/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/eca-rers2012/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:50:25,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:50:25,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:50:25,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 22:50:25,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:50:25,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:50:25,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:50:25,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:50:25,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:50:25,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:50:25,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:50:25,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:50:25,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:50:25,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:50:25,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:50:25,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:50:25,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:50:25,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:50:25,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:50:25,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:50:25,413 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 22:50:25,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:50:25,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:50:25,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:50:25,425 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:50:25,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:50:25,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:50:25,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:50:25,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:50:25,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:50:25,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:50:25,427 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:50:25,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:50:25,428 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:50:25,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:50:25,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:50:25,428 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:50:25,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:50:25,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:50:25,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:50:25,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:50:25,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:50:25,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:50:25,430 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 22:50:25,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:50:25,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:50:25,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:50:25,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:50:25,725 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:50:25,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-08-22 22:50:25,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360c7cd60/52d9b2473509487c9d35e39a6a510225/FLAG22c4a31ff [2020-08-22 22:50:26,381 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:50:26,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-08-22 22:50:26,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360c7cd60/52d9b2473509487c9d35e39a6a510225/FLAG22c4a31ff [2020-08-22 22:50:26,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360c7cd60/52d9b2473509487c9d35e39a6a510225 [2020-08-22 22:50:26,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:50:26,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:50:26,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:50:26,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:50:26,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:50:26,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:50:26" (1/1) ... [2020-08-22 22:50:26,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554bc22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:26, skipping insertion in model container [2020-08-22 22:50:26,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:50:26" (1/1) ... [2020-08-22 22:50:26,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:50:26,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:50:27,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:50:27,228 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:50:27,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:50:27,606 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:50:27,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:27 WrapperNode [2020-08-22 22:50:27,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:50:27,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:50:27,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:50:27,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:50:27,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:27" (1/1) ... [2020-08-22 22:50:27,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:27" (1/1) ... [2020-08-22 22:50:27,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:27" (1/1) ... [2020-08-22 22:50:27,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:27" (1/1) ... [2020-08-22 22:50:27,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:27" (1/1) ... [2020-08-22 22:50:27,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:27" (1/1) ... [2020-08-22 22:50:27,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:27" (1/1) ... [2020-08-22 22:50:27,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:50:27,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:50:27,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:50:27,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:50:27,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:27" (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 22:50:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:50:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:50:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-08-22 22:50:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:50:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-08-22 22:50:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:50:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:50:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:50:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:50:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:50:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:50:30,400 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:50:30,401 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 22:50:30,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:50:30 BoogieIcfgContainer [2020-08-22 22:50:30,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:50:30,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:50:30,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:50:30,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:50:30,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:50:26" (1/3) ... [2020-08-22 22:50:30,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5664fe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:50:30, skipping insertion in model container [2020-08-22 22:50:30,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:50:27" (2/3) ... [2020-08-22 22:50:30,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5664fe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:50:30, skipping insertion in model container [2020-08-22 22:50:30,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:50:30" (3/3) ... [2020-08-22 22:50:30,422 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-08-22 22:50:30,436 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:50:30,446 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:50:30,462 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:50:30,490 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:50:30,490 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:50:30,490 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:50:30,491 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:50:30,491 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:50:30,491 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:50:30,492 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:50:30,492 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:50:30,522 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-08-22 22:50:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 22:50:30,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:50:30,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:50:30,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:50:30,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:50:30,546 INFO L82 PathProgramCache]: Analyzing trace with hash -123889732, now seen corresponding path program 1 times [2020-08-22 22:50:30,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:50:30,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888622467] [2020-08-22 22:50:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:50:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:30,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:50:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:30,930 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 22:50:30,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888622467] [2020-08-22 22:50:30,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:50:30,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:50:30,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249877760] [2020-08-22 22:50:30,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:50:30,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:50:30,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:50:30,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:50:30,966 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-08-22 22:50:35,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:50:35,794 INFO L93 Difference]: Finished difference Result 2361 states and 3156 transitions. [2020-08-22 22:50:35,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:50:35,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-08-22 22:50:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:50:35,830 INFO L225 Difference]: With dead ends: 2361 [2020-08-22 22:50:35,830 INFO L226 Difference]: Without dead ends: 1487 [2020-08-22 22:50:35,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:50:35,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-08-22 22:50:36,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1155. [2020-08-22 22:50:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-08-22 22:50:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1484 transitions. [2020-08-22 22:50:36,067 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1484 transitions. Word has length 55 [2020-08-22 22:50:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:50:36,067 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1484 transitions. [2020-08-22 22:50:36,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:50:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1484 transitions. [2020-08-22 22:50:36,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 22:50:36,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:50:36,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:50:36,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:50:36,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:50:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:50:36,100 INFO L82 PathProgramCache]: Analyzing trace with hash 736411249, now seen corresponding path program 1 times [2020-08-22 22:50:36,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:50:36,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535494408] [2020-08-22 22:50:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:50:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:36,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:50:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:50:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:50:36,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535494408] [2020-08-22 22:50:36,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:50:36,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 22:50:36,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089344152] [2020-08-22 22:50:36,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:50:36,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:50:36,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:50:36,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:50:36,442 INFO L87 Difference]: Start difference. First operand 1155 states and 1484 transitions. Second operand 7 states. [2020-08-22 22:50:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:50:40,910 INFO L93 Difference]: Finished difference Result 3082 states and 4163 transitions. [2020-08-22 22:50:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:50:40,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-08-22 22:50:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:50:40,947 INFO L225 Difference]: With dead ends: 3082 [2020-08-22 22:50:40,947 INFO L226 Difference]: Without dead ends: 1944 [2020-08-22 22:50:40,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:50:40,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-08-22 22:50:41,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1847. [2020-08-22 22:50:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1847 states. [2020-08-22 22:50:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2324 transitions. [2020-08-22 22:50:41,264 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2324 transitions. Word