/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:32:11,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:32:11,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:32:11,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 17:32:11,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:32:11,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:32:11,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:32:11,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:32:11,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:32:11,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:32:11,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:32:11,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:32:11,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:32:11,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:32:11,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:32:11,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:32:11,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:32:11,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:32:11,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:32:11,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:32:11,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:32:11,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:32:11,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:32:11,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:32:11,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:32:11,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:32:11,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:32:11,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:32:11,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:32:11,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:32:11,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:32:11,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:32:11,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:32:11,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:32:11,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:32:11,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:32:11,639 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:32:11,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:32:11,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:32:11,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:32:11,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:32:11,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:32:11,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:32:11,641 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:32:12,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:32:12,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:32:12,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:32:12,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:32:12,125 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:32:12,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-04 17:32:12,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8b8d454a/e87ae240722543b7986d654bd97b8303/FLAG85e1ae155 [2020-09-04 17:32:12,848 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:32:12,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-04 17:32:12,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8b8d454a/e87ae240722543b7986d654bd97b8303/FLAG85e1ae155 [2020-09-04 17:32:13,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8b8d454a/e87ae240722543b7986d654bd97b8303 [2020-09-04 17:32:13,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:32:13,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:32:13,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:32:13,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:32:13,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:32:13,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:32:13" (1/1) ... [2020-09-04 17:32:13,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6f5b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:13, skipping insertion in model container [2020-09-04 17:32:13,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:32:13" (1/1) ... [2020-09-04 17:32:13,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:32:13,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:32:13,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:32:13,867 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:32:14,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:32:14,200 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:32:14,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:14 WrapperNode [2020-09-04 17:32:14,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:32:14,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:32:14,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:32:14,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:32:14,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:14" (1/1) ... [2020-09-04 17:32:14,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:14" (1/1) ... [2020-09-04 17:32:14,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:14" (1/1) ... [2020-09-04 17:32:14,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:14" (1/1) ... [2020-09-04 17:32:14,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:14" (1/1) ... [2020-09-04 17:32:14,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:14" (1/1) ... [2020-09-04 17:32:14,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:14" (1/1) ... [2020-09-04 17:32:14,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:32:14,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:32:14,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:32:14,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:32:14,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:32:14,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:32:14,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:32:14,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-04 17:32:14,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:32:14,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-04 17:32:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:32:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:32:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 17:32:14,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:32:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:32:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:32:17,231 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:32:17,231 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:32:17,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:32:17 BoogieIcfgContainer [2020-09-04 17:32:17,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:32:17,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:32:17,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:32:17,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:32:17,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:32:13" (1/3) ... [2020-09-04 17:32:17,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399bc205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:32:17, skipping insertion in model container [2020-09-04 17:32:17,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:32:14" (2/3) ... [2020-09-04 17:32:17,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399bc205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:32:17, skipping insertion in model container [2020-09-04 17:32:17,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:32:17" (3/3) ... [2020-09-04 17:32:17,253 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-09-04 17:32:17,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:32:17,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:32:17,301 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:32:17,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:32:17,331 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:32:17,331 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:32:17,331 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:32:17,331 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:32:17,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:32:17,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:32:17,332 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:32:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-04 17:32:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-04 17:32:17,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:32:17,380 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] [2020-09-04 17:32:17,381 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:32:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:32:17,389 INFO L82 PathProgramCache]: Analyzing trace with hash -123889732, now seen corresponding path program 1 times [2020-09-04 17:32:17,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:32:17,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866229619] [2020-09-04 17:32:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:32:17,471 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:32:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:32:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:32:17,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866229619] [2020-09-04 17:32:17,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:32:17,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:32:17,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310803575] [2020-09-04 17:32:17,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:32:17,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:32:17,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:32:17,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:32:17,952 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-04 17:32:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:32:23,676 INFO L93 Difference]: Finished difference Result 2361 states and 3156 transitions. [2020-09-04 17:32:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 17:32:23,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-09-04 17:32:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:32:23,724 INFO L225 Difference]: With dead ends: 2361 [2020-09-04 17:32:23,724 INFO L226 Difference]: Without dead ends: 1487 [2020-09-04 17:32:23,739 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 [2020-09-04 17:32:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-09-04 17:32:23,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1155. [2020-09-04 17:32:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-09-04 17:32:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1484 transitions. [2020-09-04 17:32:23,950 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1484 transitions. Word has length 55 [2020-09-04 17:32:23,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:32:23,951 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1484 transitions. [2020-09-04 17:32:23,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:32:23,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1484 transitions. [2020-09-04 17:32:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-04 17:32:23,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:32:23,962 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] [2020-09-04 17:32:23,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:32:23,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:32:23,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:32:23,963 INFO L82 PathProgramCache]: Analyzing trace with hash 736411249, now seen corresponding path program 1 times [2020-09-04 17:32:23,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:32:23,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232213679] [2020-09-04 17:32:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:32:24,050 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:32:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:32:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:24,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:32:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:32:24,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232213679] [2020-09-04 17:32:24,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:32:24,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:32:24,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764512976] [2020-09-04 17:32:24,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:32:24,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:32:24,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:32:24,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:32:24,445 INFO L87 Difference]: Start difference. First operand 1155 states and 1484 transitions. Second operand 7 states. [2020-09-04 17:32:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:32:29,723 INFO L93 Difference]: Finished difference Result 3082 states and 4163 transitions. [2020-09-04 17:32:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 17:32:29,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-09-04 17:32:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:32:29,750 INFO L225 Difference]: With dead ends: 3082 [2020-09-04 17:32:29,751 INFO L226 Difference]: Without dead ends: 1944 [2020-09-04 17:32:29,760 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 [2020-09-04 17:32:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-09-04 17:32:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1847. [2020-09-04 