, Total=8010 [2020-08-22 23:06:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-22 23:06:06,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-08-22 23:06:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-22 23:06:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2020-08-22 23:06:06,605 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 200 [2020-08-22 23:06:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:06,606 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2020-08-22 23:06:06,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-08-22 23:06:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2020-08-22 23:06:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-08-22 23:06:06,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:06,607 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:06,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 23:06:06,607 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:06,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:06,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1625096558, now seen corresponding path program 22 times [2020-08-22 23:06:06,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:06,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091765922] [2020-08-22 23:06:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2167 backedges. 44 proven. 1199 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-08-22 23:06:07,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091765922] [2020-08-22 23:06:07,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:07,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-08-22 23:06:07,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758577836] [2020-08-22 23:06:07,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-08-22 23:06:07,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:07,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-08-22 23:06:07,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2020-08-22 23:06:07,631 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 49 states. [2020-08-22 23:06:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:09,366 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2020-08-22 23:06:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-08-22 23:06:09,367 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 209 [2020-08-22 23:06:09,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:09,369 INFO L225 Difference]: With dead ends: 225 [2020-08-22 23:06:09,369 INFO L226 Difference]: Without dead ends: 223 [2020-08-22 23:06:09,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2651, Invalid=6091, Unknown=0, NotChecked=0, Total=8742 [2020-08-22 23:06:09,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-08-22 23:06:09,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-08-22 23:06:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-08-22 23:06:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2020-08-22 23:06:09,387 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 209 [2020-08-22 23:06:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:09,388 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2020-08-22 23:06:09,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-08-22 23:06:09,388 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2020-08-22 23:06:09,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-22 23:06:09,389 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:09,389 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:09,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 23:06:09,390 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:09,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:09,390 INFO L82 PathProgramCache]: Analyzing trace with hash 972803758, now seen corresponding path program 23 times [2020-08-22 23:06:09,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:09,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732428840] [2020-08-22 23:06:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 46 proven. 1311 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-08-22 23:06:10,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732428840] [2020-08-22 23:06:10,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:10,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-08-22 23:06:10,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605845284] [2020-08-22 23:06:10,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-08-22 23:06:10,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:10,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-08-22 23:06:10,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=1922, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 23:06:10,606 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 51 states. [2020-08-22 23:06:12,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:12,480 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2020-08-22 23:06:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-08-22 23:06:12,481 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 218 [2020-08-22 23:06:12,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:12,483 INFO L225 Difference]: With dead ends: 234 [2020-08-22 23:06:12,483 INFO L226 Difference]: Without dead ends: 232 [2020-08-22 23:06:12,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2886, Invalid=6620, Unknown=0, NotChecked=0, Total=9506 [2020-08-22 23:06:12,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-08-22 23:06:12,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-08-22 23:06:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-22 23:06:12,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2020-08-22 23:06:12,496 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 218 [2020-08-22 23:06:12,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:12,497 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2020-08-22 23:06:12,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-08-22 23:06:12,497 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2020-08-22 23:06:12,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-08-22 23:06:12,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:12,500 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:12,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 23:06:12,501 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:12,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:12,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1240113646, now seen corresponding path program 24 times [2020-08-22 23:06:12,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:12,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024803916] [2020-08-22 23:06:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:06:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 48 proven. 1428 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-08-22 23:06:13,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024803916] [2020-08-22 23:06:13,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:13,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-08-22 23:06:13,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152153711] [2020-08-22 23:06:13,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-08-22 23:06:13,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:13,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-08-22 23:06:13,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2077, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 23:06:13,738 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 53 states. [2020-08-22 23:06:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:15,817 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2020-08-22 23:06:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-08-22 23:06:15,818 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 227 [2020-08-22 23:06:15,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:15,819 INFO L225 Difference]: With dead ends: 243 [2020-08-22 23:06:15,819 INFO L226 Difference]: Without dead ends: 241 [2020-08-22 23:06:15,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3131, Invalid=7171, Unknown=0, NotChecked=0, Total=10302 [2020-08-22 23:06:15,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-22 23:06:15,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-08-22 23:06:15,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-22 23:06:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2020-08-22 23:06:15,834 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 227 [2020-08-22 23:06:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:15,834 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2020-08-22 23:06:15,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-08-22 23:06:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2020-08-22 23:06:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-08-22 23:06:15,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:15,836 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:15,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 23:06:15,836 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:15,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:15,837 INFO L82 PathProgramCache]: Analyzing trace with hash 956096302, now seen corresponding path program 25 times [2020-08-22 23:06:15,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:15,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797949674] [2020-08-22 23:06:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:06:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:06:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2800 backedges. 50 proven. 1550 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-08-22 23:06:17,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797949674] [2020-08-22 23:06:17,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:17,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-08-22 23:06:17,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279740650] [2020-08-22 23:06:17,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-08-22 23:06:17,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:17,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-08-22 23:06:17,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=2238, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 23:06:17,111 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 55 states. [2020-08-22 23:06:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:19,529 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2020-08-22 23:06:19,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-08-22 23:06:19,530 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 236 [2020-08-22 23:06:19,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:19,532 INFO L225 Difference]: With dead ends: 252 [2020-08-22 23:06:19,533 INFO L226 Difference]: Without dead ends: 250 [2020-08-22 23:06:19,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1973 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3386, Invalid=7744, Unknown=0, NotChecked=0, Total=11130 [2020-08-22 23:06:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-08-22 23:06:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-08-22 23:06:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-08-22 23:06:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2020-08-22 23:06:19,545 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 236 [2020-08-22 23:06:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:19,546 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2020-08-22 23:06:19,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-08-22 23:06:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2020-08-22 23:06:19,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-08-22 23:06:19,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:19,548 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:19,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 23:06:19,548 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:19,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1006707310, now seen corresponding path program 26 times [2020-08-22 23:06:19,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:19,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620471175] [2020-08-22 23:06:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:06:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:06:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:06:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 52 proven. 1677 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-08-22 23:06:21,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620471175] [2020-08-22 23:06:21,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:21,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-08-22 23:06:21,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062866125] [2020-08-22 23:06:21,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-08-22 23:06:21,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:21,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-08-22 23:06:21,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2020-08-22 23:06:21,232 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 57 states. [2020-08-22 23:06:24,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:24,032 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2020-08-22 23:06:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-08-22 23:06:24,033 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 245 [2020-08-22 23:06:24,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:24,035 INFO L225 Difference]: With dead ends: 261 [2020-08-22 23:06:24,035 INFO L226 Difference]: Without dead ends: 259 [2020-08-22 23:06:24,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3651, Invalid=8339, Unknown=0, NotChecked=0, Total=11990 [2020-08-22 23:06:24,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-22 23:06:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-08-22 23:06:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-22 23:06:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2020-08-22 23:06:24,048 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 245 [2020-08-22 23:06:24,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:24,049 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2020-08-22 23:06:24,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-08-22 23:06:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2020-08-22 23:06:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-22 23:06:24,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:24,051 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:24,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 23:06:24,051 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:24,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1426771886, now seen corresponding path program 27 times [2020-08-22 23:06:24,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:24,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294821077] [2020-08-22 23:06:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:06:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:06:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:06:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:06:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 54 proven. 1809 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-08-22 23:06:25,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294821077] [2020-08-22 23:06:25,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:25,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-08-22 23:06:25,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176102058] [2020-08-22 23:06:25,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-08-22 23:06:25,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:25,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-08-22 23:06:25,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=844, Invalid=2578, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 23:06:25,551 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 59 states. [2020-08-22 23:06:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:28,398 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2020-08-22 23:06:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-08-22 23:06:28,399 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 254 [2020-08-22 23:06:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:28,401 INFO L225 Difference]: With dead ends: 270 [2020-08-22 23:06:28,401 INFO L226 Difference]: Without dead ends: 268 [2020-08-22 23:06:28,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3926, Invalid=8956, Unknown=0, NotChecked=0, Total=12882 [2020-08-22 23:06:28,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-22 23:06:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-08-22 23:06:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-08-22 23:06:28,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2020-08-22 23:06:28,414 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 254 [2020-08-22 23:06:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:28,415 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2020-08-22 23:06:28,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-08-22 23:06:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2020-08-22 23:06:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-08-22 23:06:28,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:28,417 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:28,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-22 23:06:28,417 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:28,417 INFO L82 PathProgramCache]: Analyzing trace with hash -447251182, now seen corresponding path program 28 times [2020-08-22 23:06:28,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:28,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033874612] [2020-08-22 23:06:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:06:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:06:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:06:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:06:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:06:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3514 backedges. 56 proven. 1946 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-08-22 23:06:30,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033874612] [2020-08-22 23:06:30,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:30,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-08-22 23:06:30,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642414629] [2020-08-22 23:06:30,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-08-22 23:06:30,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:30,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-08-22 23:06:30,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=2757, Unknown=0, NotChecked=0, Total=3660 [2020-08-22 23:06:30,025 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 61 states. [2020-08-22 23:06:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:32,851 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2020-08-22 23:06:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-08-22 23:06:32,852 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 263 [2020-08-22 23:06:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:32,853 INFO L225 Difference]: With dead ends: 279 [2020-08-22 23:06:32,854 INFO L226 Difference]: Without dead ends: 277 [2020-08-22 23:06:32,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4211, Invalid=9595, Unknown=0, NotChecked=0, Total=13806 [2020-08-22 23:06:32,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-08-22 23:06:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-08-22 23:06:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-08-22 23:06:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2020-08-22 23:06:32,869 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 263 [2020-08-22 23:06:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:32,870 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2020-08-22 23:06:32,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-08-22 23:06:32,870 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2020-08-22 23:06:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-08-22 23:06:32,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:32,871 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:32,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-22 23:06:32,872 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:32,872 INFO L82 PathProgramCache]: Analyzing trace with hash -122838994, now seen corresponding path program 29 times [2020-08-22 23:06:32,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:32,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041127445] [2020-08-22 23:06:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:06:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:06:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:06:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:06:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:06:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:06:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3770 backedges. 58 proven. 2088 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-08-22 23:06:34,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041127445] [2020-08-22 23:06:34,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:34,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-08-22 23:06:34,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840653238] [2020-08-22 23:06:34,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-08-22 23:06:34,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:34,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-08-22 23:06:34,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2020-08-22 23:06:34,618 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 63 states. [2020-08-22 23:06:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:37,634 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2020-08-22 23:06:37,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-08-22 23:06:37,635 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 272 [2020-08-22 23:06:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:37,637 INFO L225 Difference]: With dead ends: 288 [2020-08-22 23:06:37,638 INFO L226 Difference]: Without dead ends: 286 [2020-08-22 23:06:37,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2637 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4506, Invalid=10256, Unknown=0, NotChecked=0, Total=14762 [2020-08-22 23:06:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-22 23:06:37,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-08-22 23:06:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-08-22 23:06:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2020-08-22 23:06:37,650 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 272 [2020-08-22 23:06:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:37,651 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2020-08-22 23:06:37,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-08-22 23:06:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2020-08-22 23:06:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-08-22 23:06:37,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:37,653 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:37,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-22 23:06:37,653 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:37,654 INFO L82 PathProgramCache]: Analyzing trace with hash 144129170, now seen corresponding path program 30 times [2020-08-22 23:06:37,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:37,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967360618] [2020-08-22 23:06:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:06:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:06:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:06:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:06:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:06:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:06:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:06:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4035 backedges. 60 proven. 2235 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-08-22 23:06:39,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967360618] [2020-08-22 23:06:39,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:39,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-08-22 23:06:39,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615125872] [2020-08-22 23:06:39,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-08-22 23:06:39,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:39,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-08-22 23:06:39,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2020-08-22 23:06:39,671 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 65 states. [2020-08-22 23:06:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:43,203 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2020-08-22 23:06:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-08-22 23:06:43,204 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 281 [2020-08-22 23:06:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:43,206 INFO L225 Difference]: With dead ends: 297 [2020-08-22 23:06:43,206 INFO L226 Difference]: Without dead ends: 295 [2020-08-22 23:06:43,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2818 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4811, Invalid=10939, Unknown=0, NotChecked=0, Total=15750 [2020-08-22 23:06:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-08-22 23:06:43,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-08-22 23:06:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-22 23:06:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2020-08-22 23:06:43,219 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 281 [2020-08-22 23:06:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:43,219 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2020-08-22 23:06:43,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-08-22 23:06:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2020-08-22 23:06:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-08-22 23:06:43,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:43,221 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:43,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-22 23:06:43,221 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:43,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:43,222 INFO L82 PathProgramCache]: Analyzing trace with hash -59944786, now seen corresponding path program 31 times [2020-08-22 23:06:43,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:43,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022465222] [2020-08-22 23:06:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:06:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:06:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:06:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:06:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:06:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:06:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:06:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:06:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 62 proven. 