has length 136 [2020-08-22 22:50:41,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:50:41,268 INFO L479 AbstractCegarLoop]: Abstraction has 1847 states and 2324 transitions. [2020-08-22 22:50:41,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:50:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2324 transitions. [2020-08-22 22:50:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-22 22:50:41,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:50:41,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:50:41,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:50:41,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:50:41,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:50:41,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1086264008, now seen corresponding path program 1 times [2020-08-22 22:50:41,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:50:41,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297322238] [2020-08-22 22:50:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:50:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:41,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:50:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:41,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:50:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:50:41,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297322238] [2020-08-22 22:50:41,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:50:41,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 22:50:41,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822668258] [2020-08-22 22:50:41,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:50:41,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:50:41,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:50:41,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:50:41,657 INFO L87 Difference]: Start difference. First operand 1847 states and 2324 transitions. Second operand 7 states. [2020-08-22 22:50:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:50:46,122 INFO L93 Difference]: Finished difference Result 4824 states and 6321 transitions. [2020-08-22 22:50:46,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:50:46,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-08-22 22:50:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:50:46,150 INFO L225 Difference]: With dead ends: 4824 [2020-08-22 22:50:46,151 INFO L226 Difference]: Without dead ends: 2994 [2020-08-22 22:50:46,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:50:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-08-22 22:50:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2913. [2020-08-22 22:50:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2913 states. [2020-08-22 22:50:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3624 transitions. [2020-08-22 22:50:46,463 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3624 transitions. Word has length 144 [2020-08-22 22:50:46,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:50:46,464 INFO L479 AbstractCegarLoop]: Abstraction has 2913 states and 3624 transitions. [2020-08-22 22:50:46,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:50:46,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3624 transitions. [2020-08-22 22:50:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-08-22 22:50:46,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:50:46,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:50:46,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:50:46,470 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:50:46,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:50:46,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1034486148, now seen corresponding path program 1 times [2020-08-22 22:50:46,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:50:46,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700652471] [2020-08-22 22:50:46,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:50:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:46,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:50:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:50:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 22:50:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:46,827 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 74 proven. 65 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 22:50:46,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700652471] [2020-08-22 22:50:46,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:50:46,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:50:46,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048659531] [2020-08-22 22:50:46,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:50:46,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:50:46,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:50:46,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:50:46,831 INFO L87 Difference]: Start difference. First operand 2913 states and 3624 transitions. Second operand 8 states. [2020-08-22 22:50:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:50:50,889 INFO L93 Difference]: Finished difference Result 5476 states and 6930 transitions. [2020-08-22 22:50:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:50:50,890 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2020-08-22 22:50:50,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:50:50,910 INFO L225 Difference]: With dead ends: 5476 [2020-08-22 22:50:50,910 INFO L226 Difference]: Without dead ends: 2974 [2020-08-22 22:50:50,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:50:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-08-22 22:50:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2917. [2020-08-22 22:50:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2917 states. [2020-08-22 22:50:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3623 transitions. [2020-08-22 22:50:51,228 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3623 transitions. Word has length 220 [2020-08-22 22:50:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:50:51,228 INFO L479 AbstractCegarLoop]: Abstraction has 2917 states and 3623 transitions. [2020-08-22 22:50:51,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:50:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3623 transitions. [2020-08-22 22:50:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-22 22:50:51,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:50:51,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:50:51,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:50:51,235 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:50:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:50:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1151458182, now seen corresponding path program 1 times [2020-08-22 22:50:51,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:50:51,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266975053] [2020-08-22 22:50:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:50:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:50:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:51,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:50:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:51,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 22:50:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 116 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 22:50:51,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266975053] [2020-08-22 22:50:51,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:50:51,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 22:50:51,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6735673] [2020-08-22 22:50:51,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:50:51,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:50:51,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:50:51,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:50:51,591 INFO L87 Difference]: Start difference. First operand 2917 states and 3623 transitions. Second operand 6 states. [2020-08-22 22:50:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:50:54,628 INFO L93 Difference]: Finished difference Result 7172 states and 9353 transitions. [2020-08-22 22:50:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 22:50:54,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 269 [2020-08-22 22:50:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:50:54,664 INFO L225 Difference]: With dead ends: 7172 [2020-08-22 22:50:54,664 INFO L226 Difference]: Without dead ends: 4666 [2020-08-22 22:50:54,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:50:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2020-08-22 22:50:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4601. [2020-08-22 22:50:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2020-08-22 22:50:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 5915 transitions. [2020-08-22 22:50:55,097 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 5915 transitions. Word has length 269 [2020-08-22 22:50:55,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:50:55,098 INFO L479 AbstractCegarLoop]: Abstraction has 4601 states and 5915 transitions. [2020-08-22 22:50:55,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:50:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 5915 transitions. [2020-08-22 22:50:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-22 22:50:55,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:50:55,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:50:55,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:50:55,106 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:50:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:50:55,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1320429082, now seen corresponding path program 1 times [2020-08-22 22:50:55,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:50:55,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429522374] [2020-08-22 22:50:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:50:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:55,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:50:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:55,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:50:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:50:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:50:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 22:50:55,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429522374] [2020-08-22 22:50:55,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:50:55,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 22:50:55,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882180537] [2020-08-22 22:50:55,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:50:55,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:50:55,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:50:55,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:50:55,509 INFO L87 Difference]: Start difference. First operand 4601 states and 5915 transitions. Second operand 5 states. [2020-08-22 22:50:59,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:50:59,748 INFO L93 Difference]: Finished difference Result 9909 states and 13093 transitions. [2020-08-22 22:50:59,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:50:59,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2020-08-22 22:50:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:50:59,782 INFO L225 Difference]: With dead ends: 9909 [2020-08-22 22:50:59,782 INFO L226 Difference]: Without dead ends: 5719 [2020-08-22 22:50:59,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:50:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5719 states. [2020-08-22 22:51:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5719 to 5662. [2020-08-22 22:51:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5662 states. [2020-08-22 22:51:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 7396 transitions. [2020-08-22 22:51:00,494 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 7396 transitions. Word has length 277 [2020-08-22 22:51:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:51:00,495 INFO L479 AbstractCegarLoop]: Abstraction has 5662 states and 7396 transitions. [2020-08-22 22:51:00,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:51:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 7396 transitions. [2020-08-22 22:51:00,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-22 22:51:00,502 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:51:00,502 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:51:00,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:51:00,503 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:51:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:51:00,503 INFO L82 PathProgramCache]: Analyzing trace with hash -93697981, now seen corresponding path program 1 times [2020-08-22 22:51:00,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:51:00,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222150334] [2020-08-22 22:51:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:51:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:00,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:51:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:51:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 22:51:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-08-22 22:51:00,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222150334] [2020-08-22 22:51:00,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:51:00,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:51:00,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128013138] [2020-08-22 