17:32:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1847 states. [2020-09-04 17:32:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2324 transitions. [2020-09-04 17:32:29,970 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2324 transitions. Word has length 136 [2020-09-04 17:32:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:32:29,973 INFO L479 AbstractCegarLoop]: Abstraction has 1847 states and 2324 transitions. [2020-09-04 17:32:29,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:32:29,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2324 transitions. [2020-09-04 17:32:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-04 17:32:29,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:32:29,984 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] [2020-09-04 17:32:29,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:32:29,985 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:32:29,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:32:29,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1086264008, now seen corresponding path program 1 times [2020-09-04 17:32:29,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:32:29,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811359420] [2020-09-04 17:32:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:32:30,019 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:32:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:30,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:32:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:30,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:32:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:32:30,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811359420] [2020-09-04 17:32:30,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:32:30,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:32:30,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405774476] [2020-09-04 17:32:30,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:32:30,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:32:30,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:32:30,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:32:30,405 INFO L87 Difference]: Start difference. First operand 1847 states and 2324 transitions. Second operand 7 states. [2020-09-04 17:32:35,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:32:35,332 INFO L93 Difference]: Finished difference Result 4824 states and 6321 transitions. [2020-09-04 17:32:35,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 17:32:35,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-04 17:32:35,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:32:35,357 INFO L225 Difference]: With dead ends: 4824 [2020-09-04 17:32:35,358 INFO L226 Difference]: Without dead ends: 2994 [2020-09-04 17:32:35,366 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 [2020-09-04 17:32:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-09-04 17:32:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2913. [2020-09-04 17:32:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2913 states. [2020-09-04 17:32:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3624 transitions. [2020-09-04 17:32:35,632 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3624 transitions. Word has length 144 [2020-09-04 17:32:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:32:35,633 INFO L479 AbstractCegarLoop]: Abstraction has 2913 states and 3624 transitions. [2020-09-04 17:32:35,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:32:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3624 transitions. [2020-09-04 17:32:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-04 17:32:35,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:32:35,641 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] [2020-09-04 17:32:35,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:32:35,642 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:32:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:32:35,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1034486148, now seen corresponding path program 1 times [2020-09-04 17:32:35,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:32:35,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720325224] [2020-09-04 17:32:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:32:35,678 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:32:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:35,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:32:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:35,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:32:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:35,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 17:32:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:32:36,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720325224] [2020-09-04 17:32:36,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:32:36,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 17:32:36,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321083769] [2020-09-04 17:32:36,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 17:32:36,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:32:36,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 17:32:36,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:32:36,150 INFO L87 Difference]: Start difference. First operand 2913 states and 3624 transitions. Second operand 8 states. [2020-09-04 17:32:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:32:41,060 INFO L93 Difference]: Finished difference Result 5476 states and 6930 transitions. [2020-09-04 17:32:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 17:32:41,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2020-09-04 17:32:41,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:32:41,084 INFO L225 Difference]: With dead ends: 5476 [2020-09-04 17:32:41,084 INFO L226 Difference]: Without dead ends: 2974 [2020-09-04 17:32:41,093 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 [2020-09-04 17:32:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-09-04 17:32:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2917. [2020-09-04 17:32:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2917 states. [2020-09-04 17:32:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3623 transitions. [2020-09-04 17:32:41,420 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3623 transitions. Word has length 220 [2020-09-04 17:32:41,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:32:41,422 INFO L479 AbstractCegarLoop]: Abstraction has 2917 states and 3623 transitions. [2020-09-04 17:32:41,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 17:32:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3623 transitions. [2020-09-04 17:32:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-04 17:32:41,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:32:41,428 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] [2020-09-04 17:32:41,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:32:41,429 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:32:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:32:41,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1151458182, now seen corresponding path program 1 times [2020-09-04 17:32:41,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:32:41,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439650823] [2020-09-04 17:32:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:32:41,486 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:32:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:32:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:41,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:32:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:41,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 17:32:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:32:41,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439650823] [2020-09-04 17:32:41,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:32:41,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 17:32:41,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901965619] [2020-09-04 17:32:41,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 17:32:41,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:32:41,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 17:32:41,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:32:41,921 INFO L87 Difference]: Start difference. First operand 2917 states and 3623 transitions. Second operand 6 states. [2020-09-04 17:32:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:32:46,135 INFO L93 Difference]: Finished difference Result 7172 states and 9353 transitions. [2020-09-04 17:32:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 17:32:46,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 269 [2020-09-04 17:32:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:32:46,174 INFO L225 Difference]: With dead ends: 7172 [2020-09-04 17:32:46,174 INFO L226 Difference]: Without dead ends: 4666 [2020-09-04 17:32:46,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:32:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2020-09-04 17:32:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4601. [2020-09-04 17:32:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2020-09-04 17:32:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 5915 transitions. [2020-09-04 17:32:46,647 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 5915 transitions. Word has length 269 [2020-09-04 17:32:46,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:32:46,648 INFO L479 AbstractCegarLoop]: Abstraction has 4601 states and 5915 transitions. [2020-09-04 17:32:46,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 17:32:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 5915 transitions. [2020-09-04 17:32:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-04 17:32:46,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:32:46,656 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] [2020-09-04 17:32:46,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 17:32:46,657 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:32:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:32:46,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1320429082, now seen corresponding path program 1 times [2020-09-04 17:32:46,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:32:46,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736197701] [2020-09-04 17:32:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:32:46,719 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:32:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:46,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:32:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:46,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:32:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:32:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:32:47,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736197701] [2020-09-04 17:32:47,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:32:47,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:32:47,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899054475] [2020-09-04 17:32:47,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:32:47,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:32:47,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:32:47,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:32:47,162 INFO L87 Difference]: Start difference. First operand 4601 states and 5915 transitions. Second operand 5 states. [2020-09-04 17:32:52,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:32:52,524 INFO L93 Difference]: Finished difference Result 9909 states and 13093 transitions. [2020-09-04 17:32:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:32:52,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2020-09-04 17:32:52,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:32:52,565 INFO L225 Difference]: With dead ends: 9909 [2020-09-04 17:32:52,566 INFO L226 Difference]: Without dead ends: 5719 [2020-09-04 17:32:52,584 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 [2020-09-04 17:32:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5719 states. [2020-09-04 17:32:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5719 to 5662. [2020-09-04 17:32:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5662 states. [2020-09-04 17:32:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 7396 transitions. [2020-09-04 17:32:53,077 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 7396 transitions. Word has length 277 [2020-09-04 17:32:53,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:32:53,078 INFO L479 AbstractCegarLoop]: Abstraction has 5662 states and 7396 transitions. [2020-09-04 17:32:53,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:32:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 7396 transitions. [2020-09-04 17:32:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-04 17:32:53,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:32:53,086 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] [2020-09-04 17:32:53,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 17:32:53,087 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:32:53,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:32:53,087 