/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/recursive-simple/id_i25_o25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:10:32,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:10:32,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:10:32,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 22:10:32,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:10:32,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:10:32,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:10:32,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:10:32,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:10:32,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:10:32,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:10:32,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:10:32,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:10:32,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:10:32,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:10:32,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:10:32,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:10:32,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:10:32,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:10:32,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:10:32,619 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 22:10:32,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:10:32,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:10:32,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:10:32,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:10:32,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:10:32,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:10:32,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:10:32,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:10:32,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:10:32,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:10:32,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:10:32,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:10:32,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:10:32,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:10:32,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:10:32,634 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:10:32,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:10:32,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:10:32,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:10:32,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:10:32,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:10:32,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:10:32,636 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 22:10:32,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:10:32,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:10:32,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:10:32,981 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:10:32,981 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:10:32,982 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2020-08-22 22:10:33,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d853959e8/3f60fd21523140a1a5b7d4c932547e02/FLAG0a16ae5d8 [2020-08-22 22:10:33,460 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:10:33,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2020-08-22 22:10:33,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d853959e8/3f60fd21523140a1a5b7d4c932547e02/FLAG0a16ae5d8 [2020-08-22 22:10:33,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d853959e8/3f60fd21523140a1a5b7d4c932547e02 [2020-08-22 22:10:33,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:10:33,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:10:33,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:10:33,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:10:33,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:10:33,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:10:33" (1/1) ... [2020-08-22 22:10:33,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2f7fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:33, skipping insertion in model container [2020-08-22 22:10:33,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:10:33" (1/1) ... [2020-08-22 22:10:33,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:10:33,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:10:34,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:10:34,060 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:10:34,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:10:34,087 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:10:34,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:34 WrapperNode [2020-08-22 22:10:34,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:10:34,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:10:34,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:10:34,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:10:34,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:34" (1/1) ... [2020-08-22 22:10:34,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:34" (1/1) ... [2020-08-22 22:10:34,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:34" (1/1) ... [2020-08-22 22:10:34,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:34" (1/1) ... [2020-08-22 22:10:34,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:34" (1/1) ... [2020-08-22 22:10:34,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:34" (1/1) ... [2020-08-22 22:10:34,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:34" (1/1) ... [2020-08-22 22:10:34,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:10:34,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:10:34,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:10:34,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:10:34,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:34" (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 22:10:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:10:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:10:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-22 22:10:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:10:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:10:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:10:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-22 22:10:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:10:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:10:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:10:34,446 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:10:34,447 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 22:10:34,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:10:34 BoogieIcfgContainer [2020-08-22 22:10:34,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:10:34,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:10:34,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:10:34,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:10:34,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:10:33" (1/3) ... [2020-08-22 22:10:34,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10833c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:10:34, skipping insertion in model container [2020-08-22 22:10:34,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:10:34" (2/3) ... [2020-08-22 22:10:34,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10833c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:10:34, skipping insertion in model container [2020-08-22 22:10:34,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:10:34" (3/3) ... [2020-08-22 22:10:34,459 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i25_o25-1.c [2020-08-22 22:10:34,468 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:10:34,475 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:10:34,487 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:10:34,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:10:34,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:10:34,508 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:10:34,508 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:10:34,508 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:10:34,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:10:34,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:10:34,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:10:34,522 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-08-22 22:10:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 22:10:34,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:34,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:34,535 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:34,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-08-22 22:10:34,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:34,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153515597] [2020-08-22 22:10:34,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:34,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:34,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:34,749 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 22:10:34,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153515597] [2020-08-22 22:10:34,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:10:34,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:10:34,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440591814] [2020-08-22 22:10:34,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:10:34,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:34,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:10:34,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:10:34,781 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-08-22 22:10:34,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:34,877 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-08-22 22:10:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 22:10:34,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 22:10:34,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:34,894 INFO L225 Difference]: With dead ends: 37 [2020-08-22 22:10:34,894 INFO L226 Difference]: Without dead ends: 23 [2020-08-22 22:10:34,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 22:10:34,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-22 22:10:34,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-22 22:10:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-22 22:10:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-08-22 22:10:35,010 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-08-22 22:10:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:35,013 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-08-22 22:10:35,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:10:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-08-22 22:10:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 22:10:35,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:35,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:35,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:10:35,017 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:35,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-08-22 22:10:35,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:35,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620705271] [2020-08-22 22:10:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:10:35,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620705271] [2020-08-22 22:10:35,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:35,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 22:10:35,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518540630] [2020-08-22 22:10:35,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:10:35,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:35,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:10:35,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:10:35,168 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2020-08-22 22:10:35,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:35,236 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-08-22 22:10:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:10:35,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-08-22 22:10:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:35,238 INFO L225 Difference]: With dead ends: 34 [2020-08-22 22:10:35,238 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 22:10:35,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:10:35,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 