22:51:00,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:51:00,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:51:00,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:51:00,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:51:00,984 INFO L87 Difference]: Start difference. First operand 5662 states and 7396 transitions. Second operand 9 states. [2020-08-22 22:51:07,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:51:07,734 INFO L93 Difference]: Finished difference Result 14775 states and 20627 transitions. [2020-08-22 22:51:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 22:51:07,735 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 279 [2020-08-22 22:51:07,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:51:07,792 INFO L225 Difference]: With dead ends: 14775 [2020-08-22 22:51:07,792 INFO L226 Difference]: Without dead ends: 9524 [2020-08-22 22:51:07,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 22:51:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9524 states. [2020-08-22 22:51:08,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9524 to 9230. [2020-08-22 22:51:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9230 states. [2020-08-22 22:51:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 12961 transitions. [2020-08-22 22:51:08,774 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 12961 transitions. Word has length 279 [2020-08-22 22:51:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:51:08,775 INFO L479 AbstractCegarLoop]: Abstraction has 9230 states and 12961 transitions. [2020-08-22 22:51:08,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:51:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 12961 transitions. [2020-08-22 22:51:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-08-22 22:51:08,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:51:08,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:51:08,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:51:08,789 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:51:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:51:08,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1780607293, now seen corresponding path program 1 times [2020-08-22 22:51:08,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:51:08,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373822156] [2020-08-22 22:51:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:51:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:51:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:51:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:51:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 150 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 22:51:09,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373822156] [2020-08-22 22:51:09,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:51:09,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:51:09,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911475735] [2020-08-22 22:51:09,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:51:09,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:51:09,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:51:09,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:51:09,167 INFO L87 Difference]: Start difference. First operand 9230 states and 12961 transitions. Second operand 9 states. [2020-08-22 22:51:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:51:18,418 INFO L93 Difference]: Finished difference Result 29358 states and 43858 transitions. [2020-08-22 22:51:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 22:51:18,420 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 285 [2020-08-22 22:51:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:51:18,549 INFO L225 Difference]: With dead ends: 29358 [2020-08-22 22:51:18,550 INFO L226 Difference]: Without dead ends: 20539 [2020-08-22 22:51:18,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-08-22 22:51:18,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20539 states. [2020-08-22 22:51:21,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20539 to 20239. [2020-08-22 22:51:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20239 states. [2020-08-22 22:51:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20239 states to 20239 states and 28166 transitions. [2020-08-22 22:51:21,515 INFO L78 Accepts]: Start accepts. Automaton has 20239 states and 28166 transitions. Word has length 285 [2020-08-22 22:51:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:51:21,516 INFO L479 AbstractCegarLoop]: Abstraction has 20239 states and 28166 transitions. [2020-08-22 22:51:21,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:51:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 20239 states and 28166 transitions. [2020-08-22 22:51:21,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-22 22:51:21,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:51:21,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:51:21,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:51:21,531 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:51:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:51:21,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1312144757, now seen corresponding path program 1 times [2020-08-22 22:51:21,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:51:21,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007916631] [2020-08-22 22:51:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:51:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:21,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:51:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:21,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:51:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 22:51:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-08-22 22:51:21,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007916631] [2020-08-22 22:51:21,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:51:21,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 22:51:21,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097074577] [2020-08-22 22:51:21,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:51:21,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:51:21,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:51:21,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:51:21,863 INFO L87 Difference]: Start difference. First operand 20239 states and 28166 transitions. Second operand 5 states. [2020-08-22 22:51:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:51:26,568 INFO L93 Difference]: Finished difference Result 45946 states and 64801 transitions. [2020-08-22 22:51:26,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:51:26,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2020-08-22 22:51:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:51:26,711 INFO L225 Difference]: With dead ends: 45946 [2020-08-22 22:51:26,712 INFO L226 Difference]: Without dead ends: 26118 [2020-08-22 22:51:26,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:51:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26118 states. [2020-08-22 22:51:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26118 to 25249. [2020-08-22 22:51:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25249 states. [2020-08-22 22:51:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25249 states to 25249 states and 35010 transitions. [2020-08-22 22:51:29,053 INFO L78 Accepts]: Start accepts. Automaton has 25249 states and 35010 transitions. Word has length 301 [2020-08-22 22:51:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:51:29,053 INFO L479 AbstractCegarLoop]: Abstraction has 25249 states and 35010 transitions. [2020-08-22 22:51:29,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:51:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 25249 states and 35010 transitions. [2020-08-22 22:51:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-08-22 22:51:29,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:51:29,065 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:51:29,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:51:29,066 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:51:29,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:51:29,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1665784485, now seen corresponding path program 1 times [2020-08-22 22:51:29,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:51:29,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706831427] [2020-08-22 22:51:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:51:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:29,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:51:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:51:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:29,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:51:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 22:51:29,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706831427] [2020-08-22 22:51:29,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:51:29,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:51:29,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621404370] [2020-08-22 22:51:29,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:51:29,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:51:29,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:51:29,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:51:29,490 INFO L87 Difference]: Start difference. First operand 25249 states and 35010 transitions. Second operand 7 states. [2020-08-22 22:51:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:51:35,793 INFO L93 Difference]: Finished difference Result 54246 states and 75727 transitions. [2020-08-22 22:51:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:51:35,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-08-22 22:51:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:51:35,925 INFO L225 Difference]: With dead ends: 54246 [2020-08-22 22:51:35,926 INFO L226 Difference]: Without dead ends: 29408 [2020-08-22 22:51:35,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:51:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29408 states. [2020-08-22 22:51:38,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29408 to 29104. [2020-08-22 22:51:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29104 states. [2020-08-22 22:51:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29104 states to 29104 states and 39294 transitions. [2020-08-22 22:51:38,117 INFO L78 Accepts]: Start accepts. Automaton has 29104 states and 39294 transitions. Word has length 312 [2020-08-22 22:51:38,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:51:38,117 INFO L479 AbstractCegarLoop]: Abstraction has 29104 states and 39294 transitions. [2020-08-22 22:51:38,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:51:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 29104 states and 39294 transitions. [2020-08-22 22:51:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-08-22 22:51:38,135 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:51:38,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:51:38,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:51:38,135 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:51:38,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:51:38,136 INFO L82 PathProgramCache]: Analyzing trace with hash 33622082, now seen corresponding path program 1 times [2020-08-22 22:51:38,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:51:38,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859588851] [2020-08-22 22:51:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:51:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:51:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:38,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:51:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:38,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 22:51:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-22 22:51:38,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859588851] [2020-08-22 22:51:38,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:51:38,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 22:51:38,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409849988] [2020-08-22 22:51:38,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:51:38,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:51:38,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:51:38,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:51:38,470 INFO L87 Difference]: Start difference. First operand 29104 states and 39294 transitions. Second operand 6 states. [2020-08-22 22:51:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:51:46,201 INFO L93 Difference]: Finished difference Result 65475 states and 89426 transitions. [2020-08-22 22:51:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 22:51:46,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 338 [2020-08-22 22:51:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:51:46,364 INFO L225 Difference]: With dead ends: 65475 [2020-08-22 22:51:46,365 INFO L226 Difference]: Without dead ends: 36782 [2020-08-22 22:51:46,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:51:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36782 states. [2020-08-22 22:51:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36782 to 35711. [2020-08-22 22:51:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35711 states. [2020-08-22 22:51:49,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35711 states to 35711 states and 48074 transitions. [2020-08-22 22:51:49,092 INFO L78 Accepts]: Start accepts. Automaton has 35711 states and 48074 transitions. Word has length 338 [2020-08-22 