2387 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-08-22 23:06:45,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022465222] [2020-08-22 23:06:45,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:45,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-08-22 23:06:45,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961144796] [2020-08-22 23:06:45,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-08-22 23:06:45,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:45,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-08-22 23:06:45,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3330, Unknown=0, NotChecked=0, Total=4422 [2020-08-22 23:06:45,198 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 67 states. [2020-08-22 23:06:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:48,660 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2020-08-22 23:06:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-08-22 23:06:48,660 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 290 [2020-08-22 23:06:48,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:48,663 INFO L225 Difference]: With dead ends: 306 [2020-08-22 23:06:48,663 INFO L226 Difference]: Without dead ends: 304 [2020-08-22 23:06:48,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5126, Invalid=11644, Unknown=0, NotChecked=0, Total=16770 [2020-08-22 23:06:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-08-22 23:06:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2020-08-22 23:06:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-08-22 23:06:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2020-08-22 23:06:48,676 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 290 [2020-08-22 23:06:48,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:48,677 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2020-08-22 23:06:48,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-08-22 23:06:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2020-08-22 23:06:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-08-22 23:06:48,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:48,679 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:48,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-22 23:06:48,679 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:48,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:48,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1849039890, now seen corresponding path program 32 times [2020-08-22 23:06:48,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:48,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952858692] [2020-08-22 23:06:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:06:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:06:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:06:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:06:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:06:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:06:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:06:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:06:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:06:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 64 proven. 2544 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-08-22 23:06:50,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952858692] [2020-08-22 23:06:50,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:50,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-08-22 23:06:50,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74980316] [2020-08-22 23:06:50,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-08-22 23:06:50,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:50,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-08-22 23:06:50,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2020-08-22 23:06:50,802 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 69 states. [2020-08-22 23:06:54,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:06:54,507 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2020-08-22 23:06:54,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-08-22 23:06:54,508 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 299 [2020-08-22 23:06:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:06:54,510 INFO L225 Difference]: With dead ends: 315 [2020-08-22 23:06:54,510 INFO L226 Difference]: Without dead ends: 313 [2020-08-22 23:06:54,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3198 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5451, Invalid=12371, Unknown=0, NotChecked=0, Total=17822 [2020-08-22 23:06:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-08-22 23:06:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2020-08-22 23:06:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-22 23:06:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2020-08-22 23:06:54,525 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 299 [2020-08-22 23:06:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:06:54,525 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2020-08-22 23:06:54,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-08-22 23:06:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2020-08-22 23:06:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-22 23:06:54,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:06:54,527 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:06:54,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-22 23:06:54,528 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:06:54,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:06:54,529 INFO L82 PathProgramCache]: Analyzing trace with hash 651288878, now seen corresponding path program 33 times [2020-08-22 23:06:54,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:06:54,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139296119] [2020-08-22 23:06:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:06:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:06:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:06:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:06:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:06:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:06:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:06:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:06:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:06:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:06:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:06:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:06:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:06:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:06:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:06:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:06:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:06:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:06:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:06:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:06:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:06:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:06:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:06:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:06:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:06:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:06:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:06:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:06:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:06:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:06:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:06:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:06:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:06:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:06:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:06:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:06:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4884 backedges. 66 proven. 2706 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-08-22 23:06:56,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139296119] [2020-08-22 23:06:56,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:06:56,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-08-22 23:06:56,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587392608] [2020-08-22 23:06:56,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-08-22 23:06:56,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:06:56,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-08-22 23:06:56,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=3742, Unknown=0, NotChecked=0, Total=4970 [2020-08-22 23:06:56,862 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 71 states. [2020-08-22 23:07:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:07:00,939 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2020-08-22 23:07:00,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-08-22 23:07:00,940 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 308 [2020-08-22 23:07:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:07:00,942 INFO L225 Difference]: With dead ends: 324 [2020-08-22 23:07:00,942 INFO L226 Difference]: Without dead ends: 322 [2020-08-22 23:07:00,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3397 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=5786, Invalid=13120, Unknown=0, NotChecked=0, Total=18906 [2020-08-22 23:07:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-22 23:07:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2020-08-22 23:07:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-08-22 23:07:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2020-08-22 23:07:00,955 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 308 [2020-08-22 23:07:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:07:00,956 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2020-08-22 23:07:00,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-08-22 23:07:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2020-08-22 23:07:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-22 23:07:00,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:07:00,958 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:07:00,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-22 23:07:00,959 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:07:00,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:07:00,959 INFO L82 PathProgramCache]: Analyzing trace with hash 682367890, now seen corresponding path program 34 times [2020-08-22 23:07:00,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:07:00,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054740846] [2020-08-22 23:07:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:07:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:07:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:07:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:07:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:07:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:07:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:07:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:07:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:07:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:07:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:07:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:07:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:07:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:07:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:07:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:07:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:07:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:07:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:07:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:07:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:07:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:07:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:07:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:07:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:07:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:07:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:07:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:07:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:07:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:07:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:07:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:07:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:07:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:07:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:07:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:07:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 68 proven. 2873 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-08-22 23:07:03,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054740846] [2020-08-22 23:07:03,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:07:03,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-08-22 23:07:03,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982261484] [2020-08-22 23:07:03,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-08-22 23:07:03,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:07:03,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-08-22 23:07:03,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=3957, Unknown=0, NotChecked=0, Total=5256 [2020-08-22 23:07:03,356 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 73 states. [2020-08-22 23:07:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:07:07,659 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2020-08-22 23:07:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-08-22 23:07:07,662 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 317 [2020-08-22 23:07:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:07:07,664 INFO L225 Difference]: With dead ends: 333 [2020-08-22 23:07:07,664 INFO L226 Difference]: Without dead ends: 331 [2020-08-22 23:07:07,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=6131, Invalid=13891, Unknown=0, NotChecked=0, Total=20022 [2020-08-22 23:07:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-22 23:07:07,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2020-08-22 23:07:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-08-22 23:07:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2020-08-22 23:07:07,675 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 317 [2020-08-22 23:07:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:07:07,676 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2020-08-22 23:07:07,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-08-22 23:07:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2020-08-22 23:07:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-22 23:07:07,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:07:07,678 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:07:07,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-22 23:07:07,679 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:07:07,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:07:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1402777170, now seen corresponding path program 35 times [2020-08-22 23:07:07,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:07:07,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295009647] [2020-08-22 23:07:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:07:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:07:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:07:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:07:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:07:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:07:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:07:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:07:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:07:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:07:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:07:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:07:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:07:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:07:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:07:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:07:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:07:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:07:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:07:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:07:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:07:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:07:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:07:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:07:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:07:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:07:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:07:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:07:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:07:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:07:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:07:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:07:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:07:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:07:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:07:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:07:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:07:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5495 backedges. 70 proven. 3045 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-08-22 23:07:10,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295009647] [2020-08-22 23:07:10,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:07:10,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-08-22 23:07:10,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202783382] [2020-08-22 23:07:10,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-08-22 23:07:10,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:07:10,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-08-22 23:07:10,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1372, Invalid=4178, Unknown=0, NotChecked=0, Total=5550 [2020-08-22 23:07:10,263 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 75 states. [2020-08-22 23:07:14,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:07:14,923 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2020-08-22 23:07:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-08-22 23:07:14,924 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 326 [2020-08-22 23:07:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:07:14,926 INFO L225 Difference]: With dead ends: 342 [2020-08-22 23:07:14,927 INFO L226 Difference]: Without dead ends: 340 [2020-08-22 23:07:14,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3813 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=6486, Invalid=14684, Unknown=0, NotChecked=0, Total=21170 [2020-08-22 23:07:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-22 23:07:14,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2020-08-22 23:07:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-08-22 23:07:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2020-08-22 23:07:14,939 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 326 [2020-08-22 23:07:14,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:07:14,939 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2020-08-22 23:07:14,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-08-22 23:07:14,940 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2020-08-22 23:07:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-08-22 23:07:14,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:07:14,942 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:07:14,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-22 23:07:14,942 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:07:14,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:07:14,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1670300910, now seen corresponding path program 36 times [2020-08-22 23:07:14,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:07:14,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549467776] [2020-08-22 23:07:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:07:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:07:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:07:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:07:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:07:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:07:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:07:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:07:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:07:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:07:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:07:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:07:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:07:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:07:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:07:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:07:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:07:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:07:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:07:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:07:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:07:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:07:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:07:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:07:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:07:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:07:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:07:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:07:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:07:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:07:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:07:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:07:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:07:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:07:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:07:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:07:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:07:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:07:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 72 proven. 3222 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-08-22 23:07:17,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549467776] [2020-08-22 23:07:17,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:07:17,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-08-22 23:07:17,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802785464] [2020-08-22 23:07:17,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-08-22 23:07:17,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:07:17,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-08-22 23:07:17,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=4405, Unknown=0, NotChecked=0, Total=5852 [2020-08-22 23:07:17,697 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 77 states. [2020-08-22 23:07:22,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:07:22,292 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2020-08-22 23:07:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-08-22 23:07:22,294 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 335 [2020-08-22 23:07:22,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:07:22,295 INFO L225 Difference]: With dead ends: 351 [2020-08-22 23:07:22,295 INFO L226 Difference]: Without dead ends: 349 [2020-08-22 23:07:22,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4030 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=6851, Invalid=15499, Unknown=0, NotChecked=0, Total=22350 [2020-08-22 23:07:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-22 23:07:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-08-22 23:07:22,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-08-22 23:07:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2020-08-22 23:07:22,308 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 335 [2020-08-22 23:07:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:07:22,309 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2020-08-22 23:07:22,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-08-22 23:07:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2020-08-22 23:07:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-08-22 23:07:22,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:07:22,311 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:07:22,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-22 23:07:22,312 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:07:22,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:07:22,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1347837394, now seen corresponding path program 37 times [2020-08-22 23:07:22,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:07:22,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757140963] [2020-08-22 23:07:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:07:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:07:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:07:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:07:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:07:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:07:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:07:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:07:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:07:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:07:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:07:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:07:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:07:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:07:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:07:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:07:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:07:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:07:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:07:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:07:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:07:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:07:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:07:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:07:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:07:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:07:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:07:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:07:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:07:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:07:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:07:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:07:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:07:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:07:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:07:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:07:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:07:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:07:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:07:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6142 backedges. 