22:10:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-22 22:10:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 22:10:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-08-22 22:10:35,256 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-08-22 22:10:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:35,256 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-08-22 22:10:35,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:10:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-08-22 22:10:35,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 22:10:35,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:35,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:35,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:10:35,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-08-22 22:10:35,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:35,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5957161] [2020-08-22 22:10:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 22:10:35,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5957161] [2020-08-22 22:10:35,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:35,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:10:35,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580688560] [2020-08-22 22:10:35,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:10:35,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:35,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:10:35,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:10:35,454 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-08-22 22:10:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:35,582 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-08-22 22:10:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:10:35,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-08-22 22:10:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:35,588 INFO L225 Difference]: With dead ends: 39 [2020-08-22 22:10:35,589 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 22:10:35,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:10:35,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 22:10:35,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-22 22:10:35,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-22 22:10:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-08-22 22:10:35,616 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-08-22 22:10:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:35,617 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-08-22 22:10:35,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:10:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-08-22 22:10:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 22:10:35,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:35,620 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:35,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:10:35,620 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:35,621 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-08-22 22:10:35,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:35,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658219965] [2020-08-22 22:10:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 22:10:35,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658219965] [2020-08-22 22:10:35,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:35,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:10:35,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082237377] [2020-08-22 22:10:35,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:10:35,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:35,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:10:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:10:35,792 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2020-08-22 22:10:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:35,891 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-08-22 22:10:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 22:10:35,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-22 22:10:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:35,893 INFO L225 Difference]: With dead ends: 44 [2020-08-22 22:10:35,893 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 22:10:35,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:10:35,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 22:10:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-22 22:10:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 22:10:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-08-22 22:10:35,905 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-08-22 22:10:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:35,906 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-08-22 22:10:35,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:10:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-08-22 22:10:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 22:10:35,908 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:35,908 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:35,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:10:35,909 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:35,909 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-08-22 22:10:35,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:35,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760028283] [2020-08-22 22:10:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-22 22:10:36,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760028283] [2020-08-22 22:10:36,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:36,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:10:36,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148458543] [2020-08-22 22:10:36,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:10:36,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:36,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:10:36,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:10:36,136 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2020-08-22 22:10:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:36,225 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-08-22 22:10:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 22:10:36,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-08-22 22:10:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:36,227 INFO L225 Difference]: With dead ends: 49 [2020-08-22 22:10:36,227 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 22:10:36,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:10:36,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 22:10:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 22:10:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 22:10:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-08-22 22:10:36,239 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-08-22 22:10:36,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:36,240 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-08-22 22:10:36,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:10:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-08-22 22:10:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 22:10:36,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:36,242 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:36,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:10:36,243 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:36,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:36,243 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-08-22 22:10:36,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:36,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881245078] [2020-08-22 22:10:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 22:10:36,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881245078] [2020-08-22 22:10:36,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:36,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:10:36,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928207366] [2020-08-22 22:10:36,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:10:36,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:36,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:10:36,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:10:36,507 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 10 states. [2020-08-22 22:10:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:36,615 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-08-22 22:10:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:10:36,616 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-08-22 22:10:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:36,617 INFO L225 Difference]: With dead ends: 54 [2020-08-22 22:10:36,617 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 22:10:36,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:10:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 22:10:36,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-08-22 22:10:36,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 22:10:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-08-22 22:10:36,628 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-08-22 22:10:36,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:36,629 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-08-22 22:10:36,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:10:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-08-22 22:10:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 22:10:36,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:36,631 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:36,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:10:36,632 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:36,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:36,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-08-22 22:10:36,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:36,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647055276] [2020-08-22 22:10:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-22 22:10:36,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647055276] [2020-08-22 22:10:36,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:36,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:10:36,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060414757] [2020-08-22 22:10:36,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:10:36,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:36,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:10:36,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:10:36,894 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 11 states. [2020-08-22 22:10:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:37,010 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-08-22 22:10:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:10:37,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-08-22 22:10:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:37,013 INFO L225 Difference]: With dead ends: 59 [2020-08-22 22:10:37,013 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 22:10:37,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-22 22:10:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 22:10:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-08-22 22:10:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-08-22 22:10:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-08-22 22:10:37,024 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-08-22 22:10:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:37,025 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-08-22 22:10:37,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:10:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-08-22 22:10:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 22:10:37,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:37,027 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:37,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:10:37,027 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:37,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:37,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-08-22 22:10:37,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:37,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302252569] [2020-08-22 22:10:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-08-22 