22:51:49,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:51:49,093 INFO L479 AbstractCegarLoop]: Abstraction has 35711 states and 48074 transitions. [2020-08-22 22:51:49,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:51:49,093 INFO L276 IsEmpty]: Start isEmpty. Operand 35711 states and 48074 transitions. [2020-08-22 22:51:49,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-08-22 22:51:49,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:51:49,118 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:51:49,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:51:49,119 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:51:49,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:51:49,119 INFO L82 PathProgramCache]: Analyzing trace with hash -32484685, now seen corresponding path program 1 times [2020-08-22 22:51:49,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:51:49,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451620509] [2020-08-22 22:51:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:51:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:49,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:51:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:49,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:51:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:49,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:51:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:49,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 22:51:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-08-22 22:51:50,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451620509] [2020-08-22 22:51:50,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:51:50,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:51:50,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264511961] [2020-08-22 22:51:50,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:51:50,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:51:50,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:51:50,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:51:50,780 INFO L87 Difference]: Start difference. First operand 35711 states and 48074 transitions. Second operand 7 states. [2020-08-22 22:51:55,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:51:55,715 INFO L93 Difference]: Finished difference Result 63740 states and 87072 transitions. [2020-08-22 22:51:55,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:51:55,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-08-22 22:51:55,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:51:55,842 INFO L225 Difference]: With dead ends: 63740 [2020-08-22 22:51:55,842 INFO L226 Difference]: Without dead ends: 28440 [2020-08-22 22:51:55,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:51:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28440 states. [2020-08-22 22:51:58,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28440 to 27787. [2020-08-22 22:51:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27787 states. [2020-08-22 22:51:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27787 states to 27787 states and 35028 transitions. [2020-08-22 22:51:58,067 INFO L78 Accepts]: Start accepts. Automaton has 27787 states and 35028 transitions. Word has length 397 [2020-08-22 22:51:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:51:58,068 INFO L479 AbstractCegarLoop]: Abstraction has 27787 states and 35028 transitions. [2020-08-22 22:51:58,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:51:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 27787 states and 35028 transitions. [2020-08-22 22:51:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-08-22 22:51:58,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:51:58,107 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:51:58,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 22:51:58,107 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:51:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:51:58,107 INFO L82 PathProgramCache]: Analyzing trace with hash -745953394, now seen corresponding path program 1 times [2020-08-22 22:51:58,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:51:58,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118740875] [2020-08-22 22:51:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:51:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:58,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:51:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:58,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:51:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 22:51:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 22:51:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:58,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-08-22 22:51:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:51:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 377 proven. 189 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-08-22 22:51:58,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118740875] [2020-08-22 22:51:58,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:51:58,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:51:58,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728325514] [2020-08-22 22:51:58,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:51:58,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:51:58,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:51:58,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:51:58,831 INFO L87 Difference]: Start difference. First operand 27787 states and 35028 transitions. Second operand 10 states. [2020-08-22 22:52:08,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:52:08,994 INFO L93 Difference]: Finished difference Result 60342 states and 76042 transitions. [2020-08-22 22:52:08,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 22:52:08,995 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 520 [2020-08-22 22:52:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:52:09,113 INFO L225 Difference]: With dead ends: 60342 [2020-08-22 22:52:09,113 INFO L226 Difference]: Without dead ends: 32966 [2020-08-22 22:52:09,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:52:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32966 states. [2020-08-22 22:52:12,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32966 to 32823. [2020-08-22 22:52:12,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32823 states. [2020-08-22 22:52:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32823 states to 32823 states and 40852 transitions. [2020-08-22 22:52:12,183 INFO L78 Accepts]: Start accepts. Automaton has 32823 states and 40852 transitions. Word has length 520 [2020-08-22 22:52:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:52:12,184 INFO L479 AbstractCegarLoop]: Abstraction has 32823 states and 40852 transitions. [2020-08-22 22:52:12,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:52:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 32823 states and 40852 transitions. [2020-08-22 22:52:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-08-22 22:52:12,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:52:12,217 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:52:12,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 22:52:12,217 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:52:12,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:52:12,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1473222243, now seen corresponding path program 1 times [2020-08-22 22:52:12,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:52:12,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724505976] [2020-08-22 22:52:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:52:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:12,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:52:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:12,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:52:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:12,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:52:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:12,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-22 22:52:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:12,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-08-22 22:52:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 178 proven. 389 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-08-22 22:52:12,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724505976] [2020-08-22 22:52:12,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:52:12,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:52:12,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220500142] [2020-08-22 22:52:12,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:52:12,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:52:12,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:52:12,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:52:12,806 INFO L87 Difference]: Start difference. First operand 32823 states and 40852 transitions. Second operand 9 states. [2020-08-22 22:52:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:52:22,140 INFO L93 Difference]: Finished difference Result 67653 states and 84287 transitions. [2020-08-22 22:52:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 22:52:22,141 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 534 [2020-08-22 22:52:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:52:22,245 INFO L225 Difference]: With dead ends: 67653 [2020-08-22 22:52:22,245 INFO L226 Difference]: Without dead ends: 35241 [2020-08-22 22:52:22,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 22:52:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35241 states. [2020-08-22 22:52:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35241 to 34896. [2020-08-22 22:52:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34896 states. [2020-08-22 22:52:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34896 states to 34896 states and 43196 transitions. [2020-08-22 22:52:25,370 INFO L78 Accepts]: Start accepts. Automaton has 34896 states and 43196 transitions. Word has length 534 [2020-08-22 22:52:25,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:52:25,370 INFO L479 AbstractCegarLoop]: Abstraction has 34896 states and 43196 transitions. [2020-08-22 22:52:25,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:52:25,371 INFO L276 IsEmpty]: Start isEmpty. Operand 34896 states and 43196 transitions. [2020-08-22 22:52:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-08-22 22:52:25,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:52:25,415 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:52:25,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 22:52:25,415 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:52:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:52:25,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1332091315, now seen corresponding path program 1 times [2020-08-22 22:52:25,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:52:25,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420122607] [2020-08-22 22:52:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:52:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:25,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:52:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:25,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:52:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 22:52:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-22 22:52:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:25,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-22 22:52:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 191 proven. 301 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2020-08-22 22:52:26,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420122607] [2020-08-22 22:52:26,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:52:26,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:52:26,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342383037] [2020-08-22 22:52:26,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:52:26,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:52:26,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:52:26,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:52:26,011 INFO L87 Difference]: Start difference. First operand 34896 states and 43196 transitions. Second operand 9 states. [2020-08-22 22:52:39,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:52:39,710 INFO L93 Difference]: Finished difference Result 87764 states and 109118 transitions. [2020-08-22 22:52:39,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 22:52:39,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 549 [2020-08-22 22:52:39,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:52:39,874 INFO L225 Difference]: With dead ends: 87764 [2020-08-22 22:52:39,874 INFO L226 Difference]: Without dead ends: 53279 [2020-08-22 22:52:39,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:52:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53279 states. [2020-08-22 22:52:46,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53279 to 52885. [2020-08-22 22:52:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52885 states. [2020-08-22 22:52:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52885 states to 52885 states and 65173 transitions. [2020-08-22 22:52:46,509 INFO L78 Accepts]: Start accepts. Automaton has 52885 states and 65173 transitions. Word has length 549 [2020-08-22 22:52:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:52:46,509 INFO L479 AbstractCegarLoop]: Abstraction has 52885 states and 65173 transitions. [2020-08-22 22:52:46,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:52:46,510 INFO L276 IsEmpty]: Start isEmpty. Operand 52885 states and 65173 transitions. [2020-08-22 22:52:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-08-22 22:52:46,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:52:46,556 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:52:46,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 22:52:46,557 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:52:46,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:52:46,557 INFO L82 PathProgramCache]: Analyzing trace with hash -750949808, now seen corresponding path program 1 times [2020-08-22 22:52:46,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:52:46,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766178271] [2020-08-22 22:52:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:52:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:52:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:52:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:46,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:52:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:46,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-22 22:52:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-08-22 22:52:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:52:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 603 proven. 