INFO L82 PathProgramCache]: Analyzing trace with hash -93697981, now seen corresponding path program 1 times [2020-09-04 17:32:53,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:32:53,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616200982] [2020-09-04 17:32:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:32:53,115 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:32:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:32:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:53,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:32:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:53,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:32:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:32:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:32:53,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616200982] [2020-09-04 17:32:53,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:32:53,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:32:53,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131349212] [2020-09-04 17:32:53,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:32:53,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:32:53,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:32:53,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:32:53,637 INFO L87 Difference]: Start difference. First operand 5662 states and 7396 transitions. Second operand 9 states. [2020-09-04 17:33:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:33:01,741 INFO L93 Difference]: Finished difference Result 14775 states and 20627 transitions. [2020-09-04 17:33:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 17:33:01,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 279 [2020-09-04 17:33:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:33:01,810 INFO L225 Difference]: With dead ends: 14775 [2020-09-04 17:33:01,811 INFO L226 Difference]: Without dead ends: 9524 [2020-09-04 17:33:01,834 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 [2020-09-04 17:33:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9524 states. [2020-09-04 17:33:02,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9524 to 9230. [2020-09-04 17:33:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9230 states. [2020-09-04 17:33:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 12961 transitions. [2020-09-04 17:33:02,807 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 12961 transitions. Word has length 279 [2020-09-04 17:33:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:33:02,808 INFO L479 AbstractCegarLoop]: Abstraction has 9230 states and 12961 transitions. [2020-09-04 17:33:02,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:33:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 12961 transitions. [2020-09-04 17:33:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-09-04 17:33:02,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:33:02,815 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] [2020-09-04 17:33:02,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 17:33:02,816 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:33:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:33:02,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1780607293, now seen corresponding path program 1 times [2020-09-04 17:33:02,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:33:02,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745022893] [2020-09-04 17:33:02,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:33:02,872 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:33:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:33:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:33:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:33:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:33:03,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745022893] [2020-09-04 17:33:03,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:33:03,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:33:03,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055267098] [2020-09-04 17:33:03,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:33:03,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:33:03,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:33:03,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:33:03,340 INFO L87 Difference]: Start difference. First operand 9230 states and 12961 transitions. Second operand 9 states. [2020-09-04 17:33:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:33:14,531 INFO L93 Difference]: Finished difference Result 29358 states and 43858 transitions. [2020-09-04 17:33:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 17:33:14,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 285 [2020-09-04 17:33:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:33:14,681 INFO L225 Difference]: With dead ends: 29358 [2020-09-04 17:33:14,682 INFO L226 Difference]: Without dead ends: 20539 [2020-09-04 17:33:14,730 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 [2020-09-04 17:33:14,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20539 states. [2020-09-04 17:33:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20539 to 20239. [2020-09-04 17:33:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20239 states. [2020-09-04 17:33:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20239 states to 20239 states and 28166 transitions. [2020-09-04 17:33:17,747 INFO L78 Accepts]: Start accepts. Automaton has 20239 states and 28166 transitions. Word has length 285 [2020-09-04 17:33:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:33:17,748 INFO L479 AbstractCegarLoop]: Abstraction has 20239 states and 28166 transitions. [2020-09-04 17:33:17,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:33:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 20239 states and 28166 transitions. [2020-09-04 17:33:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-09-04 17:33:17,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:33:17,757 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] [2020-09-04 17:33:17,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 17:33:17,758 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:33:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:33:17,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1312144757, now seen corresponding path program 1 times [2020-09-04 17:33:17,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:33:17,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869981326] [2020-09-04 17:33:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:33:17,807 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:33:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:18,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:33:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:18,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:33:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:18,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:33:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:33:18,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869981326] [2020-09-04 17:33:18,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:33:18,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:33:18,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365455142] [2020-09-04 17:33:18,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:33:18,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:33:18,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:33:18,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:33:18,344 INFO L87 Difference]: Start difference. First operand 20239 states and 28166 transitions. Second operand 5 states. [2020-09-04 17:33:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:33:23,946 INFO L93 Difference]: Finished difference Result 45946 states and 64801 transitions. [2020-09-04 17:33:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:33:23,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2020-09-04 17:33:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:33:24,094 INFO L225 Difference]: With dead ends: 45946 [2020-09-04 17:33:24,094 INFO L226 Difference]: Without dead ends: 26118 [2020-09-04 17:33:24,156 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 [2020-09-04 17:33:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26118 states. [2020-09-04 17:33:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26118 to 25249. [2020-09-04 17:33:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25249 states. [2020-09-04 17:33:26,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25249 states to 25249 states and 35010 transitions. [2020-09-04 17:33:26,362 INFO L78 Accepts]: Start accepts. Automaton has 25249 states and 35010 transitions. Word has length 301 [2020-09-04 17:33:26,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:33:26,363 INFO L479 AbstractCegarLoop]: Abstraction has 25249 states and 35010 transitions. [2020-09-04 17:33:26,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:33:26,363 INFO L276 IsEmpty]: Start isEmpty. Operand 25249 states and 35010 transitions. [2020-09-04 17:33:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-09-04 17:33:26,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:33:26,374 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] [2020-09-04 17:33:26,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 17:33:26,374 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:33:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:33:26,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1665784485, now seen corresponding path program 1 times [2020-09-04 17:33:26,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:33:26,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224543145] [2020-09-04 17:33:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:33:26,425 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:33:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:26,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:33:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:26,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:33:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:26,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:33:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:33:26,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224543145] [2020-09-04 17:33:26,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:33:26,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:33:26,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128891489] [2020-09-04 17:33:26,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:33:26,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:33:26,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:33:26,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:33:26,807 INFO L87 Difference]: Start difference. First operand 25249 states and 35010 transitions. Second operand 7 states. [2020-09-04 17:33:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:33:35,003 INFO L93 Difference]: Finished difference Result 54246 states and 75727 transitions. [2020-09-04 17:33:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 17:33:35,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-09-04 17:33:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:33:35,160 INFO L225 Difference]: With dead ends: 54246 [2020-09-04 17:33:35,160 INFO L226 Difference]: Without dead ends: 29408 [2020-09-04 17:33:35,235 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 [2020-09-04 17:33:35,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29408 states. [2020-09-04 17:33:37,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29408 to 29104. [2020-09-04 17:33:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29104 states. [2020-09-04 17:33:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29104 states to 29104 states and 39294 transitions. [2020-09-04 17:33:37,376 INFO L78 Accepts]: Start accepts. Automaton has 29104 states and 39294 transitions. Word has length 312 [2020-09-04 17:33:37,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:33:37,377 INFO L479 AbstractCegarLoop]: Abstraction has 29104 states and 39294 transitions. [2020-09-04 17:33:37,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:33:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 29104 states and 39294 transitions. [2020-09-04 17:33:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-09-04 17:33:37,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:33:37,388 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] [2020-09-04 17:33:37,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 17:33:37,389 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:33:37,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:33:37,389 INFO L82 PathProgramCache]: Analyzing trace with hash 33622082, now seen corresponding path program 1 times [2020-09-04 17:33:37,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:33:37,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865567993] [2020-09-04 17:33:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:33:37,419 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:33:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:33:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:37,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:33:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-09-04 