22:10:37,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302252569] [2020-08-22 22:10:37,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:37,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 22:10:37,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693344031] [2020-08-22 22:10:37,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 22:10:37,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:37,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 22:10:37,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:10:37,290 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 12 states. [2020-08-22 22:10:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:37,415 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-08-22 22:10:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:10:37,416 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-22 22:10:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:37,418 INFO L225 Difference]: With dead ends: 64 [2020-08-22 22:10:37,418 INFO L226 Difference]: Without dead ends: 58 [2020-08-22 22:10:37,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-22 22:10:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-22 22:10:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-22 22:10:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-22 22:10:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-08-22 22:10:37,429 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-08-22 22:10:37,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:37,430 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-08-22 22:10:37,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 22:10:37,430 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-08-22 22:10:37,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-22 22:10:37,432 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:37,432 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:37,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:10:37,432 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:37,433 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-08-22 22:10:37,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:37,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695632960] [2020-08-22 22:10:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-22 22:10:37,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695632960] [2020-08-22 22:10:37,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:37,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 22:10:37,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340579772] [2020-08-22 22:10:37,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 22:10:37,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:37,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 22:10:37,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:10:37,755 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 13 states. [2020-08-22 22:10:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:37,908 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-08-22 22:10:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 22:10:37,909 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2020-08-22 22:10:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:37,911 INFO L225 Difference]: With dead ends: 69 [2020-08-22 22:10:37,911 INFO L226 Difference]: Without dead ends: 63 [2020-08-22 22:10:37,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-22 22:10:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-22 22:10:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-08-22 22:10:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-22 22:10:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-08-22 22:10:37,923 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-08-22 22:10:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:37,924 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-08-22 22:10:37,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 22:10:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-08-22 22:10:37,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 22:10:37,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:37,925 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:37,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:10:37,926 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:37,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:37,926 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-08-22 22:10:37,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:37,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720441825] [2020-08-22 22:10:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:37,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-08-22 22:10:38,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720441825] [2020-08-22 22:10:38,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:38,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 22:10:38,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257820967] [2020-08-22 22:10:38,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:10:38,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:38,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:10:38,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:10:38,300 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 14 states. [2020-08-22 22:10:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:38,472 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-08-22 22:10:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 22:10:38,475 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2020-08-22 22:10:38,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:38,477 INFO L225 Difference]: With dead ends: 74 [2020-08-22 22:10:38,477 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 22:10:38,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-08-22 22:10:38,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 22:10:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 22:10:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 22:10:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-08-22 22:10:38,494 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-08-22 22:10:38,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:38,494 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-08-22 22:10:38,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:10:38,495 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-08-22 22:10:38,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-22 22:10:38,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:38,496 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:38,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:10:38,497 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:38,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:38,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-08-22 22:10:38,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:38,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598619054] [2020-08-22 22:10:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-22 22:10:38,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598619054] [2020-08-22 22:10:38,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:38,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 22:10:38,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558031543] [2020-08-22 22:10:38,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 22:10:38,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:38,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 22:10:38,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:10:38,925 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 15 states. [2020-08-22 22:10:39,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:39,091 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-08-22 22:10:39,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 22:10:39,092 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2020-08-22 22:10:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:39,093 INFO L225 Difference]: With dead ends: 79 [2020-08-22 22:10:39,094 INFO L226 Difference]: Without dead ends: 73 [2020-08-22 22:10:39,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-08-22 22:10:39,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-08-22 22:10:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-08-22 22:10:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-08-22 22:10:39,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-08-22 22:10:39,108 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-08-22 22:10:39,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:39,109 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-08-22 22:10:39,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 22:10:39,109 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-08-22 22:10:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-22 22:10:39,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:39,111 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:39,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:10:39,111 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:39,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:39,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-08-22 22:10:39,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:39,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200365575] [2020-08-22 22:10:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-08-22 22:10:39,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200365575] [2020-08-22 22:10:39,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:39,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 22:10:39,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807827108] [2020-08-22 22:10:39,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 22:10:39,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:39,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 22:10:39,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:10:39,596 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 16 states. [2020-08-22 22:10:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:39,783 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-08-22 22:10:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 22:10:39,784 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-22 22:10:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:39,786 INFO L225 Difference]: With dead ends: 84 [2020-08-22 22:10:39,786 INFO L226 Difference]: Without dead ends: 78 [2020-08-22 22:10:39,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-08-22 22:10:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-22 22:10:39,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-22 22:10:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 22:10:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-08-22 22:10:39,797 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-08-22 22:10:39,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:39,797 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-08-22 22:10:39,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 22:10:39,798 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-08-22 22:10:39,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 22:10:39,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:39,799 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:39,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 22:10:39,800 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:39,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:39,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-08-22 22:10:39,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:39,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254443281] [2020-08-22 22:10:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:39,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-08-22 22:10:40,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254443281] [2020-08-22 22:10:40,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:40,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 22:10:40,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949422958] [2020-08-22 22:10:40,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 22:10:40,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:40,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 22:10:40,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:10:40,269 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 17 states. [2020-08-22 22:10:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:40,484 