/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:07:48,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:07:48,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:07:48,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 02:07:48,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:07:48,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:07:48,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:07:48,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:07:48,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:07:48,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:07:48,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:07:48,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:07:48,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:07:48,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:07:48,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:07:48,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:07:48,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:07:48,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:07:48,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:07:48,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:07:48,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:07:48,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:07:48,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:07:48,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:07:48,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:07:48,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:07:48,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:07:48,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:07:48,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:07:48,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:07:48,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:07:48,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:07:48,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:07:48,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:07:48,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:07:48,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:07:48,594 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:07:48,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:07:48,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:07:48,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:07:48,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:07:48,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:07:48,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:07:48,596 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:07:49,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:07:49,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:07:49,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:07:49,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:07:49,061 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:07:49,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-11-07 02:07:49,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb2c1d207/66d7b1bae3ac4c8ca22ce8dedbe772e3/FLAG87101cb46 [2020-11-07 02:07:49,898 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:07:49,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2020-11-07 02:07:49,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb2c1d207/66d7b1bae3ac4c8ca22ce8dedbe772e3/FLAG87101cb46 [2020-11-07 02:07:50,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb2c1d207/66d7b1bae3ac4c8ca22ce8dedbe772e3 [2020-11-07 02:07:50,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:07:50,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:07:50,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:07:50,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:07:50,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:07:50,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:50" (1/1) ... [2020-11-07 02:07:50,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fa9ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50, skipping insertion in model container [2020-11-07 02:07:50,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:50" (1/1) ... [2020-11-07 02:07:50,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:07:50,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:07:50,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:07:50,520 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:07:50,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:07:50,564 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:07:50,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50 WrapperNode [2020-11-07 02:07:50,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:07:50,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:07:50,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:07:50,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:07:50,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50" (1/1) ... [2020-11-07 02:07:50,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50" (1/1) ... [2020-11-07 02:07:50,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50" (1/1) ... [2020-11-07 02:07:50,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50" (1/1) ... [2020-11-07 02:07:50,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50" (1/1) ... [2020-11-07 02:07:50,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50" (1/1) ... [2020-11-07 02:07:50,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50" (1/1) ... [2020-11-07 02:07:50,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:07:50,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:07:50,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:07:50,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:07:50,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:07:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:07:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:07:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:07:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:07:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 02:07:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:07:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:07:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:07:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 02:07:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 02:07:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:07:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:07:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:07:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:07:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:07:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:07:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:07:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:07:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:07:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:07:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:07:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:07:51,316 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:07:51,316 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-07 02:07:51,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:51 BoogieIcfgContainer [2020-11-07 02:07:51,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:07:51,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:07:51,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:07:51,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:07:51,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:07:50" (1/3) ... [2020-11-07 02:07:51,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b1391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:51, skipping insertion in model container [2020-11-07 02:07:51,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:50" (2/3) ... [2020-11-07 02:07:51,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b1391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:51, skipping insertion in model container [2020-11-07 02:07:51,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:51" (3/3) ... [2020-11-07 02:07:51,334 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-11-07 02:07:51,354 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:07:51,359 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:07:51,373 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:07:51,417 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:07:51,417 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:07:51,417 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:07:51,417 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:07:51,417 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:07:51,418 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:07:51,418 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:07:51,418 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:07:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-11-07 02:07:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 02:07:51,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:51,461 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] [2020-11-07 