74 proven. 3404 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-08-22 23:07:25,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757140963] [2020-08-22 23:07:25,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:07:25,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-08-22 23:07:25,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136997705] [2020-08-22 23:07:25,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-08-22 23:07:25,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:07:25,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-08-22 23:07:25,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2020-08-22 23:07:25,256 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 79 states. [2020-08-22 23:07:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:07:30,049 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2020-08-22 23:07:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-08-22 23:07:30,049 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 344 [2020-08-22 23:07:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:07:30,052 INFO L225 Difference]: With dead ends: 360 [2020-08-22 23:07:30,052 INFO L226 Difference]: Without dead ends: 358 [2020-08-22 23:07:30,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4253 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=7226, Invalid=16336, Unknown=0, NotChecked=0, Total=23562 [2020-08-22 23:07:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-08-22 23:07:30,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-08-22 23:07:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-08-22 23:07:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2020-08-22 23:07:30,064 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 344 [2020-08-22 23:07:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:07:30,065 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2020-08-22 23:07:30,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-08-22 23:07:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2020-08-22 23:07:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-08-22 23:07:30,067 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:07:30,067 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:07:30,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-08-22 23:07:30,068 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:07:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:07:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash -165230, now seen corresponding path program 38 times [2020-08-22 23:07:30,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:07:30,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971854542] [2020-08-22 23:07:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:07:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:07:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:07:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:07:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:07:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:07:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:07:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:07:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:07:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:07:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:07:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:07:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:07:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:07:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:07:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:07:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:07:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:07:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:07:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:07:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:07:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:07:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:07:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:07:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:07:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:07:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:07:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:07:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:07:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:07:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:07:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:07:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:07:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:07:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:07:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:07:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:07:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:07:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:07:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:07:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6479 backedges. 76 proven. 3591 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-08-22 23:07:33,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971854542] [2020-08-22 23:07:33,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:07:33,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-08-22 23:07:33,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318592082] [2020-08-22 23:07:33,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-08-22 23:07:33,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:07:33,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-08-22 23:07:33,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=4877, Unknown=0, NotChecked=0, Total=6480 [2020-08-22 23:07:33,207 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 81 states. [2020-08-22 23:07:38,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:07:38,500 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2020-08-22 23:07:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-08-22 23:07:38,501 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 353 [2020-08-22 23:07:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:07:38,503 INFO L225 Difference]: With dead ends: 369 [2020-08-22 23:07:38,504 INFO L226 Difference]: Without dead ends: 367 [2020-08-22 23:07:38,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4482 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=7611, Invalid=17195, Unknown=0, NotChecked=0, Total=24806 [2020-08-22 23:07:38,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-22 23:07:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-08-22 23:07:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-08-22 23:07:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2020-08-22 23:07:38,515 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 353 [2020-08-22 23:07:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:07:38,516 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2020-08-22 23:07:38,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-08-22 23:07:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2020-08-22 23:07:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-08-22 23:07:38,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:07:38,518 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:07:38,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-08-22 23:07:38,519 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:07:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:07:38,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1054027090, now seen corresponding path program 39 times [2020-08-22 23:07:38,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:07:38,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946783304] [2020-08-22 23:07:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:07:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:07:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:07:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:07:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:07:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:07:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:07:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:07:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:07:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:07:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:07:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:07:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:07:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:07:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:07:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:07:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:07:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:07:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:07:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:07:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:07:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:07:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:07:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:07:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:07:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:07:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:07:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:07:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:07:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:07:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:07:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:07:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:07:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:07:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:07:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:07:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:07:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:07:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:07:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:07:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:07:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6825 backedges. 78 proven. 3783 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-08-22 23:07:41,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946783304] [2020-08-22 23:07:41,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:07:41,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-08-22 23:07:41,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709317068] [2020-08-22 23:07:41,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-08-22 23:07:41,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:07:41,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-08-22 23:07:41,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5122, Unknown=0, NotChecked=0, Total=6806 [2020-08-22 23:07:41,857 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 83 states. [2020-08-22 23:07:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:07:47,788 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2020-08-22 23:07:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-08-22 23:07:47,789 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 362 [2020-08-22 23:07:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:07:47,791 INFO L225 Difference]: With dead ends: 378 [2020-08-22 23:07:47,791 INFO L226 Difference]: Without dead ends: 376 [2020-08-22 23:07:47,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=8006, Invalid=18076, Unknown=0, NotChecked=0, Total=26082 [2020-08-22 23:07:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-08-22 23:07:47,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2020-08-22 23:07:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-08-22 23:07:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2020-08-22 23:07:47,803 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 362 [2020-08-22 23:07:47,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:07:47,804 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2020-08-22 23:07:47,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-08-22 23:07:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2020-08-22 23:07:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-08-22 23:07:47,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:07:47,806 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:07:47,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-08-22 23:07:47,807 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:07:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:07:47,807 INFO L82 PathProgramCache]: Analyzing trace with hash -607593966, now seen corresponding path program 40 times [2020-08-22 23:07:47,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:07:47,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053702733] [2020-08-22 23:07:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:07:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:07:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:07:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:07:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:07:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:07:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:07:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:07:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:07:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:07:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:07:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:07:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:07:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:07:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:07:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:07:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:07:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:07:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:07:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:07:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:07:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:07:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:07:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:07:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:07:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:07:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:07:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:07:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:07:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:07:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:07:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:07:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:07:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:07:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:07:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:07:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:07:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:07:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:07:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:07:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:07:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:07:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:07:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7180 backedges. 80 proven. 3980 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2020-08-22 23:07:51,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053702733] [2020-08-22 23:07:51,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:07:51,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-08-22 23:07:51,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481875877] [2020-08-22 23:07:51,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-08-22 23:07:51,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:07:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-08-22 23:07:51,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=5373, Unknown=0, NotChecked=0, Total=7140 [2020-08-22 23:07:51,389 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 85 states. [2020-08-22 23:07:57,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:07:57,579 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2020-08-22 23:07:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-08-22 23:07:57,580 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 371 [2020-08-22 23:07:57,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:07:57,582 INFO L225 Difference]: With dead ends: 387 [2020-08-22 23:07:57,582 INFO L226 Difference]: Without dead ends: 385 [2020-08-22 23:07:57,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4958 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=8411, Invalid=18979, Unknown=0, NotChecked=0, Total=27390 [2020-08-22 23:07:57,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-08-22 23:07:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2020-08-22 23:07:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-08-22 23:07:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2020-08-22 23:07:57,593 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 371 [2020-08-22 23:07:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:07:57,594 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2020-08-22 23:07:57,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-08-22 23:07:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2020-08-22 23:07:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-08-22 23:07:57,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:07:57,597 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:07:57,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-08-22 23:07:57,597 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:07:57,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:07:57,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1601495854, now seen corresponding path program 41 times [2020-08-22 23:07:57,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:07:57,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570708260] [2020-08-22 23:07:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:07:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:08:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:08:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:08:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:08:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:08:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:08:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:08:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:08:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:08:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:08:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:08:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:08:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:08:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:08:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:08:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:08:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:08:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:08:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:08:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:08:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:08:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:08:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:08:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:08:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:08:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:08:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:08:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:08:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:08:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:08:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:08:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:08:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:08:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:08:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:08:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:08:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:08:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:08:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:08:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:08:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:08:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:08:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7544 backedges. 82 proven. 4182 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-08-22 23:08:01,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570708260] [2020-08-22 23:08:01,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:08:01,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-08-22 23:08:01,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488408130] [2020-08-22 23:08:01,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-08-22 23:08:01,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:08:01,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-08-22 23:08:01,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=5630, Unknown=0, NotChecked=0, Total=7482 [2020-08-22 23:08:01,387 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 87 states. [2020-08-22 23:08:07,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:08:07,494 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2020-08-22 23:08:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-08-22 23:08:07,495 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 380 [2020-08-22 23:08:07,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:08:07,497 INFO L225 Difference]: With dead ends: 396 [2020-08-22 23:08:07,497 INFO L226 Difference]: Without dead ends: 394 [2020-08-22 23:08:07,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5205 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=8826, Invalid=19904, Unknown=0, NotChecked=0, Total=28730 [2020-08-22 23:08:07,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-22 23:08:07,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-08-22 23:08:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-08-22 23:08:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2020-08-22 23:08:07,510 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 380 [2020-08-22 23:08:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:08:07,511 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2020-08-22 23:08:07,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-08-22 23:08:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2020-08-22 23:08:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-08-22 23:08:07,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:08:07,514 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:08:07,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-08-22 23:08:07,514 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:08:07,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:08:07,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1974773358, now seen corresponding path program 42 times [2020-08-22 23:08:07,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:08:07,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938757468] [2020-08-22 23:08:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:08:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:08:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:08:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:08:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:08:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:08:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:08:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:08:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:08:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:08:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:08:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:08:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:08:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:08:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:08:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:08:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:08:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:08:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:08:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:08:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:08:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:08:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:08:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:08:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:08:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:08:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:08:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:08:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:08:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:08:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:08:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:08:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:08:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:08:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:08:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:08:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:08:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:08:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:08:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:08:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:08:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:08:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:08:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:08:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7917 backedges. 