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2020-08-22 22:10:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 22:10:40,485 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-08-22 22:10:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:40,487 INFO L225 Difference]: With dead ends: 89 [2020-08-22 22:10:40,487 INFO L226 Difference]: Without dead ends: 83 [2020-08-22 22:10:40,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-08-22 22:10:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-22 22:10:40,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-22 22:10:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-22 22:10:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-08-22 22:10:40,498 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 112 [2020-08-22 22:10:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:40,499 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-08-22 22:10:40,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 22:10:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-08-22 22:10:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-22 22:10:40,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:40,501 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:40,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 22:10:40,501 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:40,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:40,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1612559463, now seen corresponding path program 13 times [2020-08-22 22:10:40,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:40,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951971382] [2020-08-22 22:10:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:40,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-08-22 22:10:41,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951971382] [2020-08-22 22:10:41,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:41,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 22:10:41,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726665285] [2020-08-22 22:10:41,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 22:10:41,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:41,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 22:10:41,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-08-22 22:10:41,136 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 18 states. [2020-08-22 22:10:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:41,333 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2020-08-22 22:10:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 22:10:41,333 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 120 [2020-08-22 22:10:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:41,335 INFO L225 Difference]: With dead ends: 94 [2020-08-22 22:10:41,335 INFO L226 Difference]: Without dead ends: 88 [2020-08-22 22:10:41,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-08-22 22:10:41,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-22 22:10:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-08-22 22:10:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-22 22:10:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-08-22 22:10:41,346 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 120 [2020-08-22 22:10:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:41,347 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-08-22 22:10:41,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 22:10:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-08-22 22:10:41,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 22:10:41,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:41,349 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:41,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 22:10:41,349 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:41,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:41,351 INFO L82 PathProgramCache]: Analyzing trace with hash 996432753, now seen corresponding path program 14 times [2020-08-22 22:10:41,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:41,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013270924] [2020-08-22 22:10:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:41,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-08-22 22:10:42,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013270924] [2020-08-22 22:10:42,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:42,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 22:10:42,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112968967] [2020-08-22 22:10:42,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 22:10:42,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:42,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 22:10:42,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-08-22 22:10:42,074 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 19 states. [2020-08-22 22:10:42,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:42,324 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2020-08-22 22:10:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 22:10:42,325 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 128 [2020-08-22 22:10:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:42,326 INFO L225 Difference]: With dead ends: 99 [2020-08-22 22:10:42,326 INFO L226 Difference]: Without dead ends: 93 [2020-08-22 22:10:42,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 22:10:42,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-22 22:10:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-08-22 22:10:42,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-22 22:10:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-08-22 22:10:42,336 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 128 [2020-08-22 22:10:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:42,337 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-08-22 22:10:42,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 22:10:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-08-22 22:10:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 22:10:42,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:42,339 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:42,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 22:10:42,340 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:42,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:42,340 INFO L82 PathProgramCache]: Analyzing trace with hash 418248103, now seen corresponding path program 15 times [2020-08-22 22:10:42,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:42,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983458189] [2020-08-22 22:10:42,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:42,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-08-22 22:10:43,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983458189] [2020-08-22 22:10:43,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:43,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-22 22:10:43,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88022479] [2020-08-22 22:10:43,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 22:10:43,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:43,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 22:10:43,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-08-22 22:10:43,142 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 20 states. [2020-08-22 22:10:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:43,377 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2020-08-22 22:10:43,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 22:10:43,378 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 136 [2020-08-22 22:10:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:43,379 INFO L225 Difference]: With dead ends: 104 [2020-08-22 22:10:43,379 INFO L226 Difference]: Without dead ends: 98 [2020-08-22 22:10:43,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=461, Invalid=799, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 22:10:43,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-22 22:10:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-08-22 22:10:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 22:10:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-08-22 22:10:43,390 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 136 [2020-08-22 22:10:43,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:43,391 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-08-22 22:10:43,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 22:10:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-08-22 22:10:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-22 22:10:43,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:43,394 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:43,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 22:10:43,395 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:43,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:43,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2106505265, now seen corresponding path program 16 times [2020-08-22 22:10:43,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:43,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50942500] [2020-08-22 22:10:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:43,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-08-22 22:10:44,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50942500] [2020-08-22 22:10:44,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:44,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-22 22:10:44,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396860497] [2020-08-22 22:10:44,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 22:10:44,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:44,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 22:10:44,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:10:44,208 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 21 states. [2020-08-22 22:10:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:44,474 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2020-08-22 22:10:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 22:10:44,477 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 144 [2020-08-22 22:10:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:44,479 INFO L225 Difference]: With dead ends: 109 [2020-08-22 22:10:44,479 INFO L226 Difference]: Without dead ends: 103 [2020-08-22 22:10:44,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 22:10:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-08-22 22:10:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-08-22 22:10:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-22 22:10:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-08-22 22:10:44,495 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 144 [2020-08-22 22:10:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:44,497 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-08-22 22:10:44,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 22:10:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-08-22 22:10:44,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 22:10:44,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:44,500 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:44,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 22:10:44,500 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:44,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1225615079, now seen corresponding path program 17 times [2020-08-22 22:10:44,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:44,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945821865] [2020-08-22 22:10:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:44,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-08-22 22:10:45,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945821865] [2020-08-22 22:10:45,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:45,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 22:10:45,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261144255] [2020-08-22 22:10:45,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 22:10:45,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:45,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 22:10:45,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-08-22 22:10:45,519 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 22 states. [2020-08-22 