6 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-08-22 22:52:47,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766178271] [2020-08-22 22:52:47,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:52:47,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:52:47,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319110006] [2020-08-22 22:52:47,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:52:47,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:52:47,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:52:47,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:52:47,321 INFO L87 Difference]: Start difference. First operand 52885 states and 65173 transitions. Second operand 10 states. [2020-08-22 22:53:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:00,456 INFO L93 Difference]: Finished difference Result 112604 states and 139293 transitions. [2020-08-22 22:53:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 22:53:00,457 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 576 [2020-08-22 22:53:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:00,636 INFO L225 Difference]: With dead ends: 112604 [2020-08-22 22:53:00,636 INFO L226 Difference]: Without dead ends: 62675 [2020-08-22 22:53:01,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2020-08-22 22:53:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62675 states. [2020-08-22 22:53:05,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62675 to 61284. [2020-08-22 22:53:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61284 states. [2020-08-22 22:53:06,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61284 states to 61284 states and 75348 transitions. [2020-08-22 22:53:06,050 INFO L78 Accepts]: Start accepts. Automaton has 61284 states and 75348 transitions. Word has length 576 [2020-08-22 22:53:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:06,050 INFO L479 AbstractCegarLoop]: Abstraction has 61284 states and 75348 transitions. [2020-08-22 22:53:06,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:53:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 61284 states and 75348 transitions. [2020-08-22 22:53:06,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-08-22 22:53:06,114 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:06,115 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:53:06,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 22:53:06,115 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:06,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:06,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1575497387, now seen corresponding path program 1 times [2020-08-22 22:53:06,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:06,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396392375] [2020-08-22 22:53:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:06,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:06,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:53:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:53:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:06,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-08-22 22:53:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-08-22 22:53:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 173 proven. 8 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2020-08-22 22:53:06,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396392375] [2020-08-22 22:53:06,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:53:06,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 22:53:06,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791744190] [2020-08-22 22:53:06,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:53:06,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:06,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:53:06,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:06,564 INFO L87 Difference]: Start difference. First operand 61284 states and 75348 transitions. Second operand 5 states. [2020-08-22 22:53:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:16,637 INFO L93 Difference]: Finished difference Result 118426 states and 145834 transitions. [2020-08-22 22:53:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:53:16,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 606 [2020-08-22 22:53:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:16,811 INFO L225 Difference]: With dead ends: 118426 [2020-08-22 22:53:16,812 INFO L226 Difference]: Without dead ends: 60518 [2020-08-22 22:53:16,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:53:16,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60518 states. [2020-08-22 22:53:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60518 to 60450. [2020-08-22 22:53:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60450 states. [2020-08-22 22:53:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60450 states to 60450 states and 74212 transitions. [2020-08-22 22:53:24,895 INFO L78 Accepts]: Start accepts. Automaton has 60450 states and 74212 transitions. Word has length 606 [2020-08-22 22:53:24,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:24,896 INFO L479 AbstractCegarLoop]: Abstraction has 60450 states and 74212 transitions. [2020-08-22 22:53:24,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:53:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 60450 states and 74212 transitions. [2020-08-22 22:53:24,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-08-22 22:53:24,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:24,965 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:53:24,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 22:53:24,965 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:24,965 INFO L82 PathProgramCache]: Analyzing trace with hash 815162497, now seen corresponding path program 1 times [2020-08-22 22:53:24,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:24,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263499056] [2020-08-22 22:53:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:25,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:53:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:25,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 22:53:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:25,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 22:53:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:25,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-08-22 22:53:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:25,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2020-08-22 22:53:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 248 proven. 558 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2020-08-22 22:53:25,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263499056] [2020-08-22 22:53:25,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:53:25,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:53:25,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600986563] [2020-08-22 22:53:25,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:53:25,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:25,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:53:25,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:53:25,755 INFO L87 Difference]: Start difference. First operand 60450 states and 74212 transitions. Second operand 9 states. [2020-08-22 22:53:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:40,162 INFO L93 Difference]: Finished difference Result 133276 states and 164573 transitions. [2020-08-22 22:53:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 22:53:40,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 658 [2020-08-22 22:53:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:40,387 INFO L225 Difference]: With dead ends: 133276 [2020-08-22 22:53:40,387 INFO L226 Difference]: Without dead ends: 76202 [2020-08-22 22:53:40,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:53:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76202 states. [2020-08-22 22:53:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76202 to 74061. [2020-08-22 22:53:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74061 states. [2020-08-22 22:53:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74061 states to 74061 states and 89605 transitions. [2020-08-22 22:53:51,484 INFO L78 Accepts]: Start accepts. Automaton has 74061 states and 89605 transitions. Word has length 658 [2020-08-22 22:53:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:51,485 INFO L479 AbstractCegarLoop]: Abstraction has 74061 states and 89605 transitions. [2020-08-22 22:53:51,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:53:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 74061 states and 89605 transitions. [2020-08-22 22:53:51,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2020-08-22 22:53:51,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:51,561 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:53:51,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 22:53:51,562 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:51,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:51,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2116927898, now seen corresponding path program 1 times [2020-08-22 22:53:51,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:51,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645918938] [2020-08-22 22:53:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:51,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:53:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 22:53:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:51,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 22:53:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:51,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-08-22 22:53:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2020-08-22 22:53:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 328 proven. 608 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-08-22 22:53:52,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645918938] [2020-08-22 22:53:52,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:53:52,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:53:52,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607692584] [2020-08-22 22:53:52,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:53:52,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:52,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:53:52,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:53:52,247 INFO L87 Difference]: Start difference. First operand 74061 states and 89605 transitions. Second operand 10 states. [2020-08-22 22:54:04,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:54:04,623 INFO L93 Difference]: Finished difference Result 149335 states and 180688 transitions. [2020-08-22 22:54:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 22:54:04,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 670 [2020-08-22 22:54:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:54:05,210 INFO L225 Difference]: With dead ends: 149335 [2020-08-22 22:54:05,211 INFO L226 Difference]: Without dead ends: 78608 [2020-08-22 22:54:05,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-08-22 22:54:05,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78608 states. [2020-08-22 22:54:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78608 to 78371. [2020-08-22 22:54:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78371 states. [2020-08-22 22:54:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78371 states to 78371 states and 94578 transitions. [2020-08-22 22:54:12,473 INFO L78 Accepts]: Start accepts. Automaton has 78371 states and 94578 transitions. Word has length 670 [2020-08-22 22:54:12,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:54:12,473 INFO L479 AbstractCegarLoop]: Abstraction has 78371 states and 94578 transitions. [2020-08-22 22:54:12,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:54:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand 78371 states and 94578 transitions. [2020-08-22 22:54:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2020-08-22 22:54:12,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:54:12,556 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:54:12,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 22:54:12,556 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:54:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:54:12,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1653524239, now seen corresponding path program 1 times [2020-08-22 22:54:12,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:54:12,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857135620] [2020-08-22 22:54:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:54:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:12,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:54:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:12,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:54:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:12,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 22:54:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:13,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 22:54:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:13,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 22:54:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:13,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-08-22 22:54:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 304 proven. 