17:33:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:33:37,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865567993] [2020-09-04 17:33:37,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:33:37,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 17:33:37,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107040455] [2020-09-04 17:33:37,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 17:33:37,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:33:37,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 17:33:37,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:33:37,874 INFO L87 Difference]: Start difference. First operand 29104 states and 39294 transitions. Second operand 6 states. [2020-09-04 17:33:46,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:33:46,699 INFO L93 Difference]: Finished difference Result 65475 states and 89426 transitions. [2020-09-04 17:33:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 17:33:46,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 338 [2020-09-04 17:33:46,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:33:46,937 INFO L225 Difference]: With dead ends: 65475 [2020-09-04 17:33:46,937 INFO L226 Difference]: Without dead ends: 36782 [2020-09-04 17:33:47,025 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 [2020-09-04 17:33:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36782 states. [2020-09-04 17:33:51,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36782 to 35711. [2020-09-04 17:33:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35711 states. [2020-09-04 17:33:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35711 states to 35711 states and 48074 transitions. [2020-09-04 17:33:51,695 INFO L78 Accepts]: Start accepts. Automaton has 35711 states and 48074 transitions. Word has length 338 [2020-09-04 17:33:51,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:33:51,696 INFO L479 AbstractCegarLoop]: Abstraction has 35711 states and 48074 transitions. [2020-09-04 17:33:51,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 17:33:51,696 INFO L276 IsEmpty]: Start isEmpty. Operand 35711 states and 48074 transitions. [2020-09-04 17:33:51,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-09-04 17:33:51,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:33:51,719 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] [2020-09-04 17:33:51,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 17:33:51,719 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:33:51,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:33:51,719 INFO L82 PathProgramCache]: Analyzing trace with hash -32484685, now seen corresponding path program 1 times [2020-09-04 17:33:51,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:33:51,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946051128] [2020-09-04 17:33:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:33:51,745 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:33:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:33:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:51,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:33:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:33:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-09-04 17:33:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:33:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:33:52,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946051128] [2020-09-04 17:33:52,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:33:52,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:33:52,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609611317] [2020-09-04 17:33:52,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:33:52,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:33:52,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:33:52,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:33:52,218 INFO L87 Difference]: Start difference. First operand 35711 states and 48074 transitions. Second operand 7 states. [2020-09-04 17:33:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:33:58,519 INFO L93 Difference]: Finished difference Result 63740 states and 87072 transitions. [2020-09-04 17:33:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 17:33:58,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-09-04 17:33:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:33:58,672 INFO L225 Difference]: With dead ends: 63740 [2020-09-04 17:33:58,672 INFO L226 Difference]: Without dead ends: 28440 [2020-09-04 17:33:58,775 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 [2020-09-04 17:33:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28440 states. [2020-09-04 17:34:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28440 to 27787. [2020-09-04 17:34:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27787 states. [2020-09-04 17:34:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27787 states to 27787 states and 35028 transitions. [2020-09-04 17:34:02,821 INFO L78 Accepts]: Start accepts. Automaton has 27787 states and 35028 transitions. Word has length 397 [2020-09-04 17:34:02,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:34:02,822 INFO L479 AbstractCegarLoop]: Abstraction has 27787 states and 35028 transitions. [2020-09-04 17:34:02,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:34:02,822 INFO L276 IsEmpty]: Start isEmpty. Operand 27787 states and 35028 transitions. [2020-09-04 17:34:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-09-04 17:34:02,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:34:02,886 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] [2020-09-04 17:34:02,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 17:34:02,886 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:34:02,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:34:02,887 INFO L82 PathProgramCache]: Analyzing trace with hash -745953394, now seen corresponding path program 1 times [2020-09-04 17:34:02,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:34:02,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514804033] [2020-09-04 17:34:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:34:02,918 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:34:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:34:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:03,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:34:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:03,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:34:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:03,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-09-04 17:34:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-09-04 17:34:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:34:03,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514804033] [2020-09-04 17:34:03,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:34:03,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:34:03,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180012130] [2020-09-04 17:34:03,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:34:03,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:34:03,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:34:03,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:34:03,907 INFO L87 Difference]: Start difference. First operand 27787 states and 35028 transitions. Second operand 10 states. [2020-09-04 17:34:15,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:34:15,452 INFO L93 Difference]: Finished difference Result 60342 states and 76042 transitions. [2020-09-04 17:34:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 17:34:15,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 520 [2020-09-04 17:34:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:34:15,583 INFO L225 Difference]: With dead ends: 60342 [2020-09-04 17:34:15,583 INFO L226 Difference]: Without dead ends: 32966 [2020-09-04 17:34:15,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-09-04 17:34:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32966 states. [2020-09-04 17:34:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32966 to 32823. [2020-09-04 17:34:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32823 states. [2020-09-04 17:34:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32823 states to 32823 states and 40852 transitions. [2020-09-04 17:34:18,425 INFO L78 Accepts]: Start accepts. Automaton has 32823 states and 40852 transitions. Word has length 520 [2020-09-04 17:34:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:34:18,426 INFO L479 AbstractCegarLoop]: Abstraction has 32823 states and 40852 transitions. [2020-09-04 17:34:18,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:34:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 32823 states and 40852 transitions. [2020-09-04 17:34:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-09-04 17:34:18,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:34:18,470 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] [2020-09-04 17:34:18,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 17:34:18,471 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:34:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:34:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1473222243, now seen corresponding path program 1 times [2020-09-04 17:34:18,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:34:18,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445070293] [2020-09-04 17:34:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:34:18,510 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:34:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:18,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:34:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:18,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:34:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:18,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:34:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:18,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-09-04 17:34:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:18,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-09-04 17:34:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:34:19,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445070293] [2020-09-04 17:34:19,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:34:19,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:34:19,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583958033] [2020-09-04 17:34:19,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:34:19,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:34:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:34:19,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:34:19,147 INFO L87 Difference]: Start difference. First operand 32823 states and 40852 transitions. Second operand 9 states. [2020-09-04 17:34:31,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:34:31,294 INFO L93 Difference]: Finished difference Result 67653 states and 84287 transitions. [2020-09-04 17:34:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 17:34:31,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 534 [2020-09-04 17:34:31,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:34:31,414 INFO L225 Difference]: With dead ends: 67653 [2020-09-04 17:34:31,414 INFO L226 Difference]: Without dead ends: 35241 [2020-09-04 17:34:31,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-09-04 17:34:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35241 states. [2020-09-04 17:34:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35241 to 34896. [2020-09-04 17:34:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34896 states. [2020-09-04 17:34:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34896 states to 34896 states and 43196 transitions. [2020-09-04 17:34:34,758 INFO L78 Accepts]: Start accepts. Automaton has 34896 states and 43196 transitions. Word has length 534 [2020-09-04 17:34:34,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:34:34,759 INFO L479 AbstractCegarLoop]: Abstraction has 34896 states and 43196 transitions. [2020-09-04 17:34:34,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:34:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 34896 states and 43196 transitions. [2020-09-04 17:34:34,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-09-04 17:34:34,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:34:34,812 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] [2020-09-04 17:34:34,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 17:34:34,812 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:34:34,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:34:34,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1332091315, now seen corresponding path program 1 times [2020-09-04 17:34:34,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:34:34,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618784602] [2020-09-04 17:34:34,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:34:34,854 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:34:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:37,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:34:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:37,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:34:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:37,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 