22:10:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:45,823 INFO L93 Difference]: Finished difference Result 114 states and 115 transitions. [2020-08-22 22:10:45,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 22:10:45,824 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 152 [2020-08-22 22:10:45,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:45,825 INFO L225 Difference]: With dead ends: 114 [2020-08-22 22:10:45,825 INFO L226 Difference]: Without dead ends: 108 [2020-08-22 22:10:45,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 22:10:45,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-08-22 22:10:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-08-22 22:10:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-22 22:10:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2020-08-22 22:10:45,840 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 152 [2020-08-22 22:10:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:45,840 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2020-08-22 22:10:45,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 22:10:45,841 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2020-08-22 22:10:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-22 22:10:45,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:45,843 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:45,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 22:10:45,843 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:45,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:45,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2080643855, now seen corresponding path program 18 times [2020-08-22 22:10:45,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:45,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730586499] [2020-08-22 22:10:45,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:45,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-08-22 22:10:46,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730586499] [2020-08-22 22:10:46,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:46,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-22 22:10:46,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630848758] [2020-08-22 22:10:46,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 22:10:46,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:46,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 22:10:46,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-08-22 22:10:46,982 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 23 states. [2020-08-22 22:10:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:47,373 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2020-08-22 22:10:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 22:10:47,374 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 160 [2020-08-22 22:10:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:47,377 INFO L225 Difference]: With dead ends: 119 [2020-08-22 22:10:47,377 INFO L226 Difference]: Without dead ends: 113 [2020-08-22 22:10:47,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 22:10:47,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-22 22:10:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-08-22 22:10:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-22 22:10:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2020-08-22 22:10:47,391 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 160 [2020-08-22 22:10:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:47,392 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2020-08-22 22:10:47,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 22:10:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2020-08-22 22:10:47,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-22 22:10:47,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:47,394 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:47,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 22:10:47,395 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:47,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:47,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1136658471, now seen corresponding path program 19 times [2020-08-22 22:10:47,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:47,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993543295] [2020-08-22 22:10:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:47,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-08-22 22:10:48,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993543295] [2020-08-22 22:10:48,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:48,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-22 22:10:48,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713598244] [2020-08-22 22:10:48,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 22:10:48,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:48,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 22:10:48,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-08-22 22:10:48,519 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 24 states. [2020-08-22 22:10:48,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:48,845 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2020-08-22 22:10:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 22:10:48,846 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 168 [2020-08-22 22:10:48,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:48,847 INFO L225 Difference]: With dead ends: 124 [2020-08-22 22:10:48,847 INFO L226 Difference]: Without dead ends: 118 [2020-08-22 22:10:48,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 22:10:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-08-22 22:10:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-08-22 22:10:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 22:10:48,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-08-22 22:10:48,859 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 168 [2020-08-22 22:10:48,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:48,860 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-08-22 22:10:48,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 22:10:48,860 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-08-22 22:10:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 22:10:48,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:48,863 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:48,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 22:10:48,863 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:48,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1108876879, now seen corresponding path program 20 times [2020-08-22 22:10:48,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:48,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544214581] [2020-08-22 22:10:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-08-22 22:10:49,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544214581] [2020-08-22 22:10:49,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:49,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-22 22:10:49,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889353912] [2020-08-22 22:10:49,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-22 22:10:49,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:49,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-22 22:10:49,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-08-22 22:10:49,855 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 25 states. [2020-08-22 22:10:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:50,166 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2020-08-22 22:10:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 22:10:50,166 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 176 [2020-08-22 22:10:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:50,168 INFO L225 Difference]: With dead ends: 129 [2020-08-22 22:10:50,168 INFO L226 Difference]: Without dead ends: 123 [2020-08-22 22:10:50,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 22:10:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-22 22:10:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-08-22 22:10:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 22:10:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2020-08-22 22:10:50,179 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 176 [2020-08-22 22:10:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:50,180 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2020-08-22 22:10:50,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-22 22:10:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2020-08-22 22:10:50,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-08-22 22:10:50,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:50,183 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:50,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 22:10:50,183 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:50,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:50,184 INFO L82 PathProgramCache]: Analyzing trace with hash 390715751, now seen corresponding path program 21 times [2020-08-22 22:10:50,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:50,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142384167] [2020-08-22 22:10:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:51,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-08-22 22:10:51,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142384167] [2020-08-22 22:10:51,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:51,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-22 22:10:51,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094151410] [2020-08-22 22:10:51,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-22 22:10:51,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:51,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-22 22:10:51,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-08-22 22:10:51,324 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 26 states. [2020-08-22 22:10:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:51,692 INFO L93 Difference]: Finished difference Result 134 states and 135 transitions. [2020-08-22 22:10:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 22:10:51,695 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 184 [2020-08-22 22:10:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:51,696 INFO L225 Difference]: With dead ends: 134 [2020-08-22 22:10:51,697 INFO L226 Difference]: Without dead ends: 128 [2020-08-22 22:10:51,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=830, Invalid=1426, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 22:10:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-08-22 22:10:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-08-22 22:10:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-22 22:10:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2020-08-22 22:10:51,709 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 184 [2020-08-22 22:10:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:51,709 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2020-08-22 22:10:51,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-22 22:10:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2020-08-22 22:10:51,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-22 22:10:51,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:51,713 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:51,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 22:10:51,713 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:51,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1081168271, now seen corresponding path program 22 times [2020-08-22 22:10:51,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:51,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629745866] [2020-08-22 22:10:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:51,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:51,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:51,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:51,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-08-22 22:10:53,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629745866] [2020-08-22 22:10:53,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:53,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-08-22 22:10:53,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803361177] [2020-08-22 22:10:53,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-22 