642 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-08-22 22:54:17,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857135620] [2020-08-22 22:54:17,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:54:17,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 22:54:17,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519948000] [2020-08-22 22:54:17,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 22:54:17,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:54:17,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 22:54:17,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:54:17,324 INFO L87 Difference]: Start difference. First operand 78371 states and 94578 transitions. Second operand 15 states. [2020-08-22 22:54:18,091 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-08-22 22:54:18,411 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-08-22 22:54:20,843 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-08-22 22:54:22,517 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-08-22 22:54:23,480 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-08-22 22:54:24,106 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-08-22 22:54:25,854 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-08-22 22:54:29,103 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-08-22 22:54:41,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:54:41,713 INFO L93 Difference]: Finished difference Result 164891 states and 198929 transitions. [2020-08-22 22:54:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-22 22:54:41,714 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 680 [2020-08-22 22:54:41,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:54:41,979 INFO L225 Difference]: With dead ends: 164891 [2020-08-22 22:54:41,980 INFO L226 Difference]: Without dead ends: 86931 [2020-08-22 22:54:42,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=537, Invalid=2115, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 22:54:42,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86931 states. [2020-08-22 22:54:56,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86931 to 85041. [2020-08-22 22:54:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85041 states. [2020-08-22 22:54:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85041 states to 85041 states and 102463 transitions. [2020-08-22 22:54:56,439 INFO L78 Accepts]: Start accepts. Automaton has 85041 states and 102463 transitions. Word has length 680 [2020-08-22 22:54:56,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:54:56,439 INFO L479 AbstractCegarLoop]: Abstraction has 85041 states and 102463 transitions. [2020-08-22 22:54:56,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 22:54:56,440 INFO L276 IsEmpty]: Start isEmpty. Operand 85041 states and 102463 transitions. [2020-08-22 22:54:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2020-08-22 22:54:56,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:54:56,532 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:54:56,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 22:54:56,532 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:54:56,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:54:56,533 INFO L82 PathProgramCache]: Analyzing trace with hash 195382071, now seen corresponding path program 1 times [2020-08-22 22:54:56,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:54:56,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591022457] [2020-08-22 22:54:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:54:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:54:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:54:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:54:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 22:54:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:57,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-08-22 22:54:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:57,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-08-22 22:54:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:54:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 225 proven. 724 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-08-22 22:54:57,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591022457] [2020-08-22 22:54:57,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:54:57,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 22:54:57,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068498946] [2020-08-22 22:54:57,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 22:54:57,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:54:57,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 22:54:57,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:54:57,532 INFO L87 Difference]: Start difference. First operand 85041 states and 102463 transitions. Second operand 12 states. [2020-08-22 22:55:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:55:21,218 INFO L93 Difference]: Finished difference Result 174258 states and 210248 transitions. [2020-08-22 22:55:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 22:55:21,218 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 686 [2020-08-22 22:55:21,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:55:21,515 INFO L225 Difference]: With dead ends: 174258 [2020-08-22 22:55:21,515 INFO L226 Difference]: Without dead ends: 91952 [2020-08-22 22:55:21,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=331, Invalid=1229, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 22:55:21,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91952 states. [2020-08-22 22:55:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91952 to 90156. [2020-08-22 22:55:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90156 states. [2020-08-22 22:55:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90156 states to 90156 states and 108505 transitions. [2020-08-22 22:55:37,603 INFO L78 Accepts]: Start accepts. Automaton has 90156 states and 108505 transitions. Word has length 686 [2020-08-22 22:55:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:55:37,603 INFO L479 AbstractCegarLoop]: Abstraction has 90156 states and 108505 transitions. [2020-08-22 22:55:37,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 22:55:37,603 INFO L276 IsEmpty]: Start isEmpty. Operand 90156 states and 108505 transitions. [2020-08-22 22:55:37,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2020-08-22 22:55:37,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:55:37,701 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:55:37,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 22:55:37,701 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:55:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:55:37,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1298374939, now seen corresponding path program 1 times [2020-08-22 22:55:37,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:55:37,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161616949] [2020-08-22 22:55:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:55:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:55:37,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:55:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:55:37,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:55:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:55:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:55:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:55:37,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-22 22:55:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:55:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-08-22 22:55:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:55:37,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-08-22 22:55:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:55:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 538 proven. 99 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2020-08-22 22:55:38,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161616949] [2020-08-22 22:55:38,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:55:38,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:55:38,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724172990] [2020-08-22 22:55:38,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:55:38,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:55:38,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:55:38,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:55:38,406 INFO L87 Difference]: Start difference. First operand 90156 states and 108505 transitions. Second operand 7 states. [2020-08-22 22:55:54,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:55:54,812 INFO L93 Difference]: Finished difference Result 180515 states and 217239 transitions. [2020-08-22 22:55:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:55:54,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 687 [2020-08-22 22:55:54,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:55:55,096 INFO L225 Difference]: With dead ends: 180515 [2020-08-22 22:55:55,096 INFO L226 Difference]: Without dead ends: 90571 [2020-08-22 22:55:55,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:55:55,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90571 states. [2020-08-22 22:56:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90571 to 89915. [2020-08-22 22:56:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89915 states. [2020-08-22 22:56:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89915 states to 89915 states and 106190 transitions. [2020-08-22 22:56:11,308 INFO L78 Accepts]: Start accepts. Automaton has 89915 states and 106190 transitions. Word has length 687 [2020-08-22 22:56:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:56:11,308 INFO L479 AbstractCegarLoop]: Abstraction has 89915 states and 106190 transitions. [2020-08-22 22:56:11,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:56:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 89915 states and 106190 transitions. [2020-08-22 22:56:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-08-22 22:56:11,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:56:11,428 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:56:11,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 22:56:11,428 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:56:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:56:11,428 INFO L82 PathProgramCache]: Analyzing trace with hash 331157881, now seen corresponding path program 1 times [2020-08-22 22:56:11,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:56:11,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978765593] [2020-08-22 22:56:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:56:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:11,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:56:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:11,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:56:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:11,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 22:56:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:11,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-22 22:56:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:11,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-08-22 22:56:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:11,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-08-22 22:56:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:11,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2020-08-22 22:56:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 494 proven. 