02:07:51,461 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:51,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1439685491, now seen corresponding path program 1 times [2020-11-07 02:07:51,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:51,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643218749] [2020-11-07 02:07:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:51,579 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:51,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:51,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643218749] [2020-11-07 02:07:51,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:51,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 02:07:51,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643274207] [2020-11-07 02:07:51,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 02:07:51,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:51,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 02:07:51,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:07:51,924 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-11-07 02:07:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:52,100 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2020-11-07 02:07:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 02:07:52,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-11-07 02:07:52,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:52,122 INFO L225 Difference]: With dead ends: 90 [2020-11-07 02:07:52,122 INFO L226 Difference]: Without dead ends: 57 [2020-11-07 02:07:52,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:07:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-07 02:07:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-07 02:07:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-07 02:07:52,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-11-07 02:07:52,226 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 36 [2020-11-07 02:07:52,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:52,228 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-11-07 02:07:52,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 02:07:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-11-07 02:07:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 02:07:52,230 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:52,231 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] [2020-11-07 02:07:52,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:07:52,232 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash -563113616, now seen corresponding path program 1 times [2020-11-07 02:07:52,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:52,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566630435] [2020-11-07 02:07:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:52,248 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:52,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:52,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566630435] [2020-11-07 02:07:52,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:52,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 02:07:52,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238758420] [2020-11-07 02:07:52,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 02:07:52,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:52,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 02:07:52,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-07 02:07:52,465 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 6 states. [2020-11-07 02:07:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:52,804 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-11-07 02:07:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:07:52,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-11-07 02:07:52,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:52,807 INFO L225 Difference]: With dead ends: 78 [2020-11-07 02:07:52,807 INFO L226 Difference]: Without dead ends: 60 [2020-11-07 02:07:52,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:07:52,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-07 02:07:52,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-11-07 02:07:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-07 02:07:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-11-07 02:07:52,826 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 36 [2020-11-07 02:07:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:52,827 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-11-07 02:07:52,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 02:07:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-11-07 02:07:52,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-07 02:07:52,829 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:52,830 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] [2020-11-07 02:07:52,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:07:52,830 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:52,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:52,831 INFO L82 PathProgramCache]: Analyzing trace with hash -115429657, now seen corresponding path program 1 times [2020-11-07 02:07:52,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:52,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743129917] [2020-11-07 02:07:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:52,979 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2020-11-07 02:07:53,034 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:07:53,037 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:53,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743129917] [2020-11-07 02:07:53,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:53,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:07:53,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324473120] [2020-11-07 02:07:53,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:07:53,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:53,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:07:53,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:07:53,220 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 8 states. [2020-11-07 02:07:53,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:53,772 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-11-07 02:07:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 02:07:53,781 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-11-07 02:07:53,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:53,784 INFO L225 Difference]: With dead ends: 99 [2020-11-07 02:07:53,784 INFO L226 Difference]: Without dead ends: 95 [2020-11-07 02:07:53,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-07 02:07:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-07 02:07:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2020-11-07 02:07:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-07 02:07:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-11-07 02:07:53,810 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 46 [2020-11-07 02:07:53,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:53,810 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-11-07 02:07:53,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:07:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-11-07 02:07:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 02:07:53,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:53,813 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] [2020-11-07 02:07:53,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:07:53,813 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:53,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:53,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1489312715, now seen corresponding path program 1 times [2020-11-07 02:07:53,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:53,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530696340] [2020-11-07 02:07:53,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:53,887 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:07:53,890 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:54,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:54,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530696340] [2020-11-07 02:07:54,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:54,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:07:54,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617224952] [2020-11-07 02:07:54,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:07:54,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:54,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:07:54,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:07:54,053 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 8 states. [2020-11-07 02:07:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:54,630 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-11-07 02:07:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 02:07:54,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-11-07 02:07:54,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:54,634 INFO L225 Difference]: With dead