84 proven. 4389 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2020-08-22 23:08:11,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938757468] [2020-08-22 23:08:11,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:08:11,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-08-22 23:08:11,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710863314] [2020-08-22 23:08:11,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-08-22 23:08:11,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:08:11,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-08-22 23:08:11,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1939, Invalid=5893, Unknown=0, NotChecked=0, Total=7832 [2020-08-22 23:08:11,549 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 89 states. [2020-08-22 23:08:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:08:18,388 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2020-08-22 23:08:18,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-08-22 23:08:18,389 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 389 [2020-08-22 23:08:18,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:08:18,391 INFO L225 Difference]: With dead ends: 405 [2020-08-22 23:08:18,391 INFO L226 Difference]: Without dead ends: 403 [2020-08-22 23:08:18,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5458 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=9251, Invalid=20851, Unknown=0, NotChecked=0, Total=30102 [2020-08-22 23:08:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-22 23:08:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2020-08-22 23:08:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-08-22 23:08:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2020-08-22 23:08:18,404 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 389 [2020-08-22 23:08:18,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:08:18,404 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2020-08-22 23:08:18,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-08-22 23:08:18,405 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2020-08-22 23:08:18,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-08-22 23:08:18,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:08:18,408 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:08:18,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-08-22 23:08:18,408 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:08:18,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:08:18,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1997132718, now seen corresponding path program 43 times [2020-08-22 23:08:18,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:08:18,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247355796] [2020-08-22 23:08:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:08:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:08:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:08:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:08:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:08:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:08:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:08:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:08:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:08:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:08:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:08:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:08:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:08:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:08:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:08:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:08:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:08:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:08:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:08:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:08:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:08:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:08:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:08:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:08:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:08:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:08:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:08:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:08:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:08:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:08:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:08:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:08:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:08:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:08:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:08:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:08:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:08:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:08:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:08:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:08:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:08:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:08:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:08:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:08:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:08:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8299 backedges. 86 proven. 4601 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-08-22 23:08:22,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247355796] [2020-08-22 23:08:22,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:08:22,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2020-08-22 23:08:22,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649020035] [2020-08-22 23:08:22,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-08-22 23:08:22,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:08:22,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-08-22 23:08:22,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=6162, Unknown=0, NotChecked=0, Total=8190 [2020-08-22 23:08:22,754 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 91 states. [2020-08-22 23:08:30,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:08:30,067 INFO L93 Difference]: Finished difference Result 414 states and 414 transitions. [2020-08-22 23:08:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-08-22 23:08:30,068 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 398 [2020-08-22 23:08:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:08:30,071 INFO L225 Difference]: With dead ends: 414 [2020-08-22 23:08:30,071 INFO L226 Difference]: Without dead ends: 412 [2020-08-22 23:08:30,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5717 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=9686, Invalid=21820, Unknown=0, NotChecked=0, Total=31506 [2020-08-22 23:08:30,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-22 23:08:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2020-08-22 23:08:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-08-22 23:08:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2020-08-22 23:08:30,084 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 398 [2020-08-22 23:08:30,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:08:30,084 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2020-08-22 23:08:30,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-08-22 23:08:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2020-08-22 23:08:30,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-08-22 23:08:30,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:08:30,087 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:08:30,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-08-22 23:08:30,088 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:08:30,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:08:30,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1208157934, now seen corresponding path program 44 times [2020-08-22 23:08:30,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:08:30,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492309591] [2020-08-22 23:08:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:08:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:08:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:08:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:08:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:08:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:08:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:08:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:08:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:08:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:08:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:08:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:08:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:08:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:08:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:08:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:08:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:08:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:08:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:08:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:08:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:08:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:08:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:08:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:08:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:08:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:08:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:08:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:08:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:08:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:08:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:08:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:08:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:08:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:08:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:08:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:08:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:08:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:08:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:08:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:08:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:08:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:08:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:08:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:08:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:08:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:08:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8690 backedges. 88 proven. 4818 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2020-08-22 23:08:34,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492309591] [2020-08-22 23:08:34,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:08:34,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2020-08-22 23:08:34,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050745761] [2020-08-22 23:08:34,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-08-22 23:08:34,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:08:34,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-08-22 23:08:34,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2119, Invalid=6437, Unknown=0, NotChecked=0, Total=8556 [2020-08-22 23:08:34,625 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 93 states. [2020-08-22 23:08:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:08:41,952 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2020-08-22 23:08:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-08-22 23:08:41,953 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 407 [2020-08-22 23:08:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:08:41,956 INFO L225 Difference]: With dead ends: 423 [2020-08-22 23:08:41,956 INFO L226 Difference]: Without dead ends: 421 [2020-08-22 23:08:41,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5982 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=10131, Invalid=22811, Unknown=0, NotChecked=0, Total=32942 [2020-08-22 23:08:41,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-22 23:08:41,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2020-08-22 23:08:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-22 23:08:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2020-08-22 23:08:41,969 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 407 [2020-08-22 23:08:41,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:08:41,970 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2020-08-22 23:08:41,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-08-22 23:08:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2020-08-22 23:08:41,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-08-22 23:08:41,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:08:41,973 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:08:41,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-08-22 23:08:41,973 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:08:41,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:08:41,974 INFO L82 PathProgramCache]: Analyzing trace with hash -495737810, now seen corresponding path program 45 times [2020-08-22 23:08:41,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:08:41,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272079383] [2020-08-22 23:08:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:08:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:08:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:08:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:08:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:08:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:08:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:08:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:08:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:08:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:08:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:08:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:08:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:08:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:08:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:08:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:08:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:08:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:08:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:08:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:08:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:08:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:08:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:08:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:08:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:08:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:08:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:08:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:08:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:08:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:08:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:08:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:08:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:08:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:08:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:08:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:08:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:08:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:08:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:08:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:08:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:08:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:08:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:08:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:08:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:08:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:08:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:08:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:08:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 90 proven. 5040 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-08-22 23:08:46,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272079383] [2020-08-22 23:08:46,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:08:46,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2020-08-22 23:08:46,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920210507] [2020-08-22 23:08:46,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-08-22 23:08:46,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:08:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-08-22 23:08:46,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2212, Invalid=6718, Unknown=0, NotChecked=0, Total=8930 [2020-08-22 23:08:46,855 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 95 states. [2020-08-22 23:08:55,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:08:55,190 INFO L93 Difference]: Finished difference Result 432 states and 432 transitions. [2020-08-22 23:08:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-08-22 23:08:55,191 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 416 [2020-08-22 23:08:55,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:08:55,194 INFO L225 Difference]: With dead ends: 432 [2020-08-22 23:08:55,194 INFO L226 Difference]: Without dead ends: 430 [2020-08-22 23:08:55,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6253 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=10586, Invalid=23824, Unknown=0, NotChecked=0, Total=34410 [2020-08-22 23:08:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-08-22 23:08:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2020-08-22 23:08:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-08-22 23:08:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2020-08-22 23:08:55,210 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 416 [2020-08-22 23:08:55,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:08:55,211 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2020-08-22 23:08:55,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-08-22 23:08:55,211 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2020-08-22 23:08:55,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-08-22 23:08:55,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:08:55,214 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:08:55,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-08-22 23:08:55,215 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:08:55,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:08:55,215 INFO L82 PathProgramCache]: Analyzing trace with hash -480921454, now seen corresponding path program 46 times [2020-08-22 23:08:55,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:08:55,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417547740] [2020-08-22 23:08:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:08:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:09:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:09:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:09:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:09:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:09:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:09:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:09:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:09:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:09:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:09:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:09:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:09:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:09:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:09:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:09:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:09:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:09:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:09:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:09:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:09:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:09:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:09:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:09:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:09:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:09:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:09:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:09:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:09:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:09:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:09:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:09:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:09:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:09:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:09:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:09:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:09:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:09:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:09:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:09:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:09:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:09:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:09:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:09:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:09:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:09:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:09:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:09:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9499 backedges. 92 proven. 