22:10:53,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:53,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-22 22:10:53,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-08-22 22:10:53,177 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 27 states. [2020-08-22 22:10:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:53,570 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2020-08-22 22:10:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 22:10:53,571 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 192 [2020-08-22 22:10:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:53,573 INFO L225 Difference]: With dead ends: 139 [2020-08-22 22:10:53,573 INFO L226 Difference]: Without dead ends: 133 [2020-08-22 22:10:53,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 22:10:53,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-22 22:10:53,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-08-22 22:10:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 22:10:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2020-08-22 22:10:53,584 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 192 [2020-08-22 22:10:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:53,585 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2020-08-22 22:10:53,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-22 22:10:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2020-08-22 22:10:53,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 22:10:53,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:53,587 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:53,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 22:10:53,588 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:53,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:53,588 INFO L82 PathProgramCache]: Analyzing trace with hash -856761689, now seen corresponding path program 23 times [2020-08-22 22:10:53,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:53,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006504536] [2020-08-22 22:10:53,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:53,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:53,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:53,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:53,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:53,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:53,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:53,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-08-22 22:10:54,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006504536] [2020-08-22 22:10:54,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:54,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 22:10:54,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839622191] [2020-08-22 22:10:54,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 22:10:54,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:54,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 22:10:54,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-08-22 22:10:54,946 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 28 states. [2020-08-22 22:10:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:55,355 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2020-08-22 22:10:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 22:10:55,356 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 200 [2020-08-22 22:10:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:55,358 INFO L225 Difference]: With dead ends: 144 [2020-08-22 22:10:55,358 INFO L226 Difference]: Without dead ends: 138 [2020-08-22 22:10:55,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 22:10:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-22 22:10:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-08-22 22:10:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 22:10:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2020-08-22 22:10:55,369 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 200 [2020-08-22 22:10:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:55,370 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2020-08-22 22:10:55,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 22:10:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2020-08-22 22:10:55,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-08-22 22:10:55,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:55,376 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:55,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 22:10:55,378 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:55,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:55,379 INFO L82 PathProgramCache]: Analyzing trace with hash 36457265, now seen corresponding path program 24 times [2020-08-22 22:10:55,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:55,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879541032] [2020-08-22 22:10:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-08-22 22:10:56,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879541032] [2020-08-22 22:10:56,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:10:56,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-22 22:10:56,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353688923] [2020-08-22 22:10:56,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 22:10:56,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:10:56,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 22:10:56,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-08-22 22:10:56,898 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 29 states. [2020-08-22 22:10:57,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:10:57,340 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2020-08-22 22:10:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 22:10:57,341 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 208 [2020-08-22 22:10:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:10:57,343 INFO L225 Difference]: With dead ends: 149 [2020-08-22 22:10:57,343 INFO L226 Difference]: Without dead ends: 143 [2020-08-22 22:10:57,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1055, Invalid=1807, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 22:10:57,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-22 22:10:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-08-22 22:10:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-22 22:10:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2020-08-22 22:10:57,358 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 208 [2020-08-22 22:10:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:10:57,358 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2020-08-22 22:10:57,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 22:10:57,359 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2020-08-22 22:10:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-08-22 22:10:57,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:10:57,376 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:10:57,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 22:10:57,376 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:10:57,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:10:57,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1460466713, now seen corresponding path program 25 times [2020-08-22 22:10:57,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:10:57,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346792280] [2020-08-22 22:10:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:10:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:10:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:57,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:10:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:57,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:57,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:57,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:58,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:58,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:58,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:58,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:58,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:59,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:59,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:59,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:59,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:59,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:59,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:10:59,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:10:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:00,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:00,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-08-22 22:11:00,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346792280] [2020-08-22 22:11:00,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:00,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-08-22 22:11:00,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508926221] [2020-08-22 22:11:00,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-08-22 22:11:00,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:00,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-08-22 22:11:00,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 22:11:00,849 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 55 states. [2020-08-22 22:11:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:04,518 INFO L93 Difference]: Finished difference Result 154 states and 155 transitions. [2020-08-22 22:11:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-08-22 22:11:04,521 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 216 [2020-08-22 22:11:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:04,523 INFO L225 Difference]: With dead ends: 154 [2020-08-22 22:11:04,523 INFO L226 Difference]: Without dead ends: 148 [2020-08-22 22:11:04,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=211, Invalid=6269, Unknown=0, NotChecked=0, Total=6480 [2020-08-22 22:11:04,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-22 22:11:04,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-08-22 22:11:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-22 22:11:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2020-08-22 22:11:04,539 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 216 [2020-08-22 22:11:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:04,540 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2020-08-22 22:11:04,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-08-22 22:11:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2020-08-22 22:11:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-08-22 22:11:04,542 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:11:04,542 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:11:04,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 22:11:04,543 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:11:04,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:11:04,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1543718927, now seen corresponding path program 26 times [2020-08-22 22:11:04,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:11:04,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824403652] [2020-08-22 22:11:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:11:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:04,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:11:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:04,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 22:11:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:04,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:04,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:04,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:04,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:05,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:11:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:11:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1625 proven. 