603 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2020-08-22 22:56:12,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978765593] [2020-08-22 22:56:12,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:56:12,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:56:12,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818853201] [2020-08-22 22:56:12,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:56:12,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:56:12,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:56:12,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:56:12,423 INFO L87 Difference]: Start difference. First operand 89915 states and 106190 transitions. Second operand 10 states. [2020-08-22 22:56:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:56:32,711 INFO L93 Difference]: Finished difference Result 189476 states and 224194 transitions. [2020-08-22 22:56:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 22:56:32,712 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 791 [2020-08-22 22:56:32,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:56:33,035 INFO L225 Difference]: With dead ends: 189476 [2020-08-22 22:56:33,035 INFO L226 Difference]: Without dead ends: 102937 [2020-08-22 22:56:33,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-22 22:56:33,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102937 states. [2020-08-22 22:56:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102937 to 100311. [2020-08-22 22:56:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100311 states. [2020-08-22 22:56:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100311 states to 100311 states and 118451 transitions. [2020-08-22 22:56:50,972 INFO L78 Accepts]: Start accepts. Automaton has 100311 states and 118451 transitions. Word has length 791 [2020-08-22 22:56:50,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:56:50,972 INFO L479 AbstractCegarLoop]: Abstraction has 100311 states and 118451 transitions. [2020-08-22 22:56:50,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:56:50,972 INFO L276 IsEmpty]: Start isEmpty. Operand 100311 states and 118451 transitions. [2020-08-22 22:56:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-08-22 22:56:51,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:56:51,089 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:56:51,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 22:56:51,090 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:56:51,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:56:51,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1570166223, now seen corresponding path program 1 times [2020-08-22 22:56:51,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:56:51,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013904821] [2020-08-22 22:56:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:56:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:56:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:51,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:56:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:56:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:51,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 22:56:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:51,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-08-22 22:56:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:51,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-08-22 22:56:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:51,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-22 22:56:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:56:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1797 backedges. 267 proven. 16 refuted. 0 times theorem prover too weak. 1514 trivial. 0 not checked. [2020-08-22 22:56:51,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013904821] [2020-08-22 22:56:51,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:56:51,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 22:56:51,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159154300] [2020-08-22 22:56:51,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:56:51,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:56:51,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:56:51,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:56:51,908 INFO L87 Difference]: Start difference. First operand 100311 states and 118451 transitions. Second operand 5 states. [2020-08-22 22:57:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:57:07,448 INFO L93 Difference]: Finished difference Result 197168 states and 233018 transitions. [2020-08-22 22:57:07,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:57:07,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 802 [2020-08-22 22:57:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:57:07,775 INFO L225 Difference]: With dead ends: 197168 [2020-08-22 22:57:07,775 INFO L226 Difference]: Without dead ends: 100237 [2020-08-22 22:57:07,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:57:07,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100237 states. [2020-08-22 22:57:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100237 to 100109. [2020-08-22 22:57:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100109 states. [2020-08-22 22:57:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100109 states to 100109 states and 118171 transitions. [2020-08-22 22:57:26,176 INFO L78 Accepts]: Start accepts. Automaton has 100109 states and 118171 transitions. Word has length 802 [2020-08-22 22:57:26,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:57:26,176 INFO L479 AbstractCegarLoop]: Abstraction has 100109 states and 118171 transitions. [2020-08-22 22:57:26,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:57:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 100109 states and 118171 transitions. [2020-08-22 22:57:26,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-08-22 22:57:26,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:57:26,305 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:57:26,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 22:57:26,305 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:57:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:57:26,306 INFO L82 PathProgramCache]: Analyzing trace with hash -293819967, now seen corresponding path program 1 times [2020-08-22 22:57:26,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:57:26,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952537427] [2020-08-22 22:57:26,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:57:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:57:26,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:57:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:57:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:57:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:57:26,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 22:57:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:57:26,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 22:57:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:57:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 22:57:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:57:26,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-08-22 22:57:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:57:26,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-08-22 22:57:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:57:26,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2020-08-22 22:57:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:57:27,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2250 backedges. 625 proven. 257 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2020-08-22 22:57:27,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952537427] [2020-08-22 22:57:27,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:57:27,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 22:57:27,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296783315] [2020-08-22 22:57:27,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:57:27,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:57:27,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:57:27,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:57:27,172 INFO L87 Difference]: Start difference. First operand 100109 states and 118171 transitions. Second operand 7 states. [2020-08-22 22:57:45,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:57:45,932 INFO L93 Difference]: Finished difference Result 209414 states and 247428 transitions. [2020-08-22 22:57:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:57:45,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 814 [2020-08-22 22:57:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:57:46,255 INFO L225 Difference]: With dead ends: 209414 [2020-08-22 22:57:46,255 INFO L226 Difference]: Without dead ends: 109716 [2020-08-22 22:57:46,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:57:46,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109716 states. [2020-08-22 22:58:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109716 to 105315. [2020-08-22 22:58:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105315 states. [2020-08-22 22:58:05,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105315 states to 105315 states and 123007 transitions. [2020-08-22 22:58:05,851 INFO L78 Accepts]: Start accepts. Automaton has 105315 states and 123007 transitions. Word has length 814 [2020-08-22 22:58:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:58:05,851 INFO L479 AbstractCegarLoop]: Abstraction has 105315 states and 123007 transitions. [2020-08-22 22:58:05,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:58:05,851 INFO L276 IsEmpty]: Start isEmpty. Operand 105315 states and 123007 transitions. [2020-08-22 22:58:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-08-22 22:58:05,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:58:05,970 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:58:05,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-22 22:58:05,970 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:58:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:58:05,971 INFO L82 PathProgramCache]: Analyzing trace with hash -228854500, now seen corresponding path program 1 times [2020-08-22 22:58:05,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:58:05,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124273017] [2020-08-22 22:58:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:58:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:58:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:06,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:58:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:06,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:58:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:06,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-22 22:58:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:06,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-08-22 22:58:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:06,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-08-22 22:58:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:06,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2020-08-22 22:58:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 539 proven. 308 refuted. 0 times theorem prover too weak. 1063 trivial. 0 not checked. [2020-08-22 22:58:07,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124273017] [2020-08-22 22:58:07,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:58:07,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 22:58:07,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011001152] [2020-08-22 22:58:07,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:58:07,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:58:07,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:58:07,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:58:07,184 INFO L87 Difference]: Start difference. First operand 105315 states and 123007 transitions. Second operand 11 states. [2020-08-22 22:58:08,031 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-08-22 22:58:09,981 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-08-22 22:58:11,621 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-08-22 22:58:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:58:30,491 INFO L93 Difference]: Finished difference Result 206706 states and 241795 transitions. [2020-08-22 22:58:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 22:58:30,492 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 814 [2020-08-22 22:58:30,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:58:30,814 INFO L225 Difference]: With dead ends: 206706 [2020-08-22 22:58:30,814 INFO L226 Difference]: Without dead ends: 105385 [2020-08-22 22:58:30,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 22:58:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105385 states. [2020-08-22 22:58:52,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105385 to 105106. [2020-08-22 22:58:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105106 states. [2020-08-22 22:58:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105106 states to 105106 states and 122536 transitions. [2020-08-22 22:58:52,401 INFO L78 Accepts]: Start accepts. Automaton has 105106 states and 122536 transitions. Word has length 814 [2020-08-22 22:58:52,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:58:52,402 INFO L479 AbstractCegarLoop]: Abstraction has 105106 states and 122536 transitions. [2020-08-22 22:58:52,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:58:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand 105106 states and 122536 transitions. [2020-08-22 22:58:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-08-22 22:58:52,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:58:52,508 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:58:52,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-22 22:58:52,509 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:58:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:58:52,509 INFO L82 PathProgramCache]: Analyzing trace with hash -587128004, now seen corresponding path program 1 times [2020-08-22 22:58:52,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:58:52,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478757745] [2020-08-22 22:58:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:58:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:52,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:58:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:52,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:58:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:52,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 22:58:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 22:58:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:52,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-08-22 22:58:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:52,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-08-22 22:58:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:52,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-08-22 22:58:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:58:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1797 backedges. 