17:34:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 17:34:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-09-04 17:34:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:34:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:34:37,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618784602] [2020-09-04 17:34:37,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:34:37,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:34:37,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808477193] [2020-09-04 17:34:37,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:34:37,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:34:37,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:34:37,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:34:37,876 INFO L87 Difference]: Start difference. First operand 34896 states and 43196 transitions. Second operand 9 states. [2020-09-04 17:34:53,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:34:53,859 INFO L93 Difference]: Finished difference Result 87764 states and 109118 transitions. [2020-09-04 17:34:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 17:34:53,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 549 [2020-09-04 17:34:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:34:54,291 INFO L225 Difference]: With dead ends: 87764 [2020-09-04 17:34:54,291 INFO L226 Difference]: Without dead ends: 53279 [2020-09-04 17:34:54,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-09-04 17:34:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53279 states. [2020-09-04 17:35:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53279 to 52885. [2020-09-04 17:35:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52885 states. [2020-09-04 17:35:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52885 states to 52885 states and 65173 transitions. [2020-09-04 17:35:00,846 INFO L78 Accepts]: Start accepts. Automaton has 52885 states and 65173 transitions. Word has length 549 [2020-09-04 17:35:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:35:00,846 INFO L479 AbstractCegarLoop]: Abstraction has 52885 states and 65173 transitions. [2020-09-04 17:35:00,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:35:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 52885 states and 65173 transitions. [2020-09-04 17:35:00,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-09-04 17:35:00,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:35:00,901 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] [2020-09-04 17:35:00,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 17:35:00,902 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:35:00,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:35:00,902 INFO L82 PathProgramCache]: Analyzing trace with hash -750949808, now seen corresponding path program 1 times [2020-09-04 17:35:00,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:35:00,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71193936] [2020-09-04 17:35:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:35:00,945 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:35:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:35:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:01,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:35:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:01,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:35:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:01,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-09-04 17:35:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-04 17:35:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:35:01,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71193936] [2020-09-04 17:35:01,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:35:01,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:35:01,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686985139] [2020-09-04 17:35:01,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:35:01,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:35:01,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:35:01,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:35:01,749 INFO L87 Difference]: Start difference. First operand 52885 states and 65173 transitions. Second operand 10 states. [2020-09-04 17:35:18,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:35:18,295 INFO L93 Difference]: Finished difference Result 112604 states and 139293 transitions. [2020-09-04 17:35:18,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 17:35:18,296 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 576 [2020-09-04 17:35:18,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:35:18,515 INFO L225 Difference]: With dead ends: 112604 [2020-09-04 17:35:18,515 INFO L226 Difference]: Without dead ends: 62675 [2020-09-04 17:35:18,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2020-09-04 17:35:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62675 states. [2020-09-04 17:35:27,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62675 to 61284. [2020-09-04 17:35:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61284 states. [2020-09-04 17:35:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61284 states to 61284 states and 75348 transitions. [2020-09-04 17:35:27,812 INFO L78 Accepts]: Start accepts. Automaton has 61284 states and 75348 transitions. Word has length 576 [2020-09-04 17:35:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:35:27,812 INFO L479 AbstractCegarLoop]: Abstraction has 61284 states and 75348 transitions. [2020-09-04 17:35:27,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:35:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 61284 states and 75348 transitions. [2020-09-04 17:35:27,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-09-04 17:35:27,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:35:27,887 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] [2020-09-04 17:35:27,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 17:35:27,888 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:35:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:35:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1575497387, now seen corresponding path program 1 times [2020-09-04 17:35:27,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:35:27,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664047413] [2020-09-04 17:35:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:35:27,916 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:35:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:28,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:35:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:28,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:35:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:28,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:35:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-09-04 17:35:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:28,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-09-04 17:35:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:35:28,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664047413] [2020-09-04 17:35:28,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:35:28,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:35:28,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041150450] [2020-09-04 17:35:28,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:35:28,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:35:28,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:35:28,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:35:28,583 INFO L87 Difference]: Start difference. First operand 61284 states and 75348 transitions. Second operand 5 states. [2020-09-04 17:35:38,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:35:38,300 INFO L93 Difference]: Finished difference Result 118426 states and 145834 transitions. [2020-09-04 17:35:38,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:35:38,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 606 [2020-09-04 17:35:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:35:38,547 INFO L225 Difference]: With dead ends: 118426 [2020-09-04 17:35:38,548 INFO L226 Difference]: Without dead ends: 60518 [2020-09-04 17:35:38,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:35:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60518 states. [2020-09-04 17:35:47,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60518 to 60450. [2020-09-04 17:35:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60450 states. [2020-09-04 17:35:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60450 states to 60450 states and 74212 transitions. [2020-09-04 17:35:47,386 INFO L78 Accepts]: Start accepts. Automaton has 60450 states and 74212 transitions. Word has length 606 [2020-09-04 17:35:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:35:47,386 INFO L479 AbstractCegarLoop]: Abstraction has 60450 states and 74212 transitions. [2020-09-04 17:35:47,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:35:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 60450 states and 74212 transitions. [2020-09-04 17:35:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-09-04 17:35:47,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:35:47,465 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] [2020-09-04 17:35:47,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 17:35:47,465 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:35:47,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:35:47,466 INFO L82 PathProgramCache]: Analyzing trace with hash 815162497, now seen corresponding path program 1 times [2020-09-04 17:35:47,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:35:47,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022812238] [2020-09-04 17:35:47,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:35:47,489 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:35:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:35:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:47,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:35:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:35:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-09-04 17:35:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-09-04 17:35:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:48,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2020-09-04 17:35:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:35:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:35:48,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022812238] [2020-09-04 17:35:48,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:35:48,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:35:48,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288581012] [2020-09-04 17:35:48,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:35:48,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:35:48,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:35:48,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:35:48,531 INFO L87 Difference]: Start difference. First operand 60450 states and 74212 transitions. Second operand 9 states. [2020-09-04 17:36:05,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:36:05,789 INFO L93 Difference]: Finished difference Result 133276 states and 164573 transitions. [2020-09-04 17:36:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 17:36:05,790 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 658 [2020-09-04 17:36:05,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:36:06,042 INFO L225 Difference]: With dead ends: 133276 [2020-09-04 17:36:06,042 INFO L226 Difference]: Without dead ends: 76202 [2020-09-04 17:36:06,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-09-04 17:36:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76202 states. [2020-09-04 17:36:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76202 to 74061. [2020-09-04 17:36:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74061 states. [2020-09-04 17:36:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74061 states to 74061 states and 89605 transitions. [2020-09-04 17:36:17,245 INFO L78 Accepts]: Start accepts. Automaton has 74061 states and 89605 transitions. Word has length 658 [2020-09-04 17:36:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:36:17,245 INFO L479 AbstractCegarLoop]: Abstraction has 74061 states and 89605 transitions. [2020-09-04 17:36:17,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:36:17,245 INFO L276 IsEmpty]: Start isEmpty. Operand 74061 states and 89605 transitions. [2020-09-04 17:36:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2020-09-04 17:36:17,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:36:17,330 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] [2020-09-04 17:36:17,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 17:36:17,331 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:36:17,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:36:17,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2116927898, now seen corresponding path program 1 times [2020-09-04 17:36:17,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:36:17,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037945792] [2020-09-04 