52 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-08-22 22:11:06,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824403652] [2020-08-22 22:11:06,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:11:06,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-08-22 22:11:06,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685077427] [2020-08-22 22:11:06,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 22:11:06,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:11:06,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 22:11:06,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=546, Unknown=0, NotChecked=0, Total=930 [2020-08-22 22:11:06,262 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 31 states. [2020-08-22 22:11:08,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:11:08,754 INFO L93 Difference]: Finished difference Result 346 states and 1022 transitions. [2020-08-22 22:11:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-08-22 22:11:08,757 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 224 [2020-08-22 22:11:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:11:08,758 INFO L225 Difference]: With dead ends: 346 [2020-08-22 22:11:08,758 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 22:11:08,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1142, Invalid=2164, Unknown=0, NotChecked=0, Total=3306 [2020-08-22 22:11:08,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 22:11:08,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 22:11:08,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 22:11:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 22:11:08,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 224 [2020-08-22 22:11:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:11:08,780 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 22:11:08,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 22:11:08,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 22:11:08,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 22:11:08,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 22:11:08,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 22:11:11,690 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 284 DAG size of output: 208 [2020-08-22 22:11:12,831 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 238 DAG size of output: 163 [2020-08-22 22:11:12,963 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 3 [2020-08-22 22:11:14,125 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 238 DAG size of output: 163 [2020-08-22 22:11:14,241 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 3 [2020-08-22 22:11:15,125 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 157 [2020-08-22 22:11:16,022 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 157 [2020-08-22 22:11:16,029 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:11:16,029 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:11:16,030 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:11:16,030 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 22:11:16,030 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 22:11:16,030 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:11:16,030 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) the Hoare annotation is: false [2020-08-22 22:11:16,030 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 15) the Hoare annotation is: true [2020-08-22 22:11:16,031 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 9 15) the Hoare annotation is: (<= 25 main_~input~0) [2020-08-22 22:11:16,031 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: false [2020-08-22 22:11:16,031 INFO L264 CegarLoopResult]: At program point L12(lines 12 14) the Hoare annotation is: (and (<= 25 main_~input~0) (<= main_~result~0 25) (< 24 main_~result~0)) [2020-08-22 22:11:16,031 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= 25 main_~input~0) (<= main_~input~0 25)) [2020-08-22 22:11:16,031 INFO L264 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (and (<= 25 main_~input~0) (<= |main_#t~ret1| 25) (<= 25 |main_#t~ret1|)) [2020-08-22 22:11:16,031 INFO L264 CegarLoopResult]: At program point L12-2(lines 9 15) the Hoare annotation is: (<= 25 main_~input~0) [2020-08-22 22:11:16,031 INFO L264 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (and (<= 25 main_~input~0) (<= |main_#t~ret1| 25) (<= 25 |main_#t~ret1|)) [2020-08-22 22:11:16,032 INFO L264 CegarLoopResult]: At program point L11-3(line 11) the Hoare annotation is: (and (<= 25 main_~input~0) (<= main_~result~0 25) (< 24 main_~result~0) (<= |main_#t~ret1| 25) (<= 25 |main_#t~ret1|)) [2020-08-22 22:11:16,034 INFO L264 CegarLoopResult]: At program point idFINAL(lines 4 7) the Hoare annotation is: (let ((.cse16 (<= 12 |id_#in~x|)) (.cse0 (= |id_#in~x| id_~x))) (let ((.cse7 (and .cse0 (<= 26 |id_#in~x|))) (.cse1 (and (<= 15 |id_#res|) (<= 15 |id_#in~x|) .cse0 (<= |id_#in~x| 15) (<= |id_#res| 15))) (.cse2 (and (<= |id_#res| 16) .cse0 (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 16 |id_#res|))) (.cse8 (and (<= |id_#res| 23) .cse0 (<= 23 |id_#in~x|) (<= |id_#in~x| 23) (<= 23 |id_#res|))) (.cse9 (and (<= |id_#res| 17) (<= 17 |id_#res|) .cse0 (<= |id_#in~x| 17) (<= 17 |id_#in~x|))) (.cse3 (and .cse0 (<= 22 |id_#res|) (<= |id_#in~x| 22) (<= |id_#res| 22) (<= 22 |id_#in~x|))) (.cse10 (and (<= 25 |id_#in~x|) .cse0 (<= |id_#res| 25) (<= 25 |id_#res|))) (.cse4 (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) .cse0 (<= |id_#res| 13) (<= 13 |id_#res|))) (.cse11 (and .cse0 (<= |id_#in~x| 20) (<= 20 |id_#res|) (<= |id_#res| 20) (<= 20 |id_#in~x|))) (.cse12 (and (<= |id_#res| 14) (<= 14 |id_#in~x|) .cse0 (<= 14 |id_#res|) (<= |id_#in~x| 14))) (.cse13 (and .cse16 .cse0 (<= |id_#res| 12) (<= |id_#in~x| 12) (<= 12 |id_#res|))) (.cse5 (and .cse0 (<= |id_#in~x| 24) (<= |id_#res| 24) (<= 24 |id_#in~x|) (<= 24 |id_#res|))) (.cse6 (and (<= 19 |id_#res|) (<= |id_#res| 19) .cse0 (<= |id_#in~x| 19) (<= 19 |id_#in~x|))) (.cse14 (and (<= |id_#res| 18) (<= 18 |id_#in~x|) .cse0 (<= 18 |id_#res|) (<= |id_#in~x| 18))) (.cse15 (and (<= |id_#in~x| 21) (<= 21 |id_#in~x|) (<= 21 |id_#res|) .cse0 (<= |id_#res| 21)))) (and (or (and (<= 7 |id_#res|) .cse0 (<= |id_#res| 7) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) .cse1 .cse2 (and .cse0 (<= |id_#in~x| 10) (<= 10 |id_#in~x|) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= 2 |id_#res|) .cse0 (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= 9 |id_#res|) .cse0 (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 9 |id_#in~x|)) .cse3 .cse4 (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (<= |id_#res| 8) .cse0 (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) .cse5 (and (<= |id_#res| 6) .cse0 (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) .cse6 (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)) .cse7 (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= |id_#res| 5)) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (and (<= 11 |id_#in~x|) .cse0 (<= |id_#res| 11) (<= 11 |id_#res|)) (and .cse0 (= |id_#res| 0) (= |id_#in~x| 0)) .cse14 .cse15) (or .cse7 .cse1 .cse2 .cse8 (not .cse16) .cse9 .cse3 .cse10 .cse4 .cse11 .cse12 .cse13 .cse5 .cse6 .cse14 .cse15)))) [2020-08-22 22:11:16,034 INFO L264 CegarLoopResult]: At program point idEXIT(lines 4 7) the Hoare annotation is: (let ((.cse16 (<= 12 |id_#in~x|)) (.cse0 (= |id_#in~x| id_~x))) (let ((.cse7 (and .cse0 (<= 26 |id_#in~x|))) (.cse1 (and (<= 15 |id_#res|) (<= 15 |id_#in~x|) .cse0 (<= |id_#in~x| 15) (<= |id_#res| 15))) (.cse2 (and (<= |id_#res| 16) .cse0 (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 16 |id_#res|))) (.cse8 (and (<= |id_#res| 23) .cse0 (<= 23 |id_#in~x|) (<= |id_#in~x| 23) (<= 23 |id_#res|))) (.cse9 (and (<= |id_#res| 17) (<= 17 |id_#res|) .cse0 (<= |id_#in~x| 17) (<= 17 |id_#in~x|))) (.cse3 (and .cse0 (<= 22 |id_#res|) (<= |id_#in~x| 22) (<= |id_#res| 22) (<= 22 |id_#in~x|))) (.cse10 (and (<= 25 |id_#in~x|) .cse0 (<= |id_#res| 25) (<= 25 |id_#res|))) (.cse4 (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) .cse0 (<= |id_#res| 13) (<= 13 |id_#res|))) (.cse11 (and .cse0 (<= |id_#in~x| 20) (<= 20 |id_#res|) (<= |id_#res| 20) (<= 20 |id_#in~x|))) (.cse12 (and (<= |id_#res| 14) (<= 14 |id_#in~x|) .cse0 (<= 14 |id_#res|) (<= |id_#in~x| 14))) (.cse13 (and .cse16 .cse0 (<= |id_#res| 12) (<= |id_#in~x| 12) (<= 12 |id_#res|))) (.cse5 (and .cse0 (<= |id_#in~x| 24) (<= |id_#res| 24) (<= 24 |id_#in~x|) (<= 24 |id_#res|))) (.cse6 (and (<= 19 |id_#res|) (<= |id_#res| 19) .cse0 (<= |id_#in~x| 19) (<= 19 |id_#in~x|))) (.cse14 (and (<= |id_#res| 18) (<= 18 |id_#in~x|) .cse0 (<= 18 |id_#res|) (<= |id_#in~x| 18))) (.cse15 (and (<= |id_#in~x| 21) (<= 21 |id_#in~x|) (<= 21 |id_#res|) .cse0 (<= |id_#res| 21)))) (and (or (and (<= 7 |id_#res|) .cse0 (<= |id_#res| 7) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) .cse1 .cse2 (and .cse0 (<= |id_#in~x| 10) (<= 10 |id_#in~x|) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= 2 |id_#res|) .cse0 (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= 9 |id_#res|) .cse0 (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 9 |id_#in~x|)) .cse3 .cse4 (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (<= |id_#res| 8) .cse0 (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) .cse5 (and (<= |id_#res| 6) .cse0 (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) .cse6 (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)) .cse7 (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= |id_#res| 5)) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (and (<= 11 |id_#in~x|) .cse0 (<= |id_#res| 11) (<= 11 |id_#res|)) (and .cse0 (= |id_#res| 0) (= |id_#in~x| 0)) .cse14 .cse15) (or .cse7 .cse1 .cse2 .cse8 (not .cse16) .cse9 .cse3 .cse10 .cse4 .cse11 .cse12 .cse13 .cse5 .cse6 .cse14 .cse15)))) [2020-08-22 22:11:16,035 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2020-08-22 22:11:16,035 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-08-22 22:11:16,035 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-08-22 22:11:16,035 INFO L264 CegarLoopResult]: At program point L6-1(line 6) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= 4 |id_#t~ret0|) (<= |id_#t~ret0| 4)) (and (<= 12 |id_#in~x|) (<= 11 |id_#t~ret0|) .cse0 (<= |id_#in~x| 12) (<= |id_#t~ret0| 11)) (and (<= |id_#t~ret0| 23) (<= 23 |id_#t~ret0|) .cse0 (<= |id_#in~x| 24) (<= 24 |id_#in~x|)) (and .cse0 (<= |id_#in~x| 22) (<= 22 |id_#in~x|) (<= |id_#t~ret0| 21) (<= 21 |id_#t~ret0|)) (and .cse0 (<= 23 |id_#in~x|) (<= |id_#t~ret0| 22) (<= |id_#in~x| 23) (<= 22 |id_#t~ret0|)) (and .cse0 (<= 1 |id_#t~ret0|) (<= 2 |id_#in~x|) (<= |id_#t~ret0| 1) (<= |id_#in~x| 2)) (and (<= 15 |id_#in~x|) (<= |id_#t~ret0| 14) .cse0 (<= 14 |id_#t~ret0|) (<= |id_#in~x| 15)) (and (<= |id_#t~ret0| 5) .cse0 (<= 6 |id_#in~x|) (<= |id_#in~x| 6) (<= 5 |id_#t~ret0|)) (and (<= |id_#t~ret0| 9) (<= 9 |id_#t~ret0|) .cse0 (<= |id_#in~x| 10) (<= 10 |id_#in~x|)) (and (<= 24 |id_#t~ret0|) (<= 25 |id_#in~x|) .cse0 (<= |id_#t~ret0| 24)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) (<= |id_#t~ret0| 12) .cse0 (<= 12 |id_#t~ret0|)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret0| 0) (<= |id_#in~x| 1)) (and .cse0 (<= 26 |id_#in~x|)) (and (<= |id_#in~x| 11) (<= 11 |id_#in~x|) .cse0 (<= |id_#t~ret0| 10) (<= 10 |id_#t~ret0|)) (and .cse0 (<= |id_#in~x| 9) (<= 8 |id_#t~ret0|) (<= 9 |id_#in~x|) (<= |id_#t~ret0| 8)) (and (<= 7 |id_#t~ret0|) (<= |id_#t~ret0| 7) .cse0 (<= 8 |id_#in~x|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret0| 19) .cse0 (<= |id_#in~x| 20) (<= 19 |id_#t~ret0|) (<= 20 |id_#in~x|)) (and (<= 13 |id_#t~ret0|) (<= 14 |id_#in~x|) .cse0 (<= |id_#t~ret0| 13) (<= |id_#in~x| 14)) (and (<= 17 |id_#t~ret0|) (<= 18 |id_#in~x|) .cse0 (<= |id_#in~x| 18) (<= |id_#t~ret0| 17)) (and (<= |id_#in~x| 21) (<= 21 |id_#in~x|) .cse0 (<= 20 |id_#t~ret0|) (<= |id_#t~ret0| 20)) (and .cse0 (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 15 |id_#t~ret0|) (<= |id_#t~ret0| 15)) (and (<= 18 |id_#t~ret0|) .cse0 (<= |id_#in~x| 19) (<= 19 |id_#in~x|) (<= |id_#t~ret0| 18)) (and .