5267 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2020-08-22 23:09:00,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417547740] [2020-08-22 23:09:00,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:09:00,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2020-08-22 23:09:00,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611461945] [2020-08-22 23:09:00,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-08-22 23:09:00,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:09:00,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-08-22 23:09:00,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=7005, Unknown=0, NotChecked=0, Total=9312 [2020-08-22 23:09:00,468 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 97 states. [2020-08-22 23:09:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:09:09,426 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2020-08-22 23:09:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-08-22 23:09:09,428 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 425 [2020-08-22 23:09:09,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:09:09,431 INFO L225 Difference]: With dead ends: 441 [2020-08-22 23:09:09,431 INFO L226 Difference]: Without dead ends: 439 [2020-08-22 23:09:09,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=11051, Invalid=24859, Unknown=0, NotChecked=0, Total=35910 [2020-08-22 23:09:09,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-22 23:09:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2020-08-22 23:09:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-22 23:09:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-08-22 23:09:09,445 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 425 [2020-08-22 23:09:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:09:09,445 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-08-22 23:09:09,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-08-22 23:09:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-08-22 23:09:09,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-08-22 23:09:09,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:09:09,449 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:09:09,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-08-22 23:09:09,449 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:09:09,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:09:09,449 INFO L82 PathProgramCache]: Analyzing trace with hash -365275986, now seen corresponding path program 47 times [2020-08-22 23:09:09,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:09:09,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054423321] [2020-08-22 23:09:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:09:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:09:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:09:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:09:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:09:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:09:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:09:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:09:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:09:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:09:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:09:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:09:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:09:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:09:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:09:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:09:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:09:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:09:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:09:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:09:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:09:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:09:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:09:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:09:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:09:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:09:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:09:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:09:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:09:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:09:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:09:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:09:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:09:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:09:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:09:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:09:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:09:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:09:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:09:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:09:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:09:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:09:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:09:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:09:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:09:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:09:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:09:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:09:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:14,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:09:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9917 backedges. 94 proven. 5499 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-08-22 23:09:15,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054423321] [2020-08-22 23:09:15,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:09:15,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2020-08-22 23:09:15,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958380013] [2020-08-22 23:09:15,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-08-22 23:09:15,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:09:15,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-08-22 23:09:15,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2404, Invalid=7298, Unknown=0, NotChecked=0, Total=9702 [2020-08-22 23:09:15,193 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 99 states. [2020-08-22 23:09:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:09:25,802 INFO L93 Difference]: Finished difference Result 450 states and 450 transitions. [2020-08-22 23:09:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-08-22 23:09:25,804 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 434 [2020-08-22 23:09:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:09:25,808 INFO L225 Difference]: With dead ends: 450 [2020-08-22 23:09:25,808 INFO L226 Difference]: Without dead ends: 448 [2020-08-22 23:09:25,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6813 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=11526, Invalid=25916, Unknown=0, NotChecked=0, Total=37442 [2020-08-22 23:09:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-08-22 23:09:25,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2020-08-22 23:09:25,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-08-22 23:09:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2020-08-22 23:09:25,830 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 434 [2020-08-22 23:09:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:09:25,831 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2020-08-22 23:09:25,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-08-22 23:09:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2020-08-22 23:09:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-08-22 23:09:25,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:09:25,838 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:09:25,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-08-22 23:09:25,838 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:09:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:09:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash -590505966, now seen corresponding path program 48 times [2020-08-22 23:09:25,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:09:25,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997847969] [2020-08-22 23:09:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:09:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:09:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:09:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:09:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:09:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:09:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:09:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:09:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:09:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:09:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:09:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:09:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:09:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:09:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:09:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:09:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:09:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:09:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:09:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:09:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:09:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:09:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:09:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:09:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:09:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:09:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:09:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:09:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:09:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:09:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:09:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:09:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:09:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:09:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:09:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:09:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:09:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:09:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:09:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:09:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:09:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:09:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:09:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:09:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:09:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:09:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:09:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:09:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:09:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:09:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10344 backedges. 96 proven. 5736 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2020-08-22 23:09:33,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997847969] [2020-08-22 23:09:33,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:09:33,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2020-08-22 23:09:33,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716138870] [2020-08-22 23:09:33,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-08-22 23:09:33,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:09:33,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-08-22 23:09:33,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2503, Invalid=7597, Unknown=0, NotChecked=0, Total=10100 [2020-08-22 23:09:33,640 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 101 states. [2020-08-22 23:09:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:09:44,049 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2020-08-22 23:09:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-08-22 23:09:44,050 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 443 [2020-08-22 23:09:44,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:09:44,053 INFO L225 Difference]: With dead ends: 459 [2020-08-22 23:09:44,054 INFO L226 Difference]: Without dead ends: 457 [2020-08-22 23:09:44,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7102 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=12011, Invalid=26995, Unknown=0, NotChecked=0, Total=39006 [2020-08-22 23:09:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-08-22 23:09:44,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2020-08-22 23:09:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-08-22 23:09:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2020-08-22 23:09:44,066 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 443 [2020-08-22 23:09:44,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:09:44,066 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2020-08-22 23:09:44,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-08-22 23:09:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2020-08-22 23:09:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-08-22 23:09:44,069 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:09:44,069 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:09:44,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-08-22 23:09:44,070 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:09:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:09:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -991566546, now seen corresponding path program 49 times [2020-08-22 23:09:44,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:09:44,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037394782] [2020-08-22 23:09:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:09:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:09:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:09:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:09:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:09:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:09:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:09:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:09:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:09:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:09:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:09:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:09:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:09:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:09:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:09:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:09:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:09:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:09:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:09:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:09:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:09:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:09:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:09:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:09:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:09:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:09:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:09:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:09:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:09:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:09:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:09:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:09:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:09:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:09:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:09:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:09:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:09:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:09:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:09:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:09:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:09:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:09:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:09:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:09:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:09:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:09:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:09:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:09:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:09:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:09:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:09:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:09:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 10780 backedges. 98 proven. 5978 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-08-22 23:09:50,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037394782] [2020-08-22 23:09:50,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:09:50,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2020-08-22 23:09:50,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556240042] [2020-08-22 23:09:50,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-08-22 23:09:50,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:09:50,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-08-22 23:09:50,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2604, Invalid=7902, Unknown=0, NotChecked=0, Total=10506 [2020-08-22 23:09:50,503 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 103 states. [2020-08-22 23:10:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:10:02,013 INFO L93 Difference]: Finished difference Result 468 states and 468 transitions. [2020-08-22 23:10:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-08-22 23:10:02,015 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 452 [2020-08-22 23:10:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:10:02,018 INFO L225 Difference]: With dead ends: 468 [2020-08-22 23:10:02,018 INFO L226 Difference]: Without dead ends: 466 [2020-08-22 23:10:02,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7397 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=12506, Invalid=28096, Unknown=0, NotChecked=0, Total=40602 [2020-08-22 23:10:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-22 23:10:02,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 464. [2020-08-22 23:10:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-08-22 23:10:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 464 transitions. [2020-08-22 23:10:02,032 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 464 transitions. Word has length 452 [2020-08-22 23:10:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:10:02,033 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 464 transitions. [2020-08-22 23:10:02,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-08-22 23:10:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 464 transitions. [2020-08-22 23:10:02,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-08-22 23:10:02,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:10:02,036 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:10:02,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-08-22 23:10:02,037 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:10:02,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:10:02,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1188861842, now seen corresponding path program 50 times [2020-08-22 23:10:02,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:10:02,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929795035] [2020-08-22 23:10:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:10:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:10:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:10:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:10:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:10:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:10:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:10:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:10:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:10:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:10:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:10:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:10:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:10:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:10:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:10:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:10:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:10:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:10:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:10:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:10:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:10:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:10:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:10:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:10:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:10:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:10:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:10:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:10:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:10:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:10:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:10:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:10:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:10:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:10:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:10:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:10:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:10:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:10:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:10:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:10:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:10:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:10:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:10:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:10:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:10:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:10:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:10:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:10:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:10:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:10:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:10:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:10:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 11225 backedges. 100 proven. 6225 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2020-08-22 23:10:09,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929795035] [2020-08-22 23:10:09,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:10:09,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2020-08-22 23:10:09,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128287922] [2020-08-22 23:10:09,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-08-22 23:10:09,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:10:09,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-08-22 23:10:09,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=8213, Unknown=0, NotChecked=0, Total=10920 [2020-08-22 23:10:09,296 INFO L87 Difference]: Start difference. First operand 464 states and 464 transitions. Second operand 105 states. [2020-08-22 23:10:22,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:10:22,128 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2020-08-22 23:10:22,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-08-22 23:10:22,129 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 461 [2020-08-22 23:10:22,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:10:22,133 INFO L225 Difference]: With dead ends: 477 [2020-08-22 23:10:22,133 INFO L226 Difference]: Without dead ends: 475 [2020-08-22 23:10:22,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7698 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=13011, Invalid=29219, Unknown=0, NotChecked=0, Total=42230 [2020-08-22 23:10:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-08-22 23:10:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2020-08-22 23:10:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-08-22 23:10:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 473 transitions. [2020-08-22 23:10:22,148 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 473 transitions. Word has length 461 [2020-08-22 23:10:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:10:22,149 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 473 transitions. [2020-08-22 23:10:22,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-08-22 23:10:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 473 transitions. [2020-08-22 23:10:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-08-22 23:10:22,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:10:22,153 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:10:22,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-08-22 23:10:22,153 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:10:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:10:22,153 INFO L82 PathProgramCache]: Analyzing trace with hash 385766830, now seen corresponding path program 51 times [2020-08-22 23:10:22,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:10:22,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793868306] [2020-08-22 23:10:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:10:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:10:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:10:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:10:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:10:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:10:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:10:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:10:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:10:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:10:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:10:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:10:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:10:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:10:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:10:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:10:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:10:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:10:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:10:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:10:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:10:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:10:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:10:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:10:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:10:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:10:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:10:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:10:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:10:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:10:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:10:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:10:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:10:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:10:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:10:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:10:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:10:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:10:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:10:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:10:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:10:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:10:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:10:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:10:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:10:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:10:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:10:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:10:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:10:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:10:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:10:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:10:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:10:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11679 backedges. 