597 proven. 198 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2020-08-22 22:58:53,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478757745] [2020-08-22 22:58:53,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:58:53,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:58:53,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130528388] [2020-08-22 22:58:53,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:58:53,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:58:53,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:58:53,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:58:53,100 INFO L87 Difference]: Start difference. First operand 105106 states and 122536 transitions. Second operand 8 states. [2020-08-22 22:59:15,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:15,562 INFO L93 Difference]: Finished difference Result 203794 states and 237246 transitions. [2020-08-22 22:59:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 22:59:15,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 818 [2020-08-22 22:59:15,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:15,884 INFO L225 Difference]: With dead ends: 203794 [2020-08-22 22:59:15,884 INFO L226 Difference]: Without dead ends: 99099 [2020-08-22 22:59:16,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-22 22:59:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99099 states. [2020-08-22 22:59:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99099 to 96259. [2020-08-22 22:59:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96259 states. [2020-08-22 22:59:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96259 states to 96259 states and 110438 transitions. [2020-08-22 22:59:36,616 INFO L78 Accepts]: Start accepts. Automaton has 96259 states and 110438 transitions. Word has length 818 [2020-08-22 22:59:36,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:36,616 INFO L479 AbstractCegarLoop]: Abstraction has 96259 states and 110438 transitions. [2020-08-22 22:59:36,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:59:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand 96259 states and 110438 transitions. [2020-08-22 22:59:36,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2020-08-22 22:59:36,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:36,741 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:59:36,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-22 22:59:36,741 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:36,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:36,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1318803644, now seen corresponding path program 1 times [2020-08-22 22:59:36,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:36,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821291921] [2020-08-22 22:59:36,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:36,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 22:59:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 22:59:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-08-22 22:59:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-08-22 22:59:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2020-08-22 22:59:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2020-08-22 22:59:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 757 proven. 367 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2020-08-22 22:59:37,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821291921] [2020-08-22 22:59:37,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:59:37,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 22:59:37,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094096511] [2020-08-22 22:59:37,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:59:37,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:37,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:59:37,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:59:37,831 INFO L87 Difference]: Start difference. First operand 96259 states and 110438 transitions. Second operand 9 states. [2020-08-22 23:00:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:05,945 INFO L93 Difference]: Finished difference Result 215642 states and 247907 transitions. [2020-08-22 23:00:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 23:00:05,946 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 855 [2020-08-22 23:00:05,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:06,330 INFO L225 Difference]: With dead ends: 215642 [2020-08-22 23:00:06,331 INFO L226 Difference]: Without dead ends: 125600 [2020-08-22 23:00:06,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-08-22 23:00:06,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125600 states. [2020-08-22 23:00:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125600 to 121977. [2020-08-22 23:00:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121977 states. [2020-08-22 23:00:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121977 states to 121977 states and 139389 transitions. [2020-08-22 23:00:31,622 INFO L78 Accepts]: Start accepts. Automaton has 121977 states and 139389 transitions. Word has length 855 [2020-08-22 23:00:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:31,622 INFO L479 AbstractCegarLoop]: Abstraction has 121977 states and 139389 transitions. [2020-08-22 23:00:31,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 23:00:31,623 INFO L276 IsEmpty]: Start isEmpty. Operand 121977 states and 139389 transitions. [2020-08-22 23:00:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2020-08-22 23:00:31,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:31,743 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:31,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-22 23:00:31,744 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:31,744 INFO L82 PathProgramCache]: Analyzing trace with hash 28463548, now seen corresponding path program 1 times [2020-08-22 23:00:31,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:31,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902658684] [2020-08-22 23:00:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:31,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 23:00:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:32,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 23:00:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:32,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-08-22 23:00:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-08-22 23:00:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:32,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-22 23:00:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:32,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2020-08-22 23:00:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 839 [2020-08-22 23:00:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:32,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 981 [2020-08-22 23:00:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:32,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1092 [2020-08-22 23:00:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4379 backedges. 958 proven. 1001 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-08-22 23:00:33,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902658684] [2020-08-22 23:00:33,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:00:33,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 23:00:33,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299247700] [2020-08-22 23:00:33,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 23:00:33,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:33,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 23:00:33,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 23:00:33,321 INFO L87 Difference]: Start difference. First operand 121977 states and 139389 transitions. Second operand 9 states. [2020-08-22 23:01:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:01,089 INFO L93 Difference]: Finished difference Result 245240 states and 280670 transitions. [2020-08-22 23:01:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 23:01:01,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1240 [2020-08-22 23:01:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:01,465 INFO L225 Difference]: With dead ends: 245240 [2020-08-22 23:01:01,466 INFO L226 Difference]: Without dead ends: 129480 [2020-08-22 23:01:01,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-08-22 23:01:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129480 states. [2020-08-22 23:01:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129480 to 126879. [2020-08-22 23:01:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126879 states. [2020-08-22 23:01:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126879 states to 126879 states and 144968 transitions. [2020-08-22 23:01:28,558 INFO L78 Accepts]: Start accepts. Automaton has 126879 states and 144968 transitions. Word has length 1240 [2020-08-22 23:01:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:28,558 INFO L479 AbstractCegarLoop]: Abstraction has 126879 states and 144968 transitions. [2020-08-22 23:01:28,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 23:01:28,559 INFO L276 IsEmpty]: Start isEmpty. Operand 126879 states and 144968 transitions. [2020-08-22 23:01:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1259 [2020-08-22 23:01:28,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:28,685 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:28,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-22 23:01:28,685 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:28,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:28,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1164938594, now seen corresponding path program 1 times [2020-08-22 23:01:28,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:28,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638738408] [2020-08-22 23:01:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 23:01:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:28,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 23:01:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:28,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-08-22 23:01:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-08-22 23:01:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:29,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2020-08-22 23:01:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2020-08-22 23:01:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:29,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-08-22 23:01:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:29,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 999 [2020-08-22 23:01:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1110 [2020-08-22 23:01:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4498 backedges. 728 proven. 655 refuted. 0 times theorem prover too weak. 3115 trivial. 0 not checked. [2020-08-22 23:01:30,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638738408] [2020-08-22 23:01:30,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:01:30,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 23:01:30,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027226917] [2020-08-22 23:01:30,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 23:01:30,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:30,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 23:01:30,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 23:01:30,026 INFO L87 Difference]: Start difference. First operand 126879 states and 144968 transitions. Second operand 7 states. [2020-08-22 23:01:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:45,429 INFO L93 Difference]: Finished difference Result 185408 states and 210638 transitions. [2020-08-22 23:01:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 23:01:45,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1258 [2020-08-22 23:01:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:45,486 INFO L225 Difference]: With dead ends: 185408 [2020-08-22 23:01:45,486 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:01:46,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 23:01:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:01:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:01:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:01:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:01:46,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1258 [2020-08-22 23:01:46,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:46,219 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:01:46,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 23:01:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:01:46,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:01:46,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-22 23:01:46,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.