17:36:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:36:17,360 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:36:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:36:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:17,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:36:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 17:36:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:17,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-09-04 17:36:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:17,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-09-04 17:36:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:17,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2020-09-04 17:36:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:36:18,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037945792] [2020-09-04 17:36:18,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:36:18,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:36:18,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901236011] [2020-09-04 17:36:18,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:36:18,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:36:18,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:36:18,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:36:18,132 INFO L87 Difference]: Start difference. First operand 74061 states and 89605 transitions. Second operand 10 states. [2020-09-04 17:36:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:36:33,082 INFO L93 Difference]: Finished difference Result 149335 states and 180688 transitions. [2020-09-04 17:36:33,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-04 17:36:33,084 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 670 [2020-09-04 17:36:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:36:33,372 INFO L225 Difference]: With dead ends: 149335 [2020-09-04 17:36:33,372 INFO L226 Difference]: Without dead ends: 78608 [2020-09-04 17:36:33,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-09-04 17:36:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78608 states. [2020-09-04 17:36:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78608 to 78371. [2020-09-04 17:36:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78371 states. [2020-09-04 17:36:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78371 states to 78371 states and 94578 transitions. [2020-09-04 17:36:45,920 INFO L78 Accepts]: Start accepts. Automaton has 78371 states and 94578 transitions. Word has length 670 [2020-09-04 17:36:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:36:45,920 INFO L479 AbstractCegarLoop]: Abstraction has 78371 states and 94578 transitions. [2020-09-04 17:36:45,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:36:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 78371 states and 94578 transitions. [2020-09-04 17:36:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2020-09-04 17:36:46,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:36:46,230 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] [2020-09-04 17:36:46,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 17:36:46,230 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:36:46,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:36:46,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1653524239, now seen corresponding path program 1 times [2020-09-04 17:36:46,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:36:46,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83119190] [2020-09-04 17:36:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:36:46,262 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:36:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:46,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:36:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:46,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:36:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:46,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:36:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-09-04 17:36:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:47,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 17:36:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-09-04 17:36:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:36:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:36:47,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83119190] [2020-09-04 17:36:47,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:36:47,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 17:36:47,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670013026] [2020-09-04 17:36:47,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 17:36:47,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:36:47,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 17:36:47,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-04 17:36:47,677 INFO L87 Difference]: Start difference. First operand 78371 states and 94578 transitions. Second operand 15 states. [2020-09-04 17:36:48,783 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-09-04 17:36:49,206 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-09-04 17:36:49,551 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-09-04 17:36:49,687 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-09-04 17:36:50,225 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-09-04 17:36:52,586 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-09-04 17:36:55,006 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-09-04 17:36:56,242 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-09-04 17:36:57,117 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-09-04 17:36:59,575 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-09-04 17:37:03,868 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-09-04 17:37:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:37:18,965 INFO L93 Difference]: Finished difference Result 164891 states and 198929 transitions. [2020-09-04 17:37:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-04 17:37:18,967 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 680 [2020-09-04 17:37:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:37:19,260 INFO L225 Difference]: With dead ends: 164891 [2020-09-04 17:37:19,261 INFO L226 Difference]: Without dead ends: 86931 [2020-09-04 17:37:19,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=537, Invalid=2115, Unknown=0, NotChecked=0, Total=2652 [2020-09-04 17:37:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86931 states. [2020-09-04 17:37:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86931 to 85041. [2020-09-04 17:37:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85041 states. [2020-09-04 17:37:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85041 states to 85041 states and 102463 transitions. [2020-09-04 17:37:34,970 INFO L78 Accepts]: Start accepts. Automaton has 85041 states and 102463 transitions. Word has length 680 [2020-09-04 17:37:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:37:34,971 INFO L479 AbstractCegarLoop]: Abstraction has 85041 states and 102463 transitions. [2020-09-04 17:37:34,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 17:37:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 85041 states and 102463 transitions. [2020-09-04 17:37:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2020-09-04 17:37:35,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:37:35,066 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] [2020-09-04 17:37:35,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 17:37:35,067 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:37:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:37:35,067 INFO L82 PathProgramCache]: Analyzing trace with hash 195382071, now seen corresponding path program 1 times [2020-09-04 17:37:35,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:37:35,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216712815] [2020-09-04 17:37:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:37:35,096 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:37:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:37:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:37:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:37:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:37:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:37:35,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:37:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:37:35,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-09-04 17:37:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:37:35,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-09-04 17:37:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:37:35,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-09-04 17:37:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:37:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:37:36,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216712815] [2020-09-04 17:37:36,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:37:36,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 17:37:36,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405609465] [2020-09-04 17:37:36,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 17:37:36,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:37:36,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 17:37:36,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:37:36,495 INFO L87 Difference]: Start difference. First operand 85041 states and 102463 transitions. Second operand 12 states. [2020-09-04 17:37:38,561 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-09-04 17:37:42,246 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-09-04 17:37:50,036 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-09-04 17:37:54,359 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-09-04 17:38:06,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:38:06,533 INFO L93 Difference]: Finished difference Result 174258 states and 210248 transitions. [2020-09-04 17:38:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 17:38:06,535 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 686 [2020-09-04 17:38:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:38:06,864 INFO L225 Difference]: With dead ends: 174258 [2020-09-04 17:38:06,864 INFO L226 Difference]: Without dead ends: 91952 [2020-09-04 17:38:07,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=331, Invalid=1229, Unknown=0, NotChecked=0, Total=1560 [2020-09-04 17:38:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91952 states. [2020-09-04 17:38:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91952 to 90156. [2020-09-04 17:38:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90156 states. [2020-09-04 17:38:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90156 states to 90156 states and 108505 transitions. [2020-09-04 17:38:23,242 INFO L78 Accepts]: Start accepts. Automaton has 90156 states and 108505 transitions. Word has length 686 [2020-09-04 17:38:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:38:23,243 INFO L479 AbstractCegarLoop]: Abstraction has 90156 states and 108505 transitions. [2020-09-04 17:38:23,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 17:38:23,243 INFO L276 IsEmpty]: Start isEmpty. Operand 90156 states and 108505 transitions. [2020-09-04 17:38:23,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2020-09-04 17:38:23,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:38:23,346 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] [2020-09-04 17:38:23,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 17:38:23,346 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:38:23,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:38:23,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1298374939, now seen corresponding path program 1 times [2020-09-04 17:38:23,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:38:23,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920486834] [2020-09-04 17:38:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:38:23,383 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:38:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:38:23,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:38:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:38:23,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:38:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:38:23,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:38:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:38:23,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-09-04 17:38:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:38:23,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-04 17:38:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:38:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-09-04 17:38:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:38:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:38:24,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920486834] [2020-09-04 17:38:24,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:38:24,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:38:24,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295849634] [2020-09-04 