102 proven. 6477 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-08-22 23:10:29,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793868306] [2020-08-22 23:10:29,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:10:29,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2020-08-22 23:10:29,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243571748] [2020-08-22 23:10:29,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-08-22 23:10:29,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:10:29,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-08-22 23:10:29,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2812, Invalid=8530, Unknown=0, NotChecked=0, Total=11342 [2020-08-22 23:10:29,747 INFO L87 Difference]: Start difference. First operand 473 states and 473 transitions. Second operand 107 states. [2020-08-22 23:10:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:10:42,505 INFO L93 Difference]: Finished difference Result 486 states and 486 transitions. [2020-08-22 23:10:42,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-08-22 23:10:42,507 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 470 [2020-08-22 23:10:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:10:42,510 INFO L225 Difference]: With dead ends: 486 [2020-08-22 23:10:42,510 INFO L226 Difference]: Without dead ends: 484 [2020-08-22 23:10:42,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8005 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=13526, Invalid=30364, Unknown=0, NotChecked=0, Total=43890 [2020-08-22 23:10:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-08-22 23:10:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 482. [2020-08-22 23:10:42,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-08-22 23:10:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 482 transitions. [2020-08-22 23:10:42,522 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 482 transitions. Word has length 470 [2020-08-22 23:10:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:10:42,522 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 482 transitions. [2020-08-22 23:10:42,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-08-22 23:10:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 482 transitions. [2020-08-22 23:10:42,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-08-22 23:10:42,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:10:42,526 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:10:42,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-08-22 23:10:42,526 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:10:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:10:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash 368752402, now seen corresponding path program 52 times [2020-08-22 23:10:42,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:10:42,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551489468] [2020-08-22 23:10:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:10:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:10:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:10:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:10:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:10:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:10:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:10:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:10:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:10:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:10:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:10:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:10:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:10:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:10:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:10:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:10:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:10:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:10:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:10:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:10:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:10:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:10:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:10:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:10:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:10:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:10:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:10:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:10:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:10:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:10:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:10:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:10:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:10:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:10:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:10:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:10:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:10:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:10:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:10:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:10:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:10:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:10:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:10:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:10:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:10:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:10:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:10:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:10:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:10:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:10:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:10:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:10:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:10:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:10:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:10:51,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12142 backedges. 104 proven. 6734 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2020-08-22 23:10:51,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551489468] [2020-08-22 23:10:51,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:10:51,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2020-08-22 23:10:51,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344184481] [2020-08-22 23:10:51,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-08-22 23:10:51,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:10:51,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-08-22 23:10:51,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2919, Invalid=8853, Unknown=0, NotChecked=0, Total=11772 [2020-08-22 23:10:51,508 INFO L87 Difference]: Start difference. First operand 482 states and 482 transitions. Second operand 109 states. [2020-08-22 23:11:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:11:07,134 INFO L93 Difference]: Finished difference Result 495 states and 495 transitions. [2020-08-22 23:11:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-08-22 23:11:07,136 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 479 [2020-08-22 23:11:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:11:07,139 INFO L225 Difference]: With dead ends: 495 [2020-08-22 23:11:07,139 INFO L226 Difference]: Without dead ends: 493 [2020-08-22 23:11:07,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8318 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=14051, Invalid=31531, Unknown=0, NotChecked=0, Total=45582 [2020-08-22 23:11:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-08-22 23:11:07,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2020-08-22 23:11:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-08-22 23:11:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2020-08-22 23:11:07,150 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 479 [2020-08-22 23:11:07,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:11:07,151 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2020-08-22 23:11:07,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-08-22 23:11:07,151 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2020-08-22 23:11:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-08-22 23:11:07,153 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:11:07,153 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:11:07,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-08-22 23:11:07,154 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:11:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:11:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1930143278, now seen corresponding path program 53 times [2020-08-22 23:11:07,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:11:07,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876562116] [2020-08-22 23:11:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:11:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:11:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:11:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:11:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:11:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:11:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:11:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:11:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:11:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:11:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:11:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:11:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:11:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:11:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:11:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:11:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:11:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:11:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:11:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:11:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:11:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:11:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:11:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:11:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:11:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:11:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:11:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:11:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:11:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:11:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:11:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:11:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:11:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:11:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:11:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:11:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:11:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:11:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:11:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:11:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:11:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:11:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:11:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:11:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:11:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:11:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:11:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:11:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:11:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:11:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:11:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:11:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:11:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:11:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:11:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12614 backedges. 106 proven. 6996 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-08-22 23:11:16,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876562116] [2020-08-22 23:11:16,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:11:16,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2020-08-22 23:11:16,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356514943] [2020-08-22 23:11:16,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-08-22 23:11:16,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:11:16,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-08-22 23:11:16,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3028, Invalid=9182, Unknown=0, NotChecked=0, Total=12210 [2020-08-22 23:11:16,225 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 111 states. [2020-08-22 23:11:32,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:11:32,538 INFO L93 Difference]: Finished difference Result 504 states and 504 transitions. [2020-08-22 23:11:32,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-08-22 23:11:32,540 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 488 [2020-08-22 23:11:32,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:11:32,543 INFO L225 Difference]: With dead ends: 504 [2020-08-22 23:11:32,544 INFO L226 Difference]: Without dead ends: 502 [2020-08-22 23:11:32,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8637 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=14586, Invalid=32720, Unknown=0, NotChecked=0, Total=47306 [2020-08-22 23:11:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-22 23:11:32,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2020-08-22 23:11:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-08-22 23:11:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 500 transitions. [2020-08-22 23:11:32,556 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 500 transitions. Word has length 488 [2020-08-22 23:11:32,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:11:32,556 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 500 transitions. [2020-08-22 23:11:32,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-08-22 23:11:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 500 transitions. [2020-08-22 23:11:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-08-22 23:11:32,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:11:32,559 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:11:32,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-08-22 23:11:32,559 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:11:32,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:11:32,559 INFO L82 PathProgramCache]: Analyzing trace with hash 278918802, now seen corresponding path program 54 times [2020-08-22 23:11:32,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:11:32,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359140855] [2020-08-22 23:11:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:11:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:11:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:11:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:11:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:11:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:11:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:11:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:11:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:11:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:11:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:11:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:11:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:11:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:11:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:11:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:11:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:11:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:11:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:11:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:11:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:11:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:11:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:11:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:11:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:11:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:11:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:11:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:11:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:11:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:11:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:11:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:11:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:11:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:11:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:11:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:11:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:11:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:11:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:11:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:11:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:11:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:11:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:11:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:11:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:11:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:11:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:11:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:11:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:11:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:11:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:11:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:11:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:11:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:11:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:11:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-08-22 23:11:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:11:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13095 backedges. 108 proven. 7263 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2020-08-22 23:11:42,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359140855] [2020-08-22 23:11:42,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:11:42,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2020-08-22 23:11:42,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90259225] [2020-08-22 23:11:42,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-08-22 23:11:42,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:11:42,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-08-22 23:11:42,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=9517, Unknown=0, NotChecked=0, Total=12656 [2020-08-22 23:11:42,658 INFO L87 Difference]: Start difference. First operand 500 states and 500 transitions. Second operand 113 states. [2020-08-22 23:12:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:12:01,210 INFO L93 Difference]: Finished difference Result 513 states and 513 transitions. [2020-08-22 23:12:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2020-08-22 23:12:01,212 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 497 [2020-08-22 23:12:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:12:01,215 INFO L225 Difference]: With dead ends: 513 [2020-08-22 23:12:01,215 INFO L226 Difference]: Without dead ends: 511 [2020-08-22 23:12:01,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8962 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=15131, Invalid=33931, Unknown=0, NotChecked=0, Total=49062 [2020-08-22 23:12:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-08-22 23:12:01,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2020-08-22 23:12:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-08-22 23:12:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 509 transitions. [2020-08-22 23:12:01,228 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 509 transitions. Word has length 497 [2020-08-22 23:12:01,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:12:01,228 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 509 transitions. [2020-08-22 23:12:01,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 113 states. [2020-08-22 23:12:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 509 transitions. [2020-08-22 23:12:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-08-22 23:12:01,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:12:01,231 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:12:01,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-08-22 23:12:01,231 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:12:01,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:12:01,231 INFO L82 PathProgramCache]: Analyzing trace with hash -644491602, now seen corresponding path program 55 times [2020-08-22 23:12:01,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:12:01,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016689443] [2020-08-22 23:12:01,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:12:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:12:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:12:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:12:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:12:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:12:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:12:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:12:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:12:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:12:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:12:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:12:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:12:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:12:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:12:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:12:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:12:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:12:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:12:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:12:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:12:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:12:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:12:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:12:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:12:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:12:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:12:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:12:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:12:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:12:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:12:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:12:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:12:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:12:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:12:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:12:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:12:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:12:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:12:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:12:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:12:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:12:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:12:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:12:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:12:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:12:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:12:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:12:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:12:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:12:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:12:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:12:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:12:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:12:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:12:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-08-22 23:12:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 23:12:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 13585 backedges. 110 proven. 