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret0|) (<= |id_#t~ret0| 3) (<= 4 |id_#in~x|)) (and (<= 3 |id_#in~x|) (<= |id_#t~ret0| 2) .cse0 (<= |id_#in~x| 3) (<= 2 |id_#t~ret0|)) (and .cse0 (<= |id_#t~ret0| 6) (<= 7 |id_#in~x|) (<= 6 |id_#t~ret0|) (<= |id_#in~x| 7)) (and (<= |id_#t~ret0| 16) .cse0 (<= 16 |id_#t~ret0|) (<= |id_#in~x| 17) (<= 17 |id_#in~x|)))) [2020-08-22 22:11:16,035 INFO L264 CegarLoopResult]: At program point L5-1(line 5) the Hoare annotation is: (and (= |id_#in~x| id_~x) (= |id_#in~x| 0)) [2020-08-22 22:11:16,036 INFO L264 CegarLoopResult]: At program point L6-2(line 6) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= 4 |id_#t~ret0|) (<= |id_#t~ret0| 4)) (and (<= 12 |id_#in~x|) (<= 11 |id_#t~ret0|) .cse0 (<= |id_#in~x| 12) (<= |id_#t~ret0| 11)) (and (<= |id_#t~ret0| 23) (<= 23 |id_#t~ret0|) .cse0 (<= |id_#in~x| 24) (<= 24 |id_#in~x|)) (and .cse0 (<= |id_#in~x| 22) (<= 22 |id_#in~x|) (<= |id_#t~ret0| 21) (<= 21 |id_#t~ret0|)) (and .cse0 (<= 23 |id_#in~x|) (<= |id_#t~ret0| 22) (<= |id_#in~x| 23) (<= 22 |id_#t~ret0|)) (and .cse0 (<= 1 |id_#t~ret0|) (<= 2 |id_#in~x|) (<= |id_#t~ret0| 1) (<= |id_#in~x| 2)) (and (<= 15 |id_#in~x|) (<= |id_#t~ret0| 14) .cse0 (<= 14 |id_#t~ret0|) (<= |id_#in~x| 15)) (and (<= |id_#t~ret0| 5) .cse0 (<= 6 |id_#in~x|) (<= |id_#in~x| 6) (<= 5 |id_#t~ret0|)) (and (<= |id_#t~ret0| 9) (<= 9 |id_#t~ret0|) .cse0 (<= |id_#in~x| 10) (<= 10 |id_#in~x|)) (and (<= 24 |id_#t~ret0|) (<= 25 |id_#in~x|) .cse0 (<= |id_#t~ret0| 24)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) (<= |id_#t~ret0| 12) .cse0 (<= 12 |id_#t~ret0|)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret0| 0) (<= |id_#in~x| 1)) (and .cse0 (<= 26 |id_#in~x|)) (and (<= |id_#in~x| 11) (<= 11 |id_#in~x|) .cse0 (<= |id_#t~ret0| 10) (<= 10 |id_#t~ret0|)) (and .cse0 (<= |id_#in~x| 9) (<= 8 |id_#t~ret0|) (<= 9 |id_#in~x|) (<= |id_#t~ret0| 8)) (and (<= 7 |id_#t~ret0|) (<= |id_#t~ret0| 7) .cse0 (<= 8 |id_#in~x|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret0| 19) .cse0 (<= |id_#in~x| 20) (<= 19 |id_#t~ret0|) (<= 20 |id_#in~x|)) (and (<= 13 |id_#t~ret0|) (<= 14 |id_#in~x|) .cse0 (<= |id_#t~ret0| 13) (<= |id_#in~x| 14)) (and (<= 17 |id_#t~ret0|) (<= 18 |id_#in~x|) .cse0 (<= |id_#in~x| 18) (<= |id_#t~ret0| 17)) (and (<= |id_#in~x| 21) (<= 21 |id_#in~x|) .cse0 (<= 20 |id_#t~ret0|) (<= |id_#t~ret0| 20)) (and .cse0 (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 15 |id_#t~ret0|) (<= |id_#t~ret0| 15)) (and (<= 18 |id_#t~ret0|) .cse0 (<= |id_#in~x| 19) (<= 19 |id_#in~x|) (<= |id_#t~ret0| 18)) (and .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret0|) (<= |id_#t~ret0| 3) (<= 4 |id_#in~x|)) (and (<= 3 |id_#in~x|) (<= |id_#t~ret0| 2) .cse0 (<= |id_#in~x| 3) (<= 2 |id_#t~ret0|)) (and .cse0 (<= |id_#t~ret0| 6) (<= 7 |id_#in~x|) (<= 6 |id_#t~ret0|) (<= |id_#in~x| 7)) (and (<= |id_#t~ret0| 16) .cse0 (<= 16 |id_#t~ret0|) (<= |id_#in~x| 17) (<= 17 |id_#in~x|)))) [2020-08-22 22:11:16,036 INFO L264 CegarLoopResult]: At program point L6-3(line 6) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 13 |id_#t~ret0|) (<= |id_#res| 14) (<= 14 |id_#in~x|) .cse0 (<= |id_#t~ret0| 13) (<= 14 |id_#res|) (<= |id_#in~x| 14)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= |id_#res| 5) (<= 4 |id_#t~ret0|) (<= |id_#t~ret0| 4)) (and (<= |id_#res| 17) (<= |id_#t~ret0| 16) (<= 17 |id_#res|) .cse0 (<= 16 |id_#t~ret0|) (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= |id_#t~ret0| 9) (<= 9 |id_#t~ret0|) .cse0 (<= |id_#in~x| 10) (<= 10 |id_#in~x|) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= 15 |id_#res|) (<= 15 |id_#in~x|) (<= |id_#t~ret0| 14) .cse0 (<= 14 |id_#t~ret0|) (<= |id_#in~x| 15) (<= |id_#res| 15)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret0|) (<= |id_#t~ret0| 3) (<= 4 |id_#in~x|)) (and (<= 19 |id_#res|) (<= 18 |id_#t~ret0|) (<= |id_#res| 19) .cse0 (<= |id_#in~x| 19) (<= 19 |id_#in~x|) (<= |id_#t~ret0| 18)) (and (<= |id_#res| 23) .cse0 (<= 23 |id_#in~x|) (<= |id_#t~ret0| 22) (<= |id_#in~x| 23) (<= 22 |id_#t~ret0|) (<= 23 |id_#res|)) (and (<= |id_#t~ret0| 5) (<= |id_#res| 6) .cse0 (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6) (<= 5 |id_#t~ret0|)) (and (<= |id_#res| 16) .cse0 (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 16 |id_#res|) (<= 15 |id_#t~ret0|) (<= |id_#t~ret0| 15)) (and (<= |id_#t~ret0| 23) (<= 23 |id_#t~ret0|) .cse0 (<= |id_#in~x| 24) (<= |id_#res| 24) (<= 24 |id_#in~x|) (<= 24 |id_#res|)) (and (<= |id_#in~x| 11) (<= 11 |id_#in~x|) .cse0 (<= |id_#res| 11) (<= 11 |id_#res|) (<= |id_#t~ret0| 10) (<= 10 |id_#t~ret0|)) (and (<= 7 |id_#res|) .cse0 (<= |id_#res| 7) (<= |id_#t~ret0| 6) (<= 7 |id_#in~x|) (<= 6 |id_#t~ret0|) (<= |id_#in~x| 7)) (and (<= 12 |id_#in~x|) (<= 11 |id_#t~ret0|) .cse0 (<= |id_#res| 12) (<= |id_#in~x| 12) (<= 12 |id_#res|) (<= |id_#t~ret0| 11)) (and .cse0 (<= 26 |id_#in~x|)) (and (<= |id_#res| 18) (<= 17 |id_#t~ret0|) (<= 18 |id_#in~x|) .cse0 (<= 18 |id_#res|) (<= |id_#in~x| 18) (<= |id_#t~ret0| 17)) (and .cse0 (<= 22 |id_#res|) (<= |id_#in~x| 22) (<= |id_#res| 22) (<= 22 |id_#in~x|) (<= |id_#t~ret0| 21) (<= 21 |id_#t~ret0|)) (and (<= 24 |id_#t~ret0|) (<= 25 |id_#in~x|) .cse0 (<= |id_#res| 25) (<= |id_#t~ret0| 24) (<= 25 |id_#res|)) (and (<= |id_#t~ret0| 19) .cse0 (<= |id_#in~x| 20) (<= 20 |id_#res|) (<= |id_#res| 20) (<= 19 |id_#t~ret0|) (<= 20 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (= |id_#t~ret0| 0) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) (<= |id_#t~ret0| 2) .cse0 (<= |id_#in~x| 3) (<= 3 |id_#res|) (<= 2 |id_#t~ret0|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) (<= |id_#t~ret0| 12) .cse0 (<= |id_#res| 13) (<= 13 |id_#res|) (<= 12 |id_#t~ret0|)) (and (<= 7 |id_#t~ret0|) (<= |id_#res| 8) (<= |id_#t~ret0| 7) .cse0 (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) (and (<= |id_#in~x| 21) (<= 21 |id_#in~x|) (<= 21 |id_#res|) .cse0 (<= |id_#res| 21) (<= 20 |id_#t~ret0|) (<= |id_#t~ret0| 20)) (and (<= 9 |id_#res|) .cse0 (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 8 |id_#t~ret0|) (<= 9 |id_#in~x|) (<= |id_#t~ret0| 8)) (and (<= 2 |id_#res|) .cse0 (<= 1 |id_#t~ret0|) (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#t~ret0| 1) (<= |id_#in~x| 2)))) [2020-08-22 22:11:16,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:11:16 BoogieIcfgContainer [2020-08-22 22:11:16,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:11:16,079 INFO L168 Benchmark]: Toolchain (without parser) took 42227.84 ms. Allocated memory was 135.3 MB in the beginning and 970.5 MB in the end (delta: 835.2 MB). Free memory was 99.8 MB in the beginning and 188.9 MB in the end (delta: -89.1 MB). Peak memory consumption was 813.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:11:16,080 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 22:11:16,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.36 ms. Allocated memory is still 135.3 MB. Free memory was 99.4 MB in the beginning and 90.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-22 22:11:16,081 INFO L168 Benchmark]: Boogie Preprocessor took 24.12 ms. Allocated memory is still 135.3 MB. Free memory was 90.3 MB in the beginning and 88.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:11:16,081 INFO L168 Benchmark]: RCFGBuilder took 337.82 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 88.9 MB in the beginning and 165.7 MB in the end (delta: -76.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:11:16,082 INFO L168 Benchmark]: TraceAbstraction took 41624.91 ms. Allocated memory was 198.7 MB in the beginning and 970.5 MB in the end (delta: 771.8 MB). Free memory was 165.7 MB in the beginning and 188.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 815.7 MB. Max. memory is 7.1 GB. [2020-08-22 22:11:16,087 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 235.36 ms. Allocated memory is still 135.3 MB. Free memory was 99.4 MB in the beginning and 90.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.12 ms. Allocated memory is still 135.3 MB. Free memory was 90.3 MB in the beginning and 88.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.82 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 88.9 MB in the beginning and 165.7 MB in the end (delta: -76.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41624.91 ms. Allocated memory was 198.7 MB in the beginning and 970.5 MB in the end (delta: 771.8 MB). Free memory was 165.7 MB in the beginning and 188.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 815.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 9]: Procedure Contract for main Derived contract for procedure main: 25 <= input - ProcedureContractResult [Line: 4]: Procedure Contract for id Derived contract for procedure id: ((((((((((((((((((((((((((((((7 <= \result && \old(x) == x) && \result <= 7) && 7 <= \old(x)) && \old(x) <= 7) || ((((15 <= \result && 15 <= \old(x)) && \old(x) == x) && \old(x) <= 15) && \result <= 15)) || ((((\result <= 16 && \old(x) == x) && 16 <= \old(x)) && \old(x) <= 16) && 16 <= \result)) || ((((\old(x) == x && \old(x) <= 10) && 10 <= \old(x)) && 10 <= \result) && \result <= 10)) || ((((2 <= \result && \old(x) == x) && \result <= 2) && 2 <= \old(x)) && \old(x) <= 2)) || ((((\result <= 3 && 3 <= \old(x)) && \old(x) == x) && \old(x) <= 3) && 3 <= \result)) || ((((9 <= \result && \old(x) == x) && \old(x) <= 9) && \result <= 9) && 9 <= \old(x))) || ((((\old(x) == x && 22 <= \result) && \old(x) <= 22) && \result <= 22) && 22 <= \old(x))) || ((((13 <= \old(x) && \old(x) <= 13) && \old(x) == x) && \result <= 13) && 13 <= \result)) || ((((\result <= 4 && 4 <= \result) && \old(x) == x) && \old(x) <= 4) && 4 <= \old(x))) || ((((\result <= 8 && \old(x) == x) && 8 <= \old(x)) && 8 <= \result) && \old(x) <= 8)) || ((((\old(x) == x && \old(x) <= 24) && \result <= 24) && 24 <= \old(x)) && 24 <= \result)) || ((((\result <= 6 && \old(x) == x) && 6 <= \old(x)) && 6 <= \result) && \old(x) <= 6)) || ((((19 <= \result && \result <= 19) && \old(x) == x) && \old(x) <= 19) && 19 <= \old(x))) || ((((1 <= \old(x) && \old(x) == x) && \result <= 1) && 1 <= \result) && \old(x) <= 1)) || (\old(x) == x && 26 <= \old(x))) || ((((5 <= \result && 5 <= \old(x)) && \old(x) <= 5) && \old(x) == x) && \result <= 5)) || ((((\result <= 23 && \old(x) == x) && 23 <= \old(x)) && \old(x) <= 23) && 23 <= \result)) || ((((\result <= 17 && 17 <= \result) && \old(x) == x) && \old(x) <= 17) && 17 <= \old(x))) || (((25 <= \old(x) && \old(x) == x) && \result <= 25) && 25 <= \result)) || ((((\old(x) == x && \old(x) <= 20) && 20 <= \result) && \result <= 20) && 20 <= \old(x))) || ((((\result <= 14 && 14 <= \old(x)) && \old(x) == x) && 14 <= \result) && \old(x) <= 14)) || ((((12 <= \old(x) && \old(x) == x) && \result <= 12) && \old(x) <= 12) && 12 <= \result)) || (((11 <= \old(x) && \old(x) == x) && \result <= 11) && 11 <= \result)) || ((\old(x) == x && \result == 0) && \old(x) == 0)) || ((((\result <= 18 && 18 <= \old(x)) && \old(x) == x) && 18 <= \result) && \old(x) <= 18)) || ((((\old(x) <= 21 && 21 <= \old(x)) && 21 <= \result) && \old(x) == x) && \result <= 21)) && ((((((((((((((((\old(x) == x && 26 <= \old(x)) || ((((15 <= \result && 15 <= \old(x)) && \old(x) == x) && \old(x) <= 15) && \result <= 15)) || ((((\result <= 16 && \old(x) == x) && 16 <= \old(x)) && \old(x) <= 16) && 16 <= \result)) || ((((\result <= 23 && \old(x) == x) && 23 <= \old(x)) && \old(x) <= 23) && 23 <= \result)) || !(12 <= \old(x))) || ((((\result <= 17 && 17 <= \result) && \old(x) == x) && \old(x) <= 17) && 17 <= \old(x))) || ((((\old(x) == x && 22 <= \result) && \old(x) <= 22) && \result <= 22) && 22 <= \old(x))) || (((25 <= \old(x) && \old(x) == x) && \result <= 25) && 25 <= \result)) || ((((13 <= \old(x) && \old(x) <= 13) && \old(x) == x) && \result <= 13) && 13 <= \result)) || ((((\old(x) == x && \old(x) <= 20) && 20 <= \result) && \result <= 20) && 20 <= \old(x))) || ((((\result <= 14 && 14 <= \old(x)) && \old(x) == x) && 14 <= \result) && \old(x) <= 14)) || ((((12 <= \old(x) && \old(x) == x) && \result <= 12) && \old(x) <= 12) && 12 <= \result)) || ((((\old(x) == x && \old(x) <= 24) && \result <= 24) && 24 <= \old(x)) && 24 <= \result)) || ((((19 <= \result && \result <= 19) && \old(x) == x) && \old(x) <= 19) && 19 <= \old(x))) || ((((\result <= 18 && 18 <= \old(x)) && \old(x) == x) && 18 <= \result) && \old(x) <= 18)) || ((((\old(x) <= 21 && 21 <= \old(x)) && 21 <= \result) && \old(x) == x) && \result <= 21)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 34.2s, OverallIterations: 27, TraceHistogramMax: 27, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 659 SDtfs, 1773 SDslu, 6608 SDs, 0 SdLazy, 7212 SolverSat, 234 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1673 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 835 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5600 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 27 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 259 PreInvPairs, 2518 NumberOfFragments, 2730 HoareAnnotationTreeSize, 259 FomulaSimplifications, 1786 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 25 FomulaSimplificationsInter, 30158 FormulaSimplificationTreeSizeReductionInter, 5.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 3240 NumberOfCodeBlocks, 3240 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 3213 ConstructedInterpolants, 0 QuantifiedInterpolants, 1376573 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 1 PerfectInterpolantSequences, 11102/24804 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...