17:38:24,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:38:24,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:38:24,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:38:24,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:38:24,032 INFO L87 Difference]: Start difference. First operand 90156 states and 108505 transitions. Second operand 7 states. [2020-09-04 17:38:43,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:38:43,209 INFO L93 Difference]: Finished difference Result 180515 states and 217239 transitions. [2020-09-04 17:38:43,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 17:38:43,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 687 [2020-09-04 17:38:43,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:38:43,504 INFO L225 Difference]: With dead ends: 180515 [2020-09-04 17:38:43,504 INFO L226 Difference]: Without dead ends: 90571 [2020-09-04 17:38:43,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:38:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90571 states. [2020-09-04 17:38:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90571 to 89915. [2020-09-04 17:38:59,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89915 states. [2020-09-04 17:38:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89915 states to 89915 states and 106190 transitions. [2020-09-04 17:38:59,865 INFO L78 Accepts]: Start accepts. Automaton has 89915 states and 106190 transitions. Word has length 687 [2020-09-04 17:38:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:38:59,865 INFO L479 AbstractCegarLoop]: Abstraction has 89915 states and 106190 transitions. [2020-09-04 17:38:59,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:38:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 89915 states and 106190 transitions. [2020-09-04 17:38:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-09-04 17:38:59,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:38:59,982 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] [2020-09-04 17:38:59,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 17:38:59,983 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:38:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:38:59,983 INFO L82 PathProgramCache]: Analyzing trace with hash 331157881, now seen corresponding path program 1 times [2020-09-04 17:38:59,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:38:59,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896354593] [2020-09-04 17:38:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:39:00,018 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:39:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:00,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:39:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:00,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:39:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 17:39:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 17:39:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:00,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-09-04 17:39:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-09-04 17:39:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:00,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2020-09-04 17:39:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:39:01,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896354593] [2020-09-04 17:39:01,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:39:01,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:39:01,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354753498] [2020-09-04 17:39:01,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:39:01,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:39:01,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:39:01,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:39:01,232 INFO L87 Difference]: Start difference. First operand 89915 states and 106190 transitions. Second operand 10 states. [2020-09-04 17:39:24,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:39:24,678 INFO L93 Difference]: Finished difference Result 189476 states and 224194 transitions. [2020-09-04 17:39:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 17:39:24,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 791 [2020-09-04 17:39:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:39:25,015 INFO L225 Difference]: With dead ends: 189476 [2020-09-04 17:39:25,015 INFO L226 Difference]: Without dead ends: 102937 [2020-09-04 17:39:25,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-09-04 17:39:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102937 states. [2020-09-04 17:39:43,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102937 to 100311. [2020-09-04 17:39:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100311 states. [2020-09-04 17:39:43,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100311 states to 100311 states and 118451 transitions. [2020-09-04 17:39:43,588 INFO L78 Accepts]: Start accepts. Automaton has 100311 states and 118451 transitions. Word has length 791 [2020-09-04 17:39:43,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:39:43,588 INFO L479 AbstractCegarLoop]: Abstraction has 100311 states and 118451 transitions. [2020-09-04 17:39:43,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:39:43,588 INFO L276 IsEmpty]: Start isEmpty. Operand 100311 states and 118451 transitions. [2020-09-04 17:39:43,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-09-04 17:39:43,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:39:43,708 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] [2020-09-04 17:39:43,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 17:39:43,709 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:39:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:39:43,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1570166223, now seen corresponding path program 1 times [2020-09-04 17:39:43,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:39:43,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061975678] [2020-09-04 17:39:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:39:43,734 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:39:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:43,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:39:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:43,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:39:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:43,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:39:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:44,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-09-04 17:39:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-09-04 17:39:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:44,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-09-04 17:39:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:44,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-09-04 17:39:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:39:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:39:44,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061975678] [2020-09-04 17:39:44,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:39:44,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:39:44,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141718395] [2020-09-04 17:39:44,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:39:44,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:39:44,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:39:44,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:39:44,495 INFO L87 Difference]: Start difference. First operand 100311 states and 118451 transitions. Second operand 5 states. [2020-09-04 17:40:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:40:01,899 INFO L93 Difference]: Finished difference Result 197168 states and 233018 transitions. [2020-09-04 17:40:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:40:01,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 802 [2020-09-04 17:40:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:40:02,246 INFO L225 Difference]: With dead ends: 197168 [2020-09-04 17:40:02,246 INFO L226 Difference]: Without dead ends: 100237 [2020-09-04 17:40:02,399 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 [2020-09-04 17:40:02,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100237 states. [2020-09-04 17:40:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100237 to 100109. [2020-09-04 17:40:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100109 states. [2020-09-04 17:40:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100109 states to 100109 states and 118171 transitions. [2020-09-04 17:40:21,302 INFO L78 Accepts]: Start accepts. Automaton has 100109 states and 118171 transitions. Word has length 802 [2020-09-04 17:40:21,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:40:21,303 INFO L479 AbstractCegarLoop]: Abstraction has 100109 states and 118171 transitions. [2020-09-04 17:40:21,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:40:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 100109 states and 118171 transitions. [2020-09-04 17:40:21,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-09-04 17:40:21,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:40:21,428 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] [2020-09-04 17:40:21,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 17:40:21,429 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:40:21,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:40:21,429 INFO L82 PathProgramCache]: Analyzing trace with hash -293819967, now seen corresponding path program 1 times [2020-09-04 17:40:21,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:40:21,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927519861] [2020-09-04 17:40:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:40:21,451 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:40:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:40:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:40:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:40:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:40:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:40:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:40:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:40:21,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-09-04 17:40:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:40:21,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-09-04 17:40:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:40:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-09-04 17:40:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:40:21,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-09-04 17:40:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:40:21,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2020-09-04 17:40:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:40:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:40:22,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927519861] [2020-09-04 17:40:22,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:40:22,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:40:22,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367761512] [2020-09-04 17:40:22,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:40:22,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:40:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:40:22,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:40:22,164 INFO L87 Difference]: Start difference. First operand 100109 states and 118171 transitions. Second operand 7 states. [2020-09-04 17:40:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:40:42,915 INFO L93 Difference]: Finished difference Result 209414 states and 247428 transitions. [2020-09-04 17:40:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 17:40:42,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 814 [2020-09-04 17:40:42,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:40:43,617 INFO L225 Difference]: With dead ends: 209414 [2020-09-04 17:40:43,617 INFO L226 Difference]: Without dead ends: 109716 [2020-09-04 17:40:43,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:40:43,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109716 states. [2020-09-04 17:41:03,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109716 to 105315. [2020-09-04 17:41:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105315 states. [2020-09-04 17:41:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105315 states to 105315 states and 123007 transitions. [2020-09-04 17:41:03,526 INFO L78 Accepts]: Start accepts. Automaton has 105315 states and 123007 transitions. Word has length 814 [2020-09-04 17:41:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:41:03,527 INFO L479 AbstractCegarLoop]: Abstraction has 105315 states and 123007 transitions. [2020-09-04 17:41:03,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:41:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 105315 states and 123007 transitions. [2020-09-04 17:41:03,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-09-04 17:41:03,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:41:03,650 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] [2020-09-04 17:41:03,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 17:41:03,650 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:41:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:41:03,651 