7535 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2020-08-22 23:12:12,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016689443] [2020-08-22 23:12:12,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:12:12,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2020-08-22 23:12:12,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658679520] [2020-08-22 23:12:12,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2020-08-22 23:12:12,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:12:12,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2020-08-22 23:12:12,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=9858, Unknown=0, NotChecked=0, Total=13110 [2020-08-22 23:12:12,356 INFO L87 Difference]: Start difference. First operand 509 states and 509 transitions. Second operand 115 states. [2020-08-22 23:12:33,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:12:33,369 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2020-08-22 23:12:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2020-08-22 23:12:33,371 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 506 [2020-08-22 23:12:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:12:33,374 INFO L225 Difference]: With dead ends: 522 [2020-08-22 23:12:33,374 INFO L226 Difference]: Without dead ends: 520 [2020-08-22 23:12:33,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9293 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=15686, Invalid=35164, Unknown=0, NotChecked=0, Total=50850 [2020-08-22 23:12:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-08-22 23:12:33,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518. [2020-08-22 23:12:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-08-22 23:12:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 518 transitions. [2020-08-22 23:12:33,387 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 518 transitions. Word has length 506 [2020-08-22 23:12:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:12:33,387 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 518 transitions. [2020-08-22 23:12:33,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 115 states. [2020-08-22 23:12:33,387 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 518 transitions. [2020-08-22 23:12:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-08-22 23:12:33,390 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:12:33,390 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:12:33,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-08-22 23:12:33,390 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:12:33,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:12:33,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1329878546, now seen corresponding path program 56 times [2020-08-22 23:12:33,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:12:33,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389923772] [2020-08-22 23:12:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:12:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:12:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:12:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:12:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:12:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:12:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:12:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:12:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:12:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:12:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:12:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:12:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:12:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:12:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:12:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:12:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:12:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:12:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:12:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:12:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:12:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:12:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:12:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:12:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:12:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:12:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:12:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:12:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:12:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:12:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:12:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:12:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:12:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:12:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:12:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:12:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:12:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:12:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:12:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:12:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:12:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:12:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:12:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:12:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:12:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:12:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:12:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:12:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:12:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:12:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:12:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:12:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:12:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:12:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:12:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-08-22 23:12:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 23:12:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:45,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-22 23:12:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:12:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14084 backedges. 112 proven. 7812 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2020-08-22 23:12:46,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389923772] [2020-08-22 23:12:46,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:12:46,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2020-08-22 23:12:46,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825925119] [2020-08-22 23:12:46,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2020-08-22 23:12:46,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:12:46,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2020-08-22 23:12:46,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=10205, Unknown=0, NotChecked=0, Total=13572 [2020-08-22 23:12:46,093 INFO L87 Difference]: Start difference. First operand 518 states and 518 transitions. Second operand 117 states. [2020-08-22 23:13:07,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:13:07,115 INFO L93 Difference]: Finished difference Result 531 states and 531 transitions. [2020-08-22 23:13:07,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2020-08-22 23:13:07,117 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 515 [2020-08-22 23:13:07,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:13:07,120 INFO L225 Difference]: With dead ends: 531 [2020-08-22 23:13:07,120 INFO L226 Difference]: Without dead ends: 529 [2020-08-22 23:13:07,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9630 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=16251, Invalid=36419, Unknown=0, NotChecked=0, Total=52670 [2020-08-22 23:13:07,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-22 23:13:07,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2020-08-22 23:13:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-22 23:13:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 527 transitions. [2020-08-22 23:13:07,134 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 527 transitions. Word has length 515 [2020-08-22 23:13:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:13:07,134 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 527 transitions. [2020-08-22 23:13:07,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 117 states. [2020-08-22 23:13:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 527 transitions. [2020-08-22 23:13:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-08-22 23:13:07,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:13:07,137 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:13:07,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-08-22 23:13:07,137 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:13:07,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:13:07,138 INFO L82 PathProgramCache]: Analyzing trace with hash 958719790, now seen corresponding path program 57 times [2020-08-22 23:13:07,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:13:07,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207760643] [2020-08-22 23:13:07,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:13:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:13:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:13:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:13:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:13:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:13:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:13:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:13:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:13:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:13:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:13:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:13:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:13:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:13:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:13:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:13:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:13:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:13:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:13:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:13:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:13:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:13:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:13:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:13:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:13:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:13:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:13:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:13:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:13:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:13:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:13:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:13:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:13:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:13:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:13:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:13:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:13:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:13:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:13:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:13:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:13:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:13:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:13:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:13:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:13:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:13:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:13:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:13:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:13:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:13:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:13:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:13:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:13:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:13:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:13:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-08-22 23:13:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 23:13:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-22 23:13:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-08-22 23:13:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:13:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 14592 backedges. 114 proven. 8094 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2020-08-22 23:13:20,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207760643] [2020-08-22 23:13:20,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:13:20,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2020-08-22 23:13:20,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131322335] [2020-08-22 23:13:20,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2020-08-22 23:13:20,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:13:20,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2020-08-22 23:13:20,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3484, Invalid=10558, Unknown=0, NotChecked=0, Total=14042 [2020-08-22 23:13:20,993 INFO L87 Difference]: Start difference. First operand 527 states and 527 transitions. Second operand 119 states. [2020-08-22 23:13:45,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:13:45,777 INFO L93 Difference]: Finished difference Result 540 states and 540 transitions. [2020-08-22 23:13:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2020-08-22 23:13:45,780 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 524 [2020-08-22 23:13:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:13:45,784 INFO L225 Difference]: With dead ends: 540 [2020-08-22 23:13:45,784 INFO L226 Difference]: Without dead ends: 538 [2020-08-22 23:13:45,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9973 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=16826, Invalid=37696, Unknown=0, NotChecked=0, Total=54522 [2020-08-22 23:13:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-08-22 23:13:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2020-08-22 23:13:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-08-22 23:13:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 536 transitions. [2020-08-22 23:13:45,801 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 536 transitions. Word has length 524 [2020-08-22 23:13:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:13:45,802 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 536 transitions. [2020-08-22 23:13:45,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 119 states. [2020-08-22 23:13:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 536 transitions. [2020-08-22 23:13:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-08-22 23:13:45,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:13:45,805 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:13:45,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-08-22 23:13:45,805 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:13:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:13:45,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1134570094, now seen corresponding path program 58 times [2020-08-22 23:13:45,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:13:45,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326324660] [2020-08-22 23:13:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:13:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:14:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:14:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:14:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:14:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:14:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:14:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:14:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:14:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:14:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:14:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:14:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:14:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:14:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:14:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:14:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:14:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:14:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:14:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:14:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:14:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:14:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:14:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:14:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:14:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:14:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:14:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:14:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:14:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:14:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:14:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:14:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:14:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:14:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:14:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:14:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:14:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:14:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:14:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:14:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:14:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:14:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:14:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:14:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:14:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:14:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:14:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:14:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:14:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:14:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:14:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:14:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:14:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:14:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:14:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-08-22 23:14:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 23:14:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-22 23:14:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-08-22 23:14:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-08-22 23:14:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15109 backedges. 116 proven. 8381 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2020-08-22 23:14:01,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326324660] [2020-08-22 23:14:01,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:14:01,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2020-08-22 23:14:01,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423454839] [2020-08-22 23:14:01,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2020-08-22 23:14:01,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:14:01,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2020-08-22 23:14:01,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3603, Invalid=10917, Unknown=0, NotChecked=0, Total=14520 [2020-08-22 23:14:01,472 INFO L87 Difference]: Start difference. First operand 536 states and 536 transitions. Second operand 121 states. [2020-08-22 23:14:28,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:14:28,161 INFO L93 Difference]: Finished difference Result 549 states and 549 transitions. [2020-08-22 23:14:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2020-08-22 23:14:28,164 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 533 [2020-08-22 23:14:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:14:28,168 INFO L225 Difference]: With dead ends: 549 [2020-08-22 23:14:28,168 INFO L226 Difference]: Without dead ends: 547 [2020-08-22 23:14:28,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10322 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=17411, Invalid=38995, Unknown=0, NotChecked=0, Total=56406 [2020-08-22 23:14:28,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-08-22 23:14:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2020-08-22 23:14:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-08-22 23:14:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 545 transitions. [2020-08-22 23:14:28,185 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 545 transitions. Word has length 533 [2020-08-22 23:14:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:14:28,186 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 545 transitions. [2020-08-22 23:14:28,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 121 states. [2020-08-22 23:14:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 545 transitions. [2020-08-22 23:14:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-08-22 23:14:28,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:14:28,190 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:14:28,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-08-22 23:14:28,191 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:14:28,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:14:28,191 INFO L82 PathProgramCache]: Analyzing trace with hash -297740370, now seen corresponding path program 59 times [2020-08-22 23:14:28,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:14:28,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401241713] [2020-08-22 23:14:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:14:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:14:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:14:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:14:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:14:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:14:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:14:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:14:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:14:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:14:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:14:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:14:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:14:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:14:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:14:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:14:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:14:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:14:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:14:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:14:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:14:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:14:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:14:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:14:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:14:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:14:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:14:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:14:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:14:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:14:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:14:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:14:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:14:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:14:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:14:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:14:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:14:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:14:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:14:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:14:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:14:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:14:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:14:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:14:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:14:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:14:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:14:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:14:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:14:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:14:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:14:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:14:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:14:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:14:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:14:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-08-22 23:14:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 23:14:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-22 23:14:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-08-22 23:14:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-08-22 23:14:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:44,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-08-22 23:14:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:14:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 15635 backedges. 118 proven. 