ends: 116 [2020-11-07 02:07:54,634 INFO L226 Difference]: Without dead ends: 112 [2020-11-07 02:07:54,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-07 02:07:54,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-07 02:07:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-11-07 02:07:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-07 02:07:54,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2020-11-07 02:07:54,659 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 47 [2020-11-07 02:07:54,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:54,660 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2020-11-07 02:07:54,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:07:54,660 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2020-11-07 02:07:54,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 02:07:54,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:54,662 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] [2020-11-07 02:07:54,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:07:54,662 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:54,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:54,663 INFO L82 PathProgramCache]: Analyzing trace with hash -196114581, now seen corresponding path program 1 times [2020-11-07 02:07:54,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:54,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632369909] [2020-11-07 02:07:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:54,753 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:07:54,760 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:54,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:54,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632369909] [2020-11-07 02:07:54,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:54,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:07:54,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442262826] [2020-11-07 02:07:54,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:07:54,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:54,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:07:54,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:07:54,949 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand 8 states. [2020-11-07 02:07:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:55,509 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2020-11-07 02:07:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 02:07:55,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-11-07 02:07:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:55,511 INFO L225 Difference]: With dead ends: 127 [2020-11-07 02:07:55,512 INFO L226 Difference]: Without dead ends: 123 [2020-11-07 02:07:55,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-07 02:07:55,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-07 02:07:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2020-11-07 02:07:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-07 02:07:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2020-11-07 02:07:55,543 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 47 [2020-11-07 02:07:55,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:55,543 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2020-11-07 02:07:55,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:07:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2020-11-07 02:07:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-07 02:07:55,545 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:55,546 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-07 02:07:55,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:07:55,546 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:55,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2099559550, now seen corresponding path program 1 times [2020-11-07 02:07:55,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:55,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683042891] [2020-11-07 02:07:55,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:55,741 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:07:55,744 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:55,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683042891] [2020-11-07 02:07:55,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:55,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 02:07:55,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590746792] [2020-11-07 02:07:55,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 02:07:55,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:55,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 02:07:55,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:07:55,871 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand 7 states. [2020-11-07 02:07:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:56,250 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-11-07 02:07:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 02:07:56,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-11-07 02:07:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:56,253 INFO L225 Difference]: With dead ends: 135 [2020-11-07 02:07:56,253 INFO L226 Difference]: Without dead ends: 66 [2020-11-07 02:07:56,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:07:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-07 02:07:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-11-07 02:07:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-07 02:07:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-11-07 02:07:56,273 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 57 [2020-11-07 02:07:56,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:56,274 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-11-07 02:07:56,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 02:07:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-11-07 02:07:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-07 02:07:56,276 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:56,276 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-07 02:07:56,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:07:56,277 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:56,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:56,277 INFO L82 PathProgramCache]: Analyzing trace with hash -855406281, now seen corresponding path program 1 times [2020-11-07 02:07:56,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:56,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258671242] [2020-11-07 02:07:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:56,334 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:07:56,337 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:56,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:56,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 02:07:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:56,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258671242] [2020-11-07 02:07:56,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:56,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:07:56,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426968299] [2020-11-07 02:07:56,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:07:56,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:56,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:07:56,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:07:56,526 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 10 states. [2020-11-07 02:07:57,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:57,144 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2020-11-07 02:07:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 02:07:57,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-11-07 02:07:57,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:57,147 INFO L225 Difference]: With dead ends: 93 [2020-11-07 02:07:57,147 INFO L226 Difference]: Without dead ends: 89 [2020-11-07 02:07:57,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:07:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-07 02:07:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-11-07 02:07:57,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-07 02:07:57,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-11-07 02:07:57,169 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 58 [2020-11-07 02:07:57,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:57,169 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-11-07 02:07:57,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:07:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-11-07 02:07:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-07 02:07:57,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:57,172 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-07 02:07:57,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 02:07:57,172 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:57,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:57,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1759920101, now seen corresponding path program 1 times [2020-11-07 02:07:57,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:57,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580953458] [2020-11-07 02:07:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:57,226 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:07:57,228 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:57,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:07:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:57,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580953458] [2020-11-07 02:07:57,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:57,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:07:57,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883358622] [2020-11-07 02:07:57,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:07:57,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:57,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:07:57,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:07:57,375 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 10 states. [2020-11-07 02:07:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:57,966 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2020-11-07 02:07:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 02:07:57,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-11-07 02:07:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:57,971 INFO L225 Difference]: With dead ends: 107 [2020-11-07 02:07:57,971 INFO L226 Difference]: Without dead ends: 103 [2020-11-07 02:07:57,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:07:57,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-07 02:07:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2020-11-07 02:07:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-07 02:07:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-11-07 02:07:58,001 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 59 [2020-11-07 02:07:58,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:58,001 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-11-07 02:07:58,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:07:58,002 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-11-07 02:07:58,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-07 02:07:58,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:58,003 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-07 02:07:58,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 02:07:58,004 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:58,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:58,004 INFO L82 PathProgramCache]: Analyzing trace with hash 155171771, now seen corresponding path program 1 times [2020-11-07 02:07:58,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:58,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665468800] [2020-11-07 02:07:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:58,080 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:07:58,082 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:58,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:07:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:58,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665468800] [2020-11-07 02:07:58,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:58,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:07:58,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361504558] [2020-11-07 02:07:58,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:07:58,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:58,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:07:58,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:07:58,234 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 10 states. [2020-11-07 02:07:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:58,880 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2020-11-07 02:07:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 02:07:58,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-11-07 02:07:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:58,882 INFO L225 Difference]: With dead ends: 105 [2020-11-07 02:07:58,884 INFO L226 Difference]: Without dead ends: 101 [2020-11-07 02:07:58,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:07:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-07 02:07:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 76. [2020-11-07 02:07:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-07 02:07:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-11-07 02:07:58,924 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 59 [2020-11-07 02:07:58,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:58,924 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-11-07 02:07:58,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:07:58,925 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-11-07 02:07:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-07 02:07:58,929 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:58,929 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-11-07 02:07:58,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 02:07:58,929 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:58,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:58,932 INFO L82 PathProgramCache]: Analyzing trace with hash 123956103, now seen corresponding path program 2 times [2020-11-07 02:07:58,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:58,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464595090] [2020-11-07 02:07:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:58,999 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:07:59,001 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:59,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:59,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 02:07:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:07:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:59,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464595090] [2020-11-07 02:07:59,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:59,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 02:07:59,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203024077] [2020-11-07 02:07:59,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 02:07:59,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:59,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 02:07:59,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:07:59,144 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 7 states. [2020-11-07 02:07:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:59,447 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-11-07 02:07:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 02:07:59,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-11-07 02:07:59,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:59,448 INFO L225 Difference]: With dead ends: 76 [2020-11-07 02:07:59,448 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 02:07:59,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:07:59,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 02:07:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 02:07:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 02:07:59,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 02:07:59,450 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2020-11-07 02:07:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:59,451 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 02:07:59,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 02:07:59,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 02:07:59,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 02:07:59,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 02:07:59,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 02:08:00,402 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 23 [2020-11-07 02:08:00,547 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 23 [2020-11-07 02:08:01,131 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 24 [2020-11-07 02:08:01,765 WARN L194 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-11-07 02:08:01,966 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,966 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,966 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,966 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,966 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,967 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,967 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:08:01,967 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 02:08:01,967 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,967 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,968 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,968 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,968 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-07 02:08:01,968 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 02:08:01,968 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:08:01,968 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:08:01,968 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:08:01,969 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 02:08:01,969 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:08:01,969 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-07 02:08:01,969 INFO L266 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-07 02:08:01,969 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:08:01,969 INFO L266 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:08:01,969 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:08:01,969 INFO L262 CegarLoopResult]: At program point L35-2(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (= |main_#t~post4| 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,970 INFO L262 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,970 INFO L269 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: true [2020-11-07 02:08:01,970 INFO L262 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-11-07 02:08:01,970 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 24 52) the Hoare annotation is: true [2020-11-07 02:08:01,970 INFO L262 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (= main_~j~0 0) (= |main_#t~post6| 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,971 INFO L262 CegarLoopResult]: At program point L48-1(line 48) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (= |main_#t~post6| 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,971 INFO L262 CegarLoopResult]: At program point L40(lines 40 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,971 INFO L262 CegarLoopResult]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 10000 main_~c3~0))) (or (and .cse0 (= main_~k~0 0) (= main_~i~0 0) .cse1 .cse2) (and .cse0 (<= 1 main_~i~0) (<= 2000 main_~k~0) .cse1 (<= main_~n~0 1) .cse2))) [2020-11-07 02:08:01,971 INFO L262 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,971 INFO L262 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,971 INFO L262 CegarLoopResult]: At program point L36-2(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,972 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,972 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,972 INFO L262 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,972 INFO L269 CegarLoopResult]: At program point L24(lines 24 52) the Hoare annotation is: true [2020-11-07 02:08:01,972 INFO L262 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,972 INFO L262 CegarLoopResult]: At program point L49-1(line 49) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (<= 2000 |main_#t~post7|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,973 INFO L262 CegarLoopResult]: At program point L49-2(line 49) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= main_~n~0 main_~j~0) (<= 1 main_~i~0) (<= 1999 main_~k~0) (<= 2000 |main_#t~post7|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,973 INFO L262 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,973 INFO L262 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,973 INFO L269 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: true [2020-11-07 02:08:01,973 INFO L262 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,974 INFO L262 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,974 INFO L262 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,974 INFO L262 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,974 INFO L269 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-11-07 02:08:01,974 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 24 52) the Hoare annotation is: true [2020-11-07 02:08:01,974 INFO L262 CegarLoopResult]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 1 main_~i~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (<= main_~n~0 1)) (.cse4 (<= 10000 main_~c3~0)) (.cse5 (= main_~j~0 0))) (or (and (<= main_~n~0 main_~j~0) .cse0 .cse1 (<= 1999 main_~k~0) .cse2 .cse3 .cse4) (and .cse0 .cse1 (<= 2000 main_~k~0) .cse5 .cse2 .cse3 .cse4) (and (<= main_~n~0 0) (= main_~i~0 0) .cse5))) [2020-11-07 02:08:01,975 INFO L269 CegarLoopResult]: At program point L46-3(lines 46 50) the Hoare annotation is: true [2020-11-07 02:08:01,975 INFO L262 CegarLoopResult]: At program point L38(lines 38 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,975 INFO L262 CegarLoopResult]: At program point L34-2(lines 34 44) the Hoare annotation is: (or (and (<= main_~n~0 0) (= main_~i~0 0)) (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0))) [2020-11-07 02:08:01,975 INFO L262 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,975 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 52) the Hoare annotation is: true [2020-11-07 02:08:01,975 INFO L262 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,976 INFO L262 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,976 INFO L262 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= 4000 main_~c1~0) [2020-11-07 02:08:01,976 INFO L262 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,976 INFO L262 CegarLoopResult]: At program point L47-1(line 47) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (= main_~j~0 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,976 INFO L262 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,976 INFO L262 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,977 INFO L262 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (= main_~i~0 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,977 INFO L262 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (= main_~i~0 0) (= |main_#t~post4| 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-11-07 02:08:01,977 INFO L262 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:08:01,977 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-07 02:08:01,977 INFO L262 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:08:01,977 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:08:01,978 INFO L262 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:08:01,978 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:08:02,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:08:02 BoogieIcfgContainer [2020-11-07 02:08:02,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:08:02,005 INFO L168 Benchmark]: Toolchain (without parser) took 11761.57 ms. Allocated memory was 169.9 MB in the beginning and 245.4 MB in the end (delta: 75.5 MB). Free memory was 146.8 MB in the beginning and 97.4 MB in the end (delta: 49.4 MB). Peak memory consumption was 139.3 MB. Max. memory is 8.0 GB. [2020-11-07 02:08:02,006 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 101.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:08:02,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.52 ms. Allocated memory is still 169.9 MB. Free memory was 146.2 MB in the beginning and 136.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:08:02,008 INFO L168 Benchmark]: Boogie Preprocessor took 42.29 ms. Allocated memory is still 169.9 MB. Free memory was 136.6 MB in the beginning and 134.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:08:02,009 INFO L168 Benchmark]: RCFGBuilder took 709.15 ms. Allocated memory is still 169.9 MB. Free memory was 134.5 MB in the beginning and 149.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:08:02,010 INFO L168 Benchmark]: TraceAbstraction took 10679.90 ms. Allocated memory was 169.9 MB in the beginning and 245.4 MB in the end (delta: 75.5 MB). Free memory was 149.1 MB in the beginning and 97.4 MB in the end (delta: 51.7 MB). Peak memory consumption was 140.8 MB. Max. memory is 8.0 GB. [2020-11-07 02:08:02,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 101.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 314.52 ms. Allocated memory is still 169.9 MB. Free memory was 146.2 MB in the beginning and 136.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.29 ms. Allocated memory is still 169.9 MB. Free memory was 136.6 MB in the beginning and 134.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 709.15 ms. Allocated memory is still 169.9 MB. Free memory was 134.5 MB in the beginning and 149.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10679.90 ms. Allocated memory was 169.9 MB in the beginning and 245.4 MB in the end (delta: 75.5 MB). Free memory was 149.1 MB in the beginning and 97.4 MB in the end (delta: 51.7 MB). Peak memory consumption was 140.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((4000 <= c1 && k == 0) && i == 0) && 2000 <= c2) && 10000 <= c3) || (((((4000 <= c1 && 1 <= i) && 2000 <= k) && 2000 <= c2) && n <= 1) && 10000 <= c3) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((n <= j && 4000 <= c1) && 1 <= i) && 1999 <= k) && 2000 <= c2) && n <= 1) && 10000 <= c3) || ((((((4000 <= c1 && 1 <= i) && 2000 <= k) && j == 0) && 2000 <= c2) && n <= 1) && 10000 <= c3)) || ((n <= 0 && i == 0) && j == 0) - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 630 SDtfs, 910 SDslu, 518 SDs, 0 SdLazy, 2101 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 120 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 68 LocationsWithAnnotation, 158 PreInvPairs, 191 NumberOfFragments, 702 HoareAnnotationTreeSize, 158 FomulaSimplifications, 21383 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 68 FomulaSimplificationsInter, 2334 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...