INFO L82 PathProgramCache]: Analyzing trace with hash -228854500, now seen corresponding path program 1 times [2020-09-04 17:41:03,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:41:03,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522269415] [2020-09-04 17:41:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:41:03,688 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:41:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:03,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:41:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:41:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:41:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:04,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-09-04 17:41:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:04,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-09-04 17:41:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:04,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-09-04 17:41:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:04,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2020-09-04 17:41:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:41:04,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522269415] [2020-09-04 17:41:04,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:41:04,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 17:41:04,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625732231] [2020-09-04 17:41:04,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 17:41:04,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:41:04,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 17:41:04,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:41:04,929 INFO L87 Difference]: Start difference. First operand 105315 states and 123007 transitions. Second operand 11 states. [2020-09-04 17:41:06,118 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-04 17:41:08,736 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-09-04 17:41:10,927 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-09-04 17:41:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:41:32,118 INFO L93 Difference]: Finished difference Result 206706 states and 241795 transitions. [2020-09-04 17:41:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-04 17:41:32,119 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 814 [2020-09-04 17:41:32,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:41:32,446 INFO L225 Difference]: With dead ends: 206706 [2020-09-04 17:41:32,446 INFO L226 Difference]: Without dead ends: 105385 [2020-09-04 17:41:32,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 17:41:32,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105385 states. [2020-09-04 17:41:54,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105385 to 105106. [2020-09-04 17:41:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105106 states. [2020-09-04 17:41:54,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105106 states to 105106 states and 122536 transitions. [2020-09-04 17:41:54,658 INFO L78 Accepts]: Start accepts. Automaton has 105106 states and 122536 transitions. Word has length 814 [2020-09-04 17:41:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:41:54,658 INFO L479 AbstractCegarLoop]: Abstraction has 105106 states and 122536 transitions. [2020-09-04 17:41:54,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 17:41:54,659 INFO L276 IsEmpty]: Start isEmpty. Operand 105106 states and 122536 transitions. [2020-09-04 17:41:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-09-04 17:41:54,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:41:54,766 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] [2020-09-04 17:41:54,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 17:41:54,766 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:41:54,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:41:54,767 INFO L82 PathProgramCache]: Analyzing trace with hash -587128004, now seen corresponding path program 1 times [2020-09-04 17:41:54,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:41:54,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584655328] [2020-09-04 17:41:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:41:54,791 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:41:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:55,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:41:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:55,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:41:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:55,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:41:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:55,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:41:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:55,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:41:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-09-04 17:41:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-09-04 17:41:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:41:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:41:55,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584655328] [2020-09-04 17:41:55,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:41:55,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 17:41:55,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316003105] [2020-09-04 17:41:55,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 17:41:55,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:41:55,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 17:41:55,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:41:55,886 INFO L87 Difference]: Start difference. First operand 105106 states and 122536 transitions. Second operand 8 states. [2020-09-04 17:42:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:42:21,229 INFO L93 Difference]: Finished difference Result 203794 states and 237246 transitions. [2020-09-04 17:42:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 17:42:21,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 818 [2020-09-04 17:42:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:42:21,553 INFO L225 Difference]: With dead ends: 203794 [2020-09-04 17:42:21,553 INFO L226 Difference]: Without dead ends: 99099 [2020-09-04 17:42:21,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 17:42:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99099 states. [2020-09-04 17:42:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99099 to 96259. [2020-09-04 17:42:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96259 states. [2020-09-04 17:42:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96259 states to 96259 states and 110438 transitions. [2020-09-04 17:42:42,865 INFO L78 Accepts]: Start accepts. Automaton has 96259 states and 110438 transitions. Word has length 818 [2020-09-04 17:42:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:42:42,866 INFO L479 AbstractCegarLoop]: Abstraction has 96259 states and 110438 transitions. [2020-09-04 17:42:42,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 17:42:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 96259 states and 110438 transitions. [2020-09-04 17:42:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2020-09-04 17:42:42,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:42:42,994 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] [2020-09-04 17:42:42,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 17:42:42,994 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:42:42,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:42:42,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1318803644, now seen corresponding path program 1 times [2020-09-04 17:42:42,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:42:42,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648772445] [2020-09-04 17:42:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:42:43,020 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:42:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:42:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:42:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:42:43,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:42:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:42:43,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-09-04 17:42:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:42:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-09-04 17:42:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:42:43,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-09-04 17:42:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:42:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2020-09-04 17:42:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:42:43,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2020-09-04 17:42:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:42:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:42:44,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648772445] [2020-09-04 17:42:44,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:42:44,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:42:44,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179295872] [2020-09-04 17:42:44,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:42:44,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:42:44,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:42:44,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:42:44,317 INFO L87 Difference]: Start difference. First operand 96259 states and 110438 transitions. Second operand 9 states. [2020-09-04 17:43:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:15,488 INFO L93 Difference]: Finished difference Result 215642 states and 247907 transitions. [2020-09-04 17:43:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 17:43:15,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 855 [2020-09-04 17:43:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:16,527 INFO L225 Difference]: With dead ends: 215642 [2020-09-04 17:43:16,527 INFO L226 Difference]: Without dead ends: 125600 [2020-09-04 17:43:16,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-09-04 17:43:16,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125600 states. [2020-09-04 17:43:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125600 to 121977. [2020-09-04 17:43:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121977 states. [2020-09-04 17:43:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121977 states to 121977 states and 139389 transitions. [2020-09-04 17:43:41,842 INFO L78 Accepts]: Start accepts. Automaton has 121977 states and 139389 transitions. Word has length 855 [2020-09-04 17:43:41,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:41,842 INFO L479 AbstractCegarLoop]: Abstraction has 121977 states and 139389 transitions. [2020-09-04 17:43:41,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:43:41,842 INFO L276 IsEmpty]: Start isEmpty. Operand 121977 states and 139389 transitions. [2020-09-04 17:43:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2020-09-04 17:43:41,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:41,966 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] [2020-09-04 17:43:41,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 17:43:41,967 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:41,967 INFO L82 PathProgramCache]: Analyzing trace with hash 28463548, now seen corresponding path program 1 times [2020-09-04 17:43:41,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:41,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088099856] [2020-09-04 17:43:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:41,997 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:42,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 17:43:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:42,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-04 17:43:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:42,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-09-04 17:43:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:42,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-09-04 17:43:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:42,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-09-04 17:43:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:42,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2020-09-04 17:43:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 839 [2020-09-04 17:43:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:42,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 981 [2020-09-04 17:43:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1092 [2020-09-04 17:43:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:43:44,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088099856] [2020-09-04 17:43:44,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:44,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:43:44,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681452768] [2020-09-04 17:43:44,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:43:44,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:44,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:43:44,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:43:44,070 INFO L87 Difference]: Start difference. First operand 121977 states and 139389 transitions. Second operand 9 states.