8673 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2020-08-22 23:14:45,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401241713] [2020-08-22 23:14:45,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:14:45,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2020-08-22 23:14:45,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349876350] [2020-08-22 23:14:45,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2020-08-22 23:14:45,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:14:45,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2020-08-22 23:14:45,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3724, Invalid=11282, Unknown=0, NotChecked=0, Total=15006 [2020-08-22 23:14:45,166 INFO L87 Difference]: Start difference. First operand 545 states and 545 transitions. Second operand 123 states. [2020-08-22 23:15:14,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:15:14,169 INFO L93 Difference]: Finished difference Result 558 states and 558 transitions. [2020-08-22 23:15:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2020-08-22 23:15:14,173 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 542 [2020-08-22 23:15:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:15:14,176 INFO L225 Difference]: With dead ends: 558 [2020-08-22 23:15:14,177 INFO L226 Difference]: Without dead ends: 556 [2020-08-22 23:15:14,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10677 ImplicationChecksByTransitivity, 41.2s TimeCoverageRelationStatistics Valid=18006, Invalid=40316, Unknown=0, NotChecked=0, Total=58322 [2020-08-22 23:15:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-08-22 23:15:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 554. [2020-08-22 23:15:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-08-22 23:15:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 554 transitions. [2020-08-22 23:15:14,194 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 554 transitions. Word has length 542 [2020-08-22 23:15:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:15:14,195 INFO L479 AbstractCegarLoop]: Abstraction has 554 states and 554 transitions. [2020-08-22 23:15:14,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 123 states. [2020-08-22 23:15:14,195 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 554 transitions. [2020-08-22 23:15:14,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-08-22 23:15:14,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:15:14,199 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:15:14,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-08-22 23:15:14,200 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:15:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:15:14,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1804962542, now seen corresponding path program 60 times [2020-08-22 23:15:14,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:15:14,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312852898] [2020-08-22 23:15:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:15:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:15:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:15:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:15:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:15:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:15:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:15:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:15:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:15:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:15:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:15:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:15:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:15:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:15:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:15:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:15:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:15:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:15:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:15:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:15:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:15:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:15:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:15:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:15:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:15:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:15:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:15:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:15:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:15:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:15:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:15:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:15:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:15:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:15:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:15:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:15:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:15:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:15:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:15:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:15:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:15:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:15:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:15:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:15:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:15:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:15:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:15:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:15:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:15:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:15:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:15:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:15:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:15:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:15:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:15:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-08-22 23:15:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 23:15:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-22 23:15:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-08-22 23:15:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-08-22 23:15:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-08-22 23:15:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:31,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-08-22 23:15:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:15:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16170 backedges. 120 proven. 8970 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2020-08-22 23:15:32,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312852898] [2020-08-22 23:15:32,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:15:32,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2020-08-22 23:15:32,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609944532] [2020-08-22 23:15:32,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2020-08-22 23:15:32,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:15:32,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2020-08-22 23:15:32,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3847, Invalid=11653, Unknown=0, NotChecked=0, Total=15500 [2020-08-22 23:15:32,191 INFO L87 Difference]: Start difference. First operand 554 states and 554 transitions. Second operand 125 states. [2020-08-22 23:16:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:16:02,108 INFO L93 Difference]: Finished difference Result 567 states and 567 transitions. [2020-08-22 23:16:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2020-08-22 23:16:02,112 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 551 [2020-08-22 23:16:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:16:02,115 INFO L225 Difference]: With dead ends: 567 [2020-08-22 23:16:02,115 INFO L226 Difference]: Without dead ends: 565 [2020-08-22 23:16:02,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11038 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=18611, Invalid=41659, Unknown=0, NotChecked=0, Total=60270 [2020-08-22 23:16:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-08-22 23:16:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2020-08-22 23:16:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-22 23:16:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 563 transitions. [2020-08-22 23:16:02,129 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 563 transitions. Word has length 551 [2020-08-22 23:16:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:16:02,130 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 563 transitions. [2020-08-22 23:16:02,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 125 states. [2020-08-22 23:16:02,130 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 563 transitions. [2020-08-22 23:16:02,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-08-22 23:16:02,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:16:02,133 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:16:02,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-08-22 23:16:02,133 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:16:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:16:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1131522094, now seen corresponding path program 61 times [2020-08-22 23:16:02,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:16:02,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519827421] [2020-08-22 23:16:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:16:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:16:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:16:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:16:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:16:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:16:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:16:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:16:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:16:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:16:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:16:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:16:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:16:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:16:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:16:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:16:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:16:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:16:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:16:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:16:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:16:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:16:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:16:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:16:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:16:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:16:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:16:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:16:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:16:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:16:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:16:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:16:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:16:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:16:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:16:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:16:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:16:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:16:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:16:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:16:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:16:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:16:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:16:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:16:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:16:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:16:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:16:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:16:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:16:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:16:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:16:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:16:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:16:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:16:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:16:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-08-22 23:16:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 23:16:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-22 23:16:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-08-22 23:16:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-08-22 23:16:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-08-22 23:16:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-08-22 23:16:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-22 23:16:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:16:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 16714 backedges. 122 proven. 9272 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2020-08-22 23:16:21,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519827421] [2020-08-22 23:16:21,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:16:21,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2020-08-22 23:16:21,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999429286] [2020-08-22 23:16:21,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2020-08-22 23:16:21,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:16:21,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2020-08-22 23:16:21,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3972, Invalid=12030, Unknown=0, NotChecked=0, Total=16002 [2020-08-22 23:16:21,418 INFO L87 Difference]: Start difference. First operand 563 states and 563 transitions. Second operand 127 states. [2020-08-22 23:16:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:16:55,086 INFO L93 Difference]: Finished difference Result 576 states and 576 transitions. [2020-08-22 23:16:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2020-08-22 23:16:55,090 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 560 [2020-08-22 23:16:55,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:16:55,094 INFO L225 Difference]: With dead ends: 576 [2020-08-22 23:16:55,094 INFO L226 Difference]: Without dead ends: 574 [2020-08-22 23:16:55,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11405 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=19226, Invalid=43024, Unknown=0, NotChecked=0, Total=62250 [2020-08-22 23:16:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-08-22 23:16:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2020-08-22 23:16:55,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-08-22 23:16:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 572 transitions. [2020-08-22 23:16:55,108 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 572 transitions. Word has length 560 [2020-08-22 23:16:55,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:16:55,109 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 572 transitions. [2020-08-22 23:16:55,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 127 states. [2020-08-22 23:16:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 572 transitions. [2020-08-22 23:16:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2020-08-22 23:16:55,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:16:55,112 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:16:55,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-08-22 23:16:55,112 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:16:55,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:16:55,113 INFO L82 PathProgramCache]: Analyzing trace with hash -438553454, now seen corresponding path program 62 times [2020-08-22 23:16:55,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:16:55,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227451037] [2020-08-22 23:16:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:16:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:17:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:17:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:17:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:17:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:17:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:17:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:17:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:17:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:17:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:17:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:17:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:17:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:17:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:17:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:17:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:17:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:17:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:17:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:17:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:17:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:17:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:17:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:17:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:17:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:17:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:17:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:17:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:17:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:17:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:17:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:17:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:17:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:17:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:17:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:17:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:17:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:17:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:17:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:17:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:17:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:17:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:17:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:17:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:17:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:17:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:17:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:17:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:17:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:17:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:17:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:17:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:17:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:17:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:17:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-08-22 23:17:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 23:17:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-22 23:17:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-08-22 23:17:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-08-22 23:17:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-08-22 23:17:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-08-22 23:17:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-22 23:17:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:15,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2020-08-22 23:17:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:17:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 17267 backedges. 124 proven. 9579 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2020-08-22 23:17:16,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227451037] [2020-08-22 23:17:16,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:17:16,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2020-08-22 23:17:16,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176898531] [2020-08-22 23:17:16,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2020-08-22 23:17:16,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:17:16,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2020-08-22 23:17:16,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=12413, Unknown=0, NotChecked=0, Total=16512 [2020-08-22 23:17:16,004 INFO L87 Difference]: Start difference. First operand 572 states and 572 transitions. Second operand 129 states. [2020-08-22 23:17:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:17:55,043 INFO L93 Difference]: Finished difference Result 585 states and 585 transitions. [2020-08-22 23:17:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2020-08-22 23:17:55,047 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 569 [2020-08-22 23:17:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:17:55,051 INFO L225 Difference]: With dead ends: 585 [2020-08-22 23:17:55,051 INFO L226 Difference]: Without dead ends: 583 [2020-08-22 23:17:55,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11778 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=19851, Invalid=44411, Unknown=0, NotChecked=0, Total=64262 [2020-08-22 23:17:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-08-22 23:17:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2020-08-22 23:17:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-08-22 23:17:55,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 581 transitions. [2020-08-22 23:17:55,068 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 581 transitions. Word has length 569 [2020-08-22 23:17:55,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:17:55,068 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 581 transitions. [2020-08-22 23:17:55,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 129 states. [2020-08-22 23:17:55,068 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 581 transitions. [2020-08-22 23:17:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-08-22 23:17:55,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:17:55,073 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:17:55,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-08-22 23:17:55,074 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:17:55,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:17:55,074 INFO L82 PathProgramCache]: Analyzing trace with hash -247506770, now seen corresponding path program 63 times [2020-08-22 23:17:55,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:17:55,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904405374] [2020-08-22 23:17:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:17:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:18:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 23:18:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 23:18:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 23:18:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:18:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 23:18:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 23:18:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:18:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 23:18:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 23:18:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 23:18:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 23:18:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 23:18:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 23:18:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 23:18:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 23:18:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 23:18:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 23:18:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 23:18:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 23:18:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 23:18:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 23:18:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 23:18:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 23:18:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-22 23:18:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 23:18:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 23:18:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 23:18:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-22 23:18:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 23:18:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 23:18:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 23:18:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-22 23:18:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 23:18:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-22 23:18:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 23:18:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-22 23:18:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 23:18:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-08-22 23:18:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 23:18:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-08-22 23:18:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 23:18:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-08-22 23:18:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 23:18:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-08-22 23:18:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 23:18:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-22 23:18:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 23:18:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-08-22 23:18:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 23:18:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 23:18:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 23:18:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-08-22 23:18:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 23:18:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-08-22 23:18:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 23:18:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-22 23:18:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-08-22 23:18:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-08-22 23:18:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-08-22 23:18:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-08-22 23:18:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-22 23:18:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2020-08-22 23:18:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-08-22 23:18:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:18:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 17829 backedges. 126 proven. 9891 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2020-08-22 23:18:18,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904405374] [2020-08-22 23:18:18,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:18:18,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2020-08-22 23:18:18,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618934484] [2020-08-22 23:18:18,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2020-08-22 23:18:18,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:18:18,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2020-08-22 23:18:18,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4228, Invalid=12802, Unknown=0, NotChecked=0, Total=17030 [2020-08-22 23:18:18,389 INFO L87 Difference]